A home battery backup system can keep essential appliances running during power outages, but choosing the right setup ...

Blackouts are rare where I live, so I cut my power to test how long the Delta Pro Ultra X could keep my home running.

Select an option below to continue reading this premium story. Already a Honolulu Star-Advertiser subscriber? Log in now to continue reading. In 2015, Hawaii pioneered a 100% renewable electricity ...

Lithium-ion batteries have quietly become the workhorses of the modern energy economy. Since their commercial debut in 1991, ...