Category: Hydro


Voith to install pilot tidal turbine in South Korea

February 16th, 2010 | Posted in Hydro

A new tidal power plant is being planned in South Korea. The "Seaturtle Tidal Park" will be the largest such implementation of tidal power technology in the country.

The first turbine for the new tidal park has been developed by Voith in Germany, and now in cooperation with Korean partner Renetec, the new turbine will be installed in Korea for testing. The unit is capable of generating 110 kW of power (sounds small, but remember it's going to be an array of tidal turbines). The trial phase is going to be running until the end of 2010, when construction of the tidal power plant will officially begin. Once completed, the power plant will output 150 MW of clean electricity, which is enough for supplying about 100,000 average households.

It is estimated that the energy potential that could be harnessed from the seas worldwide is about 1100 GW. Some optmistic estimates say that about 15% of the world's energy consumption can be satisfied through marine energy.

[source: Voith, image: Voith]


Cavico signs additional contract for hydropower project in Vietnam

February 15th, 2010 | Posted in Hydro

Cavico, the Vietnamese infrastructure development company, has signed an additional contract for the Hua Na Hydropower plant with Lilama, a state owned company operated and owned by the Vietnamese Ministry of Construction.

The company is expecting to receive about USD 12 million in revenue for this contract. Under ther terms, Cavico is to construct the sub headrace tunnel No. 2, a water diversion tunnel and a surge sharp tank, all key components in this hydropower project (and other projects involving a dam). The power plant is going to be a twin-turbine facility and is expected to generate as much as 180 MW of clean electricity. The power plant will contribute to the growing energy market in Vietnam, supplying more electricity to the country's grid.

Hua Na Hydropower plant is expected to become operational in about five years.

[source: Cavico]

China Hydroelectric Corporation received USD 440 million loan to acquire small hydroelectric projects

February 15th, 2010 | Posted in Hydro

The Bank of China has approved a USD 440 million loan to the China Hydroelectric Corporation (CHC). The company is planning to acquire small hydroelectric projects.

Given the fact that some Chinese sectors lack debt financing, and the recently announced limitaton of access to debt financing, CHC has everything to cheer about.

Even though there was no mention of further plans for CHC involving small hydro, we can guess the acquisition plans will result in existing small hydropower potential refurbishment and the development of new locations. Small hydro is an ideal source of energy supply in remote areas, where there is significant hydroenergy potential (small river, etc), because it gives a fairly steady supply to the local communities, many of which are still not connecte to the national power grid.

[source: press release]

Fortum and Seabased Industry getting investment grant from Swedish Energy Agency for wave power project

February 15th, 2010 | Posted in Hydro

Fortum and Seabased Industry's request for an investment grant has been approved by the Swedish Energy Agency. The grant is for a planned full-scale wave power project to be developed near Smögen, in Sweden. The investment amount is about EUR 14 million, with the total investment in the project at about EUR 25 million.

Fortum Power has already applied for permits from the Swedish Environmental Court to build electrical grid connections. Additionally, the company has started planning for concession applications.

[source: Fortum]

Acciona to lead a consortium of 17 European organizations in marine energy research

February 15th, 2010 | Posted in Hydro Wind

Acciona is going to lead a consortium of some 17 organizations from 12 countries in Europe in a reasearch project called "The Marina Platform" (MARINA = marine Renewable Integration Application) which is to look into the various integration possibilities of marine energy sources into the power grid. The organizations include universities, technology centers and companies.

The Marina project comes into existence under the 7th Framework Program for research and development of the European Union. The EU Commission is contributing about EUR 8.7 million, with additional resources coming from all the other participants in the project.

The main goal of the project is to find ways to develop deepwater structures that can harness the energy from wind, wave, tidal and ocean current resources. Starting now, and until June 2014, the consortium will analyze various aspects of integration of wind and wave/tidal energy on platforms located in deep water (deeper than 40 meters), which are to be located several miles off the coast.

The result of this research is expected to be an increase of useable renewable energy coming from the sea, increasing its stake in the overall energy supply mix. At the same time, the project is hoped to achieve synergies between different types of energies in order to lower costs and help these technologies become economically viable.

The parties involved in the consortium come from a multidisciplinary background. Some of the bigger companies involved include DONG Energy (Denmark), a long time renewable energy developer, especially in the field of offshore wind energy. Then there is also Statoil (Norway), a leader in offshore oil and gas production, as well as being a pioneer in offshore wind having installed the first floating wind turbine. Some of the academic institution involved are the University of Edinburgh (Scotland) and École Central de Nantes (France), as well as other universities from Portugal, Greece, Ireland. Among the technology centers are the well known Risoe DTU (Denmark), Fraunhofer IWES (Germany), Tecnalia Robotiker (Spain).

The Marina Platform is regarded as a strategic project for Europe, an important part in the overall effort to achieve 20% renewables by 2020, a goal set by the EU. Even though there are very large scale offshore wind energy projects in the pipeline, wind alone will not be able to supply all the renewable energy necessary to reach the RE goal for 2020, so integration with other offshore technologies is necessary. Deep water marine energy is going to play an important part in this quest, especially since there is a tremendous untapped marine energy potential at various locations in Europe.

[source: Acciona, image: Acciona]

Nigerian hydropower plant project approved

February 9th, 2010 | Posted in Hydro

According to local media, the hydropower project planned in the Kaduna State in Nigeria has been approved. The news came right after the country has entered into an energy crisis from shortages of gas, resulting in four power plants getting shut down.

The dam project built for the purpose of water supply, has now been reevaluated to show potential for harnessing hydroenergy and producing electricity. Most of the country's power generating capacity comes from thermal plants which burn gas, so there is a need for diversification in the energy sector in order to ensure a more secure supply of electricity in the coming years.

In this context, Nigeria is pursuing several power projects including wind, natural gas, as well as the National Integrated Power Projects, all totalling in about 1345 MW of power generating capacity. The country's goal is to reach the target of 6000 MW no later than March this year.

[source: Afrol]

Aquamarine Power developing Oyster 2 – the second generation wave energy device

February 3rd, 2010 | Posted in Hydro
Oyster deployed at sea.

Oyster deployed at sea.

Aquamarine Power has received a financial boost receiving GBP 5.1 million of public funding which will be used to manufacture the Oyster 2, second generation wave energy device. Later this year, Oyster 2 will be completed and installed for testing at the European Marine Energy Center (EMEC) in Orkney, Scotland.

The grant comes from Marine Renewables Proving Funding, which is a GBP 22 million initiative by the UK government, managed by the Carbon Trust.

The first generation Oyster has been successfully installed and connected to the power grid in Orkney, supplying 315 kW of clean electricity. The device is generating data, which will be used for the coming project of three interconnected Oyster 2 devices, powering a 2.5 MW hydropower facility. Oyster 2 features a new design, which is supposed to increase performance and efficiency, capturing more ocean energy and producing more power per ton of steel used. It is designed to be modular, making it suitable for mass production.

[source: Aquamarine Power, image: Aquamarine Power]

New tidal power device to be installed and tested in Scotland

February 3rd, 2010 | Posted in Hydro
The HS1000 computer rendering.

The HS1000 computer rendering.

Hammerfest Strøm UK, the subsidiary of the Norwegian tidal power developer Hammerfest Strøm AS, announced it has received GBP 3.9 million as a grant from the Carbon Trust for the construction and development of a 1 MW tidal power device at the testing facility in Orkney, Scotland. The device will be test at the European Marine Energy Center (EMEC). The HS1000 is expected to be fully operational by 2011.

Design and pre-engineering has been completed and is now tendering the fabrication and installation of the device. After the planned test period, the company is to collaborate with ScottishPower Renewables on developing a 10 MW power plant based on the HS1000, to be located in the Sound of Islay, and completed by 2012. This will then become the largest demo tidal power project in the world, putting ScottishPower Renewables in the lead for global tidal power development.

[source: ScottishPower Renewables, image: Hammerfest Strøm]

Brazilian government issues license for controversial 11 GW hydropower mega-project in the Amazon

February 3rd, 2010 | Posted in Hydro

Two days ago the Brazilian government has granted the preliminary license for the hydropower project to planned in the middle of the Amazon, on the Xingu River. The new mega-hydropower plant, Belo Monte, to have about 11 GW of installed capacity, has been been granted the preliminary license based on the resolution of about 40 conditions covering issues related to water quality, wildlife, sanitation, local population, social compensation and rehab of degraded areas, to name a few. One of the major changes in the design of the project is the reduction of flooded areas upstream from the dam.

The preliminary license, however, doesn't allow any developments to begin, but simply allows the auction for the project. If developed and completed, it will be the third largest hydropower project in the world, and the second largest in Brazil. The project will have two water accumulations, both at about 516 km2 in area. The project represents an investment of about USD 12.3-17.5 billion, with the BNDES bank being the main financer of the project, with about a third of the projects total cost.

xingu-river-internationalrivers.org

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New ways to predict water flow could help hydroelectric industry get the most out of hydropower plants

January 21st, 2010 | Posted in Hydro

dam-statkraftOne of the greatest problems faced by the hydroelectric industry is predicting the amount of water flow on a given location annually. This is one of the main factors which determines almost every aspect of a hydropower project, starting from dam placement and design to the choice of the conversion machine. A typical hydropower project costs somewhere in the tens of millions of dollars, so carefull and precise assessment of the hydropotential which is to be harnessed is of utmost importance. Probably the most vulnerable hydropower projects are those with dams, where the operator accumulates water, and uses it over time to achieve a pretty much constant supply of electricity. Knowing the changes in flows more precisely and with greater certainty, would greatly improve the operators' ability to regulate the volume of accumulated water spent to maintain constant electricity production, without overspending the accumulation.

In this context, researchers at the Lund University School of Engineering (Sweden) are working on a new model for assessing and predicting water flows. Their idea is to combine global climate models and local measurement data. This way the researchers have been able to make four-month forecasts that are twice as reliable than other methods for run-off forecasts. The model is to be tested by Statkraft in Norway.

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