Global offshore wind O&M market to grow 16% annually to $12bn by 2029 Analysis by Wood Mackenzie shows that Europe will remain the biggest operations and maintenance (O&M) market by region, reaching $6.6bn by 2029 The global offshore wind O&M market is “still young and lacks experience” in long-term O&M issues and failures, according to Wood Mackenzie (Credit: Flickr/mmatsuura) The global offshore wind operations and maintenance (O&M) market is expected to grow 16% annually to $12bn by 2029, says a report. The analysis by energy researcher Wood Mackenzie shows that Europe will remain the biggest O&M market by region, reaching $6.6bn in the next nine years.