What Is Big Battery?

True Energy’s Big Battery solution is a way to become part of the distributed energy grid of the future. Help balance the grid while earning monetary rewards and lowering the need for expensive fossil fuel backup power plants.

What Is Big Battery?

True Energy’s Big Battery solution is a way to become part of the distributed energy grid of the future. Help balance the grid while earning monetary rewards and lowering the need for expensive fossil fuel backup power plants.

What Is Big Battery?

True Energy’s Big Battery solution is a way to become part of the distributed energy grid of the future. Help balance the grid while earning monetary rewards and lowering the need for expensive fossil fuel backup power plants.

Support The Energy Grid
Of The Future

Big Battery turns your and other owners’ electric cars into our common backup and support network for the power grid.

During times when demand outpaces production, True Energy can help balance the grid through switching charging of the connected fleet of electric vehicles on and off so that electricity producers can avoid starting expensive, fossil fuel-driven backup generators.

Charging is only on standby for short periods, typically up to a few minutes, and does not affect your vehicle’s charging or performance. Power is never sent from your vehicle’s battery out into the grid. Taking part in Big Battery is not only good for the grid and environment but also your economy. You can accumulate Cable Discount™ for taking part in Big Battery. The more you drive, the more discount you may be eligible to receive.

Read on below and check out the rest of our website to find out more.

How Do You Join The Big Battery?

First, download the True Energy App and complete the registration process. Furthermore, you need to own an electric vehicle capable of taking part in Big Battery. In Denmark, grid backup systems need to be fast and precise to ensure constant electricity delivery. It requires swift response times for the vehicles taking part in Big Battery. Right now, the following cars meet these response times: Tesla model, S, X, 3. We are continually developing our solutions and working on integrating more vehicle types.

To join Big Battery, the following conditions also apply:

  • You need to use the True Energy app to charge your electric car.
    The charging point behind your electricity meter (i.e. at home) must be on SmartCharge.
  • In the initial phase, True Energy primarily deliver Big Battery between midnight and 4 am. Your car must be ready to charge during this period to join Big Battery. Required Big Battery charging periods will change over time.
  • If your car is disconnected, or if power or communication fails or disconnects, while you are participating in Big Battery, the payment will be proportionally reduced.

What Is Cable DiscountTM?

Cable Discount™ is your cash payment for participating in True Energy’s Big Battery. Big Battery is our joint, coordinated effort to help balance the energy grid and minimise the use of expensive, environmentally damaging backup generators.

How is Cable Discount™ calculated?
The more you use your electric vehicle, the more Cable Discount™ you can get. Cable Discount™ is calculated according to how long your car participates during Big Battery periods.

Your car must, therefore, SmartCharge and be part of Big Battery in order to earn Cable Discount™.

We share the payment True Energy receives from energy producers and suppliers for supplying Big Battery with you and the other vehicle owners who participate.

Example Of Cable DiscountTM

Example of Cable Discount ™

An electric car consumes 17kWh of power every day, which equals approx. 25,000 km travelled per year.

The car is plugged in between midnight and 4 am.

The car participates in Big Battery at least every other night for 4 hours.

True Energy receives payment per kWh through the energy balancing market, corresponding to the average payment between September 2018 and February 2019.

In this example, you, the car owner, receive 400 KR. per car per year.

Please note that prices vary. True Energy cannot guarantee that the example above will match your situation.

Payment of Cable Discount ™

You can continuously see how much Cable Discount™ you have earned in the True Energy App.

To receive your Cable Discount™, you must be an electricity customer at one of our partners or True Energy. Cable Discount™ is realised as a discount on your electricity bill. It is calculated at the middle of the month in connection with billing. Once the discount is transferred to your electricity bill, it will be reset to zero in the app. However, you can still see how much you have earned in total in the app.

If you have earned Cable Discount™ but are not an electricity customer with one of our partners or True Energy, Cable Discount™ will be reset at the end of the month.