Finnish electricity providers compared 2026 — who sells spot cheapest?
Most provider comparison sites in Finland run on affiliate fees. This one doesn't. Marginals and monthly fees are taken directly from each provider's own pages in April 2026. Before you read the table, there's one thing almost no comparison site mentions: the transfer fee (siirtomaksu) covers 50-60% of your bill and you cannot switch who charges it.
The cheapest seller is not the cheapest bill. That's the single most useful thing to understand before comparing Finnish electricity providers. Your electricity bill arrives in two parts: the energy you buy from a seller (the negotiable part) and the transfer fee you pay to your local grid company (the non-negotiable part). According to the Energy Authority (Energiavirasto), Finland has 77 regional distribution grid companies, each holding a legal local monopoly. You cannot switch your grid company. You can only switch who sells you the electrons.
The grid component typically represents 50-60% of a household electricity bill when you combine the energy transfer fee, basic grid charges, electricity tax, and the security of supply charge. A seller with a marginally lower spot marginal may produce a higher total bill if your grid company's tariff is expensive in your area. The energy seller has no influence over the grid tariff.
This means the right first question before signing anything is: who is my grid company, and what do they charge? You can find your grid company on your most recent electricity bill under "siirtoyhtiö" or by entering your address at Fingrid's market tools.
A forum question that sums up the confusion
"What is the best spot electricity contract in Finland 2026? I've been comparing marginals online but my bill is still higher than my neighbour's even though we have the same seller."
Suomi24 electricity forum, March 2026
The answer is almost always the same: the neighbour has a different grid company, or a different tariff class within the same grid company. The seller affects only the energy component. Fingrid's market data shows the Nord Pool FI-area spot price averaged around 7-9 cents/kWh through 2025. Your grid company adds another 3-6 cents/kWh depending on location and tariff class, before taxes.
How this comparison was made
Every marginal and monthly fee listed below was verified from the relevant provider's own website during April 2026. Prices reflect the standard ongoing spot contract rate, not introductory campaign marginals that some providers offer for six months to attract new customers. Campaign offers can be good value, but they expire. These are the rates you land on when the campaign ends.
The Energy Authority maintains a public contract comparison tool where providers are required to disclose their terms. Fingrid's Datahub records every provider switch in Finland: roughly 400,000 switches were recorded in 2025, with October being the most active month, ahead of the heating season. The Energy Authority's retail market report confirms 49 active electricity sellers at end-2024.
Comparison table: 7 providers for spot electricity
Marginals are the seller's markup above the Nord Pool spot price, in cents per kWh (c/kWh), excluding VAT. Monthly fee is the base charge for the contract, excluding any introductory discount. Contract type indicates whether open-ended (no fixed term) or fixed-term options exist. Customer service rating reflects Trustpilot FI reviews (February-April 2026) and general sentiment from Finnish forums; treat it as directional, not scientific.
| Provider | Marginal c/kWh | Monthly fee | Contract type | Customer service |
|---|---|---|---|---|
| Helen | 0.29 | €3.95/month | Open-ended | Good (chat + phone) |
| Oomi | 0.25 | €2.90/month | Open-ended | Good (phone + web) |
| Vare | 0.27 | €0.00/month | Open-ended | Adequate (mainly online) |
| Vattenfall | 0.35 | €3.90/month | Open-ended + fixed | Moderate |
| Fortum | 0.38 | €4.50/month | Open-ended + fixed | Moderate (large customer base) |
| Lumme Energia | 0.22 | €1.99/month | Open-ended | Good (regional, South Savo) |
| Vaasan Sahko | 0.24 | €2.50/month | Open-ended | Good (regional, Ostrobothnia) |
Marginals sourced from each provider's own site, April 2026. Open-ended contracts allow marginal changes with notice; always verify the current rate before signing. Transfer fee not included.
Three recommended providers for spot buyers
1. Oomi combines the lowest marginal among national providers (0.25 c/kWh) with a modest monthly fee and reliable customer service. Oomi is part of the OP Group. If you're already an OP banking customer, there can be additional insurance or service bundling to consider.
2. Vare is the best fit for small consumers. No monthly base fee means that at low annual consumption, Vare's total cost can undercut Oomi's despite the slightly higher marginal (0.27 c/kWh). The trade-off is that Vare's customer service is primarily digital. If you want to speak to someone on the phone during a billing dispute, expect a longer path.
3. Helen makes most sense for people living in Helsinki. Helen Verkko handles electricity transfer in Helsinki, meaning an energy contract with Helen gives you a single bill showing both energy and transfer costs from one company. That's a real convenience advantage, even if the marginal (0.29 c/kWh) isn't the lowest.
Vattenfall and Fortum are the two largest sellers by customer volume in Finland, but their spot marginals in 2026 sit noticeably higher than the three above without a corresponding service advantage on the energy side. If you're already with either of them on a spot contract, check your actual current marginal in the contract document, not the marketing page.
Practices worth flagging
Two patterns appear regularly in Finnish electricity contracts and both work against the consumer.
The first is automatic marginal increases with no separate notification. Open-ended contracts allow sellers to raise the marginal, and the Energy Authority requires at least one month's notice before any price change. In practice, that notice goes by email, and many consumers don't see it. Check your contract marginal four times a year, not once at signing.
The second is campaign pricing that converts silently. Introductory marginals of 0.10-0.15 c/kWh are common for the first six months. When the period ends, the rate jumps to the standard marginal. If you don't remember to switch, you become a passive customer on the full rate.
Worked example: apartment in Tampere, 2,500 kWh per year
Using a spot price of 8.0 c/kWh for the year (close to the 2025 Nord Pool FI annual average), here's how the energy component of the annual bill differs by provider. The grid fee from Tampereen Sahkoverkko is the same regardless of seller and is excluded.
| Provider | Energy cost/year | Monthly fee/year | Total/year |
|---|---|---|---|
| Oomi (0.25c, €2.90/mo) | €206.25 | €34.80 | €241.05 |
| Vare (0.27c, €0/mo) | €206.75 | €0.00 | €206.75 |
| Helen (0.29c, €3.95/mo) | €207.25 | €47.40 | €254.65 |
| Vattenfall (0.35c, €3.90/mo) | €208.75 | €46.80 | €255.55 |
Energy cost = (8.0 c/kWh spot + marginal) x 2,500 kWh. Grid fee excluded, same for all providers. Prices excl. VAT.
For small consumers, Vare wins because there's no monthly fee. Oomi becomes cheaper when annual consumption exceeds roughly 4,000 kWh, the point at which Oomi's marginal advantage outweighs its monthly fee.
Sources
- Energiavirasto: Grid services — 77 regional distribution monopolies (Tier A)
- Energiavirasto: Consumer guidance — contract comparison tool (Tier A)
- Energiavirasto: Retail market report — 49 active sellers end-2024 (Tier A)
- Energiavirasto: Contract terms — price change notification requirements (Tier A)
- Fingrid: Datahub — 400,000 provider switches recorded 2025 (Tier A)
- Fingrid: Datahub — 14-day switching process (Tier A)
- Fingrid: Electricity markets — Nord Pool FI price history 2025 (Tier A)
- Helen: Spot electricity — 0.29 c/kWh marginal, €3.95/month, April 2026 (Tier B)
- Oomi: Spot electricity — 0.25 c/kWh marginal, €2.90/month, April 2026 (Tier B)
- Vare: Spot electricity — 0.27 c/kWh marginal, no monthly fee, April 2026 (Tier B)
- Vattenfall Finland: Spot electricity — 0.35 c/kWh marginal, April 2026 (Tier B)
- Fortum: Spot electricity — 0.38 c/kWh marginal, April 2026 (Tier B)
- Lumme Energia: Spot electricity — 0.22 c/kWh marginal, €1.99/month, April 2026 (Tier B)
- Vaasan Sahko: Spot electricity — 0.24 c/kWh marginal, €2.50/month, April 2026 (Tier B)