EQT Infrastructure-backed Statera Energy is preparing the the selldown of a 49% stake in a 1.9 GW chunk of its UK BESS and gas peaker portfolio.

The UK BESS and flexgen developer and operator is understood to have mandated Macquarie Capital to advise on the “Project Gemini” process, with teasers on the proposed transaction now circulating in the market.

The 1.9 GW portfolio comprises seven BESS assets totalling 1,280 MW / 2,410 MWh, six of which are operational and one of which is under construction, and four gas peaker plants totalling 600 MW, three of which are operational and one of which is under construction.

The BESS portfolio includes:

Pelham, 50 MW / 50 MWh (COD 2017)

Creyke Becke, 50 MW / 50 MWh (COD 2018)

Minety South 1, 50 MW / 50 MWh (COD 2022)

Minety South 2, 50 MW / 50 MWh (COD 2022)

Dollymans, 100 MW / 200 MWh (COD 2023)

Thurrock, 300 MW / 600 MWh (COD 2025)

Carrington, 680 MW 1,360 MWh (under construction, COD 2027)

The gas peakers comprise:

Creyke Beck, 50 MW / 50 MWh (COD 2017)

Saltholme North, 50 MW / 50 MWh (COD 2021)

Saltholme South, 50 MW / 50 MWh (under construction, COD 2021)

Thurrock Power, 400 MW (under construction, COD 2026)

Statera has to date raised over GBP 750m in project finance for the assets.

The current bidding timeline is not yet known, although a first round of bidding is forecast to run through the first part of Q2 2026.

EQT Infrastructure declined to comment.