шельфовая(о турбинах, мощности в ветроэнергетике, не расположенных на суше: Average off-shore turbine size has been steadily increasing in wind power generation over the past 30 years.RuslanS)
мощность шельфовых электростанций(Due to higher costs and technology constraints, off-shore capacity, approximately 22.6 GW in 2018, is only a small share (about 4 percent) of total installed wind generation capacity.RuslanS)