Gore Street’s EU Fund acquires 390 MWh of BESS in Ireland

London-based Gore Street Capital’s European Union-focused fund has completed the acquisition of two ready-to-build battery energy storage projects in Ireland.

These are the first two acquisitions for the fund – known as the GS EU Fund -following its first close, reported by ESS News in Jan. 2026.

The two BESS projects in question are the 120 MW/240 MWh Kilmannock BESS and the 75 MW/150 MWh Mucklagh BESS.

Kilmannock was acquired in full from Gore Street Energy Storage Fund (GSF) and Mucklagh was acquired from majority owner GSF and its partner. GS EU now holds a 100% stake in both sites.

GS EU and GSF are managed by Gore Street Investment Management. GSF is a longer established fund listed on the London Stock Exchange with an extensive project portfolio spread across five electrical grids and comprising more than 1 GW of assets.

In Ireland, GSF’s portfolio includes the 50 MW Drumkee, 50 MW Mullavilly and the 30 MW Porterstown batteries.

The bulk of GFS’s asset portfolio is in the UK, and it includes a 200 MW Middleton BESS in pre-construction, the 57 MW Enderby BESS in Leicester, and several smaller operational batteries with some projects under 10 MW.

Besides the UK and Ireland, GSF is active in the United States and Germany with various small batteries either operational or under construction in Texas and Germany and the operational 200 MW/400 MWh Big Rock BESS in Imperial County, California.

The transactions for the two Irish BESS projects from GSF were managed carefully “on an arm’s length basis” and under “strict information barriers” according to a statement from Gore Street Capital in acknowledgement of the fact both funds are managed by Gore Street Investment Management. Valuations on the Irish projects were subject to independent third-party verification, the statement added.

The Kilmannock BESS is expected to reach commercial operations in Q1 2028, while Mucklagh’s date is scheduled in Q2 2028. Both have secured grid connections, land rights and planning permission. They also have the potential to be upgraded from two-hour to four-hour durations.

Commenting on the firm’s decision to pick Irish projects for its first GS EU acquisitions, Gore Street Capital’s CEO Alex O’Cinneide said that “After screening multiple opportunities Ireland stood out as an exciting market with attractive entry pricing, robust support for two-hour assets, and one of the highest levels of renewable energy penetration in Europe.”

The CEO also pointed to the team’s existing projects in Ireland, a total of 130 MW across three projects under GSF.

“The focus now turns to the development of the projects, while we continue to identify new opportunities to execute against the Fund’s mandate in the near future,” said O’Cinneide.

GS EU is targeting its second close in the final quarter of this year and a final close in Q1 2027. The fund is backed by the National Treasury Management Agency, a controller and manager of the Ireland Strategic Investment Fund, a key investor since the GS EU Fund’s first close.