The U.S. Senate may soon extend the production tax credit (PTC) that supports wind farm development beyond 2020. There’s been a recent surge in U.S. seaborne imports of wind turbine equipment of 31.0% year over year in 1Q and by 42.8% in April and May combined. That may reflect reflecting project developers racing to ensure their eligibility for credits if the PTC is not extended. The growth has been led by equipment manufacturer Vestas Wind with 119.8% growth in 1Q and 112.4% in the past two months, while Siemens Gamesa has expanded by 30.5% in the past two months. Solar power is also h...