SpotVahtiIn short
Our comparison includes 3 contracts from Koillis-Satakunnan Sähkö: 1 spot-price contract and 2 hybrid contracts with a usage effect. The seller’s cheapest contract by home type: Apartment (2,000 kWh): PörssiWirta, about 215 € a year, rank 15/76; Detached house, no electric heating (6,000 kWh): PörssiWirta, about 541 € a year, rank 10/75; Detached house, direct electric heating (18,000 kWh): PörssiWirta, about 1,604 € a year, rank 6/71. The cheapest in the whole comparison for an apartment is Nordic Green Energy Pörssisähkö ei kuukausimaksua, 181 € a year. Prices were checked on 12 Nov 2026 on the seller’s own website.
Contracts
PörssiWirta Spot price
Margin 0.44 c/kWh, monthly fee 4.52 €
Price checked 11 Nov 2026 on the seller’s website
JoustoWirta 24 kk Usage effect · 24 mo
9.66 c/kWh ± usage effect, monthly fee 4.52 €
Price checked 12 Nov 2026 on the seller’s website
Seller’s website ↗ – Koillis-Satakunnan Sähkö JoustoWirta 24 kk
JoustoWirta 12 kk Usage effect · 12 mo
10.42 c/kWh ± usage effect, monthly fee 4.52 €
Price checked 12 Nov 2026 on the seller’s website
Seller’s website ↗ – Koillis-Satakunnan Sähkö JoustoWirta 12 kk
Annual price by home type
| Contract | Apartment 2,000 kWh | Terraced house 5,000 kWh | Detached house 6,000 kWh | Heat pump 10,000 kWh | Electric heating 18,000 kWh |
|---|---|---|---|---|---|
| PörssiWirta | 215 € rank 15/76 | 460 € rank 13/76 | 541 € rank 10/75 | 901 € rank 8/73 | 1,604 € rank 6/71 |
| JoustoWirta 24 kk | 250 € rank 31/76 | 543 € rank 34/76 | 641 € rank 33/75 | 1,033 € rank 33/73 | 1,817 € rank 33/71 |
| JoustoWirta 12 kk | 265 € rank 46/76 | 581 € rank 48/76 | 686 € rank 47/75 | 1,109 € rank 48/73 | 1,954 € rank 49/71 |
| Cheapest in comparison | 181 € Nordic Green Energy | 432 € Herrfors | 511 € Herrfors | 863 € Herrfors | 1,549 € Herrfors |
Frequently asked questions
Is Koillis-Satakunnan Sähkö the cheapest in the comparison?
In an apartment (2,000 kWh) the seller’s cheapest contract, PörssiWirta, ranks 15/76 at about 215 € a year, while the cheapest in the comparison costs 181 €. With direct electric heating (18,000 kWh) the cheapest is PörssiWirta, ranked 6/71 (1,604 €, cheapest 1,549 €). The ranking depends on consumption, so calculate your own price in the comparison.
Koillis-Satakunnan Sähkö PörssiWirta: what are the margin and monthly fee?
The margin is 0.44 c/kWh and the monthly fee 4.52 €/month. On top of that you pay the hourly spot price. Price checked on 11 Nov 2026 on the seller’s website.
Koillis-Satakunnan Sähkö JoustoWirta 24 kk: how are the price and the usage effect calculated?
The fixed part of the energy price is 9.66 c/kWh and the monthly fee 4.52 €/month, with a 24-month term. Each month a usage effect is added or subtracted: your consumption-weighted spot price minus the month’s average spot price. Based on actual Datahub consumption it averaged +0.14 c/kWh over 1 Nov 2025–31 Oct 2026 for metering points using 2,000–20,000 kWh a year. Price checked on 12 Nov 2026 on the seller’s website.
Koillis-Satakunnan Sähkö JoustoWirta 12 kk: how are the price and the usage effect calculated?
The fixed part of the energy price is 10.42 c/kWh and the monthly fee 4.52 €/month, with a 12-month term. Each month a usage effect is added or subtracted: your consumption-weighted spot price minus the month’s average spot price. Based on actual Datahub consumption it averaged +0.14 c/kWh over 1 Nov 2025–31 Oct 2026 for metering points using 2,000–20,000 kWh a year. Price checked on 12 Nov 2026 on the seller’s website.
Does the price include transmission?
No. Transmission fees and electricity tax are paid to your local network company and are the same whichever seller you buy electricity from. The annual prices in the comparison include energy, the seller’s margin and the monthly fee, with 25.5 % VAT.
Which contract is cheapest for you?
Calculate your annual price for every contract with your home type and consumption.
Read next
Spot prices: Ember, European Wholesale Electricity Price Data (CC-BY 4.0), original source Nord Pool. Contract prices from the seller’s own website. Method: How we compare. Spotted a mistake? [email protected]