Upgrading from 100A to 200A is the safest way for older Las Vegas homes to handle dual ACs, EV chargers, and pool equipment without constant breaker trips. Learn real 2026 costs ($2,000–$5,500+), Clark County permits, NV Energy coordination, dangers of Federal Pacific & Zinsco panels, and how a new panel pairs with Generac generators. Most jobs finish in one day with power restored by dinner. Licensed Nevada C-2 contractor.