For energy suppliers•API available

ERE belongs onthe energy bill

Every kWh your customer charges at home produces an ERE. We turn it into an amount per connection, fully automatically. You fetch it from our API and put it on your bill.

Once approved, you create a sandbox key yourself in the partner portal.

Talk to us first

Your energy bill

Q3 2026

Electricity supply
Network charges
Energy tax
ERE credit for home charging820 kWh via Joulo: − €113.16

Example at our customer average of 4,100 kWh per year, of which 820 kWh falls in the third quarter. Calculated at 13.8 cents net per kWh: the average of all our sales at a 10% service fee.

Our vision

Solar panels got a line on the bill.Home charging does too.

When solar panels went on the roof, feed-in went on the bill. Nobody had to know how it worked. It was simply there, next to the power you used.

Home charging works the same way. A charging session costs power and produces an ERE. Cost and return belong on the same bill, from the company that supplies the power.

In between sits a separate world: a register at the NEa, MID meters, verifiers and brokers. Your customer never has to see it. And you never have to build it.

Why energy

The ERE belongs to the connection, not the charger

An ERE arises on the EAN the charging session runs on. One mandate applies per connection. The payout goes to whoever holds the energy contract, also for a lease car. That is your customer. So this is for the energy supplier, not for the CPO.

CPO

Runs the charger

Manages the charge point and the charge card
Fixes faults
Bills guests who charge

Energy supplier

Owns the connection (EAN)

Supplies the power on the EAN
Holds the contract with the resident
Already sends a bill every month

This is where the ERE belongs.

Running chargers? See white-label for CPOs

Fully automatic

One API, from charging session to bill line

You send us your customers

Through the API, with your own customer number. Your customer only signs the mandate.

We connect and measure

15 charger brands directly through their cloud, plus charging platforms and OCPP 1.6J. Only kWh from a factory-fitted MID meter counts.

We register and sell

Joulo holds an account with the NEa. An independent verifier checks the registrations. We sell in tranches across the year.

You fetch the amount

Per connection, the net amount per quarter, under your customer number. When final is true, the amount is fixed. That goes on the bill.

GET /partner/ere-positions?year=2026

{
  "ean": "871685920000123456",
  "external_ref": "KLANT-8842",
  "realized_net_eur": 214.68,
  "quarters": [
    {
      "quarter": "2026 Q2",
      "realized_net_eur": 68.85,
      "final": true
    }
  ]
}

Trimmed example. A quarter is final once all its ERE are sold.

API documentation How the sandbox works Open sale log

Live today

Two live. 8 onboarding. The whole of the Netherlands next.

Live
Frank Energie and Tibber
Their customers register through Joulo and never pay more than a 10% service fee. That is 13.8 cents net per kWh on average. The API is open.
Onboarding
8 energy brands
They connect to the same rails. Per connection they fetch the final amount and put it on their bill.
Next
Every bill in the Netherlands
Every home charger with a MID meter earns ERE. Every supplier can connect to the same rails. One standard, not a scheme per supplier.

On the same rails

Let your customers share their charger

With Joulo Share, your customer lets neighbours, family and friends charge. The guest pays nothing, and your customer earns the ERE on what they charge. It runs on the same connection, so you build nothing extra.

Joulo Share for energy suppliers

The market

Demand grows every year

Fuel suppliers must cut their emissions further every year. They prove it with ERE. Home chargers produce those ERE. Your customers, in other words.

14.4%

annual obligation for fuel suppliers in 2026

28.4%

the same obligation in 2030

ERE we have sold so far, in 6 sales

You own the bill.We build the rails.

Our mission is to accelerate the transition to electric driving. An electric car only feels cheaper once your customer sees it: on the bill where they pay for their energy.