While PV modules and other hardware costs have dropped significantly over recent years, non-hardware soft costs have also fallen, but not nearly as sharply.
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Looking at 4 variable generation technologies (wind, single-axis tracking PV, CSP with no storage, & CSP with thermal energy storage), the authors look at the benefits of mitigation measures.
The National Renewable Energy Laboratory releases their new report "Comparing Photovoltaic (PV) Costs and Deployment Drivers in the Japanese and U.S. Residential and Commercial Markets".
The National Renewable Energy Laboratory (NREL) routinely estimates the technical potential of specific renewable electricity generation technologies.