A view of wind turbines from the coast
/ Scroby Sands overseas wind farm, Caister, Great Yarmouth, Norfolk, England.

Picture by: Location Photos/UIG through Getty Images


In November, a Danish property management group called Momentum Gruppen recommissioned 5 turbines at a 20- year-old overseas wind farm situated 4km (2.5 mi) off the coast of Sweden. Momentum bought the wind farm and updated the nacelles, blades, and control systems while leaving the towers, structures, and transmission devices. The turbines were initially ranked to produce 500 kilowatts (kW) each. The upgrades were finished with 600 kW turbine replacement devices.

According to GreenTechMedia, it’s the very first such repowering of an old overseas wind farm. As Europe’s very first overseas turbines age, it represents a possible long-lasting future for Europe’s clean-energy fleet. Although onshore wind farm owners have actually been.
repowering their devices for several years, overseas repowering includes its own technical difficulties.

In 2017, Dong Energy took apart the first-ever modern-day overseas wind farm, integrated in 1991 off the coast of Denmark. It had actually functioned for 25 years. (One turbine was protected for screen at the Danish Museum of Energy.)

Momentum composed in a news release that updating to much better devices at its Swedish wind farm will increase the life time of the existing 5 turbines by more than 15 years, and the upgrades will more than double the anticipated annual output of the farm, from about 5,000 megawatt-hours (MWh) each year to about 11,000 MWh each year.

In Momentum’s news release, CEO Kim Madsen was favorable about the capacity for more repowering: “With the conclusion of this task, Momentum has actually shown that we can help the owners of older turbines with the extension of the life time of their properties, likewise under as tough situations as overseas.”

GreenTechMedia composed that the wind farm’s previous owner wished to ditch the present wind farm and change it with 10 turbines at 5 megawatts (MW) each. When Momentum purchased the task, it customized this strategy, intending to set up 12 four-megawatt turbines. However the transmission extension essential to make that task financially practical was cancelled in 2017, sending out Momentum back to the drawing board. Repowering has actually permitted the owner to continue earning money on its wind farm while working within the existing transmission facilities.

As the earliest wind farms age, repowering is an financial and reasonably environmentally-friendly method for owners to continue earning money on their financial investments. Wind turbines usually have a life expectancy of 20 to 25 years, however another reward to repowering besides changing older devices is that wind turbine innovation has actually enhanced significantly in the last 20 years, so a single turbine can send out far more electrical energy to the grid than it might 20 years back.


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