Provided is a package for a standby power generator. The package comprises a framework. The framework is provided with a AC power generator based supporting an engine and driven by an engine; a back wall extending from the base generally vertically; and a first and second sidewalls extending from the base generally vertically and connected with the back wall at a packaged relative tail end; wherein the first sidewall and the second sidewall are provided with top edges inclined forwardly from the back wall and generally downwardly. The package further comprises a first portal and a second portal which adhere to the first sidewall and the second sidewall of the framework so that the first portal and second portal pivot the top edge of the first sidewall and the top edge of the second sidewall respectively.