Gov. Jerry Brown cleared the way for California to link its carbon cap-and-trade market to a nearly identical one in the Canadian province of Quebec. \tIn April 8 findings, Brown declared that Quebec\u2019s program is substantially similar and equally enforceable to California\u2019s, such that linking the two carbon markets will not compromise that state\u2019s greenhouse gas program. He also found that California will incur no liability in linking with Quebec. \tBrown\u2019s action clears the way for the California Air Resources Board to adopt amendments to its cap-and-trade rules to formally link the state\u2019s program with Quebec\u2019s beginning in 2014. Action is set for April 19. * * * * * \tBig old cars die hard in the face of more fuel efficient models that are smaller, according to University of California, Berkeley, economics professor Lucas Davis. \tCalifornia and U.S. standards seeking to put a squeeze on gasoline consumption to cut greenhouse gas emissions are bringing smaller, lighter cars to the market\u2014many employing electric technologies\u2014but it could be that those who have preferred large cars in the past don\u2019t want them. Data show they prefer instead to drive their old fuel hogs into the ground. \tData analyzed by Davis show that owners of smaller, more fuel-efficient cars have been more likely to scrap their vehicles for newer fuel-efficient models than big car owners, who have been driving their cars longer. \tWith plenty of parts on hand to keep older models running, the net effect could be that the mileage standards calling for new cars on average to get 41.7 miles\/gallon by 2020 and 54.5 miles\/gallon by 2025 may not be as effective as originally thought in reducing greenhouse gases. * * * * * \tThe California Energy Commission is proposing changes to its rules for carrying out SB 1368. That law requires California utilities not to renew their interests in out-of-state coal power plants after they expire. The CEC is proposing the changes after weighing a request by environmental groups to tighten up standards. The move is directed at investments by municipal utilities that could prolong coal plants\u2019 life beyond existing expiration dates. \tUnder the proposed changes, public utilities would have to provide notice to those on the commission\u2019s climate change service list of any investment totaling $2.5 million or more. In addition, munis would have to file reports each year outlining expected investments over the next 12 months. These requirements are aimed at making it easier for the environmental groups to monitor the investments and intervene at municipal utilities. \tThe hitch is that the requirements would not begin until 2014 and would apply then only to munis that have interests stretching at least five years ahead. Currently, this applies to just three coal plants\u2014Navajo, San Juan, and Intermountain\u2014and munis, like the Los Angeles Department of Water & Power, are working to end their interests in the facilities as early as possible. If they are successful, it could make the proposed rules all but moot. \tThe commission requests comments on the proposal.