They also found that the 1 kW system without anti-dump was profitable, with its BPT being 4.57 years, The IRR was found to be 23.4% and the self-sufficiency rate (SSR) was estimated at 5.0%.

As Central Virginia braces for a looming "arctic blast," 8News is learning new details about Henrico County's plans to ...

A ‘Smart store’ system was set up in collaboration with ... and we also have more heat to sell,” Steffensen said. “We are self-sufficient here with heating and it's all heat that would ...