Energy storage project cost estimation formula

Which energy storage technologies are included in the 2020 cost and performance assessment?

The 2020 Cost and Performance Assessment provided installed costs for six energy storage technologies: lithium-ion (Li-ion) batteries, lead-acid batteries, vanadium redox flow batteries, pumped storage hydro, compressed-air energy storage, and hydrogen energy storage.

How much do electric energy storage technologies cost?

Here, we construct experience curves to project future prices for 11 electrical energy storage technologies. We find that, regardless of technology, capital costs are on a trajectory towards US$340 ± 60 kWh −1 for installed stationary systems and US$175 ± 25 kWh −1 for battery packs once 1 TWh of capacity is installed for each technology.

How important are cost projections for electrical energy storage technologies?

Cost projections are important for understanding this role, but data are scarce and uncertain. Here, we construct experience curves to project future prices for 11 electrical energy storage technologies.

How do you calculate a unit energy cost metric?

The unit energy or power annualized cost metric is derived by dividing the total annualized cost paid each year by either the rated energy to yield $/rated kilowatt-hour (kWh)-year or by rated power to yield $/rated kilowatt (kW)-year, where the kWh and kW are rated energy and power of the ESS, respectively.

What are base year costs for utility-scale battery energy storage systems?

Base year costs for utility-scale battery energy storage systems (BESS) are based on a bottom-up cost model using the data and methodology for utility-scale BESS in (Ramasamy et al., 2022). The bottom-up BESS model accounts for major components, including the LIB pack, the inverter, and the balance of system (BOS) needed for the installation.

How are cost and performance data compiled?

The cost and performance data were compiled for the defined categories and components based on conversations with vendors and stakeholders, literature, and costs of systems procured at sites across the US. Detailed cost, cost ranges, and performance estimates are presented for 2020 and projected out to 2030 for each of the technologies described.