"Energy Security and Affordability Act"; requires BPU to consider energy security, diversity, and affordability when preparing Energy Master Plan and perform economic and ratepayer impact analysis of energy generation projects and Energy Master Plan.

This bill requires New Jersey's Board of Public Utilities (BPU) to prioritize energy security, diversity, and affordability when updating the state's Energy Master Plan. It mandates the BPU to conduct detailed cost and impact analyses for all energy generation projects and the Master Plan itself, including breakdowns of financial effects on ratepayers, state/local governments, and infrastructure costs. The plan must limit intermittent energy sources (like wind/solar) to no more than 50% of the state's energy portfolio and prioritize in-state energy generation to reduce subsidies for out-of-state sources. These changes directly affect the BPU, ratepayers (through potential cost impacts), and energy developers (requiring pre-approval analyses), while ensuring public transparency via online analysis publications and annual committee testimony.