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Sustainability

Resource Conservation

 

In 2018, power industry continued to promote energy conservation upgrading, phase out backward production capacities, and speed up heat supply transformation. The main resource conservation indicators such as power supply standard coal consumption, line loss rate, and power generation water consumption continued to improve, and the comprehensive utilization volume of fly ash and desulfurization gypsum continued to increase.

 

1. Power Supply Coal Consumption

 

The national average coal consumption for power supply continued to decline. In 2018, the consumption of standard coal for power supply by thermal power plants of 6,000kW and above was 307.6g/kWh, 1.8 grams lower than the previous year.

 

The consumption of standard coal for power supply by thermal power plants of 6,000kW and above from 2000 to 2018 is shown in Figure 4-1.

 

 

2. Line Loss Rate

 

In 2018, the national average line loss rate further declined and dropped to 6.27%, 0.21 percentage point less than the previous year. Figure 4-2 shows the national average line loss rate from 2000 to 2018.

 

 

3. Service Power Consumption Rate of Power Plants

 

In 2018, the national average service power consumption rate of power plants declined in 2018. The service power consumption rate of power plants of 6,000kW and above in China was 4.69%, 0.11 percentage point less than the previous year. In particular, the service power cousumption rate of hydropower plants was 0.25%, 0.02 percentage point less than the previous year, while that of thermal power plants was 5.95%, 0.09 percentage point less.

 

The service power consumption rate of power plants of 6,000kW and above from 2000 to 2018 is shown in Figure 4-3.

 

 

4. Power Generation Water Consumption

 

The water consumption per unit of power generation in thermal power plants continued to decrease. With the further optimization of the thermal power structure and the promotion of water-saving technologies, water consumption of power generation continued to decline. In 2018, water consumption per kWh of thermal power generation in China was 1.23kg, 0.02kg fewer than the previous year.

 

Water consumption per kWh of power generation of thermal power plants from 2000 to 2018 is shown in Figure 4-4.

 

 

5. Solid Waste Comprehensive Utilization

 

(1) Fly Ash

 

The utilization volume of fly ash continued to increase. In 2018, the production of fly ash in thermal power plants was 550 million tons, 40 million tons more than the previous year; while the comprehensive utilization of fly ash was 390 million tons, 20 million tons more than the previous year. The comprehensive utilization rate of fly ash in 2018 was 71%, 1 percentage point lower than the previous year.

 

The overall fly ash production and comprehensive utilization in thermal power plants from 2000 to 2018 is shown in Figure 4-5.

 

 

(2) Flue Gas Desulfurization (FGD) Gypsum

 

The utilization volume of FGD gypsum in thermal power plants continued to increase. In 2018, the production of FGD gypsum in thermal power plants was 81.5 million tons, 6 million tons more than the previous year. The comprehensive utilization of FGD gypsum reached 60.5 million tons, 3.5 million tons more than the previous year. The comprehensive utilization rate of China was 74%, 1 percentage point lower than the previous year.

 

The overall FGD gypsum production and comprehensive utilization from 2005 to 2018 is shown in Figure 4-6.

 

 
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