The expensive component separating many electric vehicles from practical home-backup duty is not necessarily the battery. It is the additional power-conversion equipment installed at the house.

CLINTON, WHIDBEY ISLAND — Describing the Washington State Ferries system as “in crisis,” Gov.-elect Bob Ferguson said he may postpone the ongoing work to convert the fleet’s largest ferries to ...

Every time electricity is converted from alternating current (AC) on the local grid to the direct current (DC) required by hardware, power is lost. In today's high-density AI data centers, that ...