Methodology validation: Rate structure, tier breakpoints, and adder percentages validated directly against Georgia Power's official Power and Light Calculator at georgiapower.com. Both PLM (Medium, 30-499 kW demand) and PLL (Large, 500+ kW demand) rate structures are implemented. Tariff selection is automatic based on actual peak demand (pre-BDAF). Results from this tool match the GA Power calculator to the penny across scenarios from 50 kW / 5,000 kWh up to 998 kW / 500,000 kWh.
Peak demand modeling: Tesla Model Y is used as the 2026 reference vehicle (peak ~250 kW brief, average ~150 kW sustained during the 30-minute billing demand window). As 800V / 500 kW-class vehicles penetrate the fleet, the sustained average is modeled rising ~6%/yr to a ~240 kW plateau by the mid-2030s — 500 kW itself is a fleeting peak (a Cybertruck's full V4 session still averages ~150 kW). Cabinet demand scales with how many cars charge simultaneously during peak hour, capped at 998 kW per cabinet (1,996 kW for 2-cabinet sites). Rising fleet speeds also lift the utilization kWh ceiling, at half strength — charge time shrinks but dwell time doesn't.