WASHINGTON — An array of solar panels blanketing the roof of the White House is getting its day in the sun.

Technicians have finished installing the panels at the nation’s most famous address, capping a project that President Barack Obama hopes will send a clear signal that renewable energy is both feasible and environmentally shrewd.

Citing security and other concerns, the White House won’t say how many panels now encase the top of 1600 Pennsylvania Ave. or how much they cost. But the panels are expected to generate 6.3 kilowatts of solar power whenever the sun shines, the White House said, improving the building’s energy efficiency.

Obama seeks to use his personal example to spur American families and businesses to do more to reduce reliance on foreign energy and cut emissions blamed for global warming.

“Solar panels at the White House are a really important message that solar is here, we are doing it, we can do a lot more,” Energy Secretary Ernest Moniz said in a video released by the White House.