Always a wealth of information!

Alarming to see a step backwards in Spain, of all countries.

that's less than 1 euro per Watt - not a bad price

Yes indeed. I haven't set those smart controls up in our Home Assistant management system yet. When I have, we will change to a dynamic energy contract.

Lijkt me eerder een
- grondopslag (je moet er iets mee doen hé 😜),
- visuele buffer tussen industrie en Nationaal Park,
- toeristische attractie,

met ook een energieopslag toepassing.

Voor mij niet gelaten. Hangt er van af wie er voor de kost opdraait.

Press release @windeurope.bsky.social here: windeurope.org/news/windeur...

It's a 1950 3 facade single family house, that we gave a deep energy renovation. So, roof, walls and floor all insulated up to standards, windows replaced.

Data for week of 5-9 January 2026 with freezing temps just South of Brussels and snow on the ground (and solar panels).
- @vaillantuk.bsky.social Arotherm+ air-to-water heat pump, mostly floor heating, bedrooms ventilos
- CO2 data from @electricitymaps.com
- Compiled in @home-assistant.io

5/5

In all hours heat pump delivers CO2 savings. At end of the week wind picked up with storm Goretti passing - and temps also increased.

We have green power supply at home, but for this exercise I used general Belgian mix data. It's the hourly matching part of this exercise I find interesting.

4/n

Last week had "record daily gas generation" in Belgium, due to low renewable generation in most of the week, and only the last 2 remaining hashtag#nuclear reactors online. Begging the question if an electric heat pump still reduces CO2.

www.vrt.be/vrtnws/nl/20...
3/n

I matched hourly heating and domestic hot water production and corresponding electricity use, with hourly CO2 emission intensity from the Belgian grid. Then compared that to hourly CO2 emissions if the same heating energy would have been generated with a fossil gas condensing boiler.

2/n