New Los Angeles Department of Water & Power general manager David Nahai says he is committed to greening the department, including meeting a 20 percent renewable energy target by 2010. Continued dependence on coal and natural gas \u201cis not tenable\u201d under new laws passed by the state, Nahai said. He thinks that LADWP can integrate renewable energy into its portfolio and cut greenhouse gas emissions in an affordable way. \u201cThe comfort I would offer at this time is that going from 3 to 8 percent [renewable energy] has not caused an explosion of rates.\u201d However, Nahai is wary of the department being included in a cap-and-trade program for greenhouse gas emissions and plans to \u201cinsert himself\u201d into discussions at the state level about how to carry out California\u2019s climate protection law. \u201cThe point of AB 32 was not to create a trading market,\u201d observed Nahai. \u201cIt was to reduce emissions.\u201d Cap-and-trade, on the other hand, he said, has the potential to not just reduce emissions but transfer wealth among players in the market. AB 32 is the state\u2019s law mandating reductions in greenhouse gases, but it did not mandate how to achieve those cuts, either with a trading system or other through other avenues. To cut greenhouse gas emissions to the state\u2019s 2020 goal and meet Villaraigosa\u2019s ultimate goal of a 35 percent cut for the city by 2030, Nahai told Circuit the department would have to develop large-scale and often distant wind, solar, and geothermal projects. Putting solar rooftops throughout the city at most could meet 10 percent of the department\u2019s power needs, he said, although the muni plans to push for distributed photovoltaic generation too. Other concepts for local renewable energy projects include using biosolids and trash as feedstocks.