Matrix Renewables, a renewable energy platform, completed the acquisition of a 4.6 GW portfolio of utility-scale solar energy projects from SolarStone Partners, a renewable energy development firm. Financial terms were not disclosed. “Matrix is very excited to partner with SolarStone in the further development of this portfolio and looks forward to our ongoing collaboration on new opportunities across the country," Cindy Tindell, Matrix Renewables Managing Director and Head of US.