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Nov 7 • 4 tweets • 5 min read
#energymastodon is building! I'm on @janrosenow@mastodon.green

A few people to follow below:

@drvolts: @drvolts@journa.host
@Sustainable2050: @Sustainable2050@mastodon.social
@ChiefExecCCC: @ChrisStark@mastodon.green
@solar_chase: @solar_chase@mastodon.green

more below in 🧵
1/ @taraconnollyGW: @Tara@climatejustice.social
@CoalFreeDave: @coalfreedave@mastodon.green
@AliJSheridan: @AliSheridan@mastodon.ie
@GernotWagner: @gwagner@mastodon.green
@davidrvetter: @davevetter@mastodon.green
@doug_parr: @doug_parr@mastodon.green
2/ @niklashoehne: @niklashoehne@mastodon.social
@VQuaschning: @VQuaschning@mastodon.green
@iain_staffell: @iain_staffell@mastodon.world
@MKreutzfeldt: @mkreutzfeldt@mastodon.social
@GunnarLuderer: @GunnarLuderer@mastodontech.de
@changesanjeev: @changesanjeev@mstdn.social
3/ @TrystanLea: @trystanlea@mastodon.green
@AbigailDombey: @AbigailDombey@mastodon.green
@burger_jaap: @burger_jaap@mastodon.social
@jesseb4me: @jesseb4me@mastodon.green

To be continued.

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More from @janrosenow

Jan Rosenow Profile picture
Nov 8
Energy efficiency is working.

⚡️Electricity consumption of UK households was down by 17% over 2006-2019.

This is despite:

🏠 number of households ⬆️ 10%
💻 number of appliances ⬆️ 40%

🧵 Image
1/ Sources:

UK household electricity consumption: gov.uk/government/sta…

Number of households: ons.gov.uk/peoplepopulati…

Number of appliances:
assets.publishing.service.gov.uk/government/upl…
2/ The EU @Energy4Europe played a key role in socialising the idea of energy labels and standards after introducing the first labels in 1992. This approach was copied all over the world. ec.europa.eu/energy/sites/e… Image
Read 9 tweets
Jan Rosenow Profile picture
Nov 5
Solar and wind have seen huge drops in cost over the last decade according to @IPCC_CH.

Solar ⬇️ 85%
Wind ⬇️ 55%

But skeptics often state that using levelised cost of energy (LCOE) as a metric is meaningless because it ignores cost of integrating solar and wind.

A response. 🧵
1/ Commentators in the mainstream and on social media often still contend that the need for a back-up for wind or solar makes them prohibitively expensive.
2/ Luckily the question of integration costs has been studied in great detail. The @IEA started to provide value‐adjusted LCOE (VALCOE) incorporates information on both costs and the value provided to the power system. IEA data for Europe below.

iea.org/reports/world-…
Read 14 tweets
Jan Rosenow Profile picture
Nov 4
How much will green hydrogen cost in the future?

Producing green hydrogen in the UK is expected to cost 3-11x more than fossil gas at pre-pandemic levels.

Analysis of official UK government data below.

🧵 Image
1/ Predicting future costs of green hydrogen is associated with significant uncertainties. There are multiple sources out there ranging from more pessimistic to more optimistic cost pathways. I used UK government data published last year. gov.uk/government/pub…
2/ Pre-pandemic gas prices at wholesale level have been obtained from Ofgem on a monthly basis. I used the average for March 2015-Feb 2020. Not much variation with an average of around 43p/therm equivalent to 1.5p/kWh. ofgem.gov.uk/energy-data-an… Image
Read 11 tweets
Jan Rosenow Profile picture
Nov 3
It will be much more expensive to operate gas-fired power plants in the long term than to build new solar PV capacity in Europe says new study by @RystadEnergy.

🧵

electrek-co.cdn.ampproject.org/c/s/electrek.c…
1/ Gas prices have risen from an average of €46 per megawatt-hour (MWh) in 2021 to €134 per MWh so far this year. Rystad Energy forecasts that TTF prices will stabilize at around €31 per MWh by 2030.
2/ This puts the levelized cost of electricity (LCOE) of existing gas plants closer to €150 per MWh. That’s still three times more than the LCOE of new solar PV facilities.
Read 7 tweets
Jan Rosenow Profile picture
Nov 2
I see people saying on Twitter that solar & wind are a bad idea because of their environmental impacts.

"Compared to what?" we often ask @RegAssistProj

Recent meta-review led by @BenjaminSovaco1 shows fossil electricity has much bigger environmental impacts than renewables. 🧵
1/ Of course every single electricity production technology has environmental and social impacts. There is no electricity production technology that has zero impacts.
2/ Pointing out that solar panels require energy to be produced, occupy land if not on rooftops and need to be recycled is often used as an argument against the energy transition without doing an objective comparison with fossil fuel-based electricity generation technologies.
Read 7 tweets
Jan Rosenow Profile picture
Oct 29
“hydrogen blend-ready”

How fossil fuel heating industry tries to make consumers believe that buying gas boilers is good for climate.

It is not as currently no hydrogen is blended into the gas grid in the UK. A 20% blend would only cut emissions by 6-7%. 🧵

HT @heatpolicyrich
1/ I love the phrase “when the government begins to add hydrogen to the UK gas grid”.

This is the first time I hear that the government would be the entity owning hydrogen production facilities blending the hydrogen produced into the gas grid. Just magical thinking.
2/ Even if a 20% hydrogen blend was on offer it would only reduce emissions by 6-7% because of the lower calorific value of hydrogen which is about 1/3 compared to fossil gas. iee.fraunhofer.de/content/dam/ie…
Read 12 tweets

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