Sodium-sulfur battery energy storage cost per kilowatt-hour

4 FAQs about [Sodium-sulfur battery energy storage cost per kilowatt-hour]

How do sodium-sulfur batteries work?

The operation of sodium-sulfur batteries is based on the reversible chemical reactions between sodium and sulfur. Shown in Fig. 1(b), at the cathode, sulfur is reduced to form polysulfides (S2-), while at the anode, metallic sodium is oxidized to produce sodium ions (Na+).

How much does a 4 hour battery system cost?

Figure ES-2 shows the overall capital cost for a 4-hour battery system based on those projections, with storage costs of $245/kWh, $326/kWh, and $403/kWh in 2030 and $159/kWh, $226/kWh, and $348/kWh in 2050.

Does battery storage cost reduce over time?

The projections are developed from an analysis of recent publications that include utility-scale storage costs. The suite of publications demonstrates wide variation in projected cost reductions for battery storage over time.

What is a battery used for?

The batteries, with their high energy density, are well-suited for large-scale energy storage applications, including grid energy storage and the storage of renewable energy .

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