Procurement specialist Fusion21 has advertised up to £1.5bn of retrofit and refurbishment work.
The body invited interest in a four-year decarbonisation framework covering homes and public buildings.
Up to 15 contractors will be appointed to the panel to deliver insulation, heating, air conditioning, roofing and a range of other works.
Lot 1 will cover residential properties and is valued at up to £1bn, while Lot 2 will be used for other buildings and is expected to be worth about half as much.
Domestic works will include solid wall, cavity and loft insulation as well as draught-proofing and air-tightness works.
Whole-house refurbishments will be carried out through the framework alongside installation of renewable energy systems such as air source heating.
Replacement jobs will include windows, doors, bathrooms and kitchens.
Companies must have a minimum turnover of £20m to be selected for the framework, along with specified levels of public, employer, professional and prod