Opening of Florida solar-energy facility

On Tuesday, President Barack Obama promoted the smart grid and renewable energy at the opening of Florida Power & Light's DeSoto Next Generation Solar Energy Center (shown). The facility consists of more than 90,500 solar panels, making it the largest solar-photovoltaic plant in the country and, according to FPL, its annual estimated generation is about 42,000 megawatt hours.

The president outlined how the federal government is making a $3.4 billion investment from Recovery Act funds to modernize the country's electric grid with a goal of creating a more-reliable, more-efficient system. "But getting there will take a few more days like this one and more projects like this one," said the president. "And I have often said that the creation of such an economy is going to require nothing less than the sustained effort of an entire nation—an all-hands-on-deck approach similar to the mobilization that preceded World War II or the Apollo Project."

If you're interested in using solar power at your home, read our report on solar water heaters from the October 2009 issue of Consumer Reports and look for ongoing coverage of these devices on this blog, such as this testing update from earlier this month.—Daniel DiClerico | e-mail | Twitter | Forums | Facebook

Essential information: The president referred to World War II the other day, and it was during this era that George Löf undertook his first experiments with solar power. Löf, a solar innovator who died earlier this month at the age of 95, is credited with creating one of the earliest solar-heated homes in this country, according to his obituary in The Wall Street Journal. Löf's system consisted of a large glass roof panel that heated a pile of gravel in the basement, which in turn warmed the house.