Table 3

Economic and environmental parameters of the storage.

Storage type Capital cost (power-based) €/kWh Capital cost (energy-based) €/kWh Charge time Discharge time Environmental impact Source
Pumped-hydro 1700–2550 4.25–85 hr–months 1–24hr+ Large [4]
  510–1700 4.25–85       [5]
    10.2–71.4       [7]
Compressed air 340–850 1.7–102 hr–months 1–24hr+ Large [4]
  340–680 1.7–42.5       [5]
    3.4–71.4       [7]
Flywheel 212.5–297.5 850–11900 sec–min ms–15min Almost none [4]
  255–850 2550–5100       [5]
    340–680       [7]
Lithium-ion 765–3400 510–3230 min–days min–hr Moderate [4]
  1020–3400 85–2125       [5]
    765–1105       [7]
Lead–acid 255–510 170–340 min–days s–hr Moderate [4]
  255–510 170–340       [5]
    51–102       [7]
Nickle-Cadmium 425–1275 340–2040 min–days s–hr Moderate [4]
  425–1275 680–1275       [5]
    340–2040       [7]
Natrium-Sulfur 850–2550 255–425 sec–hr s–hr Moderate [4]
  850–2550 255–425       [5]
    212.5–456.45       [7]
Vanadium-Redox 510–1275 127.5–850 hr–months s–24hr+ Moderate [4]
  850–2550 255–425       [5]
        [7]
Hydrogen Fuel Cell 425–850 12.75 hr–months 1–24hr+ Small [4]
  425–850       [5]
    11.9–15.3       [7]
Capacitor 170–340 425–850 sec–hr ms–60min Small [4]
  170–340 425–850       [5]
        [7]
Supercapacitor 85–382.2 255–1700 sec–hr ms–60 min None [4]
  110.5–437.75 8500       [5]
        [7]
Superconducting magnetic 170–415.65 850–61200 min–hr ms–8s Moderate [4]
  110.5–437.75 850–8500       [5]
    6083.45–17000       [7]

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