Path-Q Solar

How can a landlord decide whether solar installation should wait until a vacant unit is renovated?

Answer

Wait when the renovation may materially change electricity use, roof access, wiring, service capacity, or equipment locations. If the renovation scope is stable and solar work will not interfere, a coordinated design may proceed earlier, but the proposal should explicitly account for the planned changes.

Key points

  • Estimate new loads from heating, cooling, water heating, appliances, and common-area equipment.
  • Identify roof, electrical, attic, and exterior work that could be disturbed by solar installation.
  • Decide which meter or tenant loads the system is intended to serve.
  • Request a design that states whether future loads are included or excluded.

What it depends on

  • Renovation scope and schedule
  • Expected post-renovation load
  • Roof and electrical work
  • Ownership and allocation of solar benefits among units or meters

Risks and trade-offs

  • Installing before renovation can cause rework, access conflicts, or undersizing.
  • Waiting may delay solar, but it can improve sizing and avoid duplicate labor.
  • Sizing for speculative loads may increase cost without guaranteeing those loads occur.

Information you may need

  • Renovation plans and equipment schedules
  • Existing bills and meter configuration
  • Roof and electrical assessment
  • Expected occupancy and post-renovation usage

Your next step

What to do next

Have the renovation contractor and solar designer mark shared work areas and produce a post-renovation load estimate before finalizing the solar design.

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