Dana Whitfield

Home Energy & EV Cost Analyst

Dana analyses US residential electricity rates and electric-vehicle running costs for ChargeCostLab. Her work reconciles utility tariff sheets, federal energy data and the National Electrical Code into figures and decisions a homeowner can act on. She does not accept payment from charger makers, electricians or utilities, and every calculation here is reproducible from the cited primary sources.

Areas of expertise

residential electricity rates
EV home charging cost
electrical panel load calculations
NEC 625 and 220.57 EV provisions
time-of-use utility rate plans

Articles by Dana Whitfield

Charging Costs21 min read

Two EVs in One Household (2026): What Charging Both Adds to Your Bill - and Whether You Need a Panel Upgrade

What it really costs to charge two electric cars at home in 2026, how much they add to your monthly bill, and whether a second EV forces an electrical panel upgrade - on EIA, FHWA, DOE and NEC data.

Dana WhitfieldHome Energy & EV Cost Analyst30 Jun 202637 sources