Is it profitable to install solar energy at home?

We have built a 15 MW photovoltaic plant and understand this a little. Let's put it this way: if you have money saved, it's still profitable. Regardless of the size of a solar power plant, the payback period is in principle around 10 years. In some places, the cost can be recouped a year in advance if subsidies are higher. A 10 kW power station for domestic use requires an investment of around 90,000 yuan. The daily income from electricity production is 10 degrees * 4 hours * 0.85 (average electricity). price) = 34 yuan per month. Based on 25 days of good weather, the income can be 850 yuan, the annual income is 10,000 yuan, and the capital can be recovered in 9 years. Once the cost is recovered, it can still be used for 16 years. If subsequent maintenance costs are deducted, it can be deducted for 2 years, that is, there is still a net income of 140 000 yuan.