San Francisco Chronicle: President Obama announced $2.3 billion in tax credits Friday for 183 ventures to build advanced batteries, wind turbines and other “clean energy technology” nationwide, including projects in the Bay Area. The tax credits, which are funded by the $787 billion economic stimulus package enacted in February, are designed to defray up to 30 percent of the cost of new investments in manufacturing facilities to produce clean energy products. “Building a robust clean energy sector is …