The bill H. 3968 aims to enhance the protection of South Carolina's critical infrastructure against electromagnetic pulses (EMPs) and geomagnetic disturbances. It proposes the addition of Article 29 to Chapter 1, Title 1 of the South Carolina Code of Laws, which includes definitions for "critical infrastructure" and "electromagnetic pulse." The South Carolina Emergency Management Division (SCEMD) is tasked with creating a detailed plan to harden critical infrastructure against these threats and to provide alternative energy sources in case of prolonged grid failure. This plan must be distributed to all municipalities by January 1, 2026. Additionally, electrical utility distributors are required to offer programs for residential customers seeking EMP protection, allowing for installation and payment plans through monthly utility bills.

Furthermore, the bill establishes that the General Assembly will allocate multiyear funding starting in the 2025-2026 Appropriations Act to support critical infrastructure entities in obtaining EMP protection and alternative power sources. Municipalities or entities that comply with the SCEMD's plan within one year will be eligible for grants to assist with funding. The act will take effect upon approval by the Governor.