Next Kraftwerke starts delivering aFRR grid reserves in Belgium

Published: 8. March 2021

Since January of 2021, Next Kraftwerke offers Automatic Frequency Restoration Reserve (aFRR) to the Belgian grid operator Elia through its fleet of networked decentralized units. Those units consist of different technologies, with CHPs being the most prominent. Leading up to the successful implementation of the Belgian aFRR pool’s operations, Next Kraftwerke went through the prequalification process of the Belgian transmission system operator Elia, to proof the ability of the networked units to deliver aFRR to the grid. When delivering aFRR reserve power, it is imperative to follow the TSO’s setpoint for the activation accurately. When one unit responds in a different way than expected, the Virtual Power Plant automatically compensates by adapting the setpoint for other units in the fleet. This way, the entire pool can deliver this crucial balancing product with higher accuracy than conventional large-scale power plants.

Next Kraftwerke is prequalifying more assets on an ongoing basis, to grow the the Belgian aFRR fleet further.

Start od delivery of aFRR (secondary reserves) in Belgium
Response of Next Kraftwerke’s Virtual Power Plant to downward aFRR activations on a typical day with a pool of CHPs.


Next Kraftwerke operates one of the biggest Virtual Power Plants in Europe. By utilizing the full potential of digitalization, the company networks thousands of energy-producing and energy-consuming units in the Virtual Power Plant “Next Pool”. Through its technology and trading, clients are able to produce and consume electricity when prices are best for them. By trading their aggregated power 24/7 on different energy spot markets the Virtual Power Plant also makes a substantial contribution to stabilizing the grid by smartly distributing the power generated and consumed by the individual units in times of peak load.