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Huntington, New York, wanted to make sure changes saved residents money.

The city is converting 58,000 traffic signals, which is just one of the city's energy efficiency targets.

St. Johns County, Florida is tackling its traffic-timing problem with a little help from an Energy Department Energy Efficiency and Conservation Block grant. The county will use the grant to improve traffic flow by re-synchronizing signals at five major road segments. In total, 23 traffic signals will be retimed and synchronized, resulting in lower fuel consumption, shorter travel times, increased travel speed, less stopping and less engine idling.

Every year, thousands of people attend events at the Ulster County Fairgrounds in New York State. This year visitors to the fairgrounds will get a first-hand look at two solar energy installations that are saving Ulster County taxpayers money and supporting local companies that manufacture green technologies.

Few start-ups are founded by retirement-aged scientists – and even fewer have Google.org backing. That's the unique position of Potter Drilling, a start-up founded in 2004 by a pioneering now-90-year-old and his son.

It is back to school time for the 513 students at Ring Factory Elementary School in Harford County, Md. And there's something new and cool -- beyond clothes and backpacks -- for these kids. The latest addition is the school's new ENERGY STAR-rated "cool" roof, funded in part through the Recovery Act.

The Arizona State Energy Program awarded Recovery Act funds to 14 non-profit organizations throughout the state for energy projects. Watch video of how one nonprofit and a local company are making use of it.

The parking lot to the county courthouse and nursing home facility in Strafford County, New Hampshire needed new lights. And thanks to an Energy Efficiency and Conservation Block Grant from the Energy Department, Strafford got what it needed and more.

The average American throws away more than 900 pounds of trash every year, and as the organic waste degrades it produces methane gas. Some landfills are now exploring ways to use it rather than venting the gas directly into the atmosphere.

The Secretary visited the Montana Economic Development, which highlighted several energy projects around the state boosted by the Recovery Act.