Trio | 17,468 followers on LinkedIn. Impact. Together. | We are Trio – built from Edison Energy, Alfa Energy, and Altenex Energy. Trio is a global sustainability and energy advisory company that helps large commercial, industrial and institutional organizations navigate the clean energy transition. A subsidiary of Edison International, Trio provides integrated strategy and implementation services – in sustainability, renewables, energy procurement, conventional supply, energy optimization and transportation electrification – to help the world’s largest organizations meet their strategic, financial and sustainability goals.