
Ex-Soil Scientist ex-agroforester ex-builder now mostly lecturing #sustainability, #energy #construction while consulting #retrofits
Wallingford
Joined January 2012
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Tim Fenn retweeted
"I am really disappointed that since then we haven't actually made any progress"
@Dhara__Vyas, CEO of @EnergyUKcomms, joined us on the latest episode of High Resolution to discuss the need to accurately target government support with the cost of energy.
Listen in full here ⤵️ buff.ly/UJHHTFi
Tim Fenn retweeted
Here's some facts for you?
heatpumpmonitor.org
teapaw.org/policyseed/status/2107…
Tim Fenn retweeted
FINDING THE MONEY explores Modern Monetary Theory (MMT), challenging conventional ideas about money, government spending, debt, and deficits.
Watch it free now on the Giant Pictures YouTube channel:
youtube.com/watch?v=x3TJFoQW…
Tim Fenn retweeted
Africa’s first 24/7 ‘solar baseload’ power plant, enabled by batteries, goes online at DRC copper mine - energy-storage.news/africas-…
Tim Fenn retweeted
Replying to @DaleVince
And we build them in the UK. teapaw.org/policyseed/status/2097…
Tim Fenn retweeted
Here we go again, our second energy crisis in five years, the last one cost us £70 Billion in payments to mitigate the harm of sky high bills, what will this one cost? TBC. This is a fossil fuel crisis and we suffer more than we should because we allow the price of fossil gas to set the price of our wind and sun. When will we fix this? And the other dysfunctions at the heart of our energy market - it’s rigged in the favour of big companies against the interest of the country - we need the courage to change that. To challenge the orthodoxy of ‘markets’. We need an energy market that works for Britain. More info in this short paper.
dalevince.com/reports/wholes…
It amazes me that @EnvAgency claim they haven’t got the resources to prosecute #flytippers but apparently have people free to monitor & control volunteers wanting to do cleanups. Looks like very poor leadership. What policy are they following?
Would you leave the banks of one of the ancient rivers of London looking like a rubbish dump?
@EnvAgency would.
When they sent investigation teams down to the Aldersbrook earlier this year to threaten local volunteers with two years in jail for restoring the river without permission, they didn’t even bother to look at the the piles of junk and hazardous materials (including oil and fuel) on the abandoned allotment plots next to the river. Even worse, when I asked them to remove the rubbish and restore the brook themselves (given local volunteers aren’t allowed to do it) they refused. So their plan is, apparently, to leave the river to die and to prosecute anyone who dares to try & restore the river.
However, local river guardians are not waiting for permission to do what the authorities have failed to do. In the absence of the EA, the local authority or the landowner doing anything about the waste on the banks of the Aldersbrook, we’re going to start cleaning it, ready for the full restoration of this section of the brook later in the winter.
Denmark is once again showing how much flexible demand we have on our electricity grid.
EVs, heatpumps/cooling, district heating etc..
When electricity prices dropped deep into negative at noon our electricity demand went from 4350 MW to 5100 MW an 750 MW increase. We need more of this 💪
There was even a big increase in power demand as prices went to zero both at 08:00 and 18:00 when the demand was at just 2700 MW quickly raising to 4200 MW as prices became zero. ⚡️🔌
Tim Fenn retweeted
Proximity to nuclear power plants was associated with elevated mortality from breast, colon, and lung cancers. From 2000 to 2020, an estimated 39,767 female deaths (95% CI: 9312–69,381), representing 2.01% (95% CI: 0.47–3.50%), and 38,124 male deaths (95% CI: 16,106–59,600), representing 2.33% (95% CI: 0.98–3.64%), were attributable to this proximity. Lung cancer accounted for the largest burden in both sexes, followed by breast and colon cancer in females and colon cancer in males. Mortality risks declined with increasing distance, becoming negligible beyond 50 km.
Nature 20th May 2026
nature.com/articles/s41370-0…
Tim Fenn retweeted
So what happens when Reform take over your local council?
This.
#KentCountyCouncil
Tim Fenn retweeted
This roadside verge reveals:
A total absence of personal responsibility
A rejection of the notion of community pride
A failure of legal enforcement against criminals
A complete embarrassment for Britain
It cannot go on. @benonwine
Replying to @cyphernaut00 @ShangguanJiewen
No greenery? Horrific? Compared to what?
Tim Fenn retweeted
Renewables are now 53% cheaper than nuclear for total system cost - not just generation cost. That includes all the costs of ‘firming’ renewables and ensuring a stable power supply. Offshore wind and solar achieves significantly lower generation costs in a coupled energy system than nuclear. And the stunning growth of battery storage puts it at centre of global energy security.
At a time when so much looks grim, the renewable evolution holds out real hope. In 2025, more power was generated worldwide from renewable energy than from coal, and 91% of new renewables are now cheaper than fossil fuels. Renewables made up 85.6% of last year’s new global power capacity additions. Each year nuclear adds only as much net global power capacity as renewables add every two days.
Tim Fenn retweeted
The part that nobody talks about when it comes to 20mph speed limits!
This was really informative, especially the part about reduced insurance costs, was not aware of that!
Amazing video @WillHayCardiff - really clear, evidence based facts.
Tim Fenn retweeted
Solar isn't just growing. The scale of its 2025 surge is completely bonkers
>We added enough new solar last year to displace every single unit of gas power generated by 100% of LNG exports through the Strait of Hormuz
>So just 1 year of solar growth wiped out the energy equivalent of the world's most critical fossil fuel chokepoint
>Solar growth was 18x gas growth
>China alone added more solar in 1 year than the entire world in 2023
This isn't a transition. It's a hostile takeover by superior economics. Betting on fossil fuels today is exactly like betting on whale oil while Edison was turning on the lightbulb
Tim Fenn retweeted
44% of evening peak met by batteries. In California, world’s 4th largest economy. Not some tiny pilot project or a niche experiment, a global industrial powerhouse
If you’re still sitting in boardrooms or parliament banging on about baseload and the intermittency of renewables, you’re not just wrong, you’re a dinosaur
California's 44% isn't an anomaly. It's a preview of the 2027-2030 reality for every major grid overbuilding renewables
The "technical barriers" the fossil fuel lobby loves to cry about are gone. We are shifting solar and wind into the night at a massive, industrial scale. We don't need expensive, inflexible coal or gas to keep the lights on; we need more storage and we need it now - everywhere
reneweconomy.com.au/grid-bat…































