IEC_Elctrical Energy Storage.pdf

Which is made up of the existence of conventional

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which is made up of the existence of conventional technologies, technological difficulty of the EES technology development concerned, compatibility with the related existing business and the social circumstances. The results are shown in Figure 4-2.
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63 Figure 4-1 – EES benefit (break-even cost) and market size by application in the US [eye11] The most promising market, where a large market and high profitability can be expected, is “Conventional Stabilization”, where pumped hydro storage and CAES are applicable. Conventional stabilization includes time shift, smoothing of output fluctuations and efficiency improvement of conventional generators. The reason why this application is promising is that the need for time shift and smoothing output fluctuations will grow dramatically in accordance with the expected broad introduction of renewable energies. Another attractive market is “Balancing Energy”, which corresponds to adjusting power supply to meet demand that fluctuates within short periods. Large storage technologies such as PHS and CAES are already economically feasible in this application, and other EES technologies will have great opportunities in the future. The need for balancing energy is likely to rise as renewable energy generation causes fluctuations on the supply side to increase, and more and more power markets will introduce sophisticated market mechanisms for the procurement of balancing energy. The study concludes that total market potential for the eight groups of applications is 330 GW.
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64 S E C T I O N 4 Forecast of EES market potential by 2030 4.1.3 EES market estimation for Li-ion batteries by the Panasonic Group Panasonic Group (Sanyo) has estimated the EES market potential of the Li-ion battery. This estimation was made by a simulation, with the following assumptions: 1) assuming that the trend of battery purchase prices will continue as determined by a market survey, and comparing with the future price of the Li-ion battery; 2) for utility use, assuming community energy storage and partial substitution of investment for transmission and distribution; 3) for UPS, assuming the probability of replacement of a lead acid battery by Li-ion to save space, for easy maintenance and considering the price gap; 4) assuming that growth in EV stations will be comparable to that in EVs themselves; 5) assuming no lithium shortage. The result of the simulation, shown in Figure 4-3, indicates that the Li-ion battery market will grow steadily, and the residential market in particular will increase rapidly starting in 2017. There are, and will be, a wide variety of Li-ion battery applications, from small to large in battery size. Figure 4-2 – EES market forecast by application for 2030 [bcg11]
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65 Figure 4-3 – Global market for Li-ion batteries (Sanyo, 2011) 4.2 EES market potential estimation for broad introduction of renewable energies The integration of renewable energies into the electric power grid can cause problems of output fluctuation and unpredictability. When the total
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