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Cable company Nexans has been awarded a contract by StatoilHydro ASA to supply the submarine cables for the Sheringham Shoal Offshore Wind Farm project, located around 20 kilometer (km) offshore from Sheringham, on England's north Norfolk coast. The contract scope includes engineering, procurement and construction of two 22km, 145 kilovolt (kV) XLPE submarine export cables, and a spare cable with associated equipment. An optical fiber cable will also be included.

The Dutch and Danish power grid operators have announced they are to carry out a feasibility study into the possibility of an underwater electricity cable between the two countries, reports ANP news service. The two firms say the so-called Cobra cable will facilitate the use of renewable power. 'Strong connections between European countries can significantly increase how much wind power can be distributed on European grids,' Peter Jorgensen, one of the directors of Enereginet is quoted as saying. On Thursday the NorNed cable between the Netherlands and Norway – at 580 kms the longest underwater power cable in the world – was officially opened by the Dutch economic affairs minister Mara van der Hoeven. The cable has been operational since May.

An idealized application for superconductors is to employ them in the transmission of commercial power to cities. However, due to the high cost and impracticality of cooling miles of superconducting wire to cryogenic temperatures, this has only happened with short "test runs". In May of 2001 some 150,000 residents of Copenhagen, Denmark, began receiving their electricity through HTS (high-temperature superconducting) material. That cable was only 30 meters long, but proved adequate for testing purposes. In the summer of 2001 Pirelli completed installation of three 400-foot HTS cables for Detroit Edison at the Frisbie Substation capable of delivering 100 million watts of power. This marked the first time commercial power has been delivered to customers of a US power utility through superconducting wire. Intermagnetics General has announced that its IGC-SuperPower subsidiary has joined with BOC and Sumitomo Electric in a $26 million project to install an underground, HTS power cable in Albany, New York, in Niagara Mohawk Power Corporation's power grid. Sumitomo Electric's DI-BSCCO cable was employed in the first in-grid power cable demonstration project sponsored by the U.S. Department of Energy and New York Energy Research & Development Authority. After connecting to the grid successfully on July 2006, the DI-BSCCO cable has been supplying the power to approximately 70,000 households without any problems. The long-term test will be completed in the 2007-2008 timeframe.

DOE and SuperPower, Inc. commemorated on February 21 a $27 million project to install a 350-meter high-temperature superconducting (HTS) cable between two electrical substations in Albany. While that might not sound like much cable for the money, the project is the first demonstration of a technology that could someday be used to build a more energy efficient power grid. The HTS cable reduces energy loss by up to 10%, and wires using the same technology could potentially be integrated into generators, transformers, cables, and fault current limiters, making most of the equipment that produces and delivers power more energy efficient. On the other end of the power line, HTS wires can be employed in motors, providing an energy efficiency improvement for one of the largest electrical loads served by electric utilities.

Nodal analysis or link analysis of the Harmonic prone Electrical supply installation, its important to know the values of impedances offered by power cables for different harmonics present

Most of Power Cable manufacturers do not give such data. Even after asking them, it's un-available with them.

Also the solar units are so light weight that they can be suspended on steel cable lines rather than each having their own base connected to the ground. This rigging system allows for minimal land use disruption, 60 times less steel material and faster installation. The cables double as a control mechanism to align the units toward the sun.

Proving once again that there is little new under the sun (or the waves) is this 1932 version of the wave power generators that we showed here and here. It works on the basis of an "inertia motor" where "When a wave starts to lift the hollow sphere, the massive weight inside, because of its inertia, resists the movement and exerts terrific pressure in the lower cylinder. Finally the inertia of the weight is overcome. Then it possesses momentum. When the sphere reaches the crest of a wave, the combined effort of the momentum and the recoil of the huge, semi-elliptic springs exerts an equal pressure in the upper cylinder. The tremendous pressure is applied to oil, which, in turn, operates a special turbine which runs a generator. The current is conducted to the shore by submarine cable."