Mill Group has invested in and supports Green Energy Sustainable Solutions, a company specialising in roof mounted or ground mounted solar PV electricity generation systems for the owners of commercial property, buildings, car parks and land in the UK. The largest installations developed by the team include the BMW Group’s MINI manufacturing plant in Cowley, Oxford and another at Lyreco’s main UK distribution centre in Telford which, with its innovative battery storage system, is one of the most advanced in the country.