Where does the knowledge from renewable energy go to?
Using data on citations of patents in renewable energy, new research unravels the technological fields that benefit from knowledge developed in storage, solar, wind, marine, hydropower, geothermal, waste and biomass energy technologies.
The research finds significant differences across the various technologies. While wind technologies mainly find applications within their own technological field, a large share of innovations in solar energy and storage technologies find applications outside the field of power generation (external technology spillovers), suggesting that solar technologies are more general and, therefore, may have a higher value for society.
Noailly, J. and V. Shestalova (2013) Knowledge spillovers from renewable energy technologies, Lessons from patent citations, CIES Research Paper no. 22. 2013.