Harnessing 20% of the US offshore wave energy potential at 50% efficiency could make a contribution to the US electricity supply equivalent to conventional hydro (around 200 TWh). In addition, there is potential from tidal currents, currently that is still under investigation (reference). According to a white paper from EPRI's Ocean Energy Programme, the world installed capacity for ocean wave power is 2.29 MW, as of September 1, 2005.Read full article
Configurations to ensure safety and functionality for each operating environment
For most people, the earthing connection comes from the socket, but what about the other end of the cord? Several earthing configurations exist. This minute lecture gives an introduction to the characteristics of each system.
Note: this minute lecture is largely based on European engineering practice. In some other parts of the world, different earthing configurations may be found.Read full article
Obviously an environmental problem, but recently, economists have pleaded for a larger consideration of its economic aspects (cf Henderson). The Stern review published last month a discussion paper 'What is the Economics of Climate Change?' 'Climate change itself may impede growth and development', but so may climate change mitigation. While there is broad support on the need to act, uncertainties pose a challenge to define the level of appropriate action.Read full article
An update to the milestone 2000 WEA by UNDP, taking into account developments since it was finalised in late 1999. The result is the analysis presented in this document. The 2004 Overview provides a comprehensive view of energy for sustainable development issues and options. The basic objective of the WEA is maintained, that is, to provide an assessment of issues and options related to energy for sustainable development and to provide information on alternative global experiences.Read full article
The German engineering association VDE produced 3 scenario's  for Germany's electricity system with time horizon 2020. The report takes an engineering perspective (phyical availability - technical feasibility - economic optimisation - social acceptability). All scenario's are based on a moderate electricity consumption growth (0.5% p.a.).Read full article
Electric railways form a large energy user, covering approximately 50 TWh/year, over 2 % of the total annual electricity consumption in the European Union. The associated costs are a significant part of railway exploitation. Especially in low-voltage DC systems, as used in many parts of Europe, energy losses take a large share of the total energy costs. The losses in the overhead catenary wire take a significant share of these losses.Read full article
Date: March 17, 2006 14h00 GMT+1Read full article
Duration: 1 hour
Speaker: David Chapman, Leonardo ENERGY
The third presentation of this series describes practical examples, highlights special and uncommon power quality impacts and a few uncommon niche applications to solve PQ problems.
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'We are missing a great opportunity.' The words are those of the EU commissioner on competition, Ms Neelie Kroes, in a speech February 16. She mentions five issues where she claims the picture to be 'gloomy'.Read full article