Electricity tariffs in Finland: spot prices, contracts and your bill
Information checked:
In this guide
A low bar on Finland’s market chart is an opportunity, not your final electricity price. Whether using that period lowers your bill depends on your contract, your meter and your network tariff. Start with those three things before changing how you heat your home or charge your car.
First identify what kind of contract you have
With spot electricity, your energy cost follows the market for the billing intervals in your contract, plus the supplier’s fees. A genuinely fixed energy price does not follow the day’s highs and lows. A consumption-adjusted contract, often called kulutusvaikutus, käyttövaikutus or a hybrid, has an agreed base price and an adjustment related to when you consume. It is not fully fixed: the adjustment can raise or lower the price. KKV: electricity questions and contract types.
For example, a hypothetical hybrid base of 8 ct/kWh with a +1 ct adjustment costs 9 ct/kWh for energy, before any separately charged fees. A −1 ct adjustment gives 7 ct/kWh. Neither result is the market chart’s price. Ask for the exact adjustment formula and a calculation using your own consumption before comparing it with pure spot electricity.
Our day average is a market summary, not your household’s average purchase price. If most of your consumption falls in expensive periods, your consumption-weighted price can be substantially higher.
A quarter-hour chart needs the right metering
The market’s 15-minute prices do not prove that your meter measures each quarter. Oomi explains that, for its quarter-hour product, an hourly reading is divided into four equal quantities if the meter has not been upgraded. Moving consumption between quarters of that same hour then does not change the allocated quantities. Confirm your meter’s resolution with your network operator and the billing method with your supplier. Oomi: quarter-hour pricing and hourly meters.
This distinction matters more than trying to catch the cheapest single bar. For flexible car charging, compare a realistic charging window. For heating, allow for comfort and heat losses; do not assume all daily consumption can be moved to one cheap interval.
Supplier examples: compare the complete offer
Checked on 11 September 2026. These are examples, not a ranking or a complete market comparison. Offers, optional services and customer eligibility can change. An amount not listed here is not necessarily zero.
| Supplier and product | What to look at | Practical check |
|---|---|---|
| Helen Pörssisähkö | Published margin 0.49 ct/kWh and basic fee €4.96/month, including 25.5% VAT; quarter-hour spot pricing. | Compare both the margin and the recurring fee, then check any optional services. Helen product page |
| Fortum Tarkka | Quarter-hour spot product with a margin and a monthly basic fee. | Obtain the dated offer, including VAT, and check whether any price-fixing service has a separate charge. Do not treat an optional price fix as an automatic cap. Fortum Tarkka |
| Oomi Aktiivinen | Ongoing spot contract with a margin and basic fee; the product explains its handling of hourly meters. | Confirm the offered fees and actual metering. A quarter-hour product name alone does not establish quarter-hour measured consumption. Oomi Aktiivinen |
A useful comparison is 12 × monthly fee + annual kWh × margin, using the same VAT basis and excluding the shared spot component. In an invented comparison, a €3 higher monthly fee needs a margin saving of 0.5 ct/kWh on 600 kWh/month merely to break even. This does not rank the suppliers above; it shows why household size matters.
Network charges and the April 2026 tax change
The supplier’s energy charge is only one part of the bill. Check your own network product for fixed charges, day/night or seasonal rates and any applicable power-based charge. Caruna, for example, describes different general, night and seasonal products; their prices are not interchangeable. Caruna: network products.
Do not assume that every household already pays a peak-power fee. Caruna’s February 2026 notice says any changes to its consumer products would start no earlier than 2027 and that a non-power-based option remains available. If your tariff does charge for peaks, running several large appliances together may offset energy savings. Caruna: consumer power-charge changes.
From 1 April 2026, tax class I electricity has an energy tax of 2.24 ct/kWh plus a security-of-supply fee of 0.085 ct/kWh: 2.325 ct/kWh before VAT. The earlier 2.253 ct figure applies through March, not to the whole year. Vero: dated electricity tax tables. The standard VAT rate is 25.5%. Vero: VAT rates.
Check whether displayed fees already include VAT. Adding it again to a VAT-inclusive margin or monthly fee overstates your bill.
A worked bill for 200 kWh
This is an illustration for a month after March 2026, not a supplier quote. Apart from the ordinary class I tax and VAT, all prices below are invented. Every input is VAT-exclusive. The network assumptions include no separate power charge.
| Component | Calculation before VAT | Amount |
|---|---|---|
| Consumption-weighted market energy | 200 kWh × €0.06 | €12.00 |
| Supplier margin | 200 kWh × €0.004 | €0.80 |
| Supplier basic fee | Monthly | €4.00 |
| Network energy charge | 200 kWh × €0.03 | €6.00 |
| Network basic fee | Monthly | €10.00 |
| Class I tax and security-of-supply fee | 200 kWh × €0.02325 | €4.65 |
| Subtotal | All rows above | €37.45 |
| VAT | €37.45 × 25.5% | €9.55 |
| Total | Rounded to cents | €47.00 |
The resulting all-in average is about 23.50 ct/kWh, not the assumed 6 ct market price. Moving consumption does not eliminate monthly fees, so that all-in average is not the saving from shifting each kWh. Actual invoices may round components differently.
Negative prices and checks before switching
With the same invented fees, a market price of −1 ct/kWh still leaves 4.725 ct/kWh before VAT in variable charges: −1 + 0.4 + 3 + 2.325. That is about 5.93 ct/kWh including VAT, with monthly fees extra, assuming the contract passes negative prices through fully. A negative market bar is not necessarily free electricity.
- Use a representative year of your consumption, including winter, rather than choosing a tariff from one unusually cheap day.
- Confirm meter resolution, billing interval, margin, recurring fees, optional extras and the post-promotion price.
- Check the end date and termination conditions of your existing contract before arranging a switch. A new offer does not cancel an existing fixed-term obligation automatically.
- Compare offers through the Energy Authority’s price comparison service linked by KKV’s electricity guidance, then read the supplier’s dated terms.
- Keep network charges separate in the comparison. Use only safe, genuinely flexible consumption for scheduling; solar-export payments need their own calculation.
Sources and review date
The linked tax authority, consumer authority, supplier and network-operator sources were checked on 11 September 2026. The guide explains household purchasing decisions, not personalized tax advice or guaranteed savings. Use the contract and network tariff applicable to your address and delivery dates.