May 19th, 2015

Status Report on Ocean Energy

A recent report from the European Commission’s Joint Research Centre (JRC) presents the overall state of play of ocean energy in Europe and globally in 2014. The report analysed in depth the four main types of ocean energy conversion technologies and the key activities undertaken to ensure and facilitate their commercialisation.

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May 12th

Active Harmonic Conditioners

This Application Note discusses the use of active filters to reduce harmonic currents in installations. Active filters work by providing the harmonic current required by the load instead of it being drawn from the supply.

The major advantage of active filters is that they can be distributed around an electrical network in a decentralized manner, which enhances the effect of filtering. They can be programmed to respond to selected or all harmonic frequencies and quickly adapt to changes in load profile.

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May 8th

5MW Liquid Air Energy Storage Demonstrator Nears Completion

A novel 5MW/15MWh liquid air energy storage system is nearing completion at a landfill waste site near the city of Manchester, England. The demonstration system will be connected to the UK grid to provide balancing services.

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April 30th

Power Generation from High Altitude Winds

A potentially disruptive wind power innovation will begin a week-long trial at a Portuguese air force base before the end of April.

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April 28th

Environmental impact of economic cable sizing

This study analyzes the environmental effects of the use of electric conductors of larger sizes in offices and industrial applications, based on the design choices presented in the report "Modified Cable Sizing Strategies" by Egemin Automation.

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Switching to dynamic electricity tariffs

If presented with a choice of staying with a fixed tariff or moving to a dynamic tariff, will consumers maintain the status quo, or opt for change?

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April 20th

Substitution of lead sheath by copper laminated covering in HV cables

In this report attention is paid to the laminated covering, replacing the conventional lead sheath with corrugated aluminium or copper sheath in HV cables. Various designs and related pros and cons for both copper and aluminium laminated coverings will be discussed. Finally international experience and observed trends will be listed, resulting in the conclusion that a long term view, in which the beneficial properties of copper play a part, is recommendable.

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April 18th

How much are we willing to pay for renewable energy?

It’s easy for us to say we support renewable energy. But in practice, what is our willingness-to-pay (WTP) for it?

A key factor in whether a particular country or region is likely to reach its renewable energy objectives – such as the European Union’s goal to achieve a 20% overall share of renewable energy by 2020 – is how willing households are to migrate to its use from conventional energy.

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April 11th

An up-to-date analysis of the energy performance of PV systems

The long debate as to whether PV produces more energy than it consumes has been settled conclusively. It does.

A high energy return on energy investment (EROI) of an energy production process is crucial to its long-term viability. The EROI of conventional thermal electricity from fossil fuels has traditionally been viewed as being much higher than the EROI of renewable energy, and specifically of photovoltaics (PVs).

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April 9th

Best Practices for a Flexible and Functional Residential Electrical Installation

Over the years, the demand for flexible and functional electrical installations for houses and apartments has grown on a daily basis. Changing living conditions and habits, evolving housing needs, the availability of new technologies and the awareness of the importance of efficient energy use provide the impetus for an in-depth analysis of the electrical installation.

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