Advisory services relating to the use of energy; Advisory services relating to energy efficiency; Consultancy in the field of energy-saving; Electrical engineering services (design); Electrical research; Energy auditing; Energy use and conservation consultancy; Engineering design; Engineering services relating to decarbonisation of legacy power grids; Engineering services relating to electric power systems; Engineering services relating to power systems architecture Engineering testing; Preparation of engineering reports; Providing scientific information, advice and consultancy relating to net zero emissions; Research, engineering and technical consultancy for industry and government; Technical data analysis services