The short version
A good quote names the exact equipment, shows expected production month by month, says who does the paperwork, lists the warranties and spells out what is not included. If any of those is missing, ask.
1. The equipment, by name
Panel make, model and wattage; number of panels; inverter or microinverter model; battery model and usable capacity if included; mounting system. "Tier 1 panels" is not a specification.
2. The design
Which roof planes are used, the orientation and tilt, any shade allowance, the inverter position and the cable route. We include a layout drawing.
3. Expected production
Annual and monthly production in kWh, the assumptions behind it, and an estimate of how much you will use directly versus export. Savings that assume you use every kWh you produce are not realistic for an ordinary home.
4. Paperwork
Who issues the electrical certificate, who registers the installation in Andalucía, who sets up surplus compensation with your electricity company, and whether municipal permits are included. Ours include all of these for standard home systems.
5. Warranties
Panel product and performance warranties, inverter and battery warranties, and the installer's workmanship warranty. We register manufacturer warranties in your name.
6. What is not included
Scaffolding, roof repairs, consumer unit upgrades, backup switching, trenching. A low headline price with broad exclusions often ends up costing more.
7. Payment terms and timescale
Deposit, stage payments and when the balance is due, and a realistic installation date.
Questions we are often asked
Should I avoid the cheapest quote?
Not automatically. Check the equipment, scope, paperwork and exclusions before comparing totals.
Do you include the registration?
Yes, for standard home systems.