Provide requirements for electric suppliers relating to dispatchable electricity capacity

LB 1172 requires Nebraska's electric suppliers (including public power districts, cooperatives, and municipalities with power systems) to maintain at least 75% of their electricity capacity from "dispatchable" sources - electricity that can be quickly supplied on demand, like gas plants, rather than weather-dependent sources. Suppliers must annually certify compliance with this rule to the Nebraska Power Review Board and submit a compliance plan within 60 days if they fall short. The bill defines key terms like "dispatchable electricity" and "capacity" to clarify the requirement, while protecting related communications as confidential until a facility closure decision is publicly announced. It does not apply to closures decided before April 2024.