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To help you save money by saving energy, we launched #AskEnergySaver — an online series that gives you access to some of the Energy Department’s energy efficiency experts. As part of the series, Energy Department scientists, engineers and program managers will be answering your questions and sharing their advice on simple ways to lower energy costs and… Keep reading →

Electrical Wires

Starting in the late 1880s, Thomas Edison and Nikola Tesla were embroiled in a battle now known as the War of the Currents. Edison developed direct current — current that runs continually in a single direction, like in a battery or a fuel cell. During the early years of electricity, direct current (shorthanded as DC) was the standard in… Keep reading →