Sympower bets EU market rules open grid balancing to flexible factories; €21.3M Series B1

Sympower was founded in Amsterdam in 2015 by Simon Bushell to sell demand-side flexibility: it aggregates the electricity consumption of factories, pumps, batteries and other industrial assets, then bids that flexibility into national balancing markets. Grid operators pay for the right to switch assets off or on within seconds; Sympower shares that revenue with its customers.

The company's bet was that European regulation would force member states to open balancing markets to aggregated demand — not just generators. It built its playbook in mature markets like Sweden and Finland, then exported it: from 2020 it worked with Greece's TSO ADMIE on market design, and when Greece's balancing markets opened in 2022 Sympower was the first independent aggregator to go live, with 37MW of industrial capacity and over 1GW of flexibility across Europe.

Capital followed the market openings: €22M in 2022 led by Activate Capital, then an oversubscribed €21.3M Series B1 in November 2024 led by Spain's A&G Energy Transition Tech Fund with direct investment from the European Investment Fund, taking the managed portfolio beyond 2GW and funding battery-storage services and M&A.

The EU's electricity market-design reform (Regulation (EU) 2024/1747) entered into force on 16 July 2024, making flexibility needs and national objectives for non-fossil flexibility a permanent part of national market design. That is exactly the regulatory opening Sympower was built for — though implementation across member states remains slow and uneven.