Si Cy
@sicy.bsky.social
In aviation but incurably curious about renewable energy & clean tech. Blame the Physics degree
Reposted by Si Cy
Does he even own a suit?
November 19, 2025 at 12:03 AM
Does he even own a suit?
Reposted by Si Cy
I mean, if you have a medical emergency in the next month or so, you have a good change of an ambulance arriving in a reasonable time.
This has just not been the case in most of the UK for several winters now, and will make an enormous difference to a lot of people.
This has just not been the case in most of the UK for several winters now, and will make an enormous difference to a lot of people.
November 18, 2025 at 3:18 PM
I mean, if you have a medical emergency in the next month or so, you have a good change of an ambulance arriving in a reasonable time.
This has just not been the case in most of the UK for several winters now, and will make an enormous difference to a lot of people.
This has just not been the case in most of the UK for several winters now, and will make an enormous difference to a lot of people.
Reposted by Si Cy
10 years ago hydrogen buses were hyped and many cities ordered them.
Today the picture is clear: electric buses rule, hydrogen buses whither.
Today the picture is clear: electric buses rule, hydrogen buses whither.
November 18, 2025 at 7:39 PM
10 years ago hydrogen buses were hyped and many cities ordered them.
Today the picture is clear: electric buses rule, hydrogen buses whither.
Today the picture is clear: electric buses rule, hydrogen buses whither.
Reposted by Si Cy
Europe's electricity system is changing rapidly and often in places that don't make the headlines.
Look at Estonia - not that long ago and fossil fuels dominated around 90% of electricity generation.
Today solar and wind eat more and more into the share of fossil fuel-generated electricity.
Look at Estonia - not that long ago and fossil fuels dominated around 90% of electricity generation.
Today solar and wind eat more and more into the share of fossil fuel-generated electricity.
November 18, 2025 at 2:32 PM
Europe's electricity system is changing rapidly and often in places that don't make the headlines.
Look at Estonia - not that long ago and fossil fuels dominated around 90% of electricity generation.
Today solar and wind eat more and more into the share of fossil fuel-generated electricity.
Look at Estonia - not that long ago and fossil fuels dominated around 90% of electricity generation.
Today solar and wind eat more and more into the share of fossil fuel-generated electricity.
Reposted by Si Cy
Love this. Magnificent!
Astrophotographer snaps 'absolutely preposterous' photo of skydiver 'falling' past the sun's surface
Astrophotographer Andrew McCarthy has snapped a striking shot of a skydiving YouTuber perfectly aligned with the fiery surface of the sun. The unlikely image, dubbed "The Fall of Icarus," required met...
www.livescience.com
November 16, 2025 at 3:07 PM
Love this. Magnificent!
Spot the solar output from yesterday! 🔬 😂
0.24kWh. My max in summer is 70kWh. This is why I bristle slightly when I hear people say PV still works when it’s cloudy. Well it’s not zero, but it’s not very useful either.
Still, the battery saw us through pretty well
0.24kWh. My max in summer is 70kWh. This is why I bristle slightly when I hear people say PV still works when it’s cloudy. Well it’s not zero, but it’s not very useful either.
Still, the battery saw us through pretty well
November 15, 2025 at 9:22 PM
Spot the solar output from yesterday! 🔬 😂
0.24kWh. My max in summer is 70kWh. This is why I bristle slightly when I hear people say PV still works when it’s cloudy. Well it’s not zero, but it’s not very useful either.
Still, the battery saw us through pretty well
0.24kWh. My max in summer is 70kWh. This is why I bristle slightly when I hear people say PV still works when it’s cloudy. Well it’s not zero, but it’s not very useful either.
Still, the battery saw us through pretty well
Reposted by Si Cy
The BBC will never always get it right, but it has a public remit to try. And that makes all the difference
November 14, 2025 at 9:20 AM
The BBC will never always get it right, but it has a public remit to try. And that makes all the difference
Promising.
It’d be really nice if @orbitalmarine.bsky.social posted on here. Same for so many other interesting marine energy pioneers, they’re not on here but LinkedIn & (still!) X
www.linkedin.com/posts/offsho...
It’d be really nice if @orbitalmarine.bsky.social posted on here. Same for so many other interesting marine energy pioneers, they’re not on here but LinkedIn & (still!) X
www.linkedin.com/posts/offsho...
#renewableenergy #tidalenergy #marineenergy #renewables | Offshore Energy - Marine Energy
Eauclaire Tidal and Scottish #renewableenergy company Orbital Marine Power Ltd have received 12.5MW of new #tidalenergy licences from the Province of Nova Scotia under the 2025 tidal energy procuremen...
www.linkedin.com
November 13, 2025 at 7:55 AM
Promising.
It’d be really nice if @orbitalmarine.bsky.social posted on here. Same for so many other interesting marine energy pioneers, they’re not on here but LinkedIn & (still!) X
www.linkedin.com/posts/offsho...
It’d be really nice if @orbitalmarine.bsky.social posted on here. Same for so many other interesting marine energy pioneers, they’re not on here but LinkedIn & (still!) X
www.linkedin.com/posts/offsho...
Reposted by Si Cy
This is such a lovely tribute to Quentin Willson. Real measure of the man stuff. The air is cleaner, emissions are lower, and the journey towards a cleaner and healthier world is more advanced than it would have been because of the work he put in.
November 10, 2025 at 6:50 PM
This is such a lovely tribute to Quentin Willson. Real measure of the man stuff. The air is cleaner, emissions are lower, and the journey towards a cleaner and healthier world is more advanced than it would have been because of the work he put in.
Reposted by Si Cy
Quick thread on the BBC and the political and societal significance of recent developments:
One of the main reasons the UK has historically been so much less polarised than the US, is that Britain has a shared source of information, consumed and trusted by most people regardless of their politics.
One of the main reasons the UK has historically been so much less polarised than the US, is that Britain has a shared source of information, consumed and trusted by most people regardless of their politics.
November 10, 2025 at 1:43 PM
Quick thread on the BBC and the political and societal significance of recent developments:
One of the main reasons the UK has historically been so much less polarised than the US, is that Britain has a shared source of information, consumed and trusted by most people regardless of their politics.
One of the main reasons the UK has historically been so much less polarised than the US, is that Britain has a shared source of information, consumed and trusted by most people regardless of their politics.
A real loss. His credibility with the motor industry was hugely beneficial to the transition. Irreplaceable.
Rest in peace Quentin.
Rest in peace Quentin.
He was a passionate voice for motoring and consumer rights. Quentin dedicated his life to sharing his love for cars and helping people understand them, from classic combustion to modern electric. His kindness, intelligence, wit, and warmth will always be missed. Rest in peace, Q we love you.
November 9, 2025 at 5:38 PM
A real loss. His credibility with the motor industry was hugely beneficial to the transition. Irreplaceable.
Rest in peace Quentin.
Rest in peace Quentin.
Reposted by Si Cy
On my dog walk I often chat with right wingers. I pretend I am an ex-Reform voter put off by the utter fuck up of our county council. Then they see me as one of their own, don't get defensive and shouty, and start to question their own opinion of Reform. Honey, not vinegar.
November 6, 2025 at 12:20 PM
On my dog walk I often chat with right wingers. I pretend I am an ex-Reform voter put off by the utter fuck up of our county council. Then they see me as one of their own, don't get defensive and shouty, and start to question their own opinion of Reform. Honey, not vinegar.
Reposted by Si Cy
Your daily dose of climate hope. From the team at RMI: rmi.org/wp-content/u...
November 3, 2025 at 11:36 PM
Your daily dose of climate hope. From the team at RMI: rmi.org/wp-content/u...
Reposted by Si Cy
Europe’s gas prices are still far above the U.S.
Sept 2025: $11.1 vs $3.0 per MMBtu — nearly 4× higher.
Even before the crisis, Europe paid more.
The only lasting fix? Less gas, more renewable energy, more efficiency and more clean electrification. ⚡️
Sept 2025: $11.1 vs $3.0 per MMBtu — nearly 4× higher.
Even before the crisis, Europe paid more.
The only lasting fix? Less gas, more renewable energy, more efficiency and more clean electrification. ⚡️
November 2, 2025 at 3:33 PM
Europe’s gas prices are still far above the U.S.
Sept 2025: $11.1 vs $3.0 per MMBtu — nearly 4× higher.
Even before the crisis, Europe paid more.
The only lasting fix? Less gas, more renewable energy, more efficiency and more clean electrification. ⚡️
Sept 2025: $11.1 vs $3.0 per MMBtu — nearly 4× higher.
Even before the crisis, Europe paid more.
The only lasting fix? Less gas, more renewable energy, more efficiency and more clean electrification. ⚡️
Oh balls. @gravitricity.com have gone under as well!
The list of failed renewable energy/clean tech startups that I’ve invested in is growing. ☹️
The list of failed renewable energy/clean tech startups that I’ve invested in is growing. ☹️
November 1, 2025 at 9:53 AM
Oh balls. @gravitricity.com have gone under as well!
The list of failed renewable energy/clean tech startups that I’ve invested in is growing. ☹️
The list of failed renewable energy/clean tech startups that I’ve invested in is growing. ☹️
Reposted by Si Cy
Great read from @iandunt.bsky.social on whether Starmer should stay or go, including the mystery of how, if you’re launching a popular climate, energy, and growth strategy, why wouldn’t you stage a press conference on it?
iandunt.substack.com/p/a-world-wi...
iandunt.substack.com/p/a-world-wi...
October 31, 2025 at 1:14 PM
Great read from @iandunt.bsky.social on whether Starmer should stay or go, including the mystery of how, if you’re launching a popular climate, energy, and growth strategy, why wouldn’t you stage a press conference on it?
iandunt.substack.com/p/a-world-wi...
iandunt.substack.com/p/a-world-wi...
Trying to re-find a post about a full size electric tractor i saw on LinkedIn I think it was. Despairing, I turn to google: majority of results are for children’s toys 🤣
October 27, 2025 at 4:43 PM
Trying to re-find a post about a full size electric tractor i saw on LinkedIn I think it was. Despairing, I turn to google: majority of results are for children’s toys 🤣
Reposted by Si Cy
Braverman deleted this tweet which made me wonder who that previous prisoner was. His name was Junead Ahmed. He was a conman mistakenly released in 2023. She was Home Secretary at the time. Oh.
news.sky.com/story/migran...
news.sky.com/story/migran...
October 26, 2025 at 9:46 PM
Braverman deleted this tweet which made me wonder who that previous prisoner was. His name was Junead Ahmed. He was a conman mistakenly released in 2023. She was Home Secretary at the time. Oh.
news.sky.com/story/migran...
news.sky.com/story/migran...
Reposted by Si Cy
One of the key barriers to electrification is the ratio of electricity to gas prices.
The tax rate on electricity used in industry is much higher in most European countries than the tax rate on fossil gas.
There are many options for reform: www.sciencedirect.com/science/arti...
@ember-energy.org
The tax rate on electricity used in industry is much higher in most European countries than the tax rate on fossil gas.
There are many options for reform: www.sciencedirect.com/science/arti...
@ember-energy.org
October 27, 2025 at 8:10 AM
One of the key barriers to electrification is the ratio of electricity to gas prices.
The tax rate on electricity used in industry is much higher in most European countries than the tax rate on fossil gas.
There are many options for reform: www.sciencedirect.com/science/arti...
@ember-energy.org
The tax rate on electricity used in industry is much higher in most European countries than the tax rate on fossil gas.
There are many options for reform: www.sciencedirect.com/science/arti...
@ember-energy.org
Reposted by Si Cy
What it'd cost for Europe to be self-sufficient in solar panels: +~20% to the cost of panels if produced from Chinese cells; +50% for European cells, +75% for European ingots and wafers. BUT even the last option is just +15-20% to the cost of utility-scale & +5% for residential.
October 27, 2025 at 7:49 AM
What it'd cost for Europe to be self-sufficient in solar panels: +~20% to the cost of panels if produced from Chinese cells; +50% for European cells, +75% for European ingots and wafers. BUT even the last option is just +15-20% to the cost of utility-scale & +5% for residential.
3hrs free electricity. The car is charging, the battery is charging, the heat pump is doing the hot water and everything is on!
How much can we get through?! 😂
How much can we get through?! 😂
October 25, 2025 at 11:26 AM
3hrs free electricity. The car is charging, the battery is charging, the heat pump is doing the hot water and everything is on!
How much can we get through?! 😂
How much can we get through?! 😂
Reposted by Si Cy
If there is a parked car on the pavement I will literally walk over it if I can get up the bumper and onto the bonnet or boot, rather than go around it. If I leave a footprint or a dent, even better. It's a footpath, dickheads, park your car properly and not in my right of way.
October 22, 2025 at 5:20 PM
If there is a parked car on the pavement I will literally walk over it if I can get up the bumper and onto the bonnet or boot, rather than go around it. If I leave a footprint or a dent, even better. It's a footpath, dickheads, park your car properly and not in my right of way.
Reposted by Si Cy
All this, plus rolling climate crisis.
I really think people are underestimating the degree to which 21st century politics are going to be apocalyptically bad; we are collectively sliding towards mass ethnic cleansing being the norm in the Western World, out of no reason but pure fucking spite and empty nostalgia.
Tory policy is to revoke permanent residence (ILR) for everybody who does not earn £38k - deporting most nurses who have ILR
This is put in the video as "who is unlikely to contribute more than they cost"
NB: video does not say EU settled status is exempt
No govt since Idi Amin has done this
This is put in the video as "who is unlikely to contribute more than they cost"
NB: video does not say EU settled status is exempt
No govt since Idi Amin has done this
October 22, 2025 at 6:07 AM
All this, plus rolling climate crisis.
Reposted by Si Cy
Is 2026 the coming-of-age of the industrial heat pump?
I really liked this technology tracker...
heatpumpingtechnologies.org/project58/fi...
I really liked this technology tracker...
heatpumpingtechnologies.org/project58/fi...
October 21, 2025 at 5:37 AM
Is 2026 the coming-of-age of the industrial heat pump?
I really liked this technology tracker...
heatpumpingtechnologies.org/project58/fi...
I really liked this technology tracker...
heatpumpingtechnologies.org/project58/fi...
Reposted by Si Cy
The result? Average heat pump prices around £3k — and sometimes even free after the BUS grant. And because all homeowners are different they can instantly, dynamically change their design right there an then as soon as the home is scanned!
AI Heat Pump Installs For Just £1!? (Seriously)
YouTube video by Heat Geek
youtu.be
October 3, 2025 at 3:33 PM
The result? Average heat pump prices around £3k — and sometimes even free after the BUS grant. And because all homeowners are different they can instantly, dynamically change their design right there an then as soon as the home is scanned!