Lewis Bowick
l-bow.bsky.social
Lewis Bowick
@l-bow.bsky.social
Engineering and economics of the energy transition. Electrification of heat, renewables, energy networks and various other pieces of the jigsaw.
and no, there's absolutely nothing you can do about it. My travel insurance should cover mountain rescue but maybe not Googling their phone number
May 10, 2025 at 4:59 PM
I pay £7/mo for 12GB mobile data. Graciously my provider let me use that data for no extra charge in Spain and France. Dipped into the Spanish speaking principality of Andorra for some hiking and all of a sudden they're charging me £9830 per GB!!!
May 10, 2025 at 4:54 PM
Always a tragic pairing to see. #HVAC #IYKYK
May 8, 2025 at 3:19 PM
Looks like we would be breaking even on DHW versus gas on a standard tariff. On Agile we'll be saving a fair bit
April 27, 2025 at 10:00 PM
Never have I seen a duck curve actually look like a duck quite so much as today
April 7, 2025 at 8:43 PM
Although a lot of the existing fleet is about to start aging out. And we'll need to increase capacity to support electrification. So looks like we'll need to build lots of hydrogen or CCS capacity to run low load factors. Very different circumstances to those the CCGT fleet was built under!
March 26, 2025 at 9:11 PM
Addendum: the breakeven HP SPF against gas of course depends on tariffs and boiler efficiency as well. The above chart was based on 85% boiler efficiency and January price cap tariffs. Here are some alternatives
March 2, 2025 at 2:47 PM
If there was no increase in heat demand (you already heat your home continuously with gas), a heat pump SPF of 3.3 would break even with gas running costs. On the other hand, if the move to continuous heating increased your heat use by 20%, you’d need an SPF of 4 to break even. (assumptions at end)
March 2, 2025 at 2:46 PM
The most cost-effective thing landlords of homes with electric heating could do to boost efficiency is surely installing air-to-air heat pumps. With SCOPs around 4, they could reduce heating bills 75%. Try getting anywhere near that with a few £k of insulation! But EPCs assume they run at SCOP 1.7!!
February 28, 2025 at 10:32 AM
And this is the really tricky bit. I'd be interested to know if anyone has insight on how many homes they expect the grant to scale to before gov will want to reign it in
February 1, 2025 at 1:48 PM
If it's due to rising gas prices, maybe the fixed rate will step up at the next price cap? Agile will always take the gains and losses of changing gas prices before the fixed tariffs.
January 18, 2025 at 12:33 PM
"Other" has been way too critical during our times of need lately for it to continue to remain anonymous
January 15, 2025 at 9:38 PM
I see stuff like this all the time; it's really common. "Our house is freezing, we keep the heating totally shut down most of the day and we're all out of ideas. Must be something wrong with the building fabric." It's going to take some effort to unlearn this national habit!
January 12, 2025 at 5:23 PM
Are you sure? My understanding is that we do pay windfarms to curtail, so that investors don't have to worry about the grid being unable to accept some generation
December 7, 2024 at 4:08 PM
To explain what I mean: only about 30% of our electricity bill is for energy consumed. The rest is costs which don't scale (linearly or at all) with energy consumption, but are still charged according to consumption
December 2, 2024 at 4:23 PM
In my case I wasn't supposed to get rid of my non-condensing boiler or install solar before spending £20k on solid wall and floor insulation!
November 16, 2024 at 1:06 PM
EPCs do actually have an A to G carbon rating output (the "environmental impact rating"). It used to get a colorful chart like the running cost one but bizarrely got demoted recently. We just need to stop treating the running cost as the only output
November 15, 2024 at 2:55 PM