DC grids: Going back to the future

摘要

Although AC won the 'war of the currents' of the 1880s, DC is perfectly suited to low voltage electrical devices including computers and LED lighting, as well as many energy efficient appliances. If localised DC networks or self-contained micro-grids became commonplace, this could create a large market for lead-acid storage batteries, as well as other chemistries. Since December 2010, a