French liner operator CMA CGM Group and Shanghai International Port Group will collaborate on a project to scale up use of “cold ironing” technology, the use of onshore power supply for container ships at the Port of Shanghai.

The two companies signed the long-term strategic collaboration on Thursday. Effective immediately, all fully-fitted CMA CGM container ships calling at Shanghai will use the onshore power connection.

CMA CGM and SIPG completed technical trials of the “cold ironing” facilities of Yangshan Terminal in the Port of Shanghai in November.