Cradle to Gate
Identity ID
d7c969e8-d5d8-40b2-9bb3-72fe043d9908
Energy
Associated ID
f578c1b2-ecf3-4ab9-8185-11ce9fc9b15c
Included activities starts
Included activities ends
Description
This dataset represents the average power generation situation of pumped storage power stations in Chongqing, China. The data are obtained by weighted aggregation of the local production datasets for medium and large pumped storage power generation. A pumped storage hydropower station is a hydropower station that uses electricity during the off-peak load period of the power grid to pump water from the lower reservoir to the upper reservoir for energy storage, and releases water back to the lower reservoir to generate electricity during the peak load period of the power grid; its main difference from a reservoir-dam-type hydropower station in modelling lies in the number of reservoirs. For the production dataset of a specific technology, the greenhouse gas (mainly CO2 and CH4) emissions over the reservoir life cycle are estimated based on the Tier 1 method of the National Greenhouse Gas Inventory Guidelines (2019 Refinement), with emission factors adjusted according to the local climate zone and reservoir age. The hydropower station parameters are set according to design specification standards, i.e. the technical service life of small hydropower projects is 30 years, that of medium hydropower projects is 50 years, and that of large hydropower projects is 100 years. The data are mainly derived from official statistics.
Activity Description
The system boundary covers the entire operation and maintenance stage of pumped-storage power plants, including pumping water from the lower reservoir to the upper reservoir, releasing water from the upper reservoir to drive the turbines and generate electricity, and routine equipment maintenance.
Process Description
The product is grid-connected power in kWh, with a voltage level of ≥35 kV.
Time period
2022
2026
Geography
China,Chongqing
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
A pumped-storage hydropower station is a hydropower station that uses electricity from the power grid during low load periods to pump water from a lower reservoir to an upper reservoir to store energy. When the power grid reaches peak load, the water is released back to the lower reservoir to generate electricity. The main difference between it and a storage dam-type hydropower station is the number of reservoirs. The pumped storage power station here considers combinations of different installed capacity sizes. Hydropower station parameters are set according to design specifications and standards, that is, the technical service life of small hydropower station projects is 30 years, the technical service life of medium-sized hydropower station projects is 50 years, and the technical service life of large hydropower station projects is 100 years.