Published: 23 Feb 2021, 16:20 By: Deputy Editor Gresham House Energy Storage Fund's Wickham Market battery is one of just 400MW of storage currently playing into Dynamic Containment. Image: Gresham House. Batteries are uniquely placed to enter multiple revenue markets, with the wholesale market becoming increasingly interesting. In this morning’s Energy Storage Summit 2021 keynote discussion, What is the key for really making money from batteries?, the panel talked through the numerous routes available to battery energy storage currently. The growth in the ancillary market remains one of the biggest avenues for revenue, in particular in the UK, where “the balancing services market is very attractive at the moment because it’s undersubscribed” said Ben Guest, managing director at stock exchange listed dedicated investment fund Gresham House Energy Storage Fund.