Ports in Scotland and England will become power generators under a plan by Scottish and Southern Energy, with port operator Forth Ports.
Under a venture called Forth Energy, the companies will invest in the generation and distribution of renewable energy from all Forth Port sites.
In some ports, projects will increase traffic with sustainable materials, such as feedstock, being brought into port itself.
Onshore and offshore wind and biomass will be used with some projects estimated to generate 150MW.
The Port of Tilbury will be home to the first project – a 2MW onshore wind turbine costing £12m.
The project will feed in to Scotland’s renewable energy strategy, making the ports more sustainable and providing 200 permanent engineering jobs.