Thanks in large part to wind and solar energy, not only have German electricity prices paid by consumers skyrocketed over the past years, thus casting a large number of homes into home fuel poverty, but also the supply itself is rapidly becoming precarious and unreliable.
One problem is the stabilization of the power grid in the face of wildly fluctuating wind and solar energy feed-in. The other problem is the mechanical integrity associated the wind turbines themselves. Hat-tip: Gerti Brunthaler at Facebook.
Catastrophic wind turbine failures
Increasingly it is becoming apparent that wind turbines have a way of just collapsing – often without notice – due to mysterious causes. One might suspect mechanical fatigue due to the complex cyclic loading that wind turbines are subjected to. Consequently wind parks are becoming hazardous zones for persons and property in the vicinity – never mind the proven detrimental health effects of infrasound.
One example (of many) of a recent catastrophic turbine failure is reported by the North German Ostesee Zeitung here. According to the article, just 2 days ago, the blade of a wind turbine snapped off unexpectedly, boring itself into the ground. The Ostsee Zeitung writes that local residents were “shocked” and the reason for the collapse is unknown. The online news site writes:
At the time of the accident there was neither a storm nor unusual weather conditions. ‘We are baffled as well,’ says Carlo Schmidt, Managing Director of Windprojekt company, which operates the turbine in question.”
Luckily no one was injured, or killed.
Wind turbine in Sweden fails with “incredible bang”.
Another recent catastrophic failure occurred in Sweden, so reports the Swedish online svt.se news site here.
Forestry machinery operator Erik Karlsson of the Vetlanda municipality heard an “incredible bang” while working on Christmas Eve, but thought nothing of it. Later as went home he discovered that a nearby wind turbine had fallen to the ground across the road. The huge turbine mast had snapped some 15 meters up and the unit came crashing down, the SVT writes. Authorities quickly cordoned off the wind park area. Here as well the cause of the failure is unknown. The wind park has since been designated as a hazardous area: “The public has been asked to keep away.”
These are just two recent examples of many of wind turbine collapses.
Blackouts to prevent blackouts
In addition to catastrophic mechanical failures, wind and solar energy are wreaking havoc on power grid stability, so writes the German online mittelhessen.de here.
The online newssite reports that the future for the residents of Wetzlar may be looking bleak. Why?
If in the future the power goes out, the reason maybe rooted in the energy management act. In order to eliminate the possibility of widespread blackouts, grid operators such as Enwag are obligated to switch off consumers or even entire parts of the city.
These targeted blackouts are necessary, mittelhessen.de writes, because it is the only way left to keep the power grid from over or under-loading. The site tells readers:
The probability of large blackouts is increasing with the strongly growing power generation from wind and sun. Experts have long seen the power grid threatened by this.”
Unfortunately grid operators will have to react very quickly to the power grid fluctuations. The mittelhessen.de reports that “there won’t be any time for operators to make long calculations” and that “there will be only an hour to react”. Just how vulnerable is the power grid in the Wetzlar region? Mittelhessen.de writes:
A chain of seemingly harmless single incidents can in the worst case lead to a domino effect and lead to outages in all connected power networks.”
In plain English: one small problem could lead to a widespread blackout. To keep this from happening, the solution is now to conduct targeted blackouts in an attempt to keep the grid balanced. If you are running a company, or merely working on an important document at your PC, then it’ll just be tough luck. Just use paper and pen, and light up a candle.
Junk energy at a high price. Other countries may wish to think twice before copying the model.
Happy New Year!