The answer depends mostly on how much air conditioning you consume. If you use a large central AC, a solar system could easily cost you 100,000 USD or more. If you use AC responsibly, it could be as little as 8,000 USD. 0 Share This Previous Post← Rich countries control poor countries through energy poverty Rich countries control poor countries through energy poverty Next PostWiring in conduit saves money even in the short run → Wiring in conduit saves money even in the short run You May Also Like . Advancements in batteries have brought us to the next ‘Energy Transition’ View Post . The most important thing about solar panels is that they are modular View Post . Open source engineering has solved many of the world’s problems View Post