PowerCast: September Power Market Recap - volatility, wind, BM shifts

Monthly market update from EDF Wholesale Market Services. Rachel is joined by analysts Robbie Auld and Bhanu Duggal to unpack September’s UK power markets: stronger wind, deeper day-ahead dips, and what it meant for batteries.

What we cover

Prices and volatility: lower averages on strong wind, deeper negative periods, and wider wholesale spreads for batteries.

BM activity: record daily battery offers, regional patterns, and interconnector outages shaping dispatch.

Rule changes: how the ABSVD treatment shift and non-BMU access to Quick Reserve from 3 September change strategies.

Ancillary services: knock-on effects across DR, DC, and DM as competition and pricing rebalance.

Battery revenues: highlights from our Battery League tables and where value showed up.

Winter outlook: NESO’s latest view on margins and what a windy winter could mean for spreads.

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