Bethesda Generator Systems installs automatic backup generators - Briggs & Stratton, Caterpillar, Onan, Kohler and others. We also service backup generators and maintain them for clients. Nursing home generators, home generators, fire station generators, data center backup generators, etc. With often unreliable Pepco and Dominion Power, more and more businesses and homes want reliable backup power. Since 1985, we've provided backup power in the Washington DC Metro area. We look forward to helping you too.