Business Green: In a move bound to be interpreted in some quarters as symbolic of the company’s evolving low carbon energy strategy, oil giant Chevron announced yesterday that it is to use one of its former refineries in California to host a major new research project to assess the effectiveness of competing next generation solar technologies. The company said its new Project Brightfield research programme would be sited at its former refinery in Bakersfield, California, and would aim to evaluate the …