Solar basics 2 min read
15 Questions to Ask Before Installing Solar (Checklist)
A practical checklist that protects you from bad decisions: questions for yourself, for the installer, and about warranty and maintenance before signing.
GPS Engineering Team
Installing solar is a 25-year investment, so it deserves an hour of structured thinking. We’ve gathered 15 questions covering every angle, so you go into the project confident about every detail.
Key takeaways
- Understand your consumption and goals before comparing prices.
- Get the numbers in writing: yield, savings, payback and warranties.
- Confirm the maintenance and monitoring plan after handover.
- Choosing the company matters more than choosing the cheapest quote.
Questions for yourself
- What is my average monthly and annual consumption? (review 12 months of bills)
- Is my consumption mostly daytime or night-time?
- What is my goal: savings, backup power, or both? (compare systems)
- How much space is available, and is any of it shaded?
- Will I stay for years, and does the roof need work soon?
Questions for the installer
- What annual yield in kWh do you expect?
- Which panel and inverter brand and model, and why?
- Are you accredited for net metering?
- Which similar projects have you delivered? (GPS projects)
- What is the timeline, and who handles permits?
Questions about warranty and operation
- What are the product, performance, inverter and workmanship warranties? (warranty guide)
- Who honours the warranty locally?
- Is there a monitoring platform, and who watches it?
- What is the maintenance plan and its cost?
- What happens if output falls below expectations?
Next step
Estimate your plant’s size and cost with the calculator, then book a free site visit so our engineers can answer every question with your site’s numbers.
An engineer visits to measure the space, review consumption and give a final quote.
How much would your plant save?
Get system size, cost and expected savings in under a minute.
GPS engineers have designed and built solar plants across Egypt for 15+ years. Here they share what they learn in the field.
Frequently asked questions
How many quotes should I get?
Two or three from experienced companies is usually enough, as long as they are on the same technical basis.
Does a free survey commit me to anything?
No. The survey and offer carry no obligation; the aim is accurate numbers for your site.
Keep reading
Solar basics Solar Energy in Egypt 2026: The Complete Guide from Idea to Switch-On
Everything you need to know before going solar in Egypt: how it works, what it costs, how much it saves, which system…
Solar basics How to Choose a Solar Company in Egypt: 10 Checks Before You Sign
Choosing the installer matters more than choosing the panel. Here are 10 practical checks that separate a professional solar company from the…
Solar basics How Many Solar Panels Do You Need? A Step-by-Step Calculation
Work out the number of panels and system size yourself from your electricity bill, with examples for a home, factory and farm,…
Solar basics How Much Space Does Solar Need on Roofs and Land?
How many square metres per kilowatt? A space guide for concrete roofs, metal roofs and ground mounts, and how shading and walkways…
Solar basics 12 Solar Energy Myths — and the Reality We See on Site
Do panels stop in winter? Do you always need batteries? Do they die after five years? We bust the most common solar…
Solar basics How a Solar Plant Is Installed: From Site Survey to Switch-On
What exactly happens from first call to commissioning? We walk through each project stage, how long it takes and your role in…