Path-Q Solar

How should maintenance and insurance costs be included when calculating solar ROI?

Answer

Include expected maintenance, monitoring, cleaning where applicable, repairs, equipment replacement, and any incremental insurance cost as dated cash outflows. Separate costs that would exist without solar from costs caused by the system, and use scenarios when the amounts or timing are uncertain.

Key points

  • Routine maintenance may be modest, but inverter, battery, roof, communications, and storm-related costs can be more significant.
  • Check whether homeowner or commercial insurance changes, requires endorsements, or excludes specific risks.
  • Include deductibles, downtime, and replacement labor when they could affect cash flow.
  • Avoid assuming that warranties cover every service, labor, weather event, or consequential cost.

What it depends on

  • System type, equipment, and site conditions
  • Warranty and service coverage
  • Insurance policy treatment and premiums
  • Maintenance schedule and analysis period

Risks and trade-offs

  • Underestimating recurring or replacement costs overstates ROI.
  • Overestimating uncertain expenses can obscure a reasonable range of outcomes.
  • Insurance, warranty, and maintenance responsibilities may differ among providers and policies.

Information you may need

  • Equipment warranties and service terms
  • Maintenance plan and estimated costs
  • Current and proposed insurance documentation
  • Replacement and outage assumptions

Your next step

What to do next

Ask the insurer and installer for written coverage and maintenance assumptions, then add them as separate annual or dated cash flows.

Path-Q

Find the right next step

Answer a few questions and we’ll narrow your options.

Loading…

SQ01191