"I'm sorry, Dave. I'm afraid that computation is too carbon intensive."


Binary code displayed on a screen.

An interesting snippet about the future of computation: Starting with this build, we are introducing the Power Grid Forecast API. This API empowers app developers to optimize app behavior, minimizing environmental impact by shifting background tasks to times when more renewable energy is available in the local electrical grid. Announcing Windows 11 Insider Preview Build […]

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Why are there no viable nuclear power plants for the home?


A "Mr Fusion" device from the movie Back To The Future.

Whenever you talk about renewable energy, it's impossible to avoid a very particular strain of reply-guy. The "Nuclear is really good actually" dude is convinced that you have critically misunderstood Our-Lord-And-Saviour Uranium. Nukes are clean! They are cheap! They are safe and healthy! They are brilliant! Nuclear power will save us all! Look, I 100% […]

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Electricity That's Too Cheap To Meter


Graph of electricity prices. Some are negative.

Nuclear power was sold to the world as a safe, clean, and economically viable source of electricity. We were told that it would be "too cheap to meter"0. Even the most ardent proponent of nuclear power will have to admit that hasn't come to pass. Construction costs for nuclear power stations are dwarfed only by […]

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Solar Battery Statistics - Day One


A complex graph with multiple overlapping coloured lines.

We recently upgraded our home solar storage to 4.8kWh. The battery has sensors to detect how much solar power we're generating, and how much electricity we're buying from (or selling to) the grid. That means... GRAPHS AND STATISTICS! Our battery was commissioned just after midday. This graph shows: 1630 - it was fully charged. 2000 […]

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Lessons learned from a power-cut


Photo of an MCB - a small electrical switch. It is in the off position.

The first indication I had that anything was wrong at home was my solar panels's cloud service casually emailing me to say they hadn't generated any electricity that day. We were on holiday - literally on the other side of the planet - and there were reports of snow at home, so I didn't think […]

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Experiments with domestic load shedding in the UK


Screenshot of an email. It says "Hi Terence, You'll earn 1800 OctoPoints – that's £2.25 worth – for every unit of electricity you cut down between 5:00 PM and 6:00 PM on 15th November. Opt in now to save power and earn rewards in this Session. You'll go into a draw to win an extra 400,000 OctoPoints – that's £500 worth! – just for opting in. Important: you need to opt in before the Session starts if you want to earn rewards."

Electricity demand varies throughout the day. When demand is higher, electricity prices go up. Most UK consumers are insulated from this variability - we pay a fixed price per kWh no matter what the actual wholesale cost. But it doesn't need to be this way. Exposing users to the immense variability in pricing is probably […]

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No, you can't save £30 per year by switching off your "standby" devices


Chart from the report showing various bits of IT equipment and their power use.

Every few years, a dodgy stat does the rounds claiming you can save £££ if you switch off all your gadgets at the wall. The standby mode of your TV is bleeding you dry!!! Energy Saving Trust@EnergySvgTrustA quick way to #saveenergy at home is to turn off tablets, laptops and consoles as soon as you […]

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Gadget Review: SMT1500i UPS + Linux Instructions


Back of UPS with lots of ports.

I never get power cuts. But, we've had two in the last week. They've both been fixed quickly, but it takes an age for my cable modem to reboot - and then an age for my smarthome to reconnect to the WiFi. So it was time to invest in an Uninterruptible Power Supply (UPS). My […]

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1 year of @edent_solar. We are 100% offset!


A generation meter showing 4,165kWh.

Our domestic solar panels have generated more electricity in a year than we have consumed. We installed 5kW of solar panels on our roof in 2020. Half are East-facing, half West-facing. Over a full year, they've generated 4,165kWh. By comparison, the average UK household uses about 3,800kWh of electricity per year. But working out exactly […]

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Review: Moixa Solar Battery


A big white battery on a wall.

A few years ago, I took part in a local trial to install a solar battery in our home. The battery was excellent - and made a reasonable difference for our energy use. Sadly, last year, it died. It was prototype hardware, and these things happen. Moixa offered to replace it with an updated model […]

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