Begin with the property
Roof layout, orientation, shade, access and suitable equipment locations affect the design. The switchboard and electrical scope often change the job more than people expect from a phone quote.
Then look at energy use
Total consumption matters, but so does timing. Daytime use, evening loads and planned changes such as an EV or battery can influence system size and whether staging makes sense.
- Recent electricity bills
- Daytime and evening usage patterns
- Roof and shading details
- Switchboard and access considerations
- Future battery or EV plans
Compare what is actually included
When comparing quotes, read the system design, equipment scope, electrical work and stated assumptions together. Ask what changed the recommendation for this particular site—not just which quote is lower on the last page.
A property and bill discussion can give the quote more useful context.