You can now buy panels that plug into electrical outlets, but there are some important safety issues to consider when picking and installing a system.

© Patrick Junker for The New York Times

You can now buy panels that plug into electrical outlets, but there are some important safety issues to consider when picking and installing a system.

Tesla, Sunrun and Renew Home plan to tap solar panels, batteries, thermostats and other devices installed in millions of homes to meet the energy demands of artificial intelligence.

© Collin Chappelle for The New York Times

Tesla, Sunrun and Renew Home plan to tap solar panels, batteries, thermostats and other devices installed in millions of homes to meet the energy demands of artificial intelligence.