Finland energy profile
Finland — no fossil fuels of its own, one of the world's cleanest grids
~95%
Fossil-free electricity (2024)
2035
Legally binding carbon-neutrality target
~37-42%
Electricity from nuclear (varies by year)
116+ TWh
Annual bioenergy use — world-leading per capita
Eighteen years in the making
Olkiluoto 3 and the world's first permanent nuclear waste site
A famously delayed reactor, finally delivering:
Construction on Olkiluoto 3 began in 2005 as Europe's first new nuclear build in over a decade — and became notorious for delays and cost overruns, taking until March 2022 to reach regular production and April 2023 to begin full commercial operation, roughly 18 years after ground was broken. Once running, it added 1,600 MW of firm, low-carbon capacity with a lifecycle footprint of just 9.1 grams of CO2-equivalent per kilowatt-hour, and lifted nuclear's share of Finnish electricity from around a third to as much as 42% in some years. A second planned reactor, Hanhikivi-1, led by Russia's state nuclear company Rosatom, was cancelled by Finnish developer Fennovoima in May 2022 following Russia's invasion of Ukraine.
Construction on Olkiluoto 3 began in 2005 as Europe's first new nuclear build in over a decade — and became notorious for delays and cost overruns, taking until March 2022 to reach regular production and April 2023 to begin full commercial operation, roughly 18 years after ground was broken. Once running, it added 1,600 MW of firm, low-carbon capacity with a lifecycle footprint of just 9.1 grams of CO2-equivalent per kilowatt-hour, and lifted nuclear's share of Finnish electricity from around a third to as much as 42% in some years. A second planned reactor, Hanhikivi-1, led by Russia's state nuclear company Rosatom, was cancelled by Finnish developer Fennovoima in May 2022 following Russia's invasion of Ukraine.
Solving what most nuclear countries haven't:
Near Olkiluoto, Finland is building Onkalo — the world's first permanent, purpose-built deep geological repository for spent nuclear fuel, designed to safely isolate used fuel for the roughly 100,000 years it remains radioactive. Most countries with nuclear power still store spent fuel in temporary above-ground facilities decades after their reactors began operating; Finland's approach, if successful, positions it as the first country to demonstrate an operational, permanent solution to a problem that has stalled nuclear waste policy almost everywhere else.
Near Olkiluoto, Finland is building Onkalo — the world's first permanent, purpose-built deep geological repository for spent nuclear fuel, designed to safely isolate used fuel for the roughly 100,000 years it remains radioactive. Most countries with nuclear power still store spent fuel in temporary above-ground facilities decades after their reactors began operating; Finland's approach, if successful, positions it as the first country to demonstrate an operational, permanent solution to a problem that has stalled nuclear waste policy almost everywhere else.
The forest industry's other product
World-leading bioenergy, built on Finland's forests
Bioenergy at a scale few countries match:
Finland's extensive forest industry doesn't just produce timber and paper — its side-streams (bark, sawdust, black liquor, forest residues) make Finland one of the world's leading bioenergy users relative to its population. Total bioenergy use reached roughly 116 TWh in 2020, of which wood energy alone accounted for about 93 TWh; national scenario modelling projects this could grow to 139-144 TWh by 2035 as Finland leans further on biomass to hit its carbon-neutrality target. Alholmens Kraft, in Pietarsaari, was the world's largest biomass power plant at its 2001 commissioning and remains one of the largest today, burning a mix of wood residues, peat, and other biofuels to supply both electricity and district heating.
Finland's extensive forest industry doesn't just produce timber and paper — its side-streams (bark, sawdust, black liquor, forest residues) make Finland one of the world's leading bioenergy users relative to its population. Total bioenergy use reached roughly 116 TWh in 2020, of which wood energy alone accounted for about 93 TWh; national scenario modelling projects this could grow to 139-144 TWh by 2035 as Finland leans further on biomass to hit its carbon-neutrality target. Alholmens Kraft, in Pietarsaari, was the world's largest biomass power plant at its 2001 commissioning and remains one of the largest today, burning a mix of wood residues, peat, and other biofuels to supply both electricity and district heating.
A genuinely diversified clean mix:
Wind power has grown explosively — from roughly 2 GW of capacity in 2020 to 8-9 GW by 2024, supplying about a quarter of Finnish electricity that year, with further growth projected to 30 TWh by 2035 and 47 TWh by 2050. Combined with nuclear, hydropower (already near its full harvestable potential), and biomass, Finland's electricity mix is unusually diversified for a country its size — no single source dominates completely, which analysts see as a genuine strength for reliability even as debate continues over how much further to expand nuclear versus prioritising wind and bioenergy.
Wind power has grown explosively — from roughly 2 GW of capacity in 2020 to 8-9 GW by 2024, supplying about a quarter of Finnish electricity that year, with further growth projected to 30 TWh by 2035 and 47 TWh by 2050. Combined with nuclear, hydropower (already near its full harvestable potential), and biomass, Finland's electricity mix is unusually diversified for a country its size — no single source dominates completely, which analysts see as a genuine strength for reliability even as debate continues over how much further to expand nuclear versus prioritising wind and bioenergy.
Questions
Questions about Finnish energy
Why has Finland succeeded at permanent nuclear waste disposal when most nuclear countries haven't?
It's a combination of favourable geology, sustained political consensus, and simply starting decades earlier than most. Finland sits on some of the oldest, most stable bedrock in the world — crystalline rock that has remained geologically undisturbed for roughly two billion years, which is exactly the kind of long-term stability you want when isolating waste that stays radioactive for around 100,000 years. But geology alone doesn't explain it: many countries with comparably stable rock still haven't built a permanent site, because the decision requires sustained political and public buy-in across multiple decades and government administrations, something that's proven very difficult almost everywhere else (the United States, for instance, has spent decades and billions of dollars on its Yucca Mountain site without ever opening it). Finland began serious site investigation in the 1980s, selected Olkiluoto as the location in 2000, and has maintained a consistent national policy of long-term responsibility for its own nuclear waste ever since — helped by a small number of well-organised local communities near existing nuclear sites that were willing to host the facility, partly in exchange for economic development and existing familiarity with nuclear infrastructure. The result is a project that, while still not yet fully operational at full scale, is genuinely ahead of comparable efforts in France, the US, the UK, and elsewhere. Source: IEA Finland policy review · Grokipedia (Energy in Finland).
Provenance
Attribution and citation
- Sources
- International Energy Agency (IEA) Finland policy review · Grokipedia (Energy in Finland) · Finnish Ministry of Finance (Treasury Finland) · Finnish Energy (Energia.fi) Low Carbon Roadmap 2023 · Biofuels, Bioproducts and Biorefining journal (Proskurina et al. 2024) · POWER Magazine · Government of Canada Trade Commissioner Service
- Cite as
- "Finland Energy Profile — Complete Reference", The Energy Codex, https://thecodex.expert/energy/countries/finland/, last updated .