How much does a solar energy system cost?

In addition to costs for each technology for the power and energy levels listed, cost ranges were also estimated for 2020 and 2030. The dominant grid storage technology, PSH, has a projected cost estimate of $262/kWh for a 100 MW, 10-hour installed system. The most significant cost elements are the reservoir ($76/kWh) and powerhouse ($742/kW).

How much does the Goldendale energy storage project cost?

The Goldendale Energy Storage Project has a head of 2,400 feet and is expected to cost $1,800/kW for C&I. Higher head for the project also reduced tunnel excavation costs due to the fact the pump/turbine centerline depth below the lower reservoir bottom decreased with increasing head (Miller, 2020a).

How much does energy storage cost in a cavern?

Therefore, efforts to reduce cost of storage via engineering design are expected to gain traction. As long-duration energy storage (diurnal and seasonal) becomes more relevant, it is important to quantify cost for incremental storage in the cavern. The incremental cost for CAES storage is estimated to be $0.12/kWh.

How much does a 10 hour power plant cost?

For a 10-hour plant, the reservoir cost was found to be $104/kWh, higher than the $77/kWh without contingency fee and very close to the $103/kWh inclusive of contingency fees obtained from conversations with a PSH developer (Miller, 2020a).

How much does the Bethel Energy Center project cost?

The cavern for the 324 MW, 16000 MWh Bethel Energy Center project has a capacity of 4 million barrels. To increase the size by 20%, a 63-day leaching at 3000 gallons per minute is needed, estimated to cost $383,000 including electricity, water and labor (Naeve, 2020), which amounts to $0.12/kWh, or $1.2/kW for the 324 MW plant.

What is annual discharge energy throughput?

Annual discharge energy throughput is the product of rated energy capacity of the storage system, DOD, and the number of cycles per year. The annual discharge (kWh/yr) for each technology by power capacity, energy duration, and estimate year is provided in Appendix 4.