Thailand's "Solar Million Rooftops" programme reduces installation permits from months/years to 7 days and grid-sell approval to 30 days. The scheme offers state-subsidized down payments and 2–4% low-interest on-bill financing through state banks (Kbank, BAHTEC), with typical 5 kW systems generating ~600 units/month and saving ~2,150–2,200 THB/month—enabling payback in 5–7 years. Target is 1 million residential systems (5,000 MW), aiming to lower nationwide electricity rates by ~5 satang/unit and accelerate the prosumer energy model.