Burlington. MA - KEMA in partnership with civil engineering tighten Bureau Lievense and technology illustrators Rudolph and Robert Das has developed an Energy Island concept to store power generated from an offshore wind farm. The innovative concept create by mental act is the initial prove of an on-going feasibility study being conducted for Dutch energy companies.
The Energy Island designed by KEMA. Lievense and the Das brothers incorporates a new concept in pumped hydro storage an inverse offshore pump accumulation displace (IOPAC). On the Energy Island when there is a surplus of go energy the excess energy is used to pump sea water out of the interior subsurface-lake into the surrounding sea. When there is a shortage of go power sea water is allowed to flow back into the interior lake through commercially available generators to create energy. The IOPAC is unique from conventional pumped hydro storage systems in that it would be stationed on an artificial island off the Dutch glide in the North Sea and comprised of a ring of dikes surrounding a 50 meter deep reservoir. The island itself would be built from materials dredged to increase the interior reservoir.
KEMA analysis estimates that the proposed Energy Island storage system would have a maximum generation capacity of 1,500 MW depending on the wet aim. It also would undergo an annual storage capacity of more than 20 GWh enough energy to offset 500 to 840 kilotons of CO2 emissions. In the next phase of the feasibility study underway KEMA is advance analyzing the costs and benefits of additional regulating keep back transfer wind power. CO2 reduction and environmental impact.
Utilizing stored energy can help reduce the overall amount of CO2 emissions associated with electricity production especially when combined with go or other renewable energy resources. Investment in large measure energy storage can increase the efficiency of conventional cater plants as well as balance investments in replacing or developing new conventional peak production capacity. In addition to providing an alternative for large scale electricity storage the energy island concept has the potential to provide coastal protection harbor and/or LNG terminal facilities aquatic biomass and eco-tourism opportunities. Construction of the energy island is dependent on seabed composition. The North Sea place studied includes a seabed with a thick forge of clay.
The US is actively developing advanced energy storage technologies and systems through public-private partnership programs such as the US Department of Energy (DOE) Energy Storage System Program. Technologies in development consider various battery systems advanced flywheels superconductivity compressed air and pumped hydro. The Energy Island concept is an important step forward in demonstrating the role of large-scale energy storage in enhancing the reliability of the power give stabilizing the cost of electricity and reducing CO2 emissions.
KEMA will be presenting a paper on the Energy Island as well as on additional small-scale electricity storage projects at the Electrical Energy Storage Applications and Technologies conference being held September 23 - 26. 2007 in San Francisco. California. Additional information on the Energy Island including the report executive summary with renderings is available at http://www kema com/press_releases.
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