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Taking 60 pieces of 270Wp polycrystalline silicon modules as an example.

2) Component auxiliary materials

Taking 60 polycrystalline silicon modules as an example, the weight of the glass is 12.93kg, and the energy consumption per ton of photovoltaic glass is 350kg standard coal. Calculated based on an equivalent amount of 0.1229kg standard coal of 1kWh, the power consumption of photovoltaic glass is 0.142kWh/W, and the aluminum frame is 2.8kg. Based on the power consumption of 133500 kWh per ton, the power consumption of aluminum frame is 0.144kWh/W, and the power consumption of module lamination is about 0.06kWh/W.

3) Auxiliary materials for power plants

Every 100MW power station requires support steel of 5000t, steel reinforcement of 1500t, and various types of cables of 850km. The energy consumption of support steel and steel reinforcement is 0.3kWh/W, and the energy consumption of cables is about 0.01kWh/W. Booster transformers, inverters, etc. are calculated at 0.05kWh/W.

4) Single watt energy consumption

In summary, the total energy consumption of the 270Wp component is 406.57kWh, with a unit energy consumption of 1.5kWh/W.

3. Energy recovery period of photovoltaic power plants

Taking Beijing as an example, the average annual total radiation amount in Beijing for many years is 1371kWh/m2; A 1MWp photovoltaic power plant using 36° For a distributed photovoltaic project with a fixed inclination angle, the annual peak hours are 1628 hours. Considering 80% of the system efficiency, then:

First year power generation=1000kW× 1302.4h× 80%=1302000 kWh

Considering a 10 year decay of 10% and a 25 year decay of 20%, the average annual power generation for 25 years is approximately 1.157 million kWh

The uniform annual power generation of 1MWp photovoltaic modules is 1157000 kWh, resulting in a single watt power generation of 1.157 kWh.

The energy recovery period of photovoltaic power plants is:

1.5kWh&pide; 1.157kWh/year=1.3 years

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