Forget about maintenance work, power supplies have not kept up with demand. In fact, power supplies are dwindling in the U.S.. San Onofre is permanently offline in southern CA, which was 20% of San Diego's power. After the disaster in Japan, nuclear power will not be increased in the U.S.. Our nuclear plants are all aging and there is no alternative to replace their loss of power in the near future. Coal plants are being shut down across the country do to new E.P.A. regulations and the companies that can afford to are switching to natural gas. The companies that can't afford to switch are going out of business and not being replaced. Wind generators are being run at reduced speeds out of environmental concerns over the birds. They aren't being allowed to run at a rate at which investors get a return on investment. That means electric rates go up and the future investment in wind energy is blown. Solar power is getting cheaper but after paying for the inverter and permits, it still costs 10s of thousands of dollars to power a home. Hydroelectric is on the decline because the entire country is in a drought. San Francisco will be voting this year on whether or not to recycle the water from Hetch Hetchy, a valley next to Yosemite that will soon be drained. This is not only their water supply, but 1% of California's power comes from Hetch Hetchy's hydroelectric dam. That will put a drain on power across the state.