How to Estimate a Home PV System Investment and Payback Time?

Investing in a home distributed PV system depends on two main conditions: installation capacity and installation environment. A typical home will not install more than 30 modules, and the system capacity will be around 10 kW. Calculated at a per-watt cost of RMB 8-9, a home grid-connected distributed system requires an investment of about RMB 40,000-100,000. Depending on sunlight conditions, user-side tariffs, subsidies, and system costs, the investment can be recovered within 6-10 years, and the electricity income generated during the remaining 15-20 years becomes profit.