Path-Q Solar
What financial effect could a major roof repair have on the lifetime return from solar?
Answer
A major roof repair can reduce lifetime solar return by adding costs to remove, store, reinstall, or replace the system and by causing lost production during the work. The impact is largest when the roof repair occurs before the solar investment has recovered its cost.
Key points
- Include system removal, reinstallation, permitting, electrical work, and possible equipment replacement.
- Account for lost savings while the system is offline.
- Compare the repair timing with the roof’s remaining useful life and the solar contract or financing term.
- A roof replacement before installation may cost more initially but can avoid later solar-related work.
What it depends on
- Roof age, condition, and expected repair timing
- System size and mounting method
- Removal and reinstallation pricing
- Financing, PPA, or lease responsibilities
- Expected electricity savings and system life
Risks and trade-offs
- Roof damage can create disputes over whether the installer, roofer, homeowner, or equipment provider pays.
- A roof repair may require changes to the array layout or electrical design.
- Ignoring roof work can make a short payback estimate materially misleading.
Information you may need
- Independent roof inspection and remaining-life estimate
- Written removal and reinstallation assumptions
- Contract provisions for roof repairs
- Expected downtime and lost production
- Lifecycle financial model including the repair scenario
Your next step
What to do next
Obtain a roof assessment and compare the project return with installation now versus completing the likely roof work before solar installation.
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