Energy Storage Summary - Part 1
Energy Storage Summary - Part 2
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Energy Storage Summary
Energy Storage Summary - Part 1
The primary long-term drivers for energy storage development are integration of intermittent renewable resources and electricity grid support.
- Energy storage technologies store some form of energy for later use.
- The main industry drivers for energy storage are: increased penetration of renewables, the need to manage electricity transmission and distribution peak loads, and end-user energy management.
- Energy storage technologies may be considered in two types: large scale (>10MW and several hours of discharge) and small scale (kW-10MW and seconds-minutes discharge).
- There are currently two options for large scale energy storage; pumped storage and compressed air energy storage. However, battery storage is being demonstrated at significant scales and making inroads into larger scale applications.
- Pumped storage is the most largely deployed of all storage technologies to date, with over 99% total installed storage capacity in the world.
Energy Storage Summary
Energy Storage Summary - Part 2
Pumped storage makes up 99% of the total installed storage capacity. Smart gird systems will utilise storage for load management and grid support.
- Compressed Air Energy Storage (CAES) is the second largest with over 440MW installed between two systems (in USA and Germany).
- Electrochemical batteries are the most established small scale energy storage technologies however deployment is limited and still under evaluation.
- Lead acid batteries remain the lowest cost and most reliable battery technology. However application use and life cycle costs need to be considered.
- Renewable energy integration may be improved by energy storage systems under site specific conditions.
- Investments in smart grid technology will enable energy storage systems to be optimally used for transmission and distribution support and peak load management.