Offshore Wind Accelerator: Smart Battery STATCOM (BAT-STAT)

Calling for entries from companies and consortia interested to undertake a study to investigate the merit of adding battery energy storage to wind farm STATCOMs while incorporating intelligent control to enable participation in ancillary service markets.

The main objectives of this work are to:

  • Detail assessment of the current capability of existing STATCOM and battery energy storage systems in participating in the ancillary service market. 
  • Determine which ancillary services are best suited to be offered by a Smart Battery STATCOM and the economic benefit.
  • Engage with a range of stakeholders particularly TSOs to ensure technology acceptance. 
  • Assess potential control concepts and how might services be combined to offer benefit to TSOs. The project relies on TSO acceptance so engagement is critical.
  • Assess additional/secondary benefits including oversizing units and the possibility to utilise the Smart Battery STATCOM for substation back up supplies.
  • Identify any regulatory and technical barriers and to develop a roadmap to ensure these are overcome to enable effective implementation of the Smart Battery STATCOM. 

For further details, please see the relevant documents below.

The deadline for clarification questions has passed. Responses to clarification questions received are posted below.

The closing date to receive tender submissions is 13:00 GMT Wednesday 28 October.

All clarification questions and tender submissions should be sent electronically, by their respective deadlines, to and

Learn more about the Offshore Wind Accelerator