The phrase "new transmission" refers to a brand new system that helps to send information, signals, or messages from one place to another. Full definition
So we are talking about potentially tens of thousands of miles of new transmission lines to ultimately move large amounts of wind, solar and other resources to loads. (scientificamerican.com)
Building new transmission capacity doesn't necessarily mean that more renewable electricity will be integrated into the grid. (corporateknights.com)
Investment in new transmission capacity may also be required to avoid price spikes or even failure of supply in a dry year. (iea.org)