This post asks the provocative question whether solar PV is really market ready yet. It goes on to suggest that it might be counter-productive for the long term growth of the sector to push solar photovoltaic adoption rates through the use of government subsidies, making the point that this may in fact be slowing down the adoption of needed innovation and process improvement that should ultimately make renewable energy more affordable.
This post examines the case against subsidies for renewable energies recently made in the WSJ, which opined that renewable energy should focus on the small niche off grid market currently largely served by diesel generators where renewable energy has a clear advantage.
We’re doing a remodeling project which includes installing a new roof. Here in California, we get a lot of sun, so the impact of solar irradiance on solar heat gain is a major concern — either for A/C costs (and thus peak summer energy loads) or on comfort (for those of us who don’t have A/C). Thus, I’ve been looking into solar reflectivity and what has been called the “cool roofs“ movement. There is the Cool Roof Rating Council, “created in 1998 to develop accurate and credible methods for evaluating and labeling the solar reflectance and thermal emittance (radiative properties) of roofing products and to disseminate the information to all interested parties.”