In 2025, a 20 kW solar panel system costs around $47,600 before incentives, based on real installation data from across the country. But your actual price will depend on factors like your roof's complexity, local labor costs, the equipment you choose, and what incentives are. . 20. 7kW solar kit with 10kWh residential energy storage system includes Canadian 445 TOPcon black module CS6. 1-54TM-445, Canadian EP Cube hybrid inverter 7. 6kW AC, Gateway auto-transfer switch, 10kWh battery, mounting, monitoring, accessories and permit. We design every article to provide you with deeply-researched, factual, useful information so that you can make. . A 20 kw solar system will cover, at least partly, the energy consumption of your business and pay for itself in less than a decade. Commercial solar systems are for the most part grid-tied and they are. . This updated 2026 guide explores the costs associated with a 20kW solar system, factors influencing these costs, financial incentives, and the potential return on investment (ROI). A 20kW system today might cost anywhere between $16,500 and $49,000, but why the wild swing? Here's the kicker: your neighbor's quote from last month is already outdated thanks to global supply chain hiccups. .