Ranging in size from 7MW to 24MW, the operating solar PV plants have a total peak power capacity of 64MW.
Anesco developed and constructed four of the five assets while as 24MW Stowbridge project was developed by AGR Renewables and constructed by Hanwha QCells. Baiju Devani and James Durnall led on the transaction for Ingenious.
Ingenious Clean Energy managing director Sebastian Speight said: "We are very pleased to complete the successful sale of our operating solar portfolio to Magnetar Solar.
"With this transaction now complete, we can now focus on our expanding activities in developing, constructing and acquiring further renewable generation assets."
Magnetar Europe fixed income business head Alan Shaffran said: "The government determined that solar energy needs to be a significant component of the UK’s mix of energy sources, and it has developed a strong market to support that goal.
"We’re excited about the opportunity to invest in the UK market, adding to our solar portfolio. We view this business as an attractive source of stable returns."