SOLAR AND CLEAN FUELS US CIRCULAR ECONOMY
these approaches to recycling commercially viable. Meanwhile, decommissioned capacity is set to increase six-fold between 2020 and 2030: 1.2 million blades will be disposed of in the US by 2050, while 72,000 utility-scale turbines were installed. The estimated cost of disposal by 2050 is US$25 billion. The decommissioning of turbines is the renewable energy industry’s primary and most significant waste stream. After twenty-five years, blades are sometimes shredded and used as filling in cement or burned, but they are most often buried in landfills. This has remained the most affordable and convenient option. Consequently, by 2050, there will be more than 40 million tons of landfill waste from wind turbine blades. Wind turbine blades entering the waste stream over the next 20 years will come predominantly from turbines already in operation. The U.S. Wind Turbine Database (USWTDB) provides a comprehensive list of nationwide turbines. As of April 2020, 63,794 turbines, ranging in capacity from 50 kW up to 6 MW, were installed between 1981 and 2020. An estimated 400,000 tons of turbine blades may be decommissioned annually by 2030 , with this figure projected to double to 800,000 tons by 2050. Blade decommissioning trends reflect the chronological development of wind energy, beginning in Europe and later expanding to regions like the United States and China. Due to this, early research on blade waste has been Europe-focused. Variations in regional policies and waste management practices underscore the need to develop and evaluate blade waste strategies tailored to the U.S. context. The adaptive reuse of decommissioned turbines is highly commercially viable due to existing and evolving ESG reporting requirements, the growth of green finance like green bonds and environmental impact bonds, and changing national legislation. Wind farms in the US can now pay up to $40,000 for the disposal of wind turbine blades. The sheer size and quantity of blades make disposal not only
US $25 bn ͱͷͷΒͷͷͷ tons The estimated cost of disposal of end-of-life wind turbine blades LÞÓäxä The estimated weight of turbine blades that may be decommissioned annually by 2030 p>w}ÕÀi«ÀiVÌi`Ì`ÕLiLÞÓäxä°
a loss of high-quality materials but also take up considerable space, which is economically and environmentally unsustainable. Decommissioning costs for a single turbine can range from $114,000 to $195,000, and disassembly and removal can take 6-24 months due to high-skill labour.
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THE FUTURE OF ENERGY
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