Petra Halvorsen

Petra Halvorsen

Energy & E-Mobility Cost Analyst

Petra analyses European and North American retail power markets and electric-vehicle running costs for ChargeCostLab. Her work reconciles regulator data, utility tariffs, charging-operator rate sheets and manufacturer specifications into figures drivers can act on. She does not accept payment from charging networks, charger manufacturers or energy suppliers, and every calculation here is reproducible from the cited primary sources.

Areas of expertise

  • EV charging costs
  • Tesla Supercharger pricing
  • Time-of-use electricity tariffs
  • US retail electricity markets

Articles by Petra Halvorsen

Incentives & Solar13 min read

SCE Charge Ready Home Rebate Ends 30 June 2026 — Up to $4,200 for SoCal EV Owners

Southern California Edison's Charge Ready Home rebate pays up to $4,200 toward the panel upgrade and wiring for a home EV charger — up to $2,100 in a disadvantaged community — and it closes 30 June 2026. Here's who qualifies, what it covers (and what it doesn't), how to stack it with the federal §30C credit before the same deadline, and how to act in the days left.

5 sources
Public & Networks18 min read

Public EV Charging Network Cost Comparison (US 2026): What You Pay Per kWh, and When a Membership Actually Saves Money

US public EV charging in 2026: DC fast charging runs about $0.30–$0.60/kWh ad-hoc versus ~$0.17 at home. Tesla Superchargers are usually cheapest and now open to most brands via NACS. We compare every major network, idle and session fees, and the exact monthly kWh where a membership pays off.

15 sources