1. Prices dropped 9% - the best performer in Europe

While most of Europe struggled with rising energy costs, Finland’s average wholesale price fell from €46 to €41/MWh. That makes Finland one of the cheapest electricity markets on the continent.

The improvement came from strong nuclear output - particularly the Olkiluoto 3 reactor running at capacity - combined with healthy hydro conditions. Finland’s energy mix is working.

Even Q1 2025, which hammered other markets, saw only modest increases in Finland (+19% vs Q1 2024), well below the 40-60% spikes seen elsewhere.

The takeaway: If you’re on a dynamic tariff in Finland, 2025 was a good year. Your costs likely decreased overall.

2. Overnight savings of 68% - the highest in Europe

Finland’s price curve has the most dramatic overnight dip of any market we analysed.

Charging at 03:00 instead of the evening peak saves you 68%. That’s not a typo - nearly 70% savings just by shifting when you charge.

Weekend savings are more modest at 38%, because Finland’s midday prices don’t dip as dramatically as in solar-heavy markets further south. The solar duck curve is less pronounced at northern latitudes.

This means the optimal Finnish strategy differs from Western Europe: overnight charging beats weekend daytime charging in most cases.

Gridio automatically captures these overnight lows, scheduling your charging for the 03:00-04:00 window when prices hit their floor.

The takeaway: Finland’s overnight opportunity is exceptional. If you can charge between 03:00-05:00, you’ll access some of the cheapest electricity in Europe.

3. 447 hours of negative prices - still substantial despite the drop

In 2025, wholesale prices went negative for 447 hours - down 38% from 2024’s exceptional 724 hours. The market is stabilising, with fewer extreme lows but also fewer extreme highs.

Most negative hours still occur during windy periods and sunny weekends when generation exceeds demand. If you’re on a dynamic tariff, these remain free charging opportunities.

The takeaway: Negative hours decreased, but 447 is still significant - more than Belgium or Denmark. Dynamic tariffs continue to unlock free electricity windows.

4. Tuesday and Saturday are your best days

Not all days are equal. Wholesale prices follow non-domestic energy use - offices, factories, commercial buildings - and that demand varies through the week.

Tuesday is the cheapest weekday in Finland, before the midweek industrial peak. Wednesday and Thursday tend to be the most expensive.

Saturday is the cheapest weekend day, slightly ahead of Sunday. Weekend prices overall are substantially lower than weekdays.

The takeaway: Schedule your main charging for Saturday if possible. For weekday needs, Tuesday offers the best rates.

5. The best times to charge your EV

Let’s make it practical. Based on 2025 data, here’s when to charge:

Weekdays (plugged in overnight):

Prices are lowest around 03:00 at just €30/MWh - among the cheapest overnight rates in Europe. The evening peak (19:00-21:00) averages over €90/MWh, so avoiding it saves you nearly 70%.

In Finland, overnight charging is almost always your best option during the week.

Weekends (flexible all day):

Charge at 14:00 for the best daytime rates - around €22/MWh. Unlike Western Europe, the midday dip is less dramatic, but it’s still the optimal weekend window.

The hour to avoid at all costs: 19:00-21:00 on weekdays. Peak demand, peak price. Charging during dinner time costs three times more than optimal timing.

The takeaway: Finland rewards overnight charging more than any other market. Target 03:00-04:00 on weeknights, and 14:00 on weekends.

The bottom line

2025 was excellent for Finnish electricity. Prices dropped while the rest of Europe paid more, and the overnight savings opportunity remains the best on the continent.

The gap between smart and dumb charging is nearly 70%. If you’re still plugging in at 19:00 or paying flat rates, you’re spending three times more than you need to.

A dynamic tariff plus smart timing is the simplest upgrade you can make.

Charge smart. Charge cheap.