Siemens has unveiled the postponement of first subsea grid after revealing the purchase of Expro’s Connectors and Measurements division for $630 million, which will provide the final engineering for the project, the Reuters reported.
CEO of Siemens Oil and Gas Division, Adil Toubia, stated that the proto-type subsea power grid would be implemented at the end of 2013 and would be available to the market at the end of 2014.
Atle Stromme, Global Head of Subsea, said to Reuters that Expro’s C&M business would complete what Siemens needs to create the subsea power grid, a first ever for water depths of minimum 3,000 meters in the oil and gas processing business.
Reuters citied him as saying: “We now have in-house to develop the power grid.”
Siemens’ subsea power grid — which consists of transformers, converters, switchgears and adjustable speed drives — will supply the power to carry the oil and gas from the wellhead to a processing facility.
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Siemens AG (SIE) has revealed its intention to introduce technology in 2015 that will enable conversion of wind-turbine electricity into gas, providing wind farms with an alternative revenue stream when the grid is fully charged.
Michael Weinhold, Chief Technology Officer of Siemens’ Energy Businesses, says the electrolyser, a soccer-field sized plant that converts power into storable hydrogen, is in the testing phase, reports Bloomberg. It offers a promising capacity necessary for overcoming the challenge of how to harness fluctuating electricity output from wind farms, especially at night when demand is the lowest.
Munich-based Siemens allocates 1 billion euros ($1.3 billion) on annual bases to devising new technology for the energy industry. Wind farms have faced hardship in commercial terms because power cannot be stored on a large scale, however the converted hydrogen can be stored by feeding it into the gas grid.
“The main problem today is the mismatch of renewable power generation and demand,” Weinhold said in an interview. “If we can offer solutions to solve that, we have a business case.”
“With this increase in its stake, Siemens is strengthening its activities in ocean power generation. We will actively shape the commercialization process of innovative marine current power plants,” said Michael Axmann, CFO of the newly founded Solar & Hydro Division within Siemens’ Energy Sector.
Marine Current Turbines (MCT) has evolved from a pioneer to a technology leader in horizontal axis marine current turbines and now has 25 employees. In February 2010 Siemens acquired a minor stake in the Bristol-based company and thus entered the marine tidal current market. Financial details of today’s announcement are not disclosed.
Ocean power is emerging with strong growth rates driven by global CO2 reduction commitments. Until 2020, experts anticipate double-digit growth rates for the ocean power market. Based on further estimates the global potential for power generation using tidal power plants is 800 terrawatt-hours (TWh) per annum. For comparison, that is equivalent to between three and four percent of power consumption worldwide.
Dr Andrew Tyler, CEO of MCT said: “Through the expansion of the partnership with Siemens, we have further strengthened our position in the tidal energy market. We have the increased backing of a major industrial player which is essential to support the commercialization of our proven technology. We are about to approach investors to secure funding for our first two tidal array projects, and Siemens’ increased investment as well as UK Government support should give investors the confidence that we have the necessary backing to deliver these crucial projects and the ones to follow.”
MCT plans to present two Project Investment Prospectuses to the market within the next month for its 8 megawatts (MW) Kyle Rhea project in Scotland and its 10 MW Anglesey Skerries project in Wales. For both projects, applications for leases from The Crown Estate have already been approved. The UK Government’s recent ROCs Banding announcement (October 20) will support these projects with 5 ROCs per megawatt hour proposed for tidal energy.
In addition, MCT is planning to deploy a tidal system into the FORCE facility in Canada’s Bay of Fundy and has an approval for a lease from The Crown Estate to deploy a 100 MW tidal farm off Brough Ness, on the southern most tip of the Orkney Islands in Scotland.
MCT has already successfully implemented its first commercial scale demonstrator project SeaGen in Northern Ireland’s Strangford Lough. Since November 2008, SeaGen’s two axial turbines, with a combined capacity of 1.2MW, have been feeding power into the grid to supply the equivalent of around 1500 homes. SeaGen has to date generated over 2.7GWh of electricity to the grid, the largest amount of electricity in the whole of the ocean power sector.
Marine current turbines generate electricity by utilizing tidal current flows. The SeaGen turbine is fixed on a structure and is driven by the flow of the tides with a key advantage that the generated power is precisely predictable in the tidal cycle. This technology effectively is similar to that of a wind turbine with the rotor blades driven not by wind power but by tidal currents. Water has an energy density of more than 800 times that of wind. Twin rotors rotate with the movement of the tidal flow and pitch through 180 degrees to optimally track tidal current direction and speed.
Marine current turbines are part of Siemens’ Environmental Portfolio. In fiscal 2010, revenue from the Portfolio totaled about EUR28 billion, making Siemens the world’s largest supplier of ecofriendly technologies. In the same period, Siemens’ products and solutions enabled customers to reduce their carbon dioxide (CO2) emissions by 270 million tons, an amount equal to the total annual CO2 emissions of Hong Kong, London, New York, Tokyo, Delhi and Singapore.
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