Activists banded together Monday to send a message that National Grid’s North Brooklyn gas main is not welcome.

The activists say they are concerned about the safety of the community and the well-being of the planet.

The project, underway since 2017, would bring fracked gas underground through several Brooklyn neighborhoods from Williamsburg to Brownsville.

Activists say when New York State approves and builds fracked gas pipelines, it locks us into decades more of fossil fuel when they say we should be transitioning to renewable energy.

National Grid says it is only improving the current system for existing customers, not bringing in more gas to service more people.

The pipeline’s price tag of close to $200 million and a proposed rate hike for customers are up for review with the state’s Public Service Commission.

The commission confirmed that it’s examining the project with one main goal.