Rooftop Solar Can Reduce Summer Electricity Peak Demand by More than 50 Percent

A new study by the Pecan Street Research Institute found that residential solar panel systems can cut electricity demand during peak summer hours by 58 percent.

The study used data gathered from Pecan Street’s demonstration project — an innovative living test lab that allows the research institute to provide original research on customer energy use, renewable energy integration and smart grid technology.

The study looked at how much solar power was being used in the homes versus being returned to the grid. It found that during peak hours, homes used 80 percent of the solar power generated on-site, while just 20 percent was sent back to the grid. Over the course of a full day, 64 percent of the solar power generated on-site was used in the home.

Overall, the study concluded that solar panel systems can be an effective peak demand reduction tool, especially during hot summer months when utilities are trying to keep up with energy consumption.

“These findings suggest that rooftop solar systems can produce large summer peak reductions that benefit utilities and customers alike without requiring customers to change their behavior or sacrifice comfort,” said Pecan Street CEO Brewster McCracken in the report’s press release.

During peak energy demand in the summer, the cost to provide electricity is extremely high and often unprofitable. By cutting summer peak demand more than 50 percent, solar panel systems offer benefits to the grid that could reduce costs for both utilities and their customers.

Continue reading: ThinkProgress » Climate

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