President Barack Obama's economic-stimulus program that passed Congress in February, despite being too small and too loaded with tax breaks for corporations, is among the most progressive pieces of economic legislation since the 1960s. The green-investment features alone stand as a major advance toward building a clean-energy economy. The total amount of clean-energy spending in the measure ranges between $50 billion and $140 billion, depending on how one counts the patchwork of direct public spending and private-sector incentives.