First there’s uber investor Vinod Khosla with his burgeoning clean tech portfolio. Then father of the Ethernet, Bob Metcalfe joined the party. Now we have FON founder Martin Varvasky getting interested in solar farms. I guess with telecom operators deciding the fate of all telecom-related start-ups, the risks in green tech seem to be more acceptable. See GigaOM for Om’s take on telecom-to-energy investors.