Danny was the CEO of New Energy Nexus from 2015 to 2024. NEX is a global platform organization for funds and incubators, with chapters in the USA, China, Indonesia, Vietnam, Thailand, the Philippines, Uganda, Australia and India. This included overseeing the CalSEED.fund of $25m for early-stage companies in the California economy and the $12m CalTestBed initiative with UCOP. He remains a part-time Venture Partner with the NEX Catalyst Fund in Singapore.

He also advises Australian-based growth capital firm, Wollemi, and others. Kennedy co-founded Sungevity in 2007, the company that created remote solar design, and Powerhouse, in Oakland, CA. He was an early backer of Mosaic in 2011, and remains on the Board of Powerhive, a solar mini-utility in Kenya. He was a founding Director of Sunergise, the solar-as-a-service business out of Fiji and EnergyLab Australia. He is an adviser to the company Solar Philippines. Kennedy authored Rooftop Revolution: in 2012. Prior to being an entrepreneur and investor he worked at Greenpeace and other NGOs on climate & energy since 1989.