Yale Environment 360: U.S.-based BrightSource Energy has shelved its second major solar thermal project this year as the company and Pacific Gas and Electric terminated the utilitys contract to buy power generated by the plant in south-central California. In an email, a BrightSource spokesman said the $2.9 billion Hidden Hills project, which would have been built in Inyo County near the Nevada border, was suspended due to uncertainty around the timing of transmission upgrades, Bloomberg News reports, although regulators'...