It is planned to install 3.36 kW, 280 w/piece monocrystalline, the unit price is 8.5 yuan, and install 12 modules. Total investment (280*12*8.5) = 28,560 yuan.
Annual income: 3.36 kW*1.1 (multiple light ratio)=3696 degrees/year
Private use: plan 200 degrees/month*12 months=2400 degrees/ year
Savings: 2400*0.5 (domestic electricity price) = 1200 yuan
National subsidy: 3696 degrees*0.62=2291 yuan
< p>Remaining electricity connected to the Internet: 1296*0.5=648 yuanTotal (save 1200 yuan + makeup 2291 yuan + purchase 648 yuan) = 4139 yuan/year
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