NYT: It`s no news to most people that renewable energy sources like wind and solar power have their off-moments, or off-days. A potential remedy was just signed into law by Gov. Arnold Schwarzenegger of California, whose governorship has long had a greenish tinge. The state will now require utilities (first, investor-owned utilities, and later, publicly owned ones) to have storage capacity on hand that can quickly be put into use when the wind dies down. As a technological and …