Fisker, which recently won approval for $528.7 million in government loans to develop plug-ins, expects to spend another $175 million to refurbish the facility before production of next-generation hybrids begins in late 2012.
Fisker expects Project NINA will create or support 2,000 factory jobs and more than 3,000 vendor and supplier jobs by 2014, with full production capacity of between 75,000 and 100,000 vehicles per year. More than half the cars will be exported, the largest percentage of any domestic manufacturer.
"This is a major step toward establishing America as a leader of advanced vehicle technology," said CEO Henrik Fisker, who described the production of electric hybrids as part of "the most dramatic change in the car industry ever."
"It's important for America that we take the lead in this new technology," he said.
Vice President Joe Biden was among those on hand to announce a new lease on life for the GM plant, which produced the Saturn Sky and Pontiac Solstice roadsters, as well as an Opel version that was exported to Europe, before closing this summer.
"I refuse to believe that we will not once again lead the entire world in the manufacturing of automobiles," Biden told a crowd of more than 1,000, including scores of union workers. "This factory in Delaware, and the industry, are going to get back up off the mat."
The vehicles to be built in Delaware under Fisker's Project NINA will cost about $40,000 after federal tax credits. They will be able to run mainly on electricity for short trips and a combination of electricity and gasoline for longer ones.
The Wilmington assembly plant, built in 1947, churned out more than 8.5 million cars. It employed more than 5,000 workers in the mid-1980s but ended production with a work force of only about 450 hourly workers.
"This is a great day for three reasons: job, jobs, jobs," said U.S. Sen. Ted Kaufman, D-Del., who replaced Biden in the U.S. Senate.
Fisker officials said the Wilmington site was selected for its size, production capacity, modern paint facilities, access to ports and rail lines and skilled work force.
Mike Hicks, 51, who worked for 32 years in the plant's paint department, was heartened by the news that cars will be built there once again.
"We have a good work force here, and it's always been a top quality plant in General Motors," Hicks said. "I'm glad they're giving us another chance to show what we can do."
It was not immediately clear whether former GM workers would be given priority status when Fisker begins hiring. Fisker spokesman Russell Datz said that decision likely will be made by union leaders, but Dave Myers, president of United Autoworkers Local 435, did not immediately return a telephone message Tuesday.
U.S. Sens. Benjamin Cardin and Barbara Mikulski, both Maryland Democrats, said the reopening of the plant will preserve 500 jobs for Maryland residents who worked at the facility.
Jim Hoffa, president of the International Brotherhood of Teamsters, welcomed the reopening of the auto plant.
"By rehiring laid-off workers, the White House and the company are showing a commitment to reinvesting in our national infrastructure," he said in a prepared statement.
Fisker told reporters that his company will demonstrate to consumers in the U.S. and overseas that electric cars can be powerful and sexy, and needn't be defined by dull styling and "range anxiety," about limited mileage between charges.
But energy efficiency is likely to remain a key selling point. Fisker noted that owners of Project NINA cars who drive 50 miles or less each day could rely almost entirely on electricity and might have to fill up the gasoline tank only once a year, an idea that could hit home with European drivers paying the equivalent of $6 to $8 for a gallon of gas.
"We're designing our cars for the world market," he said.