Path-Q Solar
Should I get separate quotes for rooftop and ground-mounted solar before choosing between them?
Answer
Yes, if both locations are genuinely feasible, separate comparable quotes are useful because the options differ in production, cost, access, maintenance, permitting, land use, and expansion potential. Require each quote to state the same energy target and assumptions.
Key points
- Compare annual and seasonal production, shading, orientation, equipment, capacity, and expected losses.
- Include site preparation, trenching, foundations, fencing, vegetation control, access, and security in the ground-mount quote.
- Check roof replacement, structural work, roof access, and future roof maintenance in the rooftop quote.
- Ask about future expansion, maintenance access, storm or snow exposure, and ownership of the land or structure.
What it depends on
- Available roof and ground area
- Site conditions, shading, soil, drainage, and access
- Permitting, interconnection, land-use, and structural requirements
- Comparability of designs and complete project costs
Risks and trade-offs
- Ground mounting may improve orientation or access but can require more civil work, land, and maintenance.
- Rooftop mounting may use existing space but can complicate roof work and have less flexibility.
- A cheaper quote may omit site-specific work or use different production assumptions.
Information you may need
- Site survey for both locations
- Comparable system size or energy target
- Complete installed costs and exclusions
- Maintenance, access, expansion, and permitting assumptions
Your next step
What to do next
Obtain separate itemized quotes and ask both installers to complete the same comparison table for production, scope, exclusions, and future maintenance.
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