The projects, which are expected to generate around 1,000MW of power, will spread across four continents.
The projects include 450MW Neart na Gaoithe offshore wind farm in Scotland, 140MW Khobab and Loeriesfontein 2 wind farms, as well as 80MW Noupoort wind farm in South Africa.
The company also plans to construct 27MW San Manuel and 43MW wind farms, along with 100MW Pedernales solar PV farm in Chile, and 46MW Old Man 2 wind farm in Canada.
Mainstream Renewable Power chief executive Eddie O’Connor said the company is now entering a very intensive growth phase.
"We put almost 300 megawatts into construction last year and we have an even larger portfolio of late-stage projects ready to go into construction next year," Connor added.
