Local AM Gwenda Thomas has sided with residents over fears about industrial vehicles driving to the Mynydd y Betws wind farm.
She, like other politicians in the area, has received complaints about the access road on the A474 near Cwmgors.
Mrs Thomas said traffic concerns have also been raised about a new anaerobic digestion plant planned for a landfill site at Pwllfawatkin, near Pontardawe.
The Labour AM, of Gwaun- cae-Gurwen, said in letter to Neath Port Talbot Council chief executive Steven Phillips: “I am receiving an increasing number of complaints in regard to difficulties that are being caused in the vicinity of the works associated with the building of the access road to Mynydd y Betws wind farm.
“People are also starting to show concern in regard to the planning application for the anaerobic digestion plant.
“I am now beginning to feel that the prevailing opinion is enough is enough and it is now time to consider the cumulative effects of operations that affect the community of Gwaun-cae-Gurwen.”
Mrs Thomas added: “I feel I must now call for an official community impact assessment of combined operations.”
She called for a community impact assessment of the combined works in the area.