"Wow. That's an incredible number," said Jonathan Edwards, vice president of SmartPower, a national nonprofit marketing firm that promotes renewable energy.
"There is no question that Swarthmore is a poster child for that region in terms of all they do with clean energy."
Blaine Collison, director of the EPA's Green Power Partnership, which sponsored the challenge, said, "Every time I look at Swarthmore, I think, 'We want more of that.' "
Those involved acknowledge that Swarthmore's well-educated and relatively wealthy residents might be an easy sell on clean power. Census data show that 77.2 percent of Swarthmore adults have a bachelor's degree or higher. More than half the households have incomes that exceed $100,000.
Then again, Phil Coleman, an energy analyst at the Department of Energy's Lawrence Berkeley National Research Lab in California (he telecommutes), recalls that in an early organizing meeting, one person challenged, "If we can't do it, who the hell can?"
The race was on.
Swarthmore has a history of environmental actions, its leaders note. It adopted recycling and banned leaf-burning long before most.
In the late 1990s, wind power wasn't on many people's radars. But it was for Thurm Brendlinger, a longtime borough resident who was a wind-power advocate with the Clean Air Council. He started making suggestions.
In 2002, Swarthmore laid claim to being the first municipality in the state to make a pure Pennsylvania-generated wind purchase.
It wasn't a lot of power - only enough to power the traffic lights - but it was a statement, Borough Manager Jane Billings said.