Octopus Energy, a renewable energy group, completed the acquisition of Zestec Renewable Energy, a solar developer and asset manager. Financial terms were not disclosed. “There’s a significant untapped opportunity in the UK to generate more cheap green power from businesses' rooftops. This space is fast-growing and it’ll help bring more energy security and lower energy bills, all while allowing companies to reduce their carbon emissions,” Zoisa North-Bond, Octopus Energy Generation CEO.