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sonnen GmbH | March 26, 2024

sonnen starts its new Virtual Power Plant in Sweden

Following several months of testing in households, sonnen received the necessary approvals from Svenska Kraftnät for starting its Virtual Power Plant (VPP). Homeowners equipped with a sonnenBatterie can now benefit from solar power for their own energy needs, while also supporting the stability of the national grid.

Wildpoldsried, March 26th, 2024 – sonnen, one of the world’s technology leaders for smart and digital connected energy storage, today announced the start of its Virtual Power Plant in Sweden. As a precondition, sonnen has been rigorously testing the seamless integration with the national grid with 35 distributed households for a number of months. 

sonnen received approval to run the new VPP from Svenska Kraftnät, the Transmission Service Operator (TSO), which is responsible for the reliability of energy supply across Sweden.

sonnen's technology expands the classic use of a storage system: A household can use its PV system and sonnenBatterie for self-consumption of clean energy at home. Simultaneously, the storage system is interconnected with other residential storage systems to form a large virtual battery. That battery network stands ready to stabilise the grid in the event of grid fluctuations, that could cause a disruption in the power supply to homes across Sweden. 

With this configuration, households unleash the full potential of their battery system and save electricity costs. Even during times with low solar production, such as during winter, their battery system now holds an additional value by supporting the grid.

“We’re pleased to introduce our sonnen Virtual Power Plant (sonnenVPP) to the Swedish market which enables households to take the next step in the energy transition. Adding grid stabilization capabilities to a residential storage system is a win win situation for the household and grid stability. We are offering a proven technology that is being used in many countries worldwide for years now and we’re very happy to make it accessible to our customers in Sweden”, says Wenzel Brühl, VP Growth Markets at sonnen. He continued “this launch marks the beginning of sonnen’s entry into the Nordics Energy Service market and underscores our commitment to forging new partnerships.” 

Virtual Power Plants (VPPs) play a vital role in the energy transition. As more and more renewable energy capacity continues to expand within the energy system, power grids are increasingly becoming the bottleneck for integrating these energy sources and accommodating the growing numbers of consumers, including those who use EVs or heat pumps. VPPs represent a digital solution to maintain the balance between supply and demand of fluctuating energy sources by providing power grids the flexibility they need to remain stable. By leveraging already existing batteries or EVs for grid balancing, VPPs can also reduce the need for additional investments in grid infrastructure or large-scale storage systems.

Note to editors

sonnen is a pioneer in VPP technology, and is already running similar projects  in countries like Germany, the US, Australia, and Italy. The sonnenVPP can adapt flexibly to the requirements of different countries and different grid services. In Germany, for instance, sonnen is offering the balancing of power in the energy grid, also known as Frequency Containment Reserve (FCR). This is a more carbon friendly alternative to using fossil-fuelled power plants for that service that is essential to delivering energy to homes without disruptions. Furthermore, it enables homeowners to participate in the wholesale energy market, known as Intraday trading, where energy is bought at a lower price and sold at higher prices. Both of these services offered by sonnen produce a financial benefit to sonnenBatterie owners in the sonnenVPP by lowering their monthly energy bills.


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