Mitie expands battery energy storage and electrical engineering capabilities with addition of former G2 energy team, learn more here

leading the way in battery energy storage

With the significant growth in the BESS sector, G2 Energy have established themselves as the sector leading ICP & BoP contractor. In 2017, G2 Energy connected the very first UK large scale BESS projects at Glassenbury (40MW) and Cleater (10MW), under the first National Grid EFR contracts.
Since those first projects, G2 have now completed over 20 fully operational BESS developments, with circa 700MWhr of BESS capacity connected to the grid – this represents around 35% of the UK’s operational BESS sites.

G2 are also currently contracted on a further 21 development sites with a further 2GWhr of battery storage to be connected to the grid by the end of Oct 2023 (as at Sept 2022).


Representing around 35-40% market share of the current BESS projects under construction confirming G2’s position as the market leading ICP & BoP contractor.

Up to
We can offer full EPC wrap, including the provision of the full battery system, for projects up to 20MW capacity.

If you are considering a Battery Storage scheme, G2 Energy can assist in a number of ways;

  • General layout and planning drawings
  • DNO grid connections up to 132kV & National Grid connections up to 400kV
  • Electrical balance of plant
  • Electrical design, supply and installation, including switchgear, cable infrastructure, and Earthing systems
  • Civil design and construction works, including Substation works up to 400kV
  • Long term Operations and Maintenance contracts
  • Containerised Substations, which are designed and built in our own Warehouse in Milton Keynes
  • Experienced, ex-DNO employed Design Engineers, Project Managers and SAPs
  • EPC Works for projects up to 20MW