# 3 MW VSG storage supports a weak hydro-diesel grid Virtual synchronous machines add inertia, cutting frequency deviation by 41%. The regional grid is dominated by hydropower and leans on diesel in the dry season, with visible frequency swings. The project deploys 3 MW of grid-forming storage using virtual synchronous machine (VSG) control. Results Provides inertia and voltage support to a weak grid Frequency deviation down 41% Diesel start/stops down 70%