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

Month: January 2025

Home battery storage expansion, not quit resilient…

Just over two years ago, I took the plunge and added a lithium-ion storage battery to my home. It went in the cellar. Its been doing its job faithfully ever since, and has been pretty cool. I reckon 85% of our energy usage has been either free or off-peak electricity since we got it installed. Here is a pic:

The original blog post is all the way back here. Anyway, today we had someone come to the house to talk about doubling it, and having not 9.5kwh of storage, but 19kwh, by sticking another one right next to it. Cunningly I had forward-planned this, by asking them to make that big wooden backboard big enough for two batteries during the initial install.

At the time, I was not sure what the right size of battery would be. We nearly got a Tesla powerwall, but they were hard to get hold of. They had a 13kwh capacity at the time, so we ended up with slightly less at 9.5kw. It also has a separate inverter (some modern batteries have the inverter in the same box now) and the inverter is limited to just 3kw input/output. So that means if at any point we draw more than 3kw by cooking/heating/whatever, then we pull power from the grid EVEN IF the battery has tons of charge in it. Now with our solar panels, its a bit different because if they are producing at their peak (about 4kw), we can in theory use 7kw of power and still not touch the grid, but that involves being very organised :D.

I mention the 3kw limit because that is not changing. We could in theory get another inverter but thats a lot more hassle. With a second identical battery its just attached to the wall and then connected with a phat cable and thats it. So we will then have 19kwh of storage, that we can use 3kw per hour. This is not ideal, but we are doing it anyway. Why?

We are likely going to get a heat pump soon, probably this year. Heat pumps are very environmentally friendly, but they do increase the amount of electricity you use. In our case it will mean getting rid of an expensive and emissions-heavy oil boiler and oil tank, so its definitely a win, but our actual electricity usage will rise a fair bit. Right now, we have everything balanced perfectly. In a dark cold winter, we get almost nothing from solar (0.67kwh today), and we use about 11kw. So we can buy 10kw overnight at cheap rates, and combined with some solar, we can still just about get through the day without using peak electricity.

The heat pump will change this. We will have a higher average daily electricity consumption, so in order to have the same fully off-peak strategy, we need more storage, and its cheap enough (£3,900 supply+fit) that we may as well double it. I think we don’t NEED double, but I’d rather have 2 identical batteries for compatibility reasons and would rather be too big than too small. We should get the battery fitted soon, way before we get the heat pump. If you wonder about charging the EV… thats done entirely during off-peak times, so its never a problem.

In an ideal world, we would also have re-wired the entire house to survive a power-cut and run off the battery. In practice this is REALLY hard to do. Its not the kwh that is the problem, but the kw and the amps. Houses can draw up to 100amps in the UK, and no, no home battery is going to provide that. What SOME home battery installs do is wire ‘some circuits’ so they work in a power-cut. So basically you can have all the sockets in one room, or all the lighting. Thats likely low amps and low power. However it does involve running extra cables and a new fusebox in the cellar, and when we looked at what fuses were behind what sockets… it all turned into a bit of a nightmare. So we went for a bit of a bodge…

We are going to (pending the quote) have 2 sockets fitted next to the battery in the cellar on a separate battery circuit. In a power-cut, they will still work. So we can charge up a laptop or phone quite happily down there, although its a cold 1650s brick cellar with a well in it, more suited to a lord-of-the-rings re-enactment than leisure time, so no, we won’t be living down there. On the plus side, thats still better than having NO power in a power cut. We had power out for 6 hours a few months ago, so its a thing here. I also think that given climate change and extreme weather, this will be more likely. All our power cables here are overground on poles, so vulnerable…

It might sound ‘not very resilient’ but we have two log-burning stoves here, so not short of heat, and actually we can always charge phones in the car anyway (even watch netflix and disney and apple tv in the car), so we are not totally bereft :D.

BTW if you follow me on X and saw THAT POST about the solar farm, I have not forgotten to blog about it…I just need more information…

So is 2025 another game dev year for me?

I am currently in a sort of limbo, which will explain why my blog posts have been less frequent. When I was working around the clock all day every day on Production Line and spending the weekend doing blog videos, there was a ton to talk about. The same was true of Democracy 4. But the last few years have been a bit of a strange period for me because my life has changed quite a bit, and I haven’t really blogged about it, so here we are.

Firstly, I have been making games and selling them online since 1997. Its sounds ridiculous to me that I might be about to retire, and yet the truth is that I sort of already have. Kind of. Not really. I had a number of other jobs prior to games, including mad ones such as window-cleaning, boat-building, guitar-teaching and IT support. When I finally made it into game full time I worked at two triple A studios, and THEN I finally went full time indie and made the games most people know me for.

So I’ve been around a while. For the record, I’m 55. Young to retire, but not young for gamedev. Not many people in videos about game development have grey hair (and not much of that any more…).

Somewhere along the line, as I was building up my portfolio of games, two things happened. Firstly, I had enough hit games that I had kind of made retirement money, and secondly I invested that money, and spent a fair bit of time managing the investments. To give some context, I used to work in IT for city trading floors, and did a degree in economics, so markets come quite easily to me, and I am fascinated by the stock market.

To cut a long story short, I did quite nicely from that, and managed to save up the money to build a solar farm. There are many posts by me about it, and I now own two companies: A games one and an energy one. On top of this, the investments fluctuate so much that it means that the ‘average’ year now, I am about as dependent on the stock market for income as I am games. Weirdly, games has gone from a teenage hobby to a full-time job back to a hobby again. This is strange.

Plus I have finally come to the conclusion that what I really need is a stress-free and happy life. There are studies that show that any income over £70k a year no longer increases your happiness. I can state that this is absolute bollocks, and the number is higher, but its not THAT much higher. My current goal is definitely happiness above all else. So given that early retirement is an option, what would you do?

Well it turns out that this question is MUCH harder for me than most people. I just read a book on hypomania, and although I’m not hypomanic… I am a bit. probably more than I care to admit. The idea of me sitting in the garden with a cup of coffee and a book each afternoon seems ludicrous to me. I just can’t do it, or at least I can’t do it every day.

So I ended up making a little game to keep myself busy. I even released it on steam for a laugh. Its a vertical shooter, the exact kind of game that never sells on steam, so nobody makes any more. It took a few months. Here is the trailer:

I think its kind of fun, and I enjoyed making it. Obviously I had a lot to do to build a solar farm, but it wasn’t even 10 hours a week, let alone 40. Now the farm is up and running its likely under 2 hours a week. So what to do? At one point I actually completely re-designed my entire website from scratch, which took a few weeks, but no more (and I am SO glad I did it). Also during this time I started making a new game…

…and I seem to have taken it a bit too seriously. I’ve written code that takes up 1,607,029 bytes of text. I guess the average line is maybe 40 bytes? So 40,000 lines of new code? I now have a complete strategy game that is playable, although not balanced, and likely a bit buggy, and has some missing content. I reused some assets from an old game for some bits, and I will change all those, and also I’ll need new music, although I might even buy stock music licenses for that. You may have noticed that I have not announced this game, let alone shown a screenshot or trailer, although I have a ton of screenshots and it sometimes looks pretty awesome in trailers. I’ve been working on it for about a year now, and do work on it most days. Its not a hobby any more.

I would LOVE to just announce it and paste some screenshots here, but I am teaching myself to be careful, and patient, and only do that when it is ludicrous not to. There is a lot of attention, and stress, and instant feedback you get when you announce a game, and TBH I am not really up to handling any of that right now. I guess most people would say they are exhausted or overwhelmed, and I probably am, but simply do not recognize that.

So anyway, this is the very start of 2025, and in theory this should be an easy year for me. The solar farm is almost 100% done and should just tick along and make me content and happy. I do not have any pressure to release a game this year, and I can chill out. Obviously I won’t chill out, so the nearest thing for me is to just work on the thing I am secretly very proud of, but not expose it to the world for judgement until I am 100% calm and content.

A lot of words to type to say ‘I’m working on a thing’ but I have spare time to type them :D.