Sustainable generated power is not always available in the same quantity. The wind doesn’t always blow, and the Sun sometimes disappears behind a cloud. The varying supply of renewable energy is a challenge in the way to sustainability. With the use of blockchain technology, TenneT manages to steer the variable supply of sustainable energy, so there is always sustainable processed energy available.

Storing power in batteries

TenneT, VANDEBRON and IBM have invented a clever solution with blockchain technology and batteries. A group of large consumers temporarily stores power in the battery of their stationary car, or their battery at home. At times with a strong wind or a lot of sun the surplus of generated energy is stored in the unused batteries. In this way, there is no need to waste energy. The energy can be deployed later, at times when there is little sun or wind. In this way, less fossil energy needs to be produced to compensate for shortages. With this solution, the companies have won the ICT Environmental award.

The ICT Environmental Award is a prize that is awarded annually to ICT projects with a significant positive impact on the environment. For this prize they look at smart, innovative solutions for energy savings or the recovery of raw materials. The jury is able to discuss the cooperation between the parties in order to increase the flexibility on the net using blockchain. They see great potential for scaling up the solution and other clever applications that will make the energy transition possible.


In the pilot VANDEBRON uses the battery capacity of electric cars or home batteries in a clever way. A smart algorithm determines when a car battery is loaded or not. At times of a surplus of renewable energy, the battery starts with drawers, and at times of a shortage the battery energy returns to the grid. By doing this on a large scale, the balance on the net is guaranteed. VANDEBRON facilitates the service for its customers, who receive compensation for this. This takes into account the private use of the car, which means that car owners do not have to make concessions to the desired use of their car.


As Transmission System Operator (TSO) TenneT is responsible for the balance of the Dutch energy grid. In order to guarantee the supply of electricity, demand and supply must be balanced 24 hours a day, 7 days a week. The fluctuating availability of renewable energy increases the volatility on the net. In addition, it is expected that ever more traditional fossil power stations will close in the future. They will therefore be less able to compensate the peaks and downs on the net. TenneT believes that a large number of smaller, decentralised batteries can provide a solution. It therefore examines whether blockchain technology can ensure that the number of players on the market can be increased, so that better price formation can be achieved. This would make TenneT less dependent on fossil power plants.