Using tax credits, low-interest loans and grants, the Obama Administration plans to invest more than billion in electric vehicles, renewable energy and other clean technology — or “cleantech” — ventures by the end of next year, reports Bloomberg BusinessWeek magazine. Such huge, unprecedented government spending is also encouraging private capital to continue flowing into the sector, not least because many federal programs — which include rebates, grants and loan guarantees — require private matching funds. The most recent example of investor interest was Google’s announcement last week that it will spend 0 million on a transmission project to harvest electricity from wind farms off the mid-Atlantic coast. The project is expected to cost billion overall.…