Are wind farms bad long-term investment?

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By 2020 UK aims to produce 15% of its energy from renewable sources such as wind energy; To date, the country has 4,246 turbines spread over 531 wind farms, generating 7.5% of the country’s...

A tidal turbine of 300 MW in Europe by 2020

A tidal turbine of 3...

OpenHydro, a subsidiary of DCNS, specializing in tidal energy systems and Alderney Renewable Energy (ARE) signed an agreement to create a joint venture, Race Tidal Ltd. The two companies...

7.8 megawatt photovoltaic plant in Israel

7.8 megawatt photovo...

German subsidiary of ET Solar Energy announced last week the completion of the design and commissioning of a photovoltaic plant of 7.8 megawatts (MWp) in Israel for EDF Energies Nouvelles. Mishmar...

New record in efficiency for transparent solar cells

New record in effici...

Thanks to a new development made ​​by the German company Heliatek on organic solar films, it is now possible to obtain levels of transparency up to 40%, with an efficiency exceeding...

London’s largest solar bridge in the world (finally) opened

London's largest sol...

Located in central London, the new railroad bridge ‘Blackfriars’ which spans the River Thames in central London officially became last week the largest solar bridge in the...

Russia will build a giant wind farm in the Arctic

Russia will build a ...

The first wind farm in the Arctic should be released in the Arkhangelsk region for a planned launch by 2015 or 2016, according to a report issued by ‘the voice of Russia. The...

Satellites: solar panels that double as antenna

Satellites: solar pa...

The EPFL researchers managed to merge antennas and solar cells in a mixed device that promises unprecedented efficiency, this is the first step towards the development of more compact...

Sound waves can improve the efficiency of solar cells

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Believe it or not, but playing pop-rock greatly improve the efficiency of solar cells, according to a new study published by researchers at Queen Mary, University of London and Imperial...



Renewable energy sources classification and current situation.

energyResourcesHere we will try to introduce you to the renewable energy sources (RES) available today. RES refers to energy resources which are naturally replenished: wind, solar, hydro-power, biomass, geothermal energy, ocean energy.

The EUROSTAT’s definition of RES: Renewable energies cover hydro-power, wind energy, solar energy, biomass and wastes and geothermal energy. Renewable energies are the sum of hydro-power, wind energy, solar energy, biomass & wastes and geothermal energy.

Today, renewable energy is mainly produced and used domestically. Traditional biomass (for cooking and heating) is growing just slowly as it is used more efficiently or replaced by more modern energy sources, large hydro-power is growing slowly, new renewables (small hydro, modern biomass, wind, solar, geothermal and bio-fuel) are growing very rapidly.

Modern applications of renewable energy have grown steadily over the past three decades and the investment to developing renewable energy capacities in countries is growing rapidly, from $6 billion in 1995 to over $50 billion in 2008

The good news is that renewable resource potentials exceed today’s world energy consumption.

Renewable energy policies and promotions, as well as new targets already exist in more than 50 countries all over the world. Most of them are targeting the share of renewable energy in the electricity generation (typically 5 – 30 per cent). This is true for most developed countries. And as far as we can tell the most rapid changes can be seen in South-Eastern Asia and China.

The biggest problem in developing new RES policies and projects is the lack of a unified system, that would provide information on the know-how and statistics periodically and transparently. The are also copyright law issues and very significant differences in the definitions of RES stated by various organizations. The other interesting fact is that no matter how rapidly the investments to the sector increase, there is still not nearly enough funds to reach the average term goals for this type of resources.



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