How should energy storage be assessed?

Economic assessment of energy storage must be based on the lifetime cost of energy or power delivered, factoring in all parameters for technology cost, performance, and the service it provides.

What is the combined levelized cost of energy?

In general, the combined levelized cost of energy lies between the LCOE of PV and LCOE of storage. Correction factor K for LCOE calculation. Comparison between exact formula with approximation formula. ‡ .

How to calculate the cost of electricity?

So, people simply adopted the simplest scenario to calculate the cost of electricity - dividing the installed cost by the number of cycles, which has also led to the current trend in the market that cycle times are the most important guide. Both producers and buyers prioritize increasing cycle times.

Is there an economic indicator to compare energy storage systems?

Nevertheless, as of today, there is no generally accepted economic indicator which would allow us to compare different energy storage systems, unlike in the planning of construction of power plants, for example, where the indicator “Levelised Cost of Electricity (LCOE)” has been accepted.

What is the levelised cost of storage?

In general, the levelised cost of storage shows the intrinsic value of a kWh of energy delivered by an ESS, for which it should be sold to achieve a zero net present value (NPV). The LCOS is determined as the sum of all investments over the lifetime of an ESS divided by the cumulative energy generated as a result of these investments.

How is electricity delivered over its lifetime calculated?

At the design stage, the amount of electricity delivered over its lifetime can be calculated based on the service life of the storage unit, determined by the number of complete charge-discharge cycles, or based on the estimated lifetime of the ESS considering its operation mode, for example, operating as a backup power supply. 3. LCOS calculation