Powering Your Electric Vehicle with Solar Energy
EV Charging

Powering Your Electric Vehicle with Solar Energy

BlueSky Energy Team
November 28, 2024
8 min read

Powering Your Electric Vehicle with Solar Energy

The combination of solar panels and electric vehicles creates a powerful synergy—drive thousands of miles on free, clean energy from your roof. Here's how to maximize this combination.

The Solar + EV Advantage

Cost Comparison

Traditional Gas Vehicle:

  • Average 12,000 miles/year
  • 25 MPG average
  • $4.50/gallon gas
  • Annual fuel cost: **$2,160**
  • EV Charged from Grid:

  • Average 12,000 miles/year
  • 3.5 miles/kWh efficiency
  • $0.25/kWh average
  • Annual charging cost: **$857**
  • EV Charged from Solar:

  • Average 12,000 miles/year
  • 3.5 miles/kWh efficiency
  • $0.00/kWh (your solar)
  • Annual charging cost: **$0**
  • Lifetime Savings

    Over 10 years of vehicle ownership, solar-powered EV driving saves:

  • vs. Gas: $21,600+
  • vs. Grid charging: $8,570
  • Sizing Your Solar System for EV Charging

    Calculating Your Needs

    The average EV driven 12,000 miles annually needs:

  • 12,000 miles ÷ 3.5 miles/kWh = 3,428 kWh/year
  • 3,428 kWh ÷ 365 days = 9.4 kWh/day
  • Additional Solar Capacity

    To cover EV charging, you'll typically need:

  • 2-3 kW additional solar capacity
  • 6-9 additional panels
  • $4,000-7,000 added system cost (before incentives)
  • Planning for Multiple EVs

    As households transition to multiple EVs, consider sizing your system to accommodate future vehicles.

    EV Charging Options

    Level 1 Charging (120V)

  • Uses standard household outlet
  • 3-5 miles of range per hour
  • Best for: Plug-in hybrids, light daily use
  • No installation required
  • Level 2 Charging (240V)

  • Requires dedicated circuit and EVSE
  • 25-30 miles of range per hour
  • Best for: Daily EV charging, most homeowners
  • Installation cost: $500-2,000
  • Smart Charging Features

    Modern EV chargers offer:

  • Scheduled charging during solar production
  • Integration with home energy management
  • Load balancing with other electrical loads
  • Remote monitoring and control
  • Optimizing Solar + EV Integration

    Charge During Solar Production

    Program your EV to charge during peak solar hours (typically 9am-3pm):

  • Use 100% solar energy
  • Avoid grid electricity costs
  • Maximize self-consumption
  • Time-of-Use Strategies

    If you can't charge during the day:

  • Use battery storage to capture solar
  • Discharge to EV at night
  • Still drive on sunshine
  • Smart Home Integration

    Connect your solar, battery, and EV charger:

  • Automated charging decisions
  • Priority to solar when available
  • Grid backup when needed
  • Battery Storage and EVs

    Home Battery + EV

    A home battery system allows you to:

  • Store daytime solar for evening charging
  • Provide backup power during outages
  • Optimize time-of-use rates
  • Vehicle-to-Home (V2H)

    Some newer EVs can power your home:

  • Use EV battery as backup power
  • Discharge to home during peak rates
  • Emerging technology with growing support
  • Federal and State EV Incentives

    Federal EV Tax Credit

  • Up to $7,500 for qualifying new EVs
  • Income and price limits apply
  • Check eligibility at fueleconomy.gov
  • California Clean Vehicle Rebate

  • Up to $7,500 for qualifying vehicles
  • Income limits apply
  • Can combine with federal credit
  • Utility Programs

    Many utilities offer:

  • EV rate plans with lower overnight rates
  • Charger rebates
  • Special solar + EV programs
  • Installation Considerations

    Electrical Panel Capacity

    EV charging may require:

  • Panel upgrade (if near capacity)
  • Dedicated 50-amp circuit
  • Load management device
  • Charger Placement

    Consider:

  • Proximity to parking location
  • Distance from electrical panel
  • Weather protection
  • Cable management
  • BlueSky Energy EV Solutions

    We design integrated solar + EV charging systems:

  • Right-sized solar for home + vehicle
  • Professional EVSE installation
  • Smart charging integration
  • Battery storage options
  • Contact us to power your drive with sunshine.

    Ready to Go Solar?

    Get a free consultation and personalized quote for your home or business.

    Get Your Free Quote