TenneT TSO B.V. (Netherlands), Energinet (Denmark) and TenneT TSO GmbH (Germany) today signed a trilateral agreement for the development of a large renewable European electricity system in the North Sea. This so-called ‘North Sea Wind Power Hub’ has the potential to supply 70 to 100 million Europeans with renewable energy by 2050.
This important step towards a broad consortium was taken in the presence of the European Commissioner for an Energy Union, Maroš Šefčovič. Mel Kroon, CEO of TenneT, and Torben Glar Nielsen, CTO of Energinet, signed an agreement aimed at investigating the feasibility of one or more ‘Power Link Islands’.
[tennet.eu] – Three TSOs sign agreement on North Sea Wind Power Hub
[tennet.eu] – Cooperation European Transmission System Operators to develop North Sea Wind Power Hub
[offshorewind.biz] – TSOs Sign North Sea Wind Power Hub Deal
TenneT and Energinet, as well as any other parties that want to join, will spend a few years on investigating the details and potential of one or more Power Link Islands. If the TSOs decide to go ahead with the project, a Power Link Island could be developed by approximately 2035
Estimated size: 6.5 km2
Estimated cost: 1.25 billion euro
[cphpost.dk] – Denmark looking into building North Sea wind energy island
[greentechmedia.com] – Denmark, Germany and the Netherlands Want to Build an Island Hub to Support 100GW of Offshore Wind
The island might feature power-to-gas as a storage technique to utilize high volumes of wind generation, said Rasmussen. The North Sea is home to a sophisticated network of gas pipelines, which could help bring wind-generated gas to countries around Europe.
“A part of this work will be to include power-to-gas technology and other storage technologies,” he said. “What, when [and] how much is what we will look into further. It is too early to go into details.”
[source] Dutch grid provider Tennet wants to install 5 of these able to convert 3.5 GW wind AC into DC in order to connect planned offshore wind parks to the Dutch grid.
[source] Dolwin “socket” already installed at German part of the Northsea by Tennet.
A rotating ring containing many generators rather than a traditional axis and single generator plus gear box. Turbine can be constructed with low weight carbon fiber, low maintenance and long life span.
A company in Winschoten, the Netherlands, patented a new wind turbine design, with which it claims it can generate the same amount of electricity with lighter wind turbines with a rotating ring rather than an axis, causing enormous wind forces to be absorbed by a larger surface, enabling lighter design. Under offshore conditions a Megawindforce turbine of 135 m tip height would generate the same power as a conventional 200 m turbine. Additionally the new turbine design is supposed to begin to generate energy at lower wind speeds by gradually switching on ever more generators inside the ring with increasing wind speed. Because of this variable load principle the turbine can operate at lower rotational speeds which lowers the forces, enabling a staggering 80% reduction of the overall weight and proportional lower cost.
Cost claim: 3 cent per kWh.
A prototype is being built in the Groningen province this year, financially supported by Groningen authorities.
Wind parks in the Dutch province of Gelderland didn’t do very well in 2016 as there was 20% less wind in the province, the 3rd or 4th worst wind year in a century. And the first months of 2017 weren’t very good either. On a positive note 2015 was a good year.
Solution: go offshore.
Tests have been completed in the German Bodensee with a 20 ton, 3 meter concrete hollow sphere, sunk to the bottom of the lake. When water flows into the sphere, electricity can be generated. Alternatively, wind power can be used to empty the sphere again and as such (virtually) load the battery again. Future dimensions are thought to be 20 meter or lager (4,200 m3 volume). Assuming 100 meter of water above the sphere, that’s an amount of storage energy 1167 kWh or 86 Tesla Powerwall 2.
[spiegel.de] – Riesige Betonkugel speichert Energie
The report underscores that SEE possesses vast technical renewable energy potential – equal to some 740 GW.” This renewable energy potential is dominated by wind and solar. “The region’s wind energy (532 GW) and solar PV (120 GW) potential is largely untapped, and 127 GW of this overall renewable energy potential could be implemented in a cost-competitive way today.”
[irena.org] – Cost-competitive renewable power generation: Potential across South East Europe (pdf 124p)
[cleantechnica.com] – 790 Gigawatts of Cost-Cutting Renewable Energy Potential in South East Europe
|Name||Diam.||Power||Firm||Country of Origin|
|V164||164 m||8 MW+||Vestas||Denmark|
|AD-180||180 m||8 MW||Adwen||France|
|SWT-8.0-154||154 m||8 MW||Siemens||Denmark|
|E-126||127 m||7.5 MW||Enercon||Germany|
|SCD||140 m||6 MW||Ming Yang||China|
|152||126/152 m||6.2 MW||Senvion||Germany|
|Haliade||151 m||6 MW||Alstom||Spain|
|SL6000||128/155 m||6 MW||Sinovel||China|
|AMSC||140 m||5.5 MW||Dongfang/Hyundai||China|
|AD5-135||135 m||5 MW||Adwen||France|
The Dutch national energy bureau ECN says that by 2023, the cost of offshore wind energy could be reduced with 40%. Way to achieve this:
This would mean that the price of our virtual barrel of oil equivalent, calculated here, would be reduced to $6/barrel (if that wind energy is applied for mobility purposes).
[flow-offshore.nl] – FLOW, Competitive Through Cooperation (pdf 88p, Eng.)
[flow-offshore.nl] – FLOW, Concurrerend Door Samenwerking (pdf 88p, Ned.)
[windenergiecourant.nl] – ECN: 40 procent goedkoper offshore wind haalbaar
Halleluja video (turn down the volume)
Yet another wind park? This one is different as it is being realized thanks to the efforts of (4000) private persons in the Dutch province of Zeeland.
34 turbines will be producing at least 100 MW for 100,000 households.
Start project 2016. Operational: 2019.
Multinationals buying electricity: Akzo, DSM, Google and Philips.
[source] Partitioning North Sea
A considerable part of Dutch wealth since 1960 was based on the natural gas field in Slochteren, once the #9 gas field in the world. That gas field is now running on empty. So what’s going to happen to the Cloggies and their wealth? Dire poverty? Not so fast.
Post-stamp country Holland measures 42k km2, think Kentucky. Its share of the North Sea however is larger: 57k km2… and has the potential to become the Dutch new energy province, replacing Slochteren and the coal mines of the Limburg province, closed down in the seventies.
Let’s make some simple back-of-the-envelope type of calculations to get an idea of the potential of this new energy province.
Nordex hat die mit 230 Metern Gesamthöhe weltweit größte Windturbine errichtet. Außerdem hat der Hersteller 16 alte Windkraftanlagen des Typs N60 gegen neun Turbinen des Typs N117 mit je drei Megawatt ausgetauscht.
Tallest wind turbine installed to date world-wide (230 m between ground and vertical rotor blade tip).
Offshore wind farms are designed for a life expectancy of 20 years. The truth is that nobody really knows how long they can really last as there are no decommissioned offshore projects yet. Chances are that this 20 years is an over-conservative estimate and that the real economic life of at least the monopiles and tower could be much longer than designed for. If you realize that nacelle and blades constitute merely 15-20% of the total cost of a wind-turbine and monopile and tower the remaining 80-85%, it is easy to see that a dramatic lifespan increase of the latter beyond 20 years will equally dramatically reduce overall wind-turbine (and kWh) cost. Let’s assume that monopile and tower can exist for 60 years… that would mean that the cost of the turbine per year would decrease from 100 units in 20 years to (3 x 20 + 80) / 3 = 47 units, assuming tower + monopile cost of 80 of the total wind turbine price. That’s 47% of the per year cost.
[analysis.windenergyupdate.com] – Offshore wind farm lifetime extensions: why the ‘beyond 2020’ energy policy dialogue must start now
The agreed 20-year design lifetime means engineers can design to meet one consistent requirement, ensuring that new components can be guaranteed to work reliably and be insured for that period… For wind farms onshore, it may be cost-effective to simply replace nacelles and blades at the end of a 20-year design life, for about 15 to 20 percent of the cost of a new turbine. Because of space constraints and permitting expense, reusing the same wind farm area and layout makes sense, and turbine size cannot scale up much more for future land based turbines, for social reasons… Offshore wind is trickier, and complicating factors limit the potential for repowering.
Anecdotal “evidence” of wind energy longevity: the oldest windmill in the Netherlands, build long before America was ever heard off (1441 or older), still working fine (maintenance is everything). Open and working every Wednesday in Zeddam.
[source] Parisian icon Eiffel tower, a steel structure of meanwhile 128 years old. No reason to assume why it can’t last for another 2-3 centuries or more. The maritime environment is admittedly harsher than Paris, but still… 20 years?
In Germany there are 26,500 wind installations (42 GW onshore and 4 GW offshore), with merely 7 accidents per year. Mostly rotor blades broken off or fire after a thunderbolt. Over the last four weeks however no less than four towers fell over. Two towers were 16 and 18 years old. In Saxony a broken rotor blade initiated a chain reaction. The machines are designed to last 20 years.
*** UPDATE *** March 10 2017 – probable cause: failing electronic pitch control. These were all older installations from 1999-2002. The rotor blades were turned out of the wind too late. In another case the sensor was defect. An estimated 1800 turbines of these types are still operational in Germany. Producer: DeWind (D4) and Tacke 1,5 (GE 1,5).
[spiegel.de] – Das Geheimnis der umgeknickten Windräder
Windpark Westermeerwind – largest power contributor Dutch Rail
By 2017, all of our trains will run on sustainable energy. This will provide passengers with access to climate-neutral travel over longer distances… The electricity will be generated by newly constructed wind farms belonging to our energy supplier Eneco. This will also stimulate the energy market and help the growth of sustainable energy providers. By 2017, all electric trains in the Netherlands will run on sustainable energy.