"President Barack Obama will announce the largest investment of economic stimulus funds in clean energy during a visit to Florida, an Obama administration official said on Monday.

The announcement will involve the smart grid, which will help bring energy from clean domestic sources to consumers in 49 states and help build a strong and more reliable electricity grid, the official said.

Obama is to travel to Arcadia, Florida, on Tuesday to make the speech and take a tour of the DeSoto Next Generation Solar Energy Center.

Separately, U.S. Vice President Joe Biden plans on Tuesday to visit a closed General Motors plant in Wilmington, Delaware, where he is expected to announce that it will be reopened for the building of plug-in hybrid electric cars."

Patricia Zengerle reports for Reuters October 26, 2009. [2]