Mid Suffolk District Council has backed the first phase of plans to install solar panels on more than 2,100 council houses in a joint scheme with Babergh.
The £7million plan has identified 2,150 south facing properties within the two councils suitable for the panels.
Babergh District Council is making a decision on the scheme this afternoon.
Councillor Roy Barker, Mid Suffolk’s environment portfolio holder, said money earned from the solar panels would more than cover the cost of the scheme in 20 years.
He said: “What we are doing is investing to save in the long run.
“We are improving our housing stock, helping with rural poverty and helping our tenants.
“Electricity is always going to go up in price and we want to do whatever we can do to help people.
“It is a big scheme but we have to be positive in this world and sometimes make these big decisions. “Once you have the generation tariffs set up, the scheme pays for itself.”
Cllr Barker said he hoped Babergh would join Mid Suffolk in backing the plans.
“We want to help Suffolk become the greenest county,” he said.
“This scheme will save a massive amount of CO2.
“Babergh is deciding on the scheme this afternoon and I hope they will back it too.”