Smart Energy Management

Get paid to use electricity

Tap into real-time energy tariffs and charge your appliances when prices are lowest—or even negative. Save money automatically, or make money while you power your home.

This calculator gives you a realistic estimate of what your electricity bill could look like — but it's exactly that: an estimate. The figures are based on Belgian reference tariffs and typical household profiles, and your actual bill will depend on your specific consumption patterns, the grid operator in your area, your supplier's contract terms, and real-time market prices at the time you use energy.

Tariff components — particularly distribution network rates and federal levies — are updated annually and may have changed since this calculator was last refreshed.

The 10s Smart savings shown are modelled on typical smart load-shifting behaviour and are not a guarantee of the saving you'll achieve. We'll give you a precise, personalised quote when you sign up.

How 10s Energy Works

Unlock Limitless Possibilities

Our intelligent platform connects you to the dynamic energy market, ensuring you always get the best possible price.

Connect Your Appliances

Set up your big energy consumers like EV chargers, washing machines, dishwashers, and heat pumps in minutes.

We Monitor Prices 24/7

Our system tracks real-time energy tariffs across the market, identifying the cheapest—and even negative—pricing windows.

Smart Scheduling

Your appliances automatically charge when prices hit rock bottom, saving you money without lifting a finger.

Get Paid to Consume

When prices go negative, you actually earn money by using electricity. It's like getting paid to do your laundry!

Take Control Of Your Electricity Costs

Why Choose 10s Energy?

Massive Savings

Save up to 60% on energy costs by charging during the cheapest hours

No Contracts

Cancel anytime, no hidden fees, no long-term commitments

Easy to Use

Set it once and forget it. The app handles everything automatically

Eco-Friendly

Use energy when renewables are abundant, reducing your carbon footprint

24/7 Monitoring

We track prices every second to find the best opportunities for you

Detailed Insights

See exactly how much you're saving with comprehensive reports

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