Methodology
This page explains how Eldrivo calculates charging-cost estimates, range-related scenarios, and EV-vs-gas comparisons.
Last reviewed: February 22, 2026
Core charging cost formula
annual_cost = (annual_kWh_home x home_rate) + (annual_kWh_fast x home_rate x fast_multiplier)
annual_kWh = (vehicle_efficiency_kWh_per_100km / 100) x annual_distance_km
The calculator uses user inputs first. Template pages may also show example outputs based on standard assumptions so users can compare pages consistently.
Standard assumptions used in example outputs
| Annual driving distance (US examples) | 12,500 miles (20,000 km) |
| Home charging share (default examples) | 80% |
| Fast charging price multiplier | 1.8x home rate |
| Reference US electricity rate | $0.16/kWh |
| Reference US gasoline price (comparison examples) | $3.50/gallon |
Data sources and page generation
Eldrivo combines structured vehicle data, electricity price scenarios, and deterministic calculator formulas. Pages are generated from templates so users can compare results consistently across models and rate levels.
Programmatic pages include page-specific values (vehicle efficiency, battery size, charging speed, rate level, regional hints, and examples) plus calculator-driven outputs. We avoid publishing placeholder pages with no usable calculations.
Limitations
- Actual utility bills may include fixed fees, tiered pricing, taxes, or demand charges.
- Public charging rates vary by network, location, membership, and time of day.
- Vehicle efficiency changes with weather, speed, terrain, tire pressure, and driving style.
- Trim-level differences can change battery size, charging speed, and range.
How to verify a page result
Enter your own electricity rate, annual mileage, and charging mix in the calculators to replace the default example assumptions shown on content pages.
For publishing and review standards, see our editorial policy. For site background, visit about Eldrivo.