The challenge homeowners face

Heat pumps

Running a heat pump on a standard tariff means you're paying the same rate whether electricity is cheap or expensive. With grid prices shifting every 15 minutes, the timing of your heating can make a real difference to your bill.

Run your Heat Pump. Sometimes get paid.

Traditional Costs
850
With 10s Energy Tariffs
550
Annual savings up to
350

The average Heat Pump homeowner pays €850/year to charge at home

How it works for heat pump owners

Subheadline: Getting started is simple. Three easy steps to start saving on every heating cycle.

Connect Your Heat Pump

Link your heat pump to 10s Energy via Home Assistant. Compatible with all major brands including Daikin, Mitsubishi, Vaillant, and Nibe. Setup takes just a few minutes.
  • Simple Home Assistant integration
  • Compatible with all major heat pump brands
  • No new hardware or electrician needed

Set Your Comfort Preferences

Tell us your target temperature and the times you need your home warm. We'll handle the rest — running your heat pump when electricity costs least, not when it costs most.
  • Set your preferred temperature range
  • Schedule heating around your daily routine
  • Override any time for instant comfort

Automatic Smart Heating

Our system monitors Elia's real-time prices every 15 minutes and runs your heat pump during the cheapest windows. Sometimes prices go negative — meaning you get paid to heat your home.
  • Automatic price-based scheduling
  • Real-time savings tracking

Problem

 Paying peak rates to heat your home

Problem

Missing negative price windows

Problem

High bills despite an efficient system

10s Solution

Automatic off-peak heating

10s Solution

Real-time tariff monitoring.

10s Solution

Smart scheduling around your comfort preferences

A smart supplier that really means it

The market can do better

Almost every day, electricity prices dip, sometimes below zero. Your heat pump is one of the highest-consuming devices in your home, which also makes it one of the biggest opportunities.

Instead of running at expensive peak times, your system learns to work when the grid is flush with cheap renewable energy. The house gets warm. The bill gets smaller. On the best days, the market even pays you to run it.

01. Why is it better than my current contract?

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sed tincidunt velit. Donec bibendum turpis vitae maximus bibendum. Class aptent taciti sociosqu ad litora torquent.

02. Tell me more about the markets.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sed tincidunt velit. Donec bibendum turpis vitae maximus bibendum. Class aptent taciti sociosqu ad litora torquent.

03. What is a Quarterly Price?

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sed tincidunt velit. Donec bibendum turpis vitae maximus bibendum. Class aptent taciti sociosqu ad litora torquent.

04. What is a BETA tester?

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sed tincidunt velit. Donec bibendum turpis vitae maximus bibendum. Class aptent taciti sociosqu ad litora torquent.

05. Another question.

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla sed tincidunt velit. Donec bibendum turpis vitae maximus bibendum. Class aptent taciti sociosqu ad litora torquent.

10s Energy — Price Calculator
10s energy

Estimate your electricity bill

See what you'd pay on a standard tariff vs the 10s Smart contract — with the full capacity tariff calculation for Flanders.

CREG-compliant · reference consumption 3,500 kWh/yr · Belgium 2025–2026
1
Household
2
Grid costs
3
Smart apps
4
Results
1
Your household
Region
Network area
Capacity tariff rate varies by area. Check your bill or Mijn Fluvius if unsure.
I don't know my consumption
Use Belgian average for a home without EV or heat pump
Base household consumption 2,200 kWh
Lighting, fridge, TV, cooking — everything except your EV and heat pump. Those are added separately in step 3.
2
Capacity tariff Flanders

Since January 2023, part of your grid cost is based on your peak 15-minute draw each month — not just total consumption. The higher your simultaneous load, the higher your capacity tariff.

Average monthly peak 4.5 kW
Your highest 15-min power draw in a typical month. Find yours in Mijn Fluvius — or estimate below.

Don't know your peak? Estimate from appliances
EV charging
Charger power
Charges per week
Heat pump
Rated power
Hours/day (winter avg)6 h
Oven / hob
Draw when cooking
Washer / dryer
Combined draw

3
Smart appliances on the 10s tariff

These run on real-time Elia quarter-hour pricing. 10s automatically shifts them to the cheapest windows — including negative-price periods when you're paid to consume.

Fetching Elia prices...

EV charging on 10s smart
Scheduled to cheapest overnight windows
I don't know my EV usage
Use Belgian average (3,000 kWh/yr, ~15,000 km)
Battery size
Charges/week

Heat pump on 10s smart
Pre-heats when prices are low (thermal battery logic)
I don't know my heat pump usage
Use Belgian average (3,500 kWh/yr, medium home)
Rated power
Hours/day (winter)6 h

Washing machine
Delayed start to cheapest window
Cycles per week

Dishwasher
Runs overnight during cheapest windows
Cycles per week
Your estimated annual bill
Full breakdown — standard tariff
Total annual consumption
base + smart appliances
Of which on 10s smart tariff
EV, heat pump, appliances
Energy (standard rate)
Distribution (kWh component)
Distribution fixed charge
Capacity tariff
Green certificates
CHP/cogen levy
Federal levies
Elia transmission
All above ex. VAT
VAT (21%)
Total estimated annual bill
What you could pay instead
Three-way comparison
Option 1
Fixed market tariff
CREG reference avg 2025
Option 2
Standard dynamic tariff
Elia day-ahead avg, no shifting
Fixed market tariff
Standard dynamic
10s Smart
Estimated annual saving vs fixed tariff with 10s Smart
Not included in any figure above

Neither the standard dynamic nor the 10s Smart costs include the supplier's commercial margin. The fixed market reference already embeds a typical margin — the dynamic figures do not.

Belgian dynamic tariff providers typically charge €0.015–0.025/kWh above spot plus an annual fee of approximately €50–80/yr (Luminus: €0.021/kWh + €75/yr; Engie: spot × coefficient + fixed constant).

Indicative margin add-on
at your consumption level
Applies to
Standard dynamic & 10s Smart
same for both options
10s Smart — appliance breakdown
Per-appliance cost on real-time Elia pricing
Capacity tariff saving with 10s: Smart shifting reduces your average monthly peak by ~35%, saving /yr on the capacity tariff alone.

Ready to switch to smart pricing?

Join our early bird list and be among the first to access the 10s Smart contract.

Get early bird access
Step 1 of 4