It Takes 2.8 Acres of Land to Generate 1GWh of Solar Energy Per Year, Says NREL
The Energy Department’s National Renewable Energy Laboratory (NREL) has published a report on the land use requirements of solar power plants based on actual land-use practices from existing solar facilities.
The report, Land-use Requirements for Solar Power Plants in the United States, shows results from data gathered from 72 percent of the solar power plants installed or under construction in the United States. Among the findings:
- A large fixed tilt photovoltaic plant that generates 1 GWh per year requires, on average, 2.8 acres for the solar panels. This means that a solar power plant that provides all of the electricity for 1,000 homes would require 32 acres of land.
- Small single-axis PV systems require on average 2.9 acres per annual GWh â€“ or 3.8 acres when considering all unused area that falls inside the project boundary.
- Concentrating solar power plants require on average 2.7 acres for solar collectors and other equipment per annual GWh; 3.5 acres for all land enclosed within the project boundary.
By the third quarter of 2012, the United States had deployed more than 2.1 GW of utility-scale solar generation capacity. Another 4.6 GW was under construction.
The report authors found that many of the solar land-use ranges and estimates used in anecdotal literature are very close to actual solar land use requirements. These land-use estimates can also be compared with other energy-production land uses. For example, a study by Vasilis Fthenakis and Hung Chul Kim of Columbia University (2009) found that, on a life-cycle electricity-output basis – including direct and indirect land transformation – utility-scale PV in the Southwest requires less land than the average US power plant using surface-mined coal.
A previous NREL report, “Land-use Requirements and the Per-capita Solar Footprint for Photovoltaic Generation in the United States,” had estimated that if solar energy was to meet 100 percent of all electricity demand in the US, it would take up 0.6 percent of the total area in the country.
- 2015 Environmental Leader Product & Project Awards
- Gartner Magic Quadrant
- Increase the Value of Demand Response Through Automation
- Improve Your Company's Environment and Energy Performance
- Unlocking the Value of Energy & Operational Data
- Combined Heat and Power
- The Future of Operational Risk Management: The Oil & Gas and Chemicals Approach
- Let's Do The Math for DR
- Solar Request for Proposal (RFP) Guide
- Best Practices in Electricity Procurement
- Connected Buildings, Connected People: A Look to the Future
- Cut Costs and Improve Facility Operations with Energy Data
- Energy Procurement Strategies for Winter 2014 and 2015
- Energy Efficiency Requires Engineering Efficiency
- Integrated Building Optimization: A Crucial Convergence of Demand-side and Supply-Side Energy Management Strategies