Big Households

The challenge homeowners face:

Running your washing machine, dishwasher or tumble dryer at the wrong moment can cost you far more than it needs to. Electricity prices shift every 15 minutes — and most households have no idea. Timing is everything, and right now, you're probably getting it wrong.

Problem

Running appliances during expensive peak hours

Problem

Missing negative price windows

Problem

No visibility on what things actually cost to run

10s Solution

 Automatic off-peak scheduling 

10s Solution

Real-time tariff monitoring.

10s Solution

 Live cost tracking per appliance

Run your home for less.
Sometimes get paid to do the laundry.

Traditional Appliance Running Costs
420
With 10s Energy Tariffs
240
Annual savings up to
180

The average Belgian household spends over €420/year running large home appliances

How it works for everyday households

Three simple steps to start saving, no technical expertise needed.

Connect via Home Assistant

Link your smart plugs or home automation setup to 10s Energy. Works with all major smart home systems and plug brands. If it can be scheduled, we can optimise it.

 

  • Simple Home Assistant integration
  • Works with smart plugs and smart appliances
  • No electrician needed

Tell Us Your Window

Set the time window in which each appliance needs to finish. We'll automatically schedule it during the cheapest 15-minute slot within that window, so the dishes are always done by morning, at the lowest possible cost.

 

  • Set flexible time windows per appliance
  • Prioritise which tasks run first
  • Override any time with one tap

Smart Scheduling

Our system watches Elia's real-time prices around the clock and triggers your appliances when electricity costs least, or when it goes negative. You do nothing. The savings happen anyway.

 

  • Automatic price-based scheduling
  • Real-time savings tracking per appliance

Ready to run your home for less?

Join the Early Bird waiting list. You'll get VIP access to the 10s launch tariff before anyone else — and a better rate locked in from day one.

A smart supplier that really means it

The market can do better

You probably already know that running your washing machine at night is cheaper. But with 10s Energy, it's not just about night vs day, it's about every 15 minutes.

On sunny afternoons and windy nights, electricity prices can drop to zero or below. That's when your dishwasher should be running. That's when your tumble dryer should kick in. You set the window. We pick the moment. You save the money, without lifting a finger.

01. What are “everyday appliances” in the context of energy use?

Everyday appliances are the devices you use constantly—like fridges, washing machines, dishwashers, TVs, and kettles. Individually they seem small, but together they make up the majority of your home’s energy consumption.

02. Which household appliances use the most electricity?

Typically, the biggest energy users are refrigerators, washing machines, dryers, dishwashers, and anything that heats or cools. Heating elements and motors are the main culprits behind higher consumption.

03. What does 10s Energy actually do?

10s Energy helps you understand and optimize how energy is used in your home. It connects to your appliances and systems to give you clear insights, reduce unnecessary consumption, and improve overall efficiency—without adding complexity.

04. Do I need to change my existing setup to use 10s Energy?

No. 10s Energy is designed to work alongside your existing appliances and home setup. You don’t need to replace everything—most users start with what they already have and improve from there.

05. How quickly will I see results?

Most users start seeing insights immediately, with measurable improvements following as usage patterns are optimized. The biggest gains typically come within the first few weeks as inefficiencies are identified and reduced.

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