The 15-year agreement covers the power generation capacity of 65MW, of which 23MW of capacity will be provided by four solar projects in Dorset, Devon and the Isle of Wight.
The remaining power will be procured from the projects to be developed within few years.
Commenting on the alliance, Low Carbon chief investment officer John Cole said that the agreement with SmartestEnergy would be a boost to green energy.
"We are growing and targetting 200MW of development this year. This deal with SmartestEnergy is great news we went with them because they were flexible and had a product that worked, apart from that they kept to their word and we had good chemistry," added Cole.
SmartestEnergy generation sales head Iain Robertson stated: "Banks are looking for greater security and the fact we are able to provide such long term deals on both the power generated and the ROC payments is helping projects secure the finance they need to proceed."
