With an archipelago comprised of thousands of islands, there are a multitude of provinces in Indonesia that desperately need a clean and reliable source of power. P.T. HPSI is an SPV that, on behalf of InfraCo Asia, leads a project that envisages developing a pipeline of hybrid solar-battery installations in aggregate of 150 MW of capacity. This relatively new hybrid configuration has not yet been pursued in these island provinces. Currently, such provinces rely on high-cost diesel-based generators. Stand-alone solar installations disrupt the stability of relatively weak island grids due to the intermittent nature of solar energy production, which is not reliable. As a result, stand-alone solar installations do not provide a comprehensive solution for reliable power in many island provinces in Indonesia. The hybrid integration of solar-battery and diesel generators allows the reduction in the use of fossil fuels.