Question 1

Do I need a spot-price electricity contract?

Accepted Answer

Yes. SpotBoiler saves money by heating during the cheapest hours. This only works if your electricity price changes hourly, which requires a spot-price (exchange) contract from your provider. Most Baltic and Finnish providers offer these — Enefit, Elektrum, Alexela, Fortum, Helen, and others.

Question 2

Which smart socket should I buy?

Accepted Answer

For boilers and underfloor heating under 2.5 kW: Shelly Plug S or Sonoff S26. For higher-power appliances like sauna heaters (6+ kW): Shelly Pro 1/2 or Sonoff POWR3 relay, installed by an electrician.

Question 3

Will I run out of hot water?

Accepted Answer

No. You set comfort windows (e.g. 'heat before 7 AM') and a minimum daily guarantee in hours. Even on very expensive days, SpotBoiler always meets your minimum. You can also manually override any hour.

Question 4

Is my data safe?

Accepted Answer

Yes. We connect via secure OAuth tokens — we never store your device password. All data is in EU data centers. We are GDPR compliant. You can delete your account and all data at any time.

Question 5

Which countries are supported?

Accepted Answer

Estonia, Latvia, Lithuania, and Finland — all on the Nord Pool electricity market.

Question 6

Can I cancel anytime?

Accepted Answer

Yes. No lock-in contracts. The 30-day trial is free with no credit card. After that, cancel anytime from your dashboard.