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Comment by anttisalmela | Hacker News Reader

Last year, 2000 MW of wind power was built, at the end of the year total power was 5200 MW. Olkiluoto 3 nuclear reactor was brought online, 1600MW. Solar power nearly doubled, from 358 MW to 606 MW. So far this year 500MW of wind power and 100MW of solar has been added to the grid.

Queries for grid connections pass already 100GW. Over twenty electrolysis plants are in planning.

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Any large battery installations you're aware of?

No large batteries (100MW+), but they are maxing out exporting power to Estonia constantly after that recent nuclear generator came online (which is leading to Estonia having a very clean carbon profile at the moment). Both countries recently signed a MOU to build an additional 1GW underwater HVDC interconnector ("EstLink3"), but it won't be done for a decade.

"Too much clean energy" is a good problem to have! Probably means Finland can pull forward retiring the 2.6GW of coal generation capacity they have (which has been running somewhat consistently at <100MW with the latest nuclear generation addition).

https://www.energy-storage.news/worlds-first-large-scale-san...

https://elering.ee/en/elering-and-fingrid-launch-joint-activ...

https://en.wikipedia.org/wiki/Estlink

https://app.electricitymaps.com/zone/FI

https://app.electricitymaps.com/zone/EE

(EDIT: my note: smaller batteries mentioned in other comments for grid support are helpful for phasing out thermal generation traditionally providing grid support services, like maintaining frequency or voltage, but aren't big enough for material energy arbitrage)

There's a 30 MWh one in Lappeenranta and there's a 36 MWh being built in Lempäälä.

https://www.hs.fi/talous/art-2000009377977.html

OL3 has a big one for grid support purposes: https://www.tvo.fi/en/index/news/pressreleasesstockexchanger...

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