What should be included in my battery backup proposal?

A thorough battery proposal should contain:

  • Full cost of the storage system, installation, and additional equipment
  • Payment milestones
  • Equipment details
    • Battery size (kW and kWh)
    • Battery model and manufacturer
    • Inverter model and manufacturer (if separate from battery)
    • Battery management system (if used)
    • Critical load sub-panel size and cost
  • List of all warranties (battery, inverter, installer workmanship)
  • Details of additional work needed (electrical work, inverter swap, etc.)
  • Pricing guarantee for all equipment
  • Installer information (office location, point of contact, contact information)

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