An enclosure for a standby generator includes a frame having a base for supporting an engine and an alternator driven by the engine, a back wall extending generally vertically from the base, and first and second sidewalls extending generally vertically from the base and connected to the back wall at opposite ends of the enclosure, the first and second sidewall each having a top edge, generally sloping downward from the back wall forward. The enclosure also includes first and second doors, each respectively attached to the first and second sidewalls of the frame such that each pivots about the top edge of the first and second sidewalls.