Jan Rosenow Profile picture
Sep 27 15 tweets 8 min read
Hydrogen for heating is a distraction: inefficient, costly & resource-intensive. This is what ALL independent studies conclude.

My new peer-reviewed @Joule_CP paper reviews 32 independent studies. Not one suggests major role of hydrogen for heating.


1/ I systematically collected all studies on hydrogen for heating published since 2019 “not carried out by or on behalf of a specific industry (e.g. gas, oil, electricity, heat pumps, boilers)”. Result: 32 studies listed in the Supplementary Information. janrosenow.com/uploads/4/7/1/…
2/ The evidence assessment shows that the widespread use of hydrogen for heating is not supported by any of the 32 studies identified in this review. Studies included are by IPCC, IEA, McKinsey, IRENA, UCL, Imperial College, PIK, Energy Transition Commission and many more.
3/ The evidence suggests that, compared to other alternatives such as heat pumps, solar thermal and district heating, hydrogen use for domestic heating is less economic, less efficient, more resource intensive, and associated with larger environmental impacts.
4/ Last week another meta review of hydrogen studies by @FraunhoferISI was published corroborating my findings.

It finds that only 1-2% of buildings energy demand by 2050 will be h2 (including industry-funded studies) but <0.5% in @IPCC_CH scenarios.

5/ There are many high-priority applications where hydrogen is essential. This includes replacing existing hydrogen use with green hydrogen (mainly fertilizer production), industry applications such as steel making, shipping, & long-term energy storage for electricity production.
6/ Appropriate use cases for hydrogen have been identified by others such as @AgoraEW @ETC_energy @IEA @IRENA with the @MLiebreich hydrogen ladder being one of the most intuitive efforts to organise thinking.
7/ Efforts should focus on replacing current carbon intensive grey and black hydrogen first followed by other applications where few alternatives exist next. For heating, we have a multitude of alternatives already available and deployable today.
10/ 'Time to stop the fight' says @rachelparkes_ @rechargenews as 32 independent studies slam the widespread use of hydrogen for heating.

11/ The BBC points out that this study contradicts Rees-Mogg over hydrogen for heating.

12/ Canada’s federal hydrogen strategy includes blending hydrogen into the natural gas grid to heat buildings and homes. This article @NatObserver picks up the study on why heating with h2 is problematic.

13/ @TIME Magazine has now covered this as well. time.com/6217426/is-hyd…

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More from @janrosenow

Sep 14
"Nobody could have foreseen the gas crisis." we sometimes hear.

The reality is that many analysts and organisations have raised the alarm time and time again in the past. We just did not listen.

🧵 inspired by @wolfibey @enpal
1/ @Bruegel_org warned in 2014 that we need to prepare to Russia cutting off gas supplies to Europe. bruegel.org/blog-post/euro…
2/ An academic paper found in 2020 that "gas energy security in the EU-27 has hardly improved" and the "level of gas supply security has worsened". sciencedirect.com/science/articl…
Read 9 tweets
Sep 13
How is 2022 going so far for heat pumps?

Significant growth in the first half points to further market expansion with some countries reporting doubling of market.

High gas prices and people wanting to get off gas lead to huge increase in demand.

1/ The German heat pump market grew by 25% in H2 2022. bdh-industrie.de/presse/pressem…
2/ In Poland heat pump installations for heating buildings are up by 96% in H1 2022.
Read 11 tweets
Aug 30
Marginal pricing in electricity markets has been subject of much debate lately.

How can we shield consumers from surges in energy prices whilst preserving the market’s essential functions?

We @RegAssistProj have a proposal: a price shock absorber. 🧵

1/ The EU is planning an "emergency intervention" in electricity markets to reduce prices. National governments have announced similar initiatives too.

2/ Policy interventions want to correct the effects of marginal pricing which means the clearing price is set by the most expensive generator.

@LionHirth @thehertieschool has an excellent thread on marginal pricing for those unfamiliar with the term.
Read 12 tweets
Aug 28
POLL: How will the energy crisis affect the clean energy transition?
1/ My personal view: The sharp increase in fossil fuel prices makes renewables and energy efficiency multiple times more economical. We already see a massive uptick in demand for clean energy tech.
2/ Here’s solar: UK suppliers of solar panels have reported a fourfold increase in orders this year compared with the year before.

Read 9 tweets
Aug 4
Winter is coming - it is less than 60 days until the next heating season starts.

⚠️Gas prices are ~10x ⬆️ compared to the first half of 2021.

Where is the war-time effort on energy efficiency in Europe? Which countries have announced major ramp up of insulation programmes?

1/ First up: Germany announced a whopping €14 billion per year of public funding for building energy efficiency retrofits.
2/ Italy continues to provide very generous tax rebates up to 110% of investment costs through its superbonus scheme. By April this year the Italian government provided €21bn in subsidies since launching in July 2020. That's ~€12bn/yr. theguardian.com/world/2022/apr…
Read 10 tweets
Jul 26
Electrification is energy efficiency.

If we electrified industry, buildings and transport to the full potential this would reduce final energy demand by 40%.

Data from Prof Nick Eyre @ecioxford @CREDS_UK @oxfordgeography link.springer.com/article/10.100…

@ecioxford @CREDS_UK @oxfordgeography 1/ Currently much of energy services society uses are produced from converting heat to work, mainly by combusting fossil fuels.
2/ The energy transition involves a systemic shift from heat-producing to work-producing energy sources. Even energy services that involve heating will largely be based on work (renewable electricity).
Read 10 tweets

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