Sunday 15 October 2023

Givenergy Inverter Error: Electricity Meter Com Fail

 I had a problem with my Givenergy Inverter and I thought I would share my solution as I could not see anything about it online. 

It wasn't a huge problem, but it was a little annoying when you are an energy geek like me. 

Essentially, the inverter stopped providing data to the cloud and therefore I could not see what was happening on my givenergy webpage or the phone app. 

It was disconcerting as I could not see what was happening and whether the battery and solar were working or not, let alone how they were performing. For all I knew they had shut down and it might have been dangerous. 

Photo of Consumer unit with fuses, including one with a green display and button.

What caused the error?

I think the error occurred when I turned off the lighting circuit next to this one in order to change some lightbulbs (see photo). 

I later realised that I wasn't getting any readings from the inverter.

What form did the error take?

There was no data being received about the energy going in and out of the meter. 

Looking into the reports on the web portal, there was a new error "Electricity Meter Com Fail." 

The inverter lights were on, which was reassuring, but the circle of light in the middle was yellowish, which I later learned indicates a communication problem. 

I could not see any advice about how to fix this issue online and so I tried a few things.

Eventually I went to bed defeated as it was nearly 1am and I wasn't getting anywhere.  

In the morning I continued to look up the problem and what it might be.  

I was getting battery data but not solar and grid data. I found the smart meter device to check if it was exporting. (I never use this device because the inverter provides much more useful data via givenergy). 

Simple solution

I believe I solved the problem by doing the following:

  • Pressing the set button on the electronic meter in the consumer unit. I did this last night and it did not achieve anything. 
  • However, today I also held down the button for a few seconds. This seemed to get the device to go through some sort of process and afterwards the readings resumed. 

So there you go - as simple as pressing the button on there to get it to reset itself. 

Phew! 

So the system was seemingly working throughout. I only missed about 18 hours of data collection on the solar generation and grid import/export but the electricity company will have been measuring my import and export so the data is just for my own records. 

However, it was quite a worry that there was a problem with the system over the weekend and that I might have to contact givenergy or my installer to get advice, possibly facing a callout charge or something. 

All in all, it has worked out fine, but I wanted to save others the stress by suggesting what might be a simple solution to a frustrating and disconcerting issue.  

Wednesday 4 October 2023

Cars in 2045: Offsetting Petrol/Gasoline costs with Carbon Capture and Storage

Why should we switch our entire fleet of cars over to Battery Electric Vehicles over the course of the coming decade? 

Photo of Two Battery Electric Vehicles

Isn't that going to be a huge pain? 

Shouldn't we just let people carry on using petrol cars? 

Well, let's try and work this out. 

Net zero future

We are in 2040 or 2050 and in urgent need to get to net zero because we have done so little about climate change up to that point. The global temperature is now on average 2 degrees over the pre-industrial average and still rising. 

Finally the governments of the world agree they have to achieve net zero after all by belatedly charging the full cost of carbon pollution. But how much will that add to the cost of petrol? 

I've tried to work this out, based on rough current prices, but I'm happy to be corrected if I've got something wrong. 

Invisible pollution caused by burning petrol/gas

We can't sense CO2 of course, but burning a litre of petrol apparently produces an astounding 2.4 kg of CO2! 

Furthermore, we have to add in the emissions involved in producing the petrol in the first place. I will estimate this to be an extra 0.72kg at present. 

But maybe that amount will come down if refineries and oil tankers use renewable power in the future? So let's assume pollution from petrol production has improved to 0.6kg per litre. 

This makes a nice round number of 3kg of CO2 per litre. 

Offsetting the CO2 pollution

What are the options to offset this CO2? All the cheap options - growing trees and plants and so on - will be long used up by this point. Let's say the airlines have already bought all these up and there is no land left for this. 

This leaves Direct Air Capture of Carbon and Storage (DACCS). It is hard to predict how much DACCS will cost in the future. It is completely unproven technology. Plus we don't have places to reliably store all the carbon produced, but let's ignore this for now and assume we can use it for something or put it back in the wells which we emptied of oil and gas for the same cost as getting that oil and gas out. 


Photo of a carbon engineering plant

At the very least the DACCS machinery would need to be powered with spare renewable capacity, since powering it with fossil fuels would mean you would also have to "CCS" those emissions, which would require burning more fossil fuels, which would require more CCS. So you need to build extra renewables to cover this usage. Let's assume you've overbuilt renewables and run the DACCS machine whenever there is a surplus. 

Nobody has any idea how much this will cost, but the IEA believe - no doubt correctly - that some CCS will be inevitable and have provided some estimates. Optimists say it will be $100 per tonne. Pessimists that it would be $350. I'm pessimistic myself, but let's consider those two scenarios to get an idea. 

Do we want to continue to using petrol and "DACCS" it or do we want to switch to BEVs? Let's consider the extra cost of capturing the carbon from petrol. 

Cheap DACCS cost of offsetting Petrol

DACCS cost per tonne of CO2: $100

DACCS cost per kg of CO2: $0.10

DACCS cost per litre of petrol: $0.30 (£0.25 at current exchange rates)

Expensive DACCS cost of offsetting Petrol

DACCS cost per tonne of CO2: $350

DACCS cost per kg of CO2: $0.35

DACCS cost per litre of petrol: $1.05 (£0.86 at current exchange rates)

Conclusion

As I've said, I am pessimistic that DACCS will come down significantly in price. It will probably end up somewhere in between those two extreme guesses. 

There is also the issue of what you do with all this carbon. I've added in some costs to transport it, but transport it to where? Presumably to make some E-fuels or something. Then the question is whether you should also DACCS the e-fuels as well? Or should the user of those e-fuels be responsible for that? 

Either way, imagine that the cost of petrol, whatever it would be in 2045 or 2050 (when peak oil might have hit anyway) is supplemented by a DACCS charge of fifty pence or more. 

BEVs are already cheaper over their lifetimes than petrol cars due to their lower fuel, running and maintenance costs. 

How much do you value your petrol car over the BEV alternative that you would pay this premium? Let's face it, few will. Petrol cars will be historic curiosities. There will be plenty of enthusiasts. However, they will be seen as inefficient, wasteful, dirty and polluting compared to normal cars (BEVs) 

Wednesday 5 July 2023

My courses for adults in 2023-4

My courses for the next academic year are now available to book. 

Click here for the latest version of the list of courses I am teaching, in date order. 

However, I thought I would list them here, so I can do so by format. 

Online Courses 

Political Philosophy: An Introduction (flexible online)
Flexible course with 24/7 discussion forums. Runs every term.
I am almost always the tutor on this course. 

Ethics: An Introduction (flexible online)
Flexible course with 24/7 discussion forums. Runs every term.
Mostly taught by other tutors, but sometimes I am the tutor.

Justice: Who Should Get What?
Mondays 3 - 4pm (UK time)
15 Jan - 25 Mar 2024 

The Ethics of Capitalism
Thursdays 1 - 2pm
18 Jan - Thu 28 Mar 2024 

Equality of Opportunity and the Ethics of Discrimination
Wednesdays 3 - 4pm
17 Apr - 26 June 2024 

Political Economy of Taxation
Thursdays 1 - 2pm
18 Apr - 27 June 2024 

In recent years I have also taught online courses over the Summer as well - look out for these in the new year.

Weekly Classes (10 weeks) in Oxford

Can Businesses be Ethical? What would this mean?
Fridays 2:00-4:00pm
29 Sep 2023 - 1 Dec 2023 

Can we achieve Net Zero if we are still addicted to Fossil fuels?
Tuesdays 7:00-9:00pm
23 Apr 2024 - 25 Jun 

Summer Schools (Oxford)

Ethics of Capitalism - Sat 3 Aug - Fri 9 August 2024 

I hope you will be able to join me on one or more of the above, and that you will tell anyone you know who might be interested! 

Sunday 25 June 2023

Open Access Journal article on the duties of migrants to their past countries and the implications for taxation

 I'm very pleased that my paper: Duties in an International World: The Importance of Past Residence and Citizenship

Has been published in the open access journal Problema

This clarified my view, hopefully explaining and justifying my approach to the topic of international taxation that I had presented in earlier work. 

Essentially the idea is that people who leave a country and make a life elsewhere still owe something back to their earlier states. Their subsequent states of residence should honour this by sharing revenue as determined by a fair international formula. An exception arises for refugees who have been forced to flee.  

After publishing this article I attended a talk by Wolfgang Schön which made me think I have not covered this topic enough and should have said more about the duty of reciprocity, which is probably doing some work here. 

Anyway, I hope that some people find this paper interesting and useful and I look forward to reading reactions and responses to it. 

Sunday 18 June 2023

"Tax Freedom Day" is complete nonsense

Apparently the Free Marketeers have declared today (June 18th) to be "Tax Freedom Day" in the UK.

The idea that people have been working for the government up to this point is really powerful - the nonsense of it all got me thinking of a completely different way of approaching taxation. 

Why not think of a "Tax Freedom minute" within the hour? This led me to develop my hourly averaging proposal, explained in my book Rethinking Taxation

Calculating "Tax Freedom"

If you do want to work out how much of your time goes to the government/society and how you get for yourself, then it would not just be be very difficult to do, it would actually be impossible. 

Think about it: 

  • How much does anyone "contribute" to society? 
  • How much does anyone "benefit" from society? 

If you want to use market prices for one you'd have to do so for the other as well. What is the value of the resources that each person receives over their life, from their families, government, employers and investment gains? I'll come back to this. 

When it comes to contribution things are even harder. 

  • Someone who follows the law (and its spirit) is contributing to society, while someone who doesn't is not. 
  • Someone who tends their garden thoughtfully and picks up litter benefits others, someone who litters and pollutes egregiously detracts.

How can you put a number on all these forms of contribution? 

Nagel and Murphy in their book The Myth of Ownership, showed this this whole line of thought is based on a simplistic everyday libertarianism. We assume that our gross income is in some sense ours as if we live in an imaginary libertarian economy. 

But we don't live in that economy. We live in our economy, in the real world. 

Tax isn't the only kind of contribution. However, it is an important one and everyone should be happy to pay their taxes out of a sense of reciprocity. 

Benefits received 

Of course, as I indicated earlier, what this "calculation" also misses is that we all benefit from government spending, past and present.

The government provides all sorts of goods and services that benefit us all. 

Some people, as is right, get more from the government than they put in. 

Children aren't going to be contributing, but all being well they will grow up and contribute later on. 

Some older people might not be contributing, but they will have done earlier in life.

If this was an honest exercise it would attempt to account for all the benefits that people receive over their life. 

It isn't an honest exercise, it is just libertarian propaganda that makes no sense. 

Net contributions?

Even if you think it is possible to calculate someone's tax contribution, and that it would be meaningful (which it isn't), the number would vary hugely from person to person.

Some people will get more than they contribute in ways that are right. We should want proper systems in place to support the vulnerable in society and not just abandon them.

Is it forgivable to spread nonsense?

You can criticize the supporters of "Tax Freedom Day" for being selfish, which is probably right. 

Or you can criticize them for being unrealistic ideologues, which is fair. 

But most importantly, they are also just talking nonsense in thinking that the numbers are in any sense meaningful.

People have got a right to be selfish, they have a right to believe and propagate nonsense.

It is a free country after all. 

The rest of us have a duty to see through it all. 

Wednesday 19 April 2023

Advice for getting solar systems in the UK

 A few people have asked me for advice about getting solar panels since I posted about our newly installed system. 

There is lots of general advice out there, and installers will of course look at your particular situation. 

For instance, Artisan Electrics has a video with good advice on the topic, which mentions a lot of the practical considerations. 

There are lots of things to think about, like what roof you have and whether it is in the shade at all. Having some shade isn't a dealbreaker (you can always get a micro-inverter for each panel), but you could have a look at your roof at different times of the day to see whether any nearby trees or rooves cast shade.  

Essentially, you want to get an MCS approved installer. They have to abide by high standards and only MCS installed systems can generate export payments. You certainly want to get paid for your excess if you are having a large system installed.  

I found the sales people generally quite useful for reviewing the options and coming up with a proposal they believe is in your financial interest, based on their own assumptions. 

However, there are a few things that installers might not flag up to you.  

Future proofing? 

As I mentioned in my previous blog, the focus tends to be on covering self-consumption. This is because you can be sure that you will save money on your electric bill if the solar (or solar and battery) covers that. 

After all, the export payment rate has been very low in recent years, so there has been little incentive to use your roof to supply the grid. 

However, there is no way to truly work out the payback time for a solar system - it depends on too many unknown future factors. How much will your electricity bills be in the future? What will your demand be? What will the export price be? Nobody knows for sure - certainly not me!  

Higher rates in the future?

However, that might not always be the case. New tariffs like Octopus' Flux tariff are offering rates several times that of the longstanding (but paltry) Standard Export Guarantee. However, these higher rates aren't guaranteed and the entire tariff might be withdrawn at any point. 

Nevertheless, if you look at all the plans to build solar farms and the controversy raised about them, it seems like using rooves is much less controversial. If all rooves were covered in solar and every house had a battery it would really help the country continue to run on clean energy through windless days after all. 

I certainly can't guarantee what export rates will be in the future, but I expect that if you've got a battery you will be able to use this for energy arbitrage - buy when the price is low and sell when it is high. 

Higher electricity consumption in the future?

But the other reason to think beyond your current use is that your use might increase in the future. 

Obviously, we are all looking to get more energy efficient as time goes on. LED lightbulbs use a fraction of older types for instance. 

However, that is just part of the story. The other side of net zero is that we need to electrify energy previously provided by fossil fuels. In the UK that means that your car, heating and hot water will be electric (the latter two ideally with a heat pump). 

These will require a lot of electricity to replace the petrol and gas. The usage won't necessarily perfectly line up with solar production - your car might be out in the middle of the day in the summer and your heat pump will be working much harder in the colder winter months when the solar production is much lower.

Nevertheless, having your own generation to assist in these things will be useful, and the case for a home battery and solar will increase the more that your activities are electrified.

More or less? 

Overall - my feeling is that you can't really have too much solar generation (unless you have a REALLY huge roof that could fit loads of panels).    

Of course, you can add to your system later. There is a case for getting something to start with and building from there. However, a lot of the cost of installing a solar system is the labour and scaffolding rather than the number of panels (which are about £200-£300 each)

I am glad I pushed for a slightly larger system (16 panels when a lot of the quotes were for 20), though I now wish I had budget for an even larger one. 

Too small an inverter? 

I've given one reason why you might be pushed towards too small a system. 

One thing to be aware of is that the regulations have created an incentive for installers to install smaller inverters, which might also push them to recommend fewer panels for your system.

The inverter is the crucial part of any solar system - it converts the DC power from the panels to the AC power used in your house and the grid. 



When installing the system it is necessary to inform the local Distribution Network Operator (DNO). There is a process to do this. 

For a smaller sized inverter (under 3.68kw) it is only necessary to inform the DNO of the installation (G98). 

Over 3.68kW?

For a medium or large inverter the installer has to seek approval (G99). Any decent company should include this service. 

However, this process takes time and the outcome is not guaranteed - you might be told that the local network cannot cope until it gets upgraded in the distant future, or, that your own supply line needs to be upgraded (though this is unlikely unless you are having a lot of panels installed). 

More importantly, as well as time spent on the process, it also costs money - companies have to pay to go through this process. 

For this reason, it is conceivable that companies would push customers towards a smaller system, of around 12 panels or fewer, even if they would do well to get a larger one. 

Essentially, this regulation has created an incentive for installers to propose solutions of a particular size. I expect that many people will end up with systems sized at this level because of this regulatory quirk. 

Fortunately, although I wasn't really aware of this issue when I ordered my system, I did notice that a 5kW inverter had some advantages of a 3.68kW one AND was virtually the same price. I therefore mentioned this to my installer, who agreed to install the 5kW. 

This was a risk for the installer, but I have got a much more appropriate system as a result. 

Plus, if I do add a few more panels in the future the inverter will be able to process the higher peak energy created, which a smaller one wouldn't manage. 

Final thoughts

Overall, I am a huge advocate of solar systems for climate mitigation reasons, but they also make a lot of financial sense.

There is a lot of good advice out there from people who know their stuff. There are several You Tube channels on the topic such as Gary does solar and Tim & Kat's Green Walk

Most installers will give you good advice and consider the relevant factors. 

However, I wanted to flag up a few things that might lead installers to push people away from using their roof to its ideal solar potential. 

Monday 10 April 2023

Good video explainers of Climate Change

Someone on twitter once asked me for good videos on climate change.

I didn't have a great answer then, but I think I would now. 

A simplistic understanding?

I recently watched some videos that demonstrated that I, like most people, had the sort of 'high-school' level understanding of climate change. 

Sabina Hossenfelder is a top physicist and she recently admitted she had just the basic understanding until recently. In a recent video she explains the basic and more accurate versions


Denialist tricks

You'll notice that climate science deniers are often very adept at challenging the simplistic 'school-level' version of climate change. 

They often make claims about climate science that no scientist would support or believe, like that carbon dioxide is the only thing that affects the climate. However, their demonstrations that CO2 isn't the only thing that matters does not debunk the key claim which is that our CO2 emissions are having a serious impact.  b

Denialists aren't engaged in honest science - they simply cherry pick anything that appears to support their pre-determined agenda. They are driven by politics rather than science. 

We have clear evidence that the Earth has been warming in recent decades. Denialists can't deny this any more, so they have to come up with other explanations for the warming - often that it is due to the sun. 

Simon Clark has a very good video explaining why the sun CANNOT be behind global warming



I think this was the video that helped me to understand the point about how climate change really works. The warming of the atmosphere due to the greater amount of CO2 (and other GHGs) puts the system out of balance. Since it isn't possible to emit all that extra energy out to the void of space it has to come back down to Earth. 

It is no doubt hard to know for sure what impacts all that extra heat energy is going to do, but it seems hubristic to think that adding a load of heat to finely balanced systems around the world is going to work out well.

A very good lecture

For a very straightforward (and well-produced) full lecture explaining climate science I can recommend Myles Allen's Gresham College lectures, particularly The Atmospheric Physics Behind Net Zero



Do add further suggestions below! 

Friday 31 March 2023

We've gone solar! Should you?

Last Summer I discovered that having an East-West facing roof didn't make solar panels pointless after all, and so we found a company to install them (don't worry Mum - we got three quotes). 

Anyway, after a lot of delays we got the system installed three weeks ago.



System capacity

For those interested in the details it is sixteen 395w panels (two strings of 8) with a 5kw inverter and a 9.5kwh battery. 

We also had a smart immersion heater installed into our hot water tank. Well, not that smart - it doesn't do solar divert. But that doesn't matter because the battery can make up any difference if there isn't enough solar at the precise moment we are heating the water. The aim here is to stop using gas for half the year. 

In the three weeks so far (in March) we have been almost entirely self-sufficient for electricity and hot water. 

If you look at our energy usage I don't need to tell you when we had the system commissioned (they have to empty the battery and then fill it all the way to test it), and our first full day of solar. 

Even the days when the battery wasn't able to cover all our usage and we briefly drew from the grid (because we had too many appliances on at once or because it was slightly too slow to react), the usage was still lower than the day we were away from home (28th Feb). 

This was March - there should be plenty of surplus over the Summer months when days are much longer here in the UK. 

FYI - I'm not expecting to cover our usage from November to February, but might get a little extra power, we will see!  

Payback period? 

I signed up to this in order to reduce our carbon footprint, safe in the knowledge that it would be a good investment given that it would offer a saving on energy bills and that the panels would last at least 25 years (that is the warranty period). The inverter is unlikely to last that long, and the battery will start to degrade eventually, but they will pay themselves back too. 

It is hard to work out exactly when the "payback" period would be, because it would involve a lot of assumptions about future energy prices. 

The reason why I was very confident that it would be a good investment is because I've been following the climate and energy issues for a few years now and I'm convinced it is necessary to move to net zero (in fact I believe it should happy MUCH more quickly than our government is planning, given the reality and (im)morality of climate change). 

Self-use only?

The focus of the sales pitched when I ordered the system was on self-consumption. The idea is that you want to save yourself from importing electricity from the grid, which is expensive. 

However, I was keen to get more solar panels than most of the companies thought was sensible because:

  • Those of us with suitable rooves should be supplying clean energy to the grid
  • Energy prices could rise further
  • I want to offset my usage at other times of the year
  • I pay for offsets, so this is an extra saving that doesn't get factored in to payback calculations 
  • As renewables provide more and more of the electricity demand supply and demand will be 

Dynamic Pricing

However, since we ordered our system, Octopus Energy (a very forward-thinking company) have introduced a new tariff for people with solar and battery. 

This is a relatively dynamic pricing structure in that it varies at different times of the day. 

They already had some tariffs with cheap overnight prices (good for a home battery), but these were only available to people with an Electric Car and we haven't (yet) got one of those. 

Octopus Flux

The idea behind the new Octopus Flux tariff is that people with a battery can supply the grid during the evening peak period. 

The export rate is much higher than the paltry standard amount that focuses everyone on self-consumption.  

Now, I don't know if we will max out our battery every evening. Doing so might shorten the life of the battery. 

However, we have West-facing panels and I am hoping that they will be generating well into a Summer evening, and that we will be paid handsomely for that. Perhaps a few extra pounds on a sunny day, which would obviously reduce the payback period substantially. 

And part of the reason for wanting a battery is to ease the peaks and troughs that we place on the grid. After all, gas is always the source of the marginal (next additional) unit of energy (hence why gas sets the price). 

Essentially, in the months between ordering the system and getting it, I think that the expected returns have increased already as a result of this Octopus Flux tariff. We will be receiving several times the export payments I expected when ordering the system. It will pay itself back quicker than I expected.

The Future?

As part of the (absolutely necessary) move to net zero the following will be necessary:

  • Much more renewable energy for the electricity system
  • Electrification of transport (cars)  
  • Electrification of heating (heat pumps)
Demand for electricity will increase, while generation will be more variable.

In the future the above logic about marginal use should become more and more relevant, so that pricing better matches supply and demand.  

I expect that pricing will be even more dynamic than the Flux tariff. Price will also vary depending on supply of renewables and demand at that time. 

So rather than have pre-set times when the electricity is cheaper or more expensive it would vary depending on the amount of wind/water/solar electricity available and the demand of other users. 

People with batteries can shift their usage from the high-demand-low-supply times to the high-supply-low-demand times. They can, and should, be paid for doing this. 

Essentially, people who don't have batteries will have to pay more for their power, while people with batteries will be able to make use of cheaper prices.  

Solar helps with this because you are generating yourself, filling up your battery along the way. Having a battery makes sense with solar, but it also makes sense independently. 

Ready for net zero?

Essentially, if you are doing any kind of renovations to your house make sure you:

  • add solar panels as a lot of the cost is in the labour involved (the scaffolding, electricians etc.). The panels themselves are pretty cheap (about £200 - £300 each) and will pay themselves back in no time. 
  • insulate to as high a standard as possible to limit heat loss (electricity might be more expensive when it is very cold as everyone will have their heating on at once)
  • prepare for a high-efficiency heating system (a heat pump) by installing a low-flow system - underfloor heating or large radiators
  • have an electrical system that can cope with adding things like a heat pump, EV charging and battery in the future (though I was reassured it would be possible to extra things on even though our fuse board is now full).
Essentially, plan ahead for net zero! Renovations don't happen often and you don't want to have to do it again. Net zero has to come, and few houses are ready for it. 

Thursday 2 February 2023

Free Speech: free online materials

I’m pleased to be giving two talks on the upcoming Day School The Limits of Free Speech: Offence, Hate Speech and No Platforming on Saturday 25th of February 2023.

I thought I would put up some online resources that would be useful to anyone looking to attend the event.

Free online reading

Background reading on Freedom of Speech

van Mill, David, "Freedom of Speech" in Zalta (ed.) The Stanford Encyclopedia of Philosophy (2021)

Anderson, Luvell and Michael Barnes, "Hate Speechin Zalta (ed.) The Stanford Encyclopedia of Philosophy (2022)

Bonotti, Matteo, and Jonathan Seglow. "Freedom of expressionPhilosophy Compass 16, no. 7 (2021): e12759.

If you want to buy a short introductory book, I recommend Nigel Warburton's Free Speech: A Very Short Introduction

JS Mill's classic (and very readable) text On Liberty (1859) is available cheaply, but as it is out of copyright you can view it online (also see below for a free the audiobook)

More advanced readings

I’ve noticed that a lot of the works of Alexander Brown, an author in this area, are available free online. If you want to read something more advanced you could read one of his papers, or his book.

Videos

There are lots of videos online discussing liberty, free speech and hate speech.

Two authors for whom I have a lot of respect, Jeremy Waldron and Ronald Dworkin presented their contrasting views on the issue of hate speech in 2013. Links here.

Audio

(listen online or download to your podcast app)

Audiobooks

Some people have kindly recorded J.S. Mill’s On Liberty (1859) as an audiobook

Nigel Warburton reads the Chapter John Stuart Mill on Liberty from his book Philosophy: The Classics.

Podcasts

Tim Scanlon on Free Speech Philosophy Bites (2008)

Rae Langton on Hate Speech Philosophy Bites (2012)

Caught between free speech and hate speech Big ideas (2018)

Jacob Mchangama Clear and Present Danger - Free Speech Podcast (Many episodes!)

Freedom of Speech: Censors working overtime Origin Story (2022)

Controversial Ideas and “No Platforming” with Jeff McMahan Why we argue (2019)

Deplatforming Jurisprudes (2022). 

Political Philosophy and liberty

These materials also provide a useful background to the online short course Political Philosophy: An Introduction, which I often teach.

This 10 week course runs three or four times per year.  

Liberty is one of the topics covered. We look at JS Mill’s harm principle and whether and how you it applies to various cases.

I hope to see you on one or both of the courses above!

Sunday 29 January 2023

Keen and Slemrod Tax Wisdom and my tax proposals


If anyone is doubtful that taxation is an interesting and important topic, I suggest they read the recent book Rebellion, Rascals, and Revenue: Tax Follies and Wisdom Through the Ages by Michael Keen and Joel Slemrod. 

The authors are experienced tax experts, but they explain public finance not through dry mathematical equations but through interesting anecdotes and stories. They present numerous unusual taxes and charges that have been applied over the centuries. For instance, a bridge that people without shoes could cross for free while the shoed (shod?) would pay toll. 

The book covers all the important topics to do with taxation and alternative forms of government funding. It even contains a lot of puns in the section title headings, and I wonder if there were some that I didn't get. 


For those interested in finding out more, perhaps while waiting to get hold of your copy of the book, the authors spoke about some of their favourite examples from the book in a video: 


Tax Wisdom

One feature of the book is that towards the end they review some of what they have taken-away from their years of study and engagement with tax systems throughout the world. They end with their thoughts about where tax might be heading in the future. 

I was pleased (relieved) to see that several of their recommendations and predictions included several things that I have attempted to do with my own tax reform proposal, which I have called the CLIPH-Rate tax, set out in my book Rethinking Taxation. 

I thought I would flag up a few of them here: 

New technology

Keen and Slemrod highlight that the use of big-data could be game changing in uncovering tax avoidance and evasion. I agree. 

This, plus greater integration between taxation and the financial payments system, should create a lot of opportunities to do things differently. João Félix Pinto Nogueira has recently argued that there could be a different model of taxation in the future, and I think this is right.

I believe that the use of real-time calculation (as is now applied in the UK) allows a different way of doing tax. And it needn't just be applied to payments from employers. (In the UK this income tax withholding is called real-time PAYE, but there are similar systems with different names in other countries.) 

All financial transfers could be taxed in real-time based on the recipient's current tax-rate. By current I really do mean current - the tax authority could update their tax rate and inform the financial institution to withhold the correct amount on all transactions. 

Integrating real-time tax calculations into all payments means that there would no longer be any need for payments between taxpayers and the tax authority. Any corrections could be applied at the next payment to that individual. 

Of course, this could include "negative tax" payments to increase someone's payment if they have paid too much tax in the past or if they receive additional support from the government, for instance because they have a very low income or require some extra support due to their personal circumstances (disability for instance).  

Integrate the tax and earnings subsidy systems

This leads onto the next suggestion. Running a real-time system with negative tax rates for low-earners, means that the tax system can be integrated with the benefit system, and used to make payments to recipients. 

A potential problem with this is that support systems tend to need to react swiftly in order to ensure that people in difficulty (for instance who have lost their income) can survive. 

However, I think that using technology and providing a Guaranteed Work Programme (which I think should be offered alongside my proposal), it should be possible to ensure that everyone has continued access to an income. Some special benefits could continue separately, while others would be rolled into my proposed single-tax system, and payments could be triggered regularly if needed. 

Extend the tax period beyond a year 

Keen and Slemrod highlight that 365 days is a rather arbitrary amount of time for taxation calculations. Given that it is the time it takes for the Earth to go around the sun, reflects agricultural seasons, and is  the basis of calendars, 365 days is more sensible than a 250 or 450 day tax year. 

Nevertheless, any given year may not be reflective of the taxpayer's overall situation. As Vickrey and others noted long ago, a longer period would be more appropriate. Indeed, where the tax system is progressive, as I believe it should be, this becomes all the more important. Large payments would then be averaged over many years, rather than included within a single tax year. 

I have therefore proposed, a little like Vickrey, that we should apply a lifetime average tax calculation. This has many advantages, but requires a different way of calculating taxes. 

This allows more progressive tax rates, because these rates would be applied across many years of life. As well as being fairer to those who have fluctuating incomes, and more accurate, this means that people would have no incentive to artificially arrange their payments to occur on one date rather than another in order to fall into a particular "tax year." 

Tax economic rents very highly

One worry about taxation is that it will discourage productive behaviour, but this is the case for some taxes more than others. 

Economic rents occur where the owner of something (their land, spare money, their skills/talents or whatever) gets a higher return from employing it than they would require in order to put it to that use. 

Taxes on economic rents are an ideal tax in this regard because they do not impact on economic behaviour. A landlord will rent out their premise to the highest bidder, whether they get 100% of that amount or 50%. Perhaps at a certain point they would decide it is not worthwhile to rent out their premise and leave it unoccupied, but that would mean that they wouldn't be getting any return on their ownership.    

They are also an ideal tax because they tend to be progressive - it is almost by definition the economically fortunate who have the opportunity to generate economic rents. The less fortunate don't have anything on which to generate rents. 

In practice, it is hard to know what rents are ex ante (before the fact). So a pure rent tax is something that exists in theory and not in practice.

However, I believe that my Hourly Lifetime Averaging system would achieve tax rents well by proxy. This is because:

  • It taxes all income, earned and unearned in a very progressive way 
  • It reduces the tax rate for those who provide their time into the economy through working (or get some credit for not being able to do so)

Tax leisure 

To put it differently, the system I propose taxes leisure. 

This relates to another piece of tax wisdom in the book. Actually, in the book the suggestion is to tax complements to leisure. Taxing the things that people would like to do if they weren't working would make working relatively more appealing. 

I go one step further and just tax the leisure directly. As I note above, the hourly averaging system rewards people who work more hours with a lower tax rate (at least up to a maximum point). 

So someone who has received a lot of income without doing much work (a wealthy heir for instance), would face a very high tax rate (at least until they have worked a lot of hours). Meanwhile, someone who works for a low wage would have a low--possibly negative--tax rate. 

Both have an incentive to work, and the heir can be taxed at much higher rate than under any other system, and the low-paid worker will be able to get a more generous income supplement that won't be as harmful to the economy.  

If someone retires earlier, or works part-time rather than full-time, they would face a higher tax rate on their unearned income. There is nothing wrong with working less, of course. There is more to life than working. However, the wealthy and talented can afford to work less while the poor cannot. Hourly averaging would incentivise everyone to work longer. 

It also retains the incentive to work in higher productivity ways too, since people will always benefit from having a higher income as well. It takes account of hours at work and income, rather than simply income alone. 

Final Thoughts

I don't know what Keen and Slemrod would make of the CLIPH-rate tax. I can imagine they would consider it too idealistic to introduce such a major change, since piecemeal reforms are always easier. They might also argue that it would be hard to administer (they have two chapters on tax gathering and the difficulties in collecting accurate information from people who benefit from hiding this). 

However, it was reassuring from my perspective that the conclusions of the book pointed in the same direction as the proposals that I made a few years ago. :-)

Tuesday 24 January 2023

Book Review: Political Philosophy and Taxation

I was pleased to be asked to review a book on Political Philosophy and Taxation for the British Tax Review, and I wanted to provide the text here on my blog for the benefit of those who do not have access to the journal. 

Legal disclaimer: This material is (a slightly edited version of) the review first published by Thomson Reuters, trading as Sweet & Maxwell, 5 Canada Square, Canary Wharf, London, E14 5AQ. It was published in the British Tax Review as "Political Philosophy and Taxation (Springer, 2022), by Robert van Brederode (ed.) (2022, 5, pp662-5)" and is reproduced by agreement with the publishers. 

Review of Political Philosophy and Taxation, by Robert van Brederode (ed.) (Springer, 2022)

As someone who teaches an introductory course on political philosophy, I was pleased to be asked to review this work,  which really is—as it claims—the first book providing a comprehensive overview of political philosophy and taxation. The textbook for the course I teach (Wolff, 2015) begins with the suggestion that political philosophy might be about “Who gets what?” and “Says who?”  Put like this, the link between political philosophy and taxation is abundantly clear. 

There are, no doubt, many ways to structure such a book. It could be organised by topic like the abovementioned textbook, which covers the key topics of:

1) The nature and justification of the state.

2) Who should rule? Should we have democracy, and if so what kind?

3) Liberty and rights.

4) The distribution of property.

5) Justice for everyone, everywhere? (On whether Western political philosophy has ignored or excluded any important groups or perspectives.) 

Again, all of these topics are relevant to taxation, particularly property and distributive justice. However, unlike the above textbook, this book is organised around different schools of thought within the Western tradition. The subtitle of the book describes it as a history of political philosophy. The book does indeed provide a detailed intellectual history of several influential schools of (Western) thought on the topic, explaining how key thinkers from those schools approached the topic of taxation, situated within their wider philosophical projects. This is a sensible move. Experts in different schools of thought can then take turns in summarising each, indicating where key thinkers have said anything relating to taxation. 

One question this raises is whether the book is an exercise in intellectual history or directly one of the philosophies and their implications. The first and last chapters by the book’s editor are certainly not intellectual history, but rather direct interventions in debates. The other chapters tended to fit the historical brief more closely, reporting on the relations between various thinkers and their views of taxation.  Two, acknowledged, exceptions were Chapter 8 on legal positivism and the final chapter (11) where the editor provides his own proposal for radical tax reform. There is a good case for organising the book by historical school, though that places additional pressure on the introductory chapter, a point to which I will return. 

Interestingly, most of the authors are not obviously primarily political philosophers, given their departmental affiliations. However, they all clearly know their respective schools of thought very well indeed, often because they use them in their own research on taxation. Certainly, taxation is inevitably a multidisciplinary topic, hence the need for all who write about it to have a good understanding of political philosophy. 

Which “schools of thought” should be included in such a book? The book contains a lot of the ones I would expect, but I found some of the choices surprising. One thing to make readers aware of is that the book leans libertarian, which is clearly the editor’s own approach given the chapters he has authored (the first and last). Perhaps that is a perk of being the editor, but I think it should have been made clearer at the outset, or, perhaps even better to avoid these strong interventions given that they did not fit with the stated brief of the book. 

There are several chapters that are more left-leaning (on socialism, egalitarianism and feminism), so the book still provides a good overview of most of the relevant views of taxation. However, questions can be raised as to whether there was a need for chapters on conservatism, classical liberalism and libertarianism, plus the two non-historical chapters, given the overlap between them. 

I think that the libertarian leanings of the book could give a false impression of the way that contemporary political philosophers would approach taxation. I undertook a poll of 78 philosophers on the topic and one third approached the topic in a liberal egalitarian way (including myself). Thirty per cent took a socialist approach and about 15 per cent consequentialist, most of whom selected “centrist or progressive” rather than classical liberal.  Seventy per cent of responses indicated that liberal egalitarianism represented the dominant approach. A lot of the debates within this school were mentioned in the introduction but not actually presented in the book (except in passing). (For more on the literature see Pedersen) 

There would have been a case for a chapter on luck egalitarianism, and indeed Ronald Dworkin (2006) has an entire chapter on tax justice in a book which was not referenced at all.  

Another omission I thought was discussion of Aristotelian-inspired views (perhaps other than in the chapter on conservativism), which are particularly to be found in theories of desert, participatory democracy and communitarianism. Natural desert is a distributive theory, a rival to Nozickean libertarianism, utilitarianism and the various forms of egalitarianism (see Campbell, Miller). Desert theory is not at all popular with political philosophers—it had no advocates in my poll.  However, there is an argument that desert is the common approach of the public (see Shiffrin).  There was a section on desert in the introduction, but this was a very misleading discussion, presented as an attack on luck egalitarianism, a view which is neither desertist nor—we recall—represented in the book. 

Desert might also be relevant to those who believe that political decisions should be made democratically as a representation of the views of the common good, or as an expression of their views or values. Communitarianism was mentioned as an example of a view opposed to libertarianism in the introduction  but not again in the book. The final chapter did have “Democracy” in the title, but this did not present a history of the arguments for and against democracy, which go back to Plato’s Republic, but was in fact highly opposed to democracy. Agreeing with anti-democratic libertarians that “an electorate that is uninformed, underinformed, or misinformed”  will mean that majority rule “opens the door for the misuse of power to the detriment to the interests of others”.  “Majority democracy violates the principle of equality as it is based on coercion of the many”,  which apparently means that a decision by the majority to impose taxation would violate the “principle of liberty”.  These apparently inviolable principles are neither explained nor referenced.

Philosophy of colonialisation and race is another possible approach that could have been included, though this has methodological affinities with feminism and intersectionality as mentioned in the chapter on feminism. The historical-school approach taken also creates the problem that important contemporary debates are omitted, about global justice for instance. 

Most of my criticisms are of the introduction, as I’ve hinted above, which represents a missed opportunity. The first words of the introduction are “liberal individualism” but what is this and why start with it? Perhaps because methodological individualism was the starting point of Hobbes’ political thought, which later begat liberalism (though Hobbes was no liberal). If the book is written for newcomers to political philosophy it should have explained what that subject is, perhaps mentioning disagreements over method, such as whether liberal individualism is the right approach. Another important thing to cover is to explain the philosophical topics and disputes that bear on taxation, and perhaps to explain some common terminology. These are mentioned, but too obliquely for the complete novice who knows little about the subject. 

The introduction is very long, but far too much of it is spent attacking views that will be presented later in the book. There are seven pages criticising Murphy and Nagel (2002) on “everyday libertarianism,” even though their argument is presented in three pages near the end of Chapter 9 (pp.335–338).  I can understand that their arguments should be presented, since they are very important. However, the introductory chapter should really ease newcomers into the discipline, not simply attack the dominant views. 

The introduction began and ended with a key point that I would expect to find; why have a book on political philosophy and taxation? Some good points were made here, but more could have been added. The book is quite advanced, but it should be useful for graduate students and academics whose work relates to taxation. Tax practitioners may also benefit from considering political philosophy, though they might need to read an introductory text first. However, political philosophers too could be interested in reviewing what different schools of thought have to say about taxation. Those looking to write about tax will also benefit from having the dispersed writings of thinkers compiled together in one volume. 

Overall, as a political philosopher with a focus on taxation, there was little difficulty in selling the importance of a book with the title Political Philosophy and Taxation on me. The chapters were capably written by experts, and I learned a lot from it. Indeed, I found myself wishing that this very useful resource was available when I began my PhD on the topic nearly 15 years ago. 

References:

Campbell, T. (2002). Justice. Palgrave.

Dworkin, R. (2006). Is Democracy Possible Here? Princeton University Press.

Miller, D. (1999). Principles of social justice. Harvard University Press.

Murphy, L., & Nagel, T. (2002). The Myth of Ownership: Taxes and Justice. OUP.

Pedersen, J. (2020). Distributive justice and taxation. Routledge.

Sheffrin, S. M. (2013). Tax fairness and folk justice. Cambridge University Press.

Wolff, J. (2015). An introduction to political philosophy. OUP.