Wind power

Wind power's share of Finnish electricity production has grown from near zero to over 20 % in the past decade. Installed wind capacity is now about 7 GW and is on track to roughly double by 2030.

Wind power's variability is significant: at its best, wind produces over 6 GW (more than 60 % of demand), but on calm days output can be only 0.1–0.5 GW. This flows directly into the spot price — the Finnish area price FI correlates strongly with the wind.

For a spot-contract holder, wind is a friend: on windy days you pay less. For a fixed-price holder wind is an indirect benefit because the long-term market price falls.

Wind power and the inverse spot price relation

On Nord Pool wind power offers electricity at near-zero marginal cost — once the farms are running, operating costs are mainly maintenance and admin. This lowers the market price whenever it is windy: the exchange fills with cheap bids, and the last needed plant sets the price at a lower level.

History shows this clearly: on the 10 windiest days of the year the Nord Pool FI average is typically 50–70 % below the yearly average. Conversely, on the 10 calmest days the price is 2–4× the average.

Finnish wind power development

2015: wind under 500 MW, share under 2 %

2020: about 2,600 MW, share 10 %

2024: about 7,000 MW, share over 20 %

2030 forecast: 15,000+ MW, share 35–40 %

Most Finnish wind is on the west coast and in Northern Ostrobothnia where conditions are best. Offshore wind is only beginning — the first large offshore projects are planned for the Gulf of Bothnia.

Wind and your electricity bill

With a spot contract, the benefit from wind is direct: windy hours = cheap hours. Verrokit's weather and price page shows the wind power forecast for the next hours — letting you schedule EV charging or sauna to the right hours.

With a fixed-price contract the benefit comes long-term: wind growth lowers the level at which new fixed contracts are priced. 2024–2026 fixed contracts have been clearly lower than during the 2022 crisis — wind growth is the single biggest reason.