Handbook of Energy Storage for Transmission or ... - W2agz.com

EPRI Proprietary Licensed Material
Regenesys Electricity Storage Technology
a first commercial plant with a nominal capability of 120MWh and 12MW (the nominal
capabilities of both the Little Barford and the CAFB plants), one would sum the products of
$120/kWh by 120MWh ($14.4 million) and $300/kW by 12MW ($3.6 million) to obtain a total
plant cost projection of $18 million ($1,500/kW). Similarly, for the 30 th plant, the total plant
cost would be calculated to be $7.8M + $1.8M = $9.6M, or $800/kW.
Table 2
Projected Costs for Turnkey 100MWh/10MW Regenesys Energy Storage Plant for Transmission Deferral
plus Area Regulation Application (2002$)
Application:
Transmission
Deferral & Area
Regulation
Plant
Size
MWh
Plant
Capacity
MW
Capital
Cost:
Power
Related
($/kW)
Capital
Cost:
Energy
Related
($/kWh)
Total
Capital
Cost
(Millions
of $)
O&M
Cost:
Fixed
($/kW-yr)
O&M
Cost:
Variable
($/kWh)
1 st . Commercial
Plant 100 10 300 120 15 10 0.01
30 th . Plant with
10 plants/year 100 10 150 65 8 1 0.005
The capital cost parameters shown in Table 2 do not, however, represent appropriate arithmetic
to use for plants that have a nominal discharge rate different than 10 hours, or for plants where
the peak power capability is markedly different than one-tenth the energy capacity. In these
circumstances, the parameters shown in Table 3 are thought to be more appropriate. The
parameters listed in Table 3 should be used according to the following formula:
Total Plant Cost = Base $/kWh x Baseline kWh
+ Incremental $/kWh x (Plant kWh – Baseline kWh)
+ Incremental $/kW x (Plant kW – Baseline kW)
Note that the parameters in Table 3 are Symons/EECI projections based on a limited amount of
information from Innogy and our knowledge of cost breakdowns for other flow batteries. It must
be noted that the parameters given in Table 3 are expected to have limited applicability, for
excursions from the 100MWh/10MW baseline design of perhaps +30% in the energy capacity
and perhaps +50% in the power capability.
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