Analysts Predict Surge in North American Wind Power O&M Costs as Tax Credits Phase Out

Operations and maintenance (O&M) expenses for wind power assets will cost the industry about $7.5 billion annually by 2021, according new analysis from IHS Markit. The firm estimates the current North American wind O&M market is valued at approximately $5-6 billion annually, but is expected to exceed $8.3 billion by 2027, an increase of nearly 40 percent.

In 2021, the industry will reach a critical turning point, as operating expenditure (OPEX) for the North American (United States and Canada) wind industry will, for the first time, eclipse capital expenditure (CAPEX), according to a report that looks at O&M costs for North American wind power plants performed by IHS.

“The O&M market for North American wind installations is a steadily growing industry,” said Maxwell Cohen, associate director at IHS Markit, and co-author of the report.

“Growth is driven both by more turbines and—as those turbines age—more spending per turbine. The North American wind turbine fleet is aging overall – the average age of installed capacity will rise from 7 years in 2018, to 14 years in 2030. As projects age, they cost more, making the O&M business even more intriguing than it is today, and many players are expanding into this sector of the business,” Cohen said. 

Currently, more than 50,000 utility-scale wind turbines comprising nearly 100,000 megawatts (MW) of generating capacity are installed in 42 U.S. states and 12 Canadian provinces and territories. By the year 2028, IHS Markit expects those numbers to increase to more than 75,000 wind turbines with a capacity of more than 150,000 MW. But most of this growth will come in the next few years before federal tax credits expire in the early 2020s. As that takes place, wind capacity additions will decelerate. But OPEX will continue to grow, and as a result, is expected to eclipse CAPEX in 2021.

“The transition from CAPEX to OPEX is significant, and the wind industry will need to shift its focus away from infrastructure build and toward providing services and minimizing costs at existing projects,” Cohen said.

One of the key findings from the benchmarking study is that larger, newer wind projects have O&M costs averaging 25 percent less per megawatt-hour (MWh) than ones using smaller turbines installed before 2010.  

“Not all projects are created equal, and larger projects’ costs increase less rapidly,” said Michael McNulty, research associate at IHS Markit and co-author of the report.

“As we build on previous years’ benchmarking analyses, we’ve concluded the O&M costs per megawatt of larger projects are not only lower compared to smaller projects, but also demonstrate more cost stability as they age. Most of these larger projects benefit from economies of scale, potential procurement efficiencies, and lower exposure to individual turbine failures.”

McNulty said another key finding is that first-year O&M costs are on the decline as the industry continues to learn. “First-year costs fell from an average of $46,000 per installed megawatt during 2008 to 2013, to $38,000 per megawatt during 2014 to 2017,” McNulty said. “Average annual O&M costs generally start low in the first year of operations. There is a steady increase in annual costs per-megawatt after about three years, and a significant increase in per-megawatt-hour costs starting in year 10, when costs accelerate and performance deteriorates. Large projects are not immune to this trend, though the effect appears more modest for them,” McNulty said.

However, McNulty cautioned there can be a great disparity from project to project with age, location, and O&M strategy all being important factors. “The dataset shows differences in key performance indices of projects in different regions and from different turbine models.”

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Jennifer Runyon has been studying and reporting about the world's transition to clean energy since 2007. As editor of the world's largest renewable energy publication, Renewable Energy World, she observed, interviewed experts about, and reported on major clean energy milestones including Germany's explosive growth of solar PV, the formation and development of the U.S. onshore wind industry, the U.K. offshore wind boom, China's solar manufacturing dominance, the rise of energy storage, the changing landscape for utilities and grid operators and much, much, more. Today, in addition to managing content on POWERGRID International, she also serves as the conference advisory committee chair for DISTRIBUTECH, a globally recognized conference for the transmission and distribution industry. You can reach her at

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