Global status of clean energy innovation in 2020 – Clean Energy Innovation – Analysis
Patenting activity for renewable energy remains higher than at any time before around 2007 and patenting for batteries, particularly Li-ion, is a growth area (EPO and IEA, 2020). However, it is still a concern that the decline in patenting since 2011 has so far not been offset by patents in advanced biofuels, novel PV, geothermal, ocean or other renewables.