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Christian Breyer @christianonre.bsky.social · 15h

Erneuerbare Energien erzeugen im ersten Halbjahr 2025 erstmals mehr Strom als Kohlekraftwerke - www.photon.info/news/erneuer...

Erneuerbare Energien erzeugen im ersten Halbjahr 2025 erstmals mehr Strom als Kohlekraftwerke - Photon

In der ersten Hälfte dieses Jahres haben erneuerbare Energien erstmals die Stromerzeugung aus Kohle übertroffen. Dies ist laut dem Bericht »Global Electricity Mid-Year Insights 2025« des britischen Th...

www.photon.info

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Christian Breyer @christianonre.bsky.social · 15h

IEA lowers 2025-30 forecast for solar growth www.pv-magazine.com/2025/10/07/i... - IEA bets against solar PV, however, all bets of IEA against solar PV in the World Energy Outlook were wrong doi.org/10.1016/j.rs... - why it should be better this time with such a list of past failures?

IEA lowers 2025-30 forecast for solar growth

The International Energy Agency (IEA) cut its 2025–30 renewables forecast by 5%, citing lower solar additions, though PV still represents nearly 80% of 4.6 TW expected growth.

www.pv-magazine.com

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Christian Breyer @christianonre.bsky.social · 15h

Scientists develop new floating box array for offshore PV www.pv-magazine.com/2025/10/07/s...

Scientists develop new floating box array for offshore PV

Researchers have tested a 9 x 11 floating box array for offshore photovoltaics in a large wave flume, under regular and irregular wave sequences. They have placed wireless gyroscopes on three of the b...

www.pv-magazine.com

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Christian Breyer @christianonre.bsky.social · 15h

Costa Rica doubles feed-in rates for new distributed solar producers www.pv-magazine.com/2025/10/07/c... - Costa Rica has an interesting #100RE future ahead, with a quite diverse portfolio including solar PV: doi.org/10.1016/j.re...

Costa Rica doubles feed-in rates for new distributed solar producers

Costa Rica’s state utility has approved an average 111% rate increase for new distributed generators under revised eight-year contracts.

www.pv-magazine.com

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Christian Breyer @christianonre.bsky.social · 15h

California’s Ivanpah CSP closure shows tech shift, not solar decline www.pv-magazine.com/2025/10/07/c...

California’s Ivanpah CSP closure shows tech shift, not solar decline

The shutdown of California’s $2.2 billion Ivanpah concentrated solar power (CSP) plant highlights the rapid rise of cheaper, more efficient photovoltaic technology rather than a failure of solar energ...

www.pv-magazine.com

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Christian Breyer @christianonre.bsky.social · 18h

Podcast on Solar Photovoltaics in 100% Renewable Energy Systems youtu.be/s4u5ZcvSTsg for this encyclopedia chapter from 2021 link.springer.com/content/pdf/...
@lut.fi @dominikkeiner.bsky.social @siavashkhalili.bsky.social

Solar Photovoltaics in 100% Renewable Energy Systems

YouTube video by Christian Breyer

youtu.be

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Christian Breyer @christianonre.bsky.social · 18h

Electric cars fare worse in Finnish car inspections – up to half of Tesla's flunk - yle.fi/a/74-20186654 - considerable quality issues of Tesla detected, other EV manufacturers perform well

Electric cars fare worse in Finnish car inspections – up to half of Teslas flunk

EVs are gaining popularity in Finland – but perform significantly worse in inspections than petrol, diesel or hybrid cars of the same age. Teslas have by far the highest test failure rate.

yle.fi

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Christian Breyer @christianonre.bsky.social · 18h

US government cancels $7.6 billion of energy awards in Democrat-led states www.pv-magazine.com/2025/10/06/u...

US government cancels $7.6 billion of energy awards in Democrat-led states

The US Department of Energy canceled $7.56 billion in financial awards for 223 energy projects across 16 historically Democrat-led states, citing inadequate documentation and failing economic and secu...

www.pv-magazine.com

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Christian Breyer @christianonre.bsky.social · 18h

Chile’s energy storage capacity reaches 4.6 GWh www.pv-magazine.com/2025/10/06/c... - great to see renewable power capacities & storage expanding in #Chile - and much more to come: www.sciencedirect.com/science/arti...

Chile’s energy storage capacity reaches 4.6 GWh

According to data from the Chilean Association of Renewable Energy and Storage (ACERA), the share of non-conventional renewable energy in Chile’s electricity grid rose to 39.5% of total generation in ...

www.pv-magazine.com

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Christian Breyer @christianonre.bsky.social · 18h

Spain's solar capacity to hit 152.8 GW by 2035, says GlobalData www.pv-magazine.com/2025/10/06/s...

Spain’s solar capacity to hit 152.8 GW by 2035, says GlobalData

GlobalData projects Spain’s renewables to reach 218.1 GW by 2035, while solar will drive growth with 152.8 GW of capacity.

www.pv-magazine.com

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Christian Breyer @christianonre.bsky.social · 21h

no. we need net-negative energy-industry systems, however, in a future paper we want to pencil out more what could be done with this electricity for free. Also quite many countries do not have a fossil gas infrastructure today, why to build something with import terminals, etc.?

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Christian Breyer @christianonre.bsky.social · 1d

@holzheustefan.bsky.social @jeroahola.bsky.social
@wpschill.bsky.social @jmkorhonen.fi @profstrachan.bsky.social @drpauldorfman.bsky.social @nduic.bsky.social @sven-giegold.de

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Christian Breyer @christianonre.bsky.social · 1d

12/ @hasanhasibul.bsky.social @dominikkeiner.bsky.social l @mzjacobson.bsky.social @nworbmot.bsky.social @oliverruhnau.bsky.social @aukehoekstra.bsky.social @solarpapst.bsky.social @brianvad.bsky.social @paoyuoei.bsky.social @ckemfert.bsky.social @matthiasdeutsch.bsky.social

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Christian Breyer @christianonre.bsky.social · 1d

11/ Listen to the Inter-annual Storage and Balancing for 100% Renewables - A Global Analysis paper in the podcast on our research results: youtu.be/pAWjWeLqt-A – this is AI-generated using Google NotebookLM.

Inter-annual Storage and Balancing for 100% Renewables - A Global Analysis

YouTube video by Christian Breyer

youtu.be

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Christian Breyer @christianonre.bsky.social · 1d

10/ Conclusion: The findings demonstrate that strategic overcapacity is the most cost-effective tool for ensuring long-term energy system resilience. Curtailment should be understood not as a flaw, but as a rational component of a least-cost #100RE system.

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Christian Breyer @christianonre.bsky.social · 1d

9/ The global cost implications are profound. A storage-heavy, curtailment-optimised approach increases system costs by an average of 103.1%. In stark contrast, an overcapacity-focused, cost-optimised approach increases costs by only 3.3%.

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Christian Breyer @christianonre.bsky.social · 1d

8/ The economic rationale is striking. For the four case regions, the total annualised cost markup relative to the baseline system cost plummets as overcapacity increases. The lowest cost is achieved by relying on overcapacity alone, without extra inter-annual storage.

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Christian Breyer @christianonre.bsky.social · 1d

7/ Two key scenarios highlight different overcapacity needs. A curtailment-optimised system requires a global average of 1.4% overcapacity, whereas a cost-optimised system relies on a higher average of 5.0% to achieve economic efficiency.

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Christian Breyer @christianonre.bsky.social · 1d

6/ When prioritising minimal energy curtailment, vast storage capacities are required globally. Hydrogen for re-electrification dominates with a need for 27,674 TWh, far exceeding hydrogen for direct use (404 TWh), methane (55 TWh), and liquid fuels (275 TWh).

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Christian Breyer @christianonre.bsky.social · 1d

5/ A clear trade-off between storage and overcapacity is revealed. For four archetype regions (wind, solar, hydropower, and technology-mix dominant), the required storage factor, a multiplier for storage capacity, decreases sharply as generation overcapacity increases.

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Christian Breyer @christianonre.bsky.social · 1d

4/ A novel modelling framework was developed to manage IAV. The procedure calculates the minimum viable storage factor (SF) and generation overcapacity needed to ensure supply security for electricity, hydrogen, methane, liquid fuels across a multi-decade weather period.

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Christian Breyer @christianonre.bsky.social · 1d

3/ This research expands an earlier study for managing wind-related IAV on the case of the UK & Ireland doi.org/10.1016/j.en.... A core limitation was not to consider the complementarity of solar & wind energy. This gap is filled in this study for 145 regions globally.

Redirecting

doi.org

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Christian Breyer @christianonre.bsky.social · 1d

2/ To achieve #100RE systems, not just daily or seasonal, but also inter-annual variability (IAV) of solar PV and wind power generation must be managed. This study quantifies the requirements to ensure system resilience across decades.

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Christian Breyer @christianonre.bsky.social · 1d

1/ New research @lut.fi presents the first global analysis of inter-annual storage for #100RE systems in 145 regions doi.org/10.1016/j.ap.... Strategic generation overcapacity is a significantly more cost-effective solution than building massive storage.

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Christian Breyer @christianonre.bsky.social · 1d

Podcast on Saudi Arabia's Desert Opportunity - How Renewables Power the Future youtu.be/PI521TKriuw for this paper from 2018 doi.org/10.3390/w100...
@lut.fi

Saudi Arabia's Desert Opportunity - How Renewables Power the Future

YouTube video by Christian Breyer

youtu.be

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