Engineering walkthrough for NJ commercial solar — feasibility, structural, electrical, interconnection design. PE-stamped deliverables, utility coordination.

Seven questions to ask any NJ commercial solar contractor before contracting. Engineering credentials, utility experience, references, financing structures.

Real commercial solar payback math for NJ: federal 30% ITC, MACRS, NJ SuSI, NJESI stacked on a 250 kW system. Typical 4-6 year payback explained.