The five-year contract is expected see Equans help Acis to make thousands of homes warmer and more energy efficient.
Under the plans, buildings will be refurbished with renewable technologies, insulation and low-carbon central heating. They will also get new kitchens and bathrooms, roofing, fencing and footpaths. A number of unused garages will be demolished.
Acis Group manages and maintains more than 7,000 affordable homes across Lincolnshire, Nottinghamshire and South Yorkshire.
The contract was secured through a competitive tender process via the EN:Procure framework.
Equans regional director Sean Corcoran said: “This contract is the perfect opportunity for us to combine our expertise in both regeneration and zero carbon technologies, to support our partners in their drive to make their homes more energy efficient, whilst also having a positive impact on thousands of residents.”
As previously reported, Equans is set to be taken over by Bouygues later this year. Bouygues has agreed in principle to pay Engie €7.1bn for Equans and the two French companies are now in exclusive negotiations.