Weather Guard Lightning Tech
The Lightning Diverter Problem with GE Vernova Blades
A design that causes massive problems
As wind turbine operators continue to expand their fleets worldwide with larger turbines, bigger generators, and longer blades, the risk of significant lightning damage continues to plague the industry. Lightning is now the leading cause of unplanned turbine downtime for many operators. In years past, OEM warranties or insurance would cover the costs of repairs and business interruption. Those days are gone. OEMs have eliminated lightning damage from warranties and insurance companies are dramatically raising rates, or eliminating coverage, for lightning damage. That leaves operators exposed to millions in repair bills every year.
The SafeReceptor ILPS System
The basic lightning protection systems for LM Wind Power blades has been two small, coin-sized receptors placed on either side of the blade tip. Designated as the SafeReceptor ILPS, the receptors are connected to an insulated metal cable that runs through the center of the blade which connects to the hub, nacelle, tower and eventually earth. Certified to IEC61400-24, the SafeReceptor ILPS has been used on most onshore LM Wind Power blades since 2011.
LM Wind Power would, occasionally, place a special, additional lightning protection feature onto their blades. Patented in 2005, this lightning add-on contained a line of stainless steel cross-shaped buttons in a soft, gray-colored sealant which formed a segmented lightning diverter. As lightning approached a blade, the LM segmented lightning diverter helped guide the lightning to the receptor, lowering the chance of lightning damage to the blade.
LM Wind Power, and eventually TPI Composites, used the LM Wind Power segmented lightning diverter. Most installations of the LM segmented lightning diverter placed the device behind the receptor – using the receptor to block rain and airflow impact. The reason? If the LM Wind Power diverter was directly exposed to the wind and rain it would eventually degrade.
Remarkably, the LM diverter strip was used sparingly, or not at all, on the LM/TPI 56.9m and 62.2m blades. As it turns out, the 56.9m / 62.2m are unusually vulnerable to lightning damage. In a WGLT study of over 900 GE Vernova onshore turbines in Texas and Oklahoma with blades exceeding 50m, the rate of lightning damage was approximately 1 in 5 strikes. The industry standard for lightning damage is roughly 1 in 50 strikes per the IEC standard. That results highlight a gigantic risk for wind turbine operators.
Presumably in response to these high damage rates, GE Vernova has introduced LPS “improvements” to the 56.9m and 62.2m blades. Two additional receptors have been added to the blade approximately 3m from the blade tip. Also, LM Wind Power diverter strips have been added to every receptor; with short pieces behind the tip receptors plus long pieces behind and in front of the two receptors down the blade.
This is a risky decision by the blade designers at GE Vernova. Most lightning strikes occur when blades are pointed upwards towards the sky – and segmented lightning diverters provide maximum protection when they are also pointed towards the sky. GE Vernova placed the LM Wind Power diverters parallel with the airflow over the blade – perpendicular to the sky – which dramatically lowers their lightning protection ability.
Why are the LM Wind Power diverters not oriented upwards towards the storm clouds? Our research indicates that exposing the broad side of the diverter to rain erosion causes the part to fail.
Several years ago, Weather Guard Lightning Tech developed an accelerated rain erosion test rig to mimic rain erosion that appears on aircraft nose radomes and wind turbine blade tips. This test sprays water droplets onto test samples at 135 m/s (300 mph) and has yielded accurate predictions for lifetimes. WGLT examined the durability of the LM Wind Power diverters in our accelerated rain erosion test rig. The results were astonishing. The LM Wind Power diverter failed in under 1 minute for every orientation.
And here are the images of the test articles after rain erosion testing.
Sample 2 Post-Test 90 Degrees to Face of Diverter
Sample 5 Post-Test 0 Degrees to Side
Sample 6 Post-Test 0 Degrees to Leading Edge
Now, what does this mean for the lightning protection for your GE Vernova wind turbine blades with LM Wind Power diverters? You need to monitor the diverters for damage and peeling off the blade. Missing metal segments from a diverter or sections of diverter that have separated from the blade need to repaired or replaced.
What’s the risk? Your blades are susceptible to significant lightning damage which could cost you $$$.
For more information about StrikeTape lightning protection technology and installation services, contact Weather Guard Wind at 1.413.217.1139 or info@wglightning.com.
About Weather Guard Wind: Weather Guard Wind specializes in advanced lightning protection solutions for wind energy applications, with installations protecting turbines worldwide in the most challenging lightning environments.
https://weatherguardwind.com/the-lightning-diverter-problem-with-ge-vernova-blades/
Weather Guard Lightning Tech
Storm Damages ENGIE Wind Farm, Mexico Plans 7 GW
Allen covers a storm that damaged ENGIE’s South Dakota wind farm, Sumitomo exiting two Belgian offshore farms, Envision’s loss in Denmark, and Continental building its own wind farm.
Sign up now for Uptime Tech News, our weekly newsletter on all things wind technology. This episode is sponsored by Weather Guard Lightning Tech. Learn more about Weather Guard’s StrikeTape Wind Turbine LPS retrofit. Follow the show on YouTube, Linkedin and visit Weather Guard on the web. And subscribe to Rosemary’s “Engineering with Rosie” YouTube channel here. Have a question we can answer on the show? Email us!
Happy Monday everyone.
Sometimes … Mother Nature reminds the wind industry who is really in charge. Late last month … hurricane-force winds ripped through Hyde County, South Dakota … tearing into the Triple H Wind Farm operated by French energy giant Engie. One hundred and thirty-one miles per hour … as strong as a Category Four hurricane. More than twenty of the site’s ninety-two turbines … damaged. The two-hundred-fifty-megawatt complex is out of service … and turbine supplier GE Vernova is on-site now … assessing the wreckage. No injuries … but the governor declared a state of emergency. The machines that harvest the wind … taken down by the wind itself.
Now … while one wind farm goes dark in the American plains … ownership is reshuffling across the North Sea. Japan’s Sumitomo Corporation has exited two Belgian offshore wind farms … selling its stakes to joint venture partner Jera Nex BP. That is the partnership between oil major BP and Japan’s largest power generator Jera. Jera Nex BP now has full ownership of the two-hundred-nineteen-megawatt Northwester 2 … and has raised its stake in the one-hundred-sixty-five-megawatt Nobelwind to eighty percent. Both farms operate out of Ostend, Belgium … and have been generating power since 2017 and 2020. Sumitomo walks away … Jera Nex BP doubles down.
Meanwhile … in Denmark … China’s Envision Group is seeing red for the first time in fifteen years. The company’s global innovation center in Silkeborg … a strategic research hub for wind turbine components and advanced manufacturing … posted a loss of just under one-point-three million Danish kroner. That is a swing of more than one hundred fifteen percent from last year’s profit. The culprit is not the technology … it is the currency. The U.S. dollar fell nearly twelve percent against the Danish krone in 2025 … and Envision’s books took the hit. Revenue also dropped eighteen percent … but management says the underlying operations remained stable. The machines still work … the math just changed.
And speaking of money flowing into wind … a Turkish energy company just tapped an unusual source. Aksa Enerji … the largest publicly listed independent power producer in Turkiye … has secured one hundred twenty-four million dollars in financing backed by China’s export credit agency Sinosure. The money will fund a one-hundred-megawatt wind-plus-storage project in the southern province of Mersin. This is the first renewable energy project in Turkiye to receive a license as a storage-integrated facility. Aksa now operates power plants across seven countries … with more than three gigawatts of total capacity. Chinese capital … backing Turkish wind … with battery storage baked in from day one.
Now … here is a story that might surprise you. Continental … the German tyre maker … yes … the tyre company … is building its own wind farm. Three Nordex turbines … each standing two hundred sixty-seven meters tall … right next to its tyre factory in Korbach, Germany. When they are online … those turbines and the factory’s existing solar panels will cover two-thirds of the plant’s electricity demand. Fifty-five gigawatt-hours a year … powering rubber mixing and extrusion lines … directly from the wind. Continental calls it a model for its production sites worldwide. Cheaper power … more predictable costs … and less exposure to volatile energy markets. The wind industry just gained a tyre company as a customer … and a competitor for electrons.
And finally … south of the border. Mexico has eight gigawatts of wind power installed today … more than thirty-three hundred turbines across sixteen states. But the next chapter is already being written. The government plans to add nearly seven gigawatts of new wind capacity this term … part of a broader push for thirty-two gigawatts of new generation overall. More than two gigawatts of wind projects are pending allocation right now … and the industry estimates this next wave could mobilize four to five billion dollars in investment … building thirteen to fourteen new wind farms before the decade is out. The final decisions come in October.
Here is what stands out this week. The wind industry is no longer just selling kilowatt-hours to utilities … it is selling energy independence directly to manufacturers … and that changes the customer base entirely. At the same time … capital for new wind projects is coming from places it never came from before … export credit agencies … cross-border joint ventures … and government allocation programs with billions on the line. The money is there … but so are the risks … currency swings … extreme weather … and the constant reshuffling of who owns what. For wind energy professionals … the takeaway is simple … the industry is growing … but the business model around it is getting more complex by the quarter.
The turbines keep turning.
And that’s the state of the wind industry for the 5th of July 2026. Join us for the Uptime Wind Energy podcast tomorrow.
https://weatherguardwind.com/engie-storm-mexico-gw/
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