I recently gave a talk at the annual convention of Economics for Energy, a Madrid-based energy think-tank. Some interesting numbers on the growth of renewables were presented by Bloomberg New Energy Finance -- massive growth in China (and of course solar in Europe. We'll pay later through our energy bills, but nobdoy seems to realize that...). Resi PV is now at parity at many countries, which may lead to even faster diffusion. My Berkeley "colleague" Max Aufhammer presented some very interesting stats on the effects of increasing temperatures on energy demand in California -- expect an exponential increase in energy consumption from cooling residential and commercial buildings. (Being from Europe, I have no doubts about the heat-up of the earth.)
The most recent Journal of Economic Perspectives has a whole section on energy. Papers can be downloaded for free, certainly worth reading some. Ok, it's academic, but the abstract usually tells the story... Last, this is a very cool paper on economic development and night lights -- using aerial pictures the authors relate the intensity of night light to economic prosperity, quite innovative (Download Henderson et al. - Bright Lights).
Of course, writing about other people's work is a smart way to cover up my own lack of productivity... Well, Matt Kahn and I have finally finished our project on commercial building electricity consumption (results are quite interesting indeed), but we're waiting for a sign-off from the data provider. I also revised a couple of existing papers on energy literacy of private consumers, the economic implications of energy efficiency labels in the European office market, and the value of the BREEAM label in the UK.