Finnish electricity price statistics

Time series

Monthly day-ahead averages

Each monthly figure is weighted by period duration rather than averaged across quotations. Across the whole record the most expensive month is August 2022 at 32.42 c/kWh and the cheapest August 2024 at 1.57 c/kWh; the extremes of the selected range appear under the pickers.

Time series

Yearly day-ahead averages

The same data by calendar year. The yearly average is weighted by period duration, not computed as the mean of monthly averages — February is a tenth shorter than January, so an unweighted mean would give it too much weight.

Hour of day

At what times has electricity been cheapest on average?

Average price by clock hour across the whole series. The cheapest hour is 03:00 at 4.50 c/kWh and the most expensive 09:00 at 12.37 c/kWh. The highest hourly average is 2.7 times the lowest. Weekdays and weekends are separated so their profiles can be compared.

Weekday (Mon–Fri)

9.88c/kWh

Weekend (Sat–Sun)

6.04c/kWh

Weekend cheaper by

39%

Hours are Finnish local time. These are averages across the whole series, not a forecast: on any single day the cheapest hour can fall anywhere. The weekday and weekend difference reflects the mix of days in this dataset; an individual weekday or weekend day need not follow the overall average.

15-minute settlement

Price varies within the hour too

The Nord Pool day-ahead market moved to 15-minute periods on 1 October 2025. The source API still supplied 60-minute prices to this dataset through 14 June 2026, so intra-hour variation can be analysed from 15 June 2026 onwards. Below is the spread between the priciest and cheapest quarter within the same hour, computed across 3,265 completed hours with all four quarters.

Median

0.78c/kWh

half of hours fall below this

Mean

1.61c/kWh

individual spikes pull the mean up

90th percentile

4.23c/kWh

one hour in ten exceeds this

Largest observed

26.07c/kWh

widest spread inside one hour

Spread above 1 c

44%

share of hours

Only completed hours with all four quarters present are counted, so a partially ingested hour cannot masquerade as a calm one. Market quarter-hours for 1 October 2025–14 June 2026 have not yet been backfilled into this dataset.

Extremes

Records in the series

The highest and lowest stored period value across the period covered by the data. These are not daily or monthly averages.

Highest period value

235.10c/kWh

Fri 5 January 2024, 19:00

Lowest period value

-50.00c/kWh

Fri 24 November 2023, 15:00

Market snapshot

Prices of contracts on offer

A cross-section of what is currently offered to Finnish consumers. For fixed contracts the figure is the energy price; for spot contracts it is the retailer’s margin on top of the exchange price. The table uses the ongoing list price; temporary campaign prices and monthly fees are excluded. Only products with a recorded source verification are included. Prices in these groups were source-checked on 29 October 2026 between 18:00 and 18:01.

Market time series

Price history of contracts on offer

Every morning this series records each comparable contract’s energy price or margin, monthly fee, campaign price and online orderability. The regulator’s price statistics describe currently offered products as monthly national weighted averages; this archive records prices at product level, daily. It currently holds 88 days and is extended each morning. The series exists only forward from the start of collection.

Monthly series

Spot vs. fixed realised-cost index

From September 2026 this page publishes a monthly comparison: what spot electricity cost typical consumption profiles in the closed month, and what the same month’s cheapest offered fixed-term contract would have cost. The method is fixed in advance and is not adjusted based on the results.

Clarified on 18 October 2026, before the first computation: “the month’s cheapest offered” means the cheapest contract present in the archive on any day of the month, with the same rule for both sides. Both sides use list prices without campaigns, every contract in the archive counts (including ones that cannot be ordered online), and the cheapest is the one with the lowest monthly cost, energy plus monthly fee, at the profile’s own consumption. A profile’s monthly consumption follows the season (the same model as the site’s bill calculator). Time-of-use and seasonal tariffs are excluded on both sides, because they have several energy rates rather than one list price (clarified the same day after the first computation, using the site’s own definition of a fixed contract). The first points (August and September) were published late, on 18 October 2026.

Ready-made images

Download and embed the charts

The page’s charts are available as finished image files with the attribution inside the image. They may be republished as-is, including commercially (CC BY 4.0), or redrawn in your publication’s own style. The images are generated from the same data as the page’s charts and update automatically. Chart labels are in Finnish.

The monthly chart can also be embedded; it always shows the newest data:

<iframe src="https://parassahko.fi/embed/kuukausikaavio"
  width="100%" height="440" style="border:0" loading="lazy"
  title="Pörssisähkön kuukausikeskiarvot – ParasSähkö.fi"></iframe>

Machine-readable

Endpoints and downloads

Each series has its own stable URL. All of them allow browser requests (CORS) and carry a licence header, so they can be called directly from an application or a notebook. The files are language-neutral: their column names are already in English.

CSV files use a comma as the field separator and a dot as the decimal separator. An empty cell means no observations — zero is a price, not missing data. The spot downloads contain derived statistical series, not raw period-level records; the contract-history file is a product-level archive. Responses are cached for one hour and are free to use with attribution.

Method

Where the numbers come from

Version history

What has changed in the dataset

This dataset has changed retroactively more than once: the history has been extended backwards and the upstream source’s VAT errors have been corrected. A figure published earlier may therefore differ from the same figure today, and that has to be stated — otherwise citing the dataset is guesswork. If you have published a figure from this data, check here whether a change touches it.

1. 1 October 2026

   Kokkolan Energia Vuodenaika uusiutuva: price on the row of 1 October 2026 corrected

   The quarterly-priced product's component in the Finnish Energy Authority price register had been left at the value of the ended July–September period, 8.22 c/⁠kWh, although the product's own note said the period ended on 30 September and that the price for 1 October – 31 December 2026 is 12.67 c/⁠kWh. The archive row of 1 October 2026 was corrected to 12.67. From the same day the register sync does not publish a price whose own note says its period has ended.

   Affects already-published figures: sopimushistoria.csv and sopimussarja.json downloaded on 1 October 2026 before this correction. In the series, the cheapest price of the group Fixed, open-ended on 1 October 2026 was 8.22 c/⁠kWh; corrected it is 9.99 c/⁠kWh. The group median did not change.

2. 1 October 2026

   Hehku Pörssi’s margin corrected for 21 August – 28 September 2026 (39 rows)

   From 21 August to 28 September 2026 the contract archive recorded Hehku Pörssi’s campaign margin (0.34, and from 29 August 0.33 c/⁠kWh for the first four months) in place of its standard margin. The standard margin was 0.99 c/⁠kWh. The rows were corrected: spot_margin is 0.99, the campaign margin is in the promo_spot_margin column and the pricing model is intro_offer. Row-level values and evidence are in the README section Corrected rows.

   Affects already-published figures: sopimushistoria.csv and sopimussarja.json downloaded before this correction. In the series, the cheapest spot margin on 21 August – 1 September 2026 was 0.34 or 0.33 c/⁠kWh, Hehku’s campaign margin; corrected it is 0.37 c/⁠kWh. From 2 September 2026 the cheapest margin did not change, and the median margin did not change on any day. If you computed the development of Hehku Pörssi’s margin, recompute it: the archive showed a decrease on 21 August and an increase on 29 September that did not happen. The actual change was a rise in the standard margin from 0.39 to 0.99, recorded in the archive on 20 August. The spot-margin figures of the September 2026 monthly review were corrected at the same time. The Zenodo version of 25 August 2026 (10.5281/zenodo.22090078) contains the erroneous rows of 21–25 August 2026; the corrected data is in the version of 3 October 2026 (10.5281/zenodo.23122106) onwards.

3. 22 September 2026

   Quarter-hour period end times normalised for 15 June – 2 August 2026

   From 15 June to 2 August 2026 the price API gave quarter-hour end times as :59.999, so 4,608 periods were one millisecond shorter than 15 minutes. The end times were corrected to match each period's resolution; prices and start times did not change. (Added to the changelog on 3 October 2026.)

   Affects already-published figures: The share of periods below one cent in June 2026 changed from 21.2% to 21.3%: the exact value is 21.25%, and the missing milliseconds had pushed it below the rounding boundary. No other figure in the daily and monthly files changed. The Zenodo version of 25 August 2026 (10.5281/zenodo.22090078) has 21.2; the version of 3 October 2026 (10.5281/zenodo.23122106) onwards has 21.3.

4. 22 September 2026

   Verification time, frozen-row flag and 12 corrected rows in the contract archive

   Two columns were added to sopimushistoria.csv: verified_at (when the price was last verified from the retailer’s source) and stale (the night’s price refresh did not verify the row, so the price is a frozen value from the previous successful observation). Previously a frozen price could not be told apart from a verified one. At the same time 12 rows recorded wrongly on 10–14 September 2026 were corrected: Fortum Duo 24 and 12 months on 10–11 September (the authority register’s lagging price filled a blank price slot), Aalto Huoleton on 11–14 September (an expired 7.49 campaign price) and four Cheap Energy products on 14 September (the previous evening’s prices after a price increase). All Aalto rows on 12–14 September and the Cheap rows on 14 September are flagged as frozen. Row-level values and evidence are in the README section Corrected rows.

   Affects already-published figures: sopimushistoria.csv and sopimussarja.json downloaded before this correction. In the series, the cheapest price of the group Fixed, open-ended on 11–14 September 2026 was 7.49 c/⁠kWh, Aalto Huoleton’s expired campaign price; corrected it is 7.53 c/⁠kWh. No other group figure changed. If you computed per-product price development on 10–14 September 2026 for Fortum, Aalto or Cheap Energy products, recompute it. An empty verified_at or stale on older rows means the information was not captured — not that the price was verified.

5. 21 August 2026

   Contract identity stabilised — contract_slug changed

   The contract identifier embedded the Finnish Energy Authority’s price-version id, and the authority mints a new id every time a product’s price changes. The same product therefore received a new contract_slug on every price change: Imatran Seudun Sähkö’s Voima 12 kk appears in the archive under four different identifiers within three weeks. The identifier is now derived from the supplier and the product name, and historical rows have been merged back under it.

   Affects already-published figures: All contract-history data (sopimushistoria.csv and sopimussarja.json) downloaded before 21 August 2026: contract_slug values have changed, and rows belonging to one product previously looked like several distinct products. If you analysed per-product price development or product churn, recompute it — churn appeared several times higher than it was. Prices, dates and other fields are unchanged. In the Zenodo archive the old scheme is in versions up to 4 August 2026 (10.5281/zenodo.21781098 and earlier); the corrected scheme is in the version of 25 August 2026 (10.5281/zenodo.22090078) onwards.

6. 4 August 2026

   Price history extended back to 2021

   The series previously began on 15 June 2025. History from 1 January 2021 was backfilled from the Porssisahko.net v1 history API, growing the dataset from roughly four months to over five years.

   Affects already-published figures: All extreme-value and superlative claims. The cheapest month changed: August 2024 (1.57 c/⁠kWh) is lower than any month in the earlier window. If you published a claim of the form “the lowest in the dataset” or “the highest on record” before 4 August 2026, it needs rechecking.

7. 4 August 2026

   77 hours restored to their statutory VAT rate

   The upstream API had applied the wrong rate: 48 hours on 30–31 August 2024 (25.5 % before it took effect), one hour on 1 May 2023 (10 % after the temporary period ended) and 28 negative hours before December 2022 (VAT added although the rate on negative prices is 0 %). The rows carry their own source tag and were verified hour by hour against VAT-free reference sources.

   Affects already-published figures: Monthly averages for August 2024 and May 2023, and the distribution of negative prices before December 2022. The changes are small but they are real.

8. 4 August 2026

   Two hours missing upstream were filled from Elering

   One hour was missing on 1 January 2021 and one on 15 June 2026. Both were taken from Elering’s open Nord Pool series and the statutory VAT for each day was added. Coverage is complete after this.

9. 3 August 2026

   Contract register criteria version 1 → 2

   Promotional-price and orderability fields were added to the contract archive, so the derived group series begins on 3 August 2026. Earlier days are in the archive but without these fields.

   Affects already-published figures: The daily contract-group series (sopimussarja.json) before 3 August 2026 — it starts on that date, not on the archive’s first day of 30 July 2026.

10. 30 July 2026

    Contract price archive begins

    First product-level daily snapshot of which electricity contracts were offered to consumers and at what price. The archive only accrues forward: it cannot be backfilled, because what was on offer was not recorded before this date.

11. 15 June 2026

    Quarter-hourly prices enter the dataset

    The upstream v2 API began delivering 15-minute prices. The market itself moved to 15-minute settlement on 1 October 2025, so between 1 October 2025 and 14 June 2026 an hourly value in this dataset is the mean of four quarters.

    Affects already-published figures: Minima, maxima and threshold shares over that window: they do not reveal individual quarter-hour extremes or their sign. Monthly averages remain comparable.

The dataset accrues forward daily; only changes affecting already-published history or the dataset’s structure are logged here. The version DOI that identifies a frozen snapshot is unaffected by any of them — that is precisely what it is for.

Independent source

How to check a figure against another source

A source that cannot be checked is not a source. These figures can be compared with an independent open dataset, and this is how.

1. 1

   Reference source

   Elering’s open Nord Pool API publishes the same Finnish bidding-zone day-ahead prices: dashboard.elering.ee. It was also used to fill the two missing hours in this dataset, so the route has already been tested.

2. 2

   Convert the tax first

   Elering publishes prices excluding VAT in €/MWh; this page shows them including VAT in c/kWh. The conversion is ÷ 10 and × that day’s VAT factor: 1.255 (from 1 September 2024), 1.24 (before that) or 1.10 (1 December 2022 to 30 April 2023). No VAT is added to negative prices.

3. 3

   Compare like with like

   Monthly and yearly averages are weighted by period duration. If you compute an unweighted mean from the reference source, you will get a different figure — not because either is wrong, but because the data contains both hourly and 15-minute periods.

4. 4

   If the figures do not match

   Tell me at [email protected] before publishing. I would rather fix an error than read it in your story — and if the error is mine, it goes into the changelog above.

Terms of use

How to cite

These statistics may be published, quoted and used freely, including commercially, as long as the source is credited. The licence is Creative Commons Attribution 4.0. Cite the live page for the current, updating dataset. The version DOI below is only for the earlier immutable Zenodo (CERN) snapshot.

ParasSähkö.fi: Finnish electricity price statistics. https://parassahko.fi/en/statistics (accessed 2026-10-29).

Pasanen, I. (2026). Suomen sähkön hintatilastot [Data set]. Zenodo. https://doi.org/10.5281/zenodo.21701225

Pasanen, I. (2026). Suomen sähkön hintatilastot (archived snapshot 2026-10-03) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.23122106

Contact: [email protected]. The dataset is produced by Funky Labs Oy (business ID 3628630-3), Finland.