Best Solar Installers in Lagos: What to Check Before You Pay Anyone
Solar installers in Lagos are easy to find and hard to tell apart. Solar and inverter systems are a serious investment, and Lagos has no shortage of installers competing for your money. Some are excellent. Some will sell you whatever is sitting in their store, regardless of whether it fits your home. Here's how to tell the difference before you pay a deposit.
1. Do they calculate your load, or just ask "how many rooms"?
A proper installer asks about your actual appliances: how many air conditioners, whether you run a freezer, how many hours of backup you want, whether you work from home. If an installer quotes you a system based only on the number of bedrooms in your house, that's a warning sign. Room count tells you almost nothing about power consumption.
2. Do they give you a written quote?
A verbal number is not a quote. A proper quote is written down and includes panel wattage and count, inverter brand and kVA rating, battery chemistry and capacity, labour cost, and timeline. If an installer is reluctant to put things in writing, ask yourself why.
3. Do they explain the trade-offs?
Every solar decision involves a trade-off: lithium costs more but lasts longer than tubular, more panels cost more but reduce grid dependence faster, a bigger battery bank costs more but gets you through longer outages. A trustworthy installer walks you through these trade-offs instead of just pushing the most expensive option, or the cheapest one.
4. What warranty do they actually offer?
Ask specifically: what's covered, for how long, and what voids it? A vague "we give warranty" answer isn't good enough. You want a written workmanship warranty separate from the manufacturer's warranty on the panels, inverter, and batteries. Read more in our guide on what warranty to expect from a Lagos solar installer.
5. Can they show you how they'll wire the system?
Poor wiring is one of the most common causes of solar system failures and, in worse cases, fire risk. Ask how they plan to handle the changeover between grid and inverter power, how they'll earth the system, and whether they isolate circuits properly. An installer who can't answer clearly hasn't done this enough times.
6. Do they offer maintenance, or disappear after installation?
Solar and inverter systems need occasional maintenance: panel cleaning, connection checks, battery health tests. Ask whether the installer offers a maintenance plan or only shows up again if something breaks. See our maintenance and repair service for what a proper maintenance visit should include.
7. Are they actually based in Lagos?
Response time matters. If your inverter starts beeping at 11pm or a battery connection comes loose, you want an installer who can reach you quickly, not one juggling jobs across multiple states. Ask where their team is actually based and how they handle emergency callouts.
8. Do they size for your area's specific conditions?
Lagos has its own quirks: harmattan dust that builds up on panels, heavy rainy-season downpours that test roof mounting and waterproofing, and estate-specific wiring rules in places like VGC or Lekki Phase 1. An installer who has actually worked in Lagos will factor these in without being asked.
A simple test before you commit
Ask the installer this one question: "If I only wanted to power my fridge, lights, and phone charging for now, and add more later, could you design for that?" A good installer will say yes and explain how, because they understand systems can be designed to expand. An installer who only sells one fixed package, take that as a signal.
Ready to compare?
If you want a written, load-based quote to compare against what you've already received, request a free quote or message us on WhatsApp. We'll walk you through exactly what we're proposing and why, so you can make an informed decision either way.