Game Design, Programming and running a one-man games business…

Month: November 2024

First full solar month stats

Ok, the sun is still in the sky, but its late enough that I am going to declare November over now, and blog about my generation from my solar farm. First here is the exciting main chart thing:

So thats 34.2 MWh, or to put it in rooftop-solar or home-energy terms, 34,248kwh of lovely renewable green solar power! Not bad I think for a pretty wet, cloudy November in the UK. June in the Sahara desert would be different…

A crude extrapolation to 12 month would give 410MWh which is obviously way too low. I am expecting more like 1,000-1,200 MWh for the whole year. If I can get 1,200 that would be nice, and I would not worry too much about the business case for the whole thing. However that depends on the ongoing costs. I am still comparing quotes and discussing ways to cut that. The actual annual sums for each individual component always seem reasonable, until you multiply them by 25 years…

I do have some other software that analyses the output and gives an estimate of how good or bad you generation has been. That software suggests that November output for me has been noticeably better than expected, but you shouldn’t get too excited extrapolating from a single data point. Lets not forget the panels are new(ish) and clean(ish), and that will not always be the case. The real reckoning will come after a full years generation and operations.

In other news, I got paid! So its only for part of October (we had some downtime, and also did not switch on until the 4th) but the money turned up in my account on time and the right amount, which is never something a small business can take for granted. If you are a UK residential electricity customer of OVO, then I am providing some of your power :D. I get paid for the power plus VAT (sales tax in UK of 20%) so I have to pay that tax to the government (useless busywork!). It definitely feels good to have even just this ONE entry in the company accounts that is green instead of red!

Global investment and the coming chaos

When I am not making games or building a solar farm, I am quite into investing on the stock market. I am NOT a day trader, but over the years I have built up enough to invest that it does require me to constantly keep an eye on stuff. I also like reading about the world, and technology, and politics, so it fits in nicely. As a result I spend a lot of time thinking about where to invest.

Investing is super hard, because it involves keeping emotions in check (hard), being objective (hard) and for best results, being happy for absolutely everyone to tell you that you are wrong (I find that quite easy tbh). It also involves a lot of risk, and you have to be ok with all of that. Plus it involves a lot of checking numbers, and being objective, and not making panicked decisions.

Because I think that short term swing/momentum/day trading is more likely to result in losses than gains, I focus on picking shares that will give me a decent return over the next 1-5 years. I have found this is the approach that works best for me. Its certainly not as EXCITING as day trading, but I actually want results, not a sugar rush. So I find myself thinking hard about what the future may bring. Ultimately I am a value investor: I am buying stocks where I think the underlying company will be very profitable in the future. I DO hold some dividend stocks and bonds, but most of my picks are for stock-price-growth, where I assess that a company will have rising profits in the next few years, and I will sell once the stock price catches up to my point of view.

Individual companies can be very good investments, regardless what the people selling funds and generic investment advice tell you. If its obvious that 50 of the stocks in the FTSE100 are rubbish, why would you want to own ANY of them? If your funds are limited, indexes and funds might make sense, but when you are able to pick 50-100 stocks, its worth taking the time to pick winners.

So anyway, with all that in mind, what am I currently thinking about when it comes to upcoming events and themes that might influence investment? I have a bunch of ideas:

  1. The decline of the USA : This is quite a big one, and probably very triggering for people who live there, but I think USA in 2024 is the UK in 1930s-1940s. A big global superpower that has not yet realized that it is screwed, despite all the signs being there. The US has incredibly tribal politics, huge social-division, bad levels of skills/education, bad infrastructure, a colossal debt problem, and a bad global image. Sure, the $ is a popular global currency for now, but in 5,10,15 years? I think China is clearly overtaking the US in everything that matters. I also think the US is so focused on its own awesomeness that they will not manage the decline well. I am hugely over-invested in US stocks but will be diversifying out of there.
  2. Clean Tech Revolution: The entire planet will embrace electric cars, solar & wind power, battery storage and heat pumps. Nuclear Fusion is too late, too pricey and too concentrated. There is no stopping this transition now. Along the same lines we will likely see a global transition away from meat consumption towards vegetarian or vegan diets. Thats a movement that is just too big and especially too popular with the young for it to be stopped.
  3. Rise of Asia: I mostly focus on China. The predominant view in western media is filtered through frankly xenophobic and tribal hatred of China in the US media. But the Chinese are starting to lead in tech, science, infrastructure, and geopolitical influence as well as manufacturing. They even have their ow space station, something the USA cannot afford. I do not expect war with Taiwan, but I expect savvy Chinese leaders to rattle just enough sabers to keep bankrupting the USA with its ridiculous military budget
  4. New Space Race: Not just spacex, but a whole range of new space startups is revolutionizing our capabilities in space. Starlink is the first tangible benefit but there will be more. Space Tourism will be one part, but zero-g manufacturing may well become a thing for some specialist pieces of technology. I fully expect all major cabled telecoms links to be replaced by satellite networks soon. Its just so much simpler.
  5. Fall of Russia / Chaos in Europe: Russia will have a messy transition when Putin dies. The country is not in a good state, but cannot be allowed to collapse into chaos because it has nukes. I can imagine a world where Europe steps in to handle the transition, in a similar way to the handling of eastern-european ex-soviet countries after the USSR collapsed. It will be messy and awful. I do not expect the UK to rejoin the EU, so we may escape some of the costs. It will be tough
  6. Climate Chaos: Insurance companies are likely screwed. We have been lucky so far but one day a big hurricane or flood or other climate event will wreck a big famous city. Might be New York, might be London. Who knows. Impact will be extreme. I will not buy insurance company stocks. Also worsening weather will destroy so much food production. I sometimes speculate on commodity prices to play this, and may do more. Global food price rises may destroy fast food chains, when people can barely afford the ingredients and cut back on dining out or takeaway food out of necessity.

Thats my list for now. I also have a speculative investment in quantum computing, just in case it really becomes a thing. I also expect AI and robotics to be big, so hold a lot of AI/Chip/Robotics stocks. Those are quite trendy though, so those investment ideas are less contrarian.

Solar Farm month#1: First ever earnings! How to earn £669 an hour. Maybe. (kinda)

OMG its actually happened, I have been sent an invoice (well a statement really I guess) for the sale of my solar power for the first time. The spoiler is that its about what I expected, but that doesn’t stop me breaking it down in extreme detail! If you are googling for the details of what a power purchase agreement (PPA) for a solar farm is, and how its calculated and how much you actually get paid etc, then you have probably found the right blog :D.

So firstly, lets have some disclaimers. The farm was only energized on October 4th, and this payment is for October, so we already lost 4 days (we didn’t switch on at 8am :D). We also had to turn everything off for two days later in the month so that we could fill in some earthworks around some high voltage cabling, and they wouldn’t do that while they were live. TBH they were only 400v I think, and this seemed a bit overkill to me, but then I don’t drive a digging machine :D.

Also be aware that this was OCTOBER, so not exactly peak sunshine roughly half way up the west side of the UK, so do not extrapolate this in a linear sense to be a typical month because it was not. So how much is the total paid?

Roughly £5,300

To break it down in more detail, the amount is calculated like this:

  • Electricity output £4,400
  • REGO Certificates £0
  • DUoS benefits £945
  • DUoS costs -£12
  • Triad benefits £0
  • Admin fees -£25

All figures are slightly approximated as I’m not sure what I can / cannot be explicit about and don’t want to be told off :D. Anyway to break it down…

Electricity output is the amount I can see that many MWH of power for. More on that later.

REGO certificates are things I do not have yet due to stupid insane *are you kidding me* levels of bureaucratic BS, but I WILL get them, and they will be backdated. I need to collect a ton of paperwork and then sit and wait for months for the awarding government body to try their hardest to find a missing comma or i without a dot. I wish I was joking.

DUoS. Well this is a whole world of insane complexity. The acronym stands for ‘Distribution Use of System’. Its the bewildering network of charges and fees and credits that are calculated depending where you are in the national network of distribution power lines. Basically if you generating power next door to a substation, and the re is an aluminum smelter next door to that, then all of the power you generate will stay local, and not flow out onto the wider ‘national grid’, so you are not heaping pressure on the big pylon networks. Thats the ideal situation. Amazingly, you can get both charges and benefits from the exact same system. My solar farm is fairly remote, but small enough that our energy will only ever go to the nearest town. So we got charged £12 for being so remote and using some local pylons, but credited £945 because we are remote enough that us powering that town a bit more means LESS pressure on the big power lines heading from elsewhere to that town.

Think of it as toll road charges.

Triad benefits: This is something very weird and arcane that makes DUoS look simple. Here is the googled explanation.

The Distribution Network Operators (DNO) pay what you might call a standing charge to National Grid (NG). This charge is set according to the amount of electricity being drawn by the DNO when the UK as a whole is using the most. More specifically, it is the average MW being drawn during the three highest half-hour periods (subject to being a minimum of 10 days apart) of UK electricity consumption between 1st November and 28th February inclusive. The cost incurred by the DNO is then passed on to energy suppliers who in turn charge it to their customers. (from:https://www.nowthenenergy.co.uk/news/triads2021 )

If you think ‘WTF? why do they choose three? and why those months? and why half hour? Yup : welcome to the UK energy market. You thought C++ was complex? Ha! Anyway, looks like we are unaffected which is good?

Now actually I will get paid MORE than this, because I get paid VAT (sales tax) but I then have to pay that to the government anyway, so its just a bureaucratic waste of time and doesn’t figure into the calculations.

But Wait! There is more! The ‘Electricity output’ figure is more involved. My actual PPA did not start until November 1st. From that point I get a fixed price per MWH for the next year, but up until then, the price was ‘floating’. I got paid the ‘market ‘system sell price’ price each half hour. (The whole UK commercial energy sector works on half hour billing). They send you a handy spreadsheet showing what the price was every half hour for the whole month. Do you think it was relatively stable? Ha. Behold:

Well I guess two things stand out right? Firstly what the hell was that spike? and secondly WTF does it go negative? To answer the second part first, YES, at times I was being charged actual money to generate power. When its super-windy and super-sunny, and mild, and the Uk has too much energy and we cannot cope with any more, the wholesale energy price goes negative. It happened a few times that month, but as you can see its very short lived. With a solar plant, you can’t easily switch it off (and you wouldnt want to keep turning it off and on again), but if you are burning physical fuel like gas, coal or oil, or even wood, then that price signal tells you to stop imemdiately, which is why I think it recover.s

But hey-ho check out settlement half hour #564, when I was paid a whopping £669 per MWH. Oh yes. Sadly there were only a few brief periods of this.It seems to have happened on the 11th October about 75% through the day (so 6pm) Lets look at country wide stats. Seemingly no explanation here:

But in a sense… it doesn’t matter, because annoyingly its October and solar output at 6PM on 11th October was likely pitiful, if not zero. I checked…, and it was 4.89kw at that time. So the super high price only earned me £3.27 per hour. Actually less, because the power trailed off and the price dropped off too.

FWIW this is why in some cases lithium-ion grid-scale batteries can make sense. If I had one (I ran the numbers and couldn’t justify it for such a small site), I could have stored 1 MWH in it from earlier in the day, then let it flow out at 6PM and pocketed a handy £669. The trouble is I would need about £200,000 to install that battery, and you need to be sure you are going to get enough of a return on those occasional spikes to make it worthwhile. Plus other people are doing the same thing, so as more grid scale storage is rolled out, that chart is going to look a lot less spiky. Especially over the lifetime of the farm (25+ years). Note you can also do ‘peak shaving’ which improves the economics. I blogged about that previously.

Anyway, all very exciting to see actual payments heading my way. 10 days until the money is transferred. It will be WEIRD to see money flow INTO this company. Its been an absolute money pit until now :D.