Environmental groups said on Thursday they planned to sue the U.S. Environmental Protection Agency for failing to regulate aircraft emissions after a 2016 agency determination that those emissions pose a danger to public health.
A drop in the number of new German wind power projects coming on stream in 2019 and the early 2020s could make it harder to achieve economies of scale and hit investment, according to the country's VDMA mechanical engineering group.
Lockheed Martin Corp hopes to launch a new "flow" battery made of inexpensive, nontoxic materials that can help utilities save money and use more renewable energy, company officials said on Monday.
