A tariff that could even make you money.

Access real-time electricity prices.

Get electricity pricing that moves with the wholesale marketβ€”in 15-minute intervals.

Instead of being locked into a tariff designed around the average household, you can see when electricity is cheapest, avoid price spikes, and take advantage of opportunities to shift or automate your usageβ€”and potentially even earn money.

Modern homes use energy differently.

We’ve built a tariff thatΒ keeps the cost under control.

You made the leap to become more electric...

Electric vehicles, heat pumps, solar panels, batteries, and smart devices are are the right decision, but they are turning homes into dynamic, high-consumption environments.

...but tariffs are still built for the old world.

Most energy products are designed for predictable usage patterns. They aim for simplification, but remove your ability to respond to real energy market conditions.

You shouldn't carry the cost of that mismatch.

10sEnergy is optimised for how you actually consume energy. Our tariffs give you the flexibility to plug your high consuming appliances into the real time energy market.

Gain real-time pricing visibility.

View electricity prices in 15-minute intervals based on real wholesale market data.

Understand when to use energy.

Know when electricity is cheapest or most expensive, so you can make informed decisions.

Shift and optimise usage.

Move flexible consumptionβ€”like EV charging or appliancesβ€”away from peak pricing periods.

Turn volatility into advantage.

Take advantage of price drops and potential negative pricing events instead of being exposed to them.

You choose what connects to the real-time market, so you can take advantage of the lowest available prices...around the clock.

For EV owners

Charge when electricity prices are low, instead of defaulting to expensive peak periods.

For solar households

Understand how your consumption interacts with the wider energy market.

For heat pump users

Shift or optimise usage around pricing signals where possible.

High-consumption

Turn complexity into an advantage instead of being penalised by one-size-fits-all tariffs.

Most energy companies are built for scale. They design products for the largest possible market, smooth out the complexity, and price risk into contracts that protect their margins.

10s Energy is built differently.

We’re a technology-first energy company creating products for customers whose real and valuable needs have long been underserved.

The energy transition needs companies willing to embrace complexityβ€”and work alongside their customers to make what is happening on the grid genuinely transparent. Most importantly, it means sharing the financial benefits with the people driving that transition forward: you.

FAQ

I've had solar for four years. I had no idea I was leaving this much money on the table. The first quarter on 10s more than covered the prosument tariff.

Bart V. Ghent
8 kWp, Flanders

01. What is 15-minute electricity pricing?

It means electricity prices can change in short intervals based on real market conditions. This creates opportunities for customers who can shift or optimise when they use electricity.

02. Can this really save me money?

Potentially, yes β€” especially if you have flexible electricity usage, such as EV charging, heat pump consumption, battery storage, or business operations that can be shifted. However, savings are not guaranteed and depend on your usage and market conditions.

03. What kind of customers is this for?

10s Energy is best suited to energy-aware households, EV owners, prosumers, heat pump users, solar households, and businesses with meaningful or flexible electricity consumption.

04. Is the calculator a final quote?

No. The calculator provides an estimate based on real data, but results are indicative and subject to change before launch.

10s Energy β€” Price Calculator
10s energy

Estimate your electricity bill

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

CREG-compliant Β· reference consumption 3,500 kWh/yr Β· 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 β€” 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 β€” 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 β€” or estimate below.

Don't know your peak? Estimate from appliances
EV charging
Charger power
Charges per week3Γ—
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 β€” 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/week3Γ—

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 week4Γ—

Dishwasher
Runs overnight during cheapest windows
Cycles per week5Γ—
Your estimated annual bill
Full breakdown β€” standard tariff
Total annual consumption
β€”
base + smart appliances
Of which on 10s smart tariff
β€”
EV, heat pump, appliances
Energy (standard rate)β€”
Distribution (kWh component)β€”
Distribution fixed chargeβ€”
Capacity tariffβ€”
Green certificatesβ€”
CHP/cogen levyβ€”
Federal leviesβ€”
Elia transmissionβ€”
All above ex. VAT
VAT (21%)β€”
Total estimated annual billβ€”
What you could pay instead
Three-way comparison
Option 1
Fixed market tariff
β€”
CREG reference avg 2025
Option 2
Standard dynamic tariff
β€”
Elia day-ahead avg, no shifting
Fixed market tariffβ€”
Standard dynamicβ€”
10s Smartβ€”
Estimated annual saving vs fixed tariff with 10s Smart β€”
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 β€” 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 Γ— coefficient + fixed constant).

Indicative margin add-on
β€”
at your consumption level
Applies to
Standard dynamic & 10s Smart
same for both options
10s Smart β€” 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 β€”/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