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Canvus, a company based in Ohio, has created outdoor furniture from decommissioned wind turbine blades. Top right, wind turbine blades in a field in Sweetwater, Texas (Canvus/Getty) |
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Renewable energy is rolling out at a record-breaking pace with billions of dollars being invested in new wind farms, solar arrays and battery storage. In the United States, the wind industry now generates enough electricity to power more than 43 million homes, according to the Department of Energy, with more than 70,000 turbines spinning across 43 states.
But while it is one of the cheapest and cleanest energy sources, there is a growing problem. Most of a wind turbine can be reused but its enormous fiberglass blades are difficult to dispose of when they reach the end of a 20-25 year life span.
This has led to vast graveyards of these monster pieces of machinery. It's estimated that 720,000 tons of blade material will be decommissioned over the next 20 years in the US. Lawsuits are already springing up over the dumping of blades.
Around the world, companies are beginning to figure out ways to resurrect them. In Denmark, gigantic blades have been repurposed as bike sheds. In the west of Ireland, a company called BladeBridge is making pedestrian footbridges and cyclepaths out of sections, while decommissioned blades have been turned into playgrounds in the Netherlands. There is a growing sector in shredding fiberglass material to be added to make cement stronger and more durable.
In northeastern Ohio, a region with deep roots in the iron and steel industries, one company has come up with a quirky but relatively straightforward solution. Canvus cuts the blades into chunks - or "filets" as the company calls them - and transforms them into sturdy, outdoor furniture at their factory near Cleveland.
Since production started in August, thousands of benches, planters and picnic tables have been sold across the US for downtown public spaces, parks and school campuses. Many of the pieces, which weigh 600-800lbs, have been painted by local artists with designs incorporating everything from dragonflies, sunflowers, and constellations of stars, to a pizza slice. Brian Donahue, managing partner at Canvus, described the pieces as "functional art".
"You're sitting in a piece of art, having a cup of coffee with a loved one or a friend, enjoying the view. The artists are phenomenal to work with and it gives them a canvas that they've never painted on before," he told The Independent. "There's no facility like it in the world. It's got a little of the Willy Wonka Chocolate Factory to it. We're doing something that's never been done."
Canvus was founded three years ago by former commodities traders in the renewables industry.
"No one really knew what to do with the fiberglass [blades]," Mr Donahue said. "We view ourselves as partners to the wind companies we worked with, and we knew they were struggling with the problem. The PR was awful [from] burying all these blades in the ground. Yes, they are difficult to deal and some people just view them as trash but it's a commodity. Instead of finding a marketplace, we created one of our own."
The company name is drawn from the idea of "a canvas for all of us", and Mr Donahue says that the goal is to make this a solution for the global wind industry. They are particularly adept at using the awkward "root end" sections which attach to the turbine. "No one else can destroy that, it can't be ground down because it's too thick," Mr Donahue said.
The process begins by cutting blades, around 170ft (52metres) in length, at the wind farms into smaller 40-50ft sections that are more easily transported on flat-beds to the factory. Most of the inventory currently comes from Iowa, the second largest US wind energy producer after Texas, and are supplied by manufacturers, wind farm owners or construction companies responsible for blade disposal.
"It's not too challenging to get the raw material," Mr Donahue said. "There are times when we're paid to take it based on priority situations, or it's just delivered to us for free, but it's a case-by-case basis."
At the Ohio facility, a special marble-countertop cutting tool, sourced in Italy, is roped around the sections to cut the "filets". They end up in an array of sizes and shapes due to the taper of the blade. The company doesn't alter the shapes after they are cut, meaning that it's a low-energy intensive process.
Next, the pieces are cleaned of the dirt and grease accumulated from their decades in the outdoors. At times, blades are too badly damaged, from a lightning strike for example, and this material is sent off to a partner company to be ground down. The majority of pieces that can be upcycled are then treated by specialized craftsmen who start by repairing scars on the blades that come from hailstones or being dragged along the ground.
The edges are sealed to protect from glass or wooden splinters, and then the product is smoothed, similar to the process in an autobody repair shop. The benches are made from composite lumber incorporating various recycled plastics. The final step is a coat of paint in a neutral colour, and if an artist is getting involved, then primer, too.
Around 20 Cleveland artists have created original designs, some of which remain in the city, including at the Great Lakes Science Center, and Every Child's Playground in Avon. The city of Austin, Texas recently placed an order which will be beautified by a group of local artists.
While the company currently deals in blades from land-based wind farms, Mr Donahue said the blades used in offshore facilities, which are around 350ft (107m), wouldn't be a problem. "As long as they get them to the shoreline, we can cut them up just like any other blade," he said.
It's also a source material that won't be running out of any time soon. Between 3,000 and 8,000 blades are taken down every year in the US, and thanks to $370bn in clean energy investment from the US government's Inflation Reduction Act, it's estimated that this number will soar to more than 10,000 from 2025 to 2030.
Read the full article here
More climate news this week from The Independent
John Kerry's successor as the United States top climate envoy has been announced. President Joe Biden named senior adviser, John Podesta, as Secretary Kerry's replacement on Wednesday. A veteran Democratic operative, Mr Podesta, 75, will begin his new role leading the Biden administration's international climate policy in the spring.
California was drenched by heavy rain on Thursday as the first of two atmospheric rivers slammed the West Coast. The second system is expected to reach Southern California sometime on Sunday, beginning a "lengthy storm cycle'' that could bring up to four inches of rain at low elevations, and possibly twice as much in mountain areas. More than 20 million Californians are under weather alerts.
Officials in Spain's northeast region of Catalonia declared a drought emergency on Thursday, with reservoirs that serve 6 million people, including the population of Barcelona, at under 16 per cent of their capacity, a historic low.
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