Big Dave SolarRun your property on sunlight , not fuel.
Big Dave Solar designs and installs solar panels, hybrid inverters and lithium batteries sized to your real energy use, so you stop paying for generator fuel and stop planning your day around outages.
- Free site survey
- Itemised, honest quotes
- Installation warranty
- After-sales support
What is Big Dave Solar?
Big Dave Solar is a Nigerian solar installation company that designs, supplies and installs solar panel, inverter and lithium battery systems for homes, shops, offices, clinics and small businesses. Every system is sized from your actual appliance load, installed by trained technicians and backed by manufacturer and installation warranties.
What we do
Solar services for every kind of building
From a single-room backup to a full business power system, we handle design, equipment, installation and support.
Home Solar Installation
Solar panels, hybrid inverter and battery systems sized for your home.
Learn more →02Commercial & Business Solar
Cut diesel and petrol costs for shops, offices, clinics and small factories.
Learn more →03Inverter & Battery Upgrades
Swap tired lead-acid batteries for lithium and upgrade to a hybrid inverter.
Learn more →04Solar Maintenance & Repair
Cleaning, health checks and fault repair for new and existing systems.
Learn more →Our work
Real installations by our crew
Short clips from our own installation sites: panels going up, inverters and batteries being fitted and earthing done properly.
- Unpacking on site
- Panel mounting
- Earthing
- Panels for a home
Why switch
Solar vs. generator and unreliable grid power
Generator fuel, servicing, noise and fumes add up month after month. Solar moves most of that cost into a one-time investment.
Generator and grid only
- Ongoing fuel and servicing costs
- Noise, fumes and fuel storage risks
- Power cuts when fuel runs out or the grid drops
- Costs rise whenever fuel prices rise
Solar + battery with Big Dave Solar
- Free daytime energy from the sun
- Silent, clean, automatic switchover
- Battery keeps you on through the night and outages
- Expandable: add panels or batteries later
System sizes
What size solar system do you need?
Indicative ranges only. Your exact system depends on your appliances, hours of use and roof space, which is why we survey first.
| Usage level | What it runs | Inverter | Lithium battery | Panels |
|---|---|---|---|---|
| Essentials | Lights, fans, TV, phone charging, router, small fridge | 1.5–3 kVA | 2.5–5 kWh | 4–8 |
| Family home | Essentials plus freezer, washing machine, water pump, laptops | 3–5 kVA | 5–10 kWh | 8–12 |
| Full comfort | Family home plus one or more air conditioners | 5–10 kVA | 10–20 kWh | 12–24 |
| Business | Shops, offices, clinics, cold rooms, machines | 5 kVA and above | Sized per load | Sized per load |
How it works
From first message to clean power in four steps
- 1
Message Big Dave
Tell us what you want to run, your budget and your hours of use on WhatsApp. No pressure, no jargon.
- 2
Site survey & design
We inspect your roof, wiring and load, then design a system that fits and quote every item clearly.
- 3
Professional installation
Our technicians mount, wire, earth, protect and commission the system safely and neatly.
- 4
Handover & support
We walk you through the system, hand over your warranties and stay available for maintenance.
Solar guides
Learn before you buy
Plain-English guides on sizing, batteries, costs and maintenance.
How to Size a Solar System for Your Home in Nigeria
A step-by-step way to work out the inverter, battery and number of panels your home needs, using your own appliances and hours of use.
2 min readBatteriesLithium vs Lead-Acid Batteries for Solar: Which Should You Buy?
A fair comparison of lithium (LiFePO4) and lead-acid batteries on lifespan, usable capacity, maintenance and real cost over time.
2 min readSizingCan Solar Power Run an Air Conditioner? What You Need to Know
Yes, solar can run an AC, but it changes the size of your whole system. Here is how much extra inverter, battery and panels you need.
2 min readQuestions
Solar in Nigeria: frequently asked questions
How much does a solar system cost in Nigeria?
The cost depends on your daily energy use. A small home system for lights, fans, TV and a fridge costs far less than one that also runs air conditioners and a freezer. Battery capacity and inverter size drive most of the price. Big Dave Solar gives a free, itemised quote after a site survey so you only pay for what you need.
What size solar system do I need for my home?
Add up the watts of the appliances you want to run and the hours you use them each day. A typical 2 to 3 bedroom home with fans, lights, TV and a fridge often needs a 3 to 5 kVA inverter, 5 to 10 kWh of lithium battery and 6 to 12 panels. Homes with air conditioners need more. Use the load calculator on this site for a starting estimate.
Can solar run an air conditioner in Nigeria?
Yes, but air conditioners use a lot of power, so the inverter, batteries and panels must be sized for them. Inverter-type (variable speed) ACs are much easier to run on solar than older fixed-speed units.
How long do solar panels, inverters and batteries last?
Quality solar panels commonly last 25 years or more. Inverters typically last 8 to 15 years. Lithium (LiFePO4) batteries commonly last 3,000 to 6,000 charge cycles, roughly 8 to 15 years of daily use.
Does solar work in the rainy season or harmattan?
Yes. Panels still produce on cloudy days, just less. Systems are sized with seasonal variation in mind, and a battery plus an optional generator or grid input covers the lowest-sun days. Clean panels after harmattan dust.
Do I still need a generator after installing solar?
Often no, or only rarely. A correctly sized system can cover most or all of your needs. Many customers keep a generator or grid connection as a backup, and a hybrid inverter switches between sources automatically.
How do I get a quote from Big Dave Solar?
Message us on WhatsApp or use the contact page. Tell us what you want to power and where you are. We arrange a free site survey and send an itemised quote.
Get your free solar quote
Message Big Dave on WhatsApp with what you want to power and where you are. We will arrange a free site survey.