The PowerNexa blog

Everything we've learned installing solar in Lagos

Practical guidance on solar, inverters, and batteries from the team that installs them.

How to calculate inverter battery backup time: a calculator, notebook and pencil on a desk

1 November 2026

How to Calculate Inverter Battery Backup Time for Homes in Ikeja, Ikoyi and Across Lagos

Want to know if your batteries will carry you till morning? Here's a simple way to work out inverter battery backup time with four numbers and a phone calculator, with worked examples for common Lagos battery banks.

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Solar panel not charging battery: rows of solar panels on a flat roof under a grey sky

Guides10 min read

26 October 2026

Solar Panel Not Charging Battery? Causes and What to Check in Ikorodu, Lekki and Across Lagos

The sun is out but your battery isn't filling up. Here's how to tell if your panels are charging at all, the common reasons they stop, what you can check safely, and when to call a technician.

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Inverter keeps tripping: a row of circuit breakers in an open electrical panel

Guides10 min read

17 October 2026

Inverter Keeps Tripping or Switching Off? Why It Happens in Ketu, Sangotedo and Across Lagos

Your inverter keeps tripping the breaker or the earth leakage, or it switches off and on by itself. Here's what usually causes it, how to find the problem safely, and when to call a technician.

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Inverter showing fault: red digital readings on a row of electrical meters

Guides9 min read

14 October 2026

Inverter Showing Fault or Red Light? What It Means in Ogba, Ajah and Across Lagos

Your inverter has a red light on, or the screen shows a fault code like 04, 07 or 09. Here's what the common codes mean, how to reset a fault safely, and when to stop and call a technician.

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Inverter battery not giving backup: a row of battery terminals with red and blue caps

Guides8 min read

9 October 2026

Inverter Battery Not Giving Backup? Why It Drains Fast in Surulere, Yaba and Across Lagos

Your inverter battery used to last the night and now it dies in a few hours. Here's why an inverter battery stops giving backup, what you can check, and when it's time to replace it.

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Inverter overload: a power strip with a reset switch and a coiled cable

Guides7 min read

3 October 2026

Inverter Overload? What It Means in Gbagada, Festac and Across Lagos

Your inverter is showing overload and switching off. Here's what overload means, why it can happen even with little switched on, how to reset it safely, and when to call a technician.

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Inverter beeping: a wall-mounted inverter and battery system with its display and breakers

Guides8 min read

28 September 2026

Inverter Beeping? What the Beeps Mean in Lekki, Ikeja and Across Lagos

Your inverter keeps beeping and you're not sure if it's normal or a warning. Here's what each kind of beep usually means, what you can check safely, and when to call a technician.

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Inverter not charging: checking the inverter display and battery cables in a Lagos home

Guides7 min read

26 September 2026

Inverter Not Charging? What to Check Before You Call a Technician in Lagos

NEPA is on but your battery isn't filling up. Here are the checks you can do safely yourself, what each one tells you, and when to stop and call a technician.

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What size inverter do I need: working out the load for an inverter in a Lagos home

Guides6 min read

23 September 2026

What Size Inverter Do I Need? A Simple Load Calculation for Lagos Homes

Work out the right inverter size in five steps: list your appliances, add up the watts, allow for start-up surge, add headroom, then size the battery for your night.

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Solar energy for home: solar panels, inverter and batteries installed in a Lagos house

Guides6 min read

23 September 2026

Solar Energy for Home in Lagos: What Size You Need and What It Can Run

What a home solar system includes, which size fits a self-contain, flat or duplex in Lagos, what it can and can't run, and how it compares with plug-in solar kits.

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What can a 5kVA inverter carry: an inverter and lithium battery setup in a Lagos home

Guides7 min read

23 September 2026

What Can a 5kVA Inverter Carry? AC, Pumping Machine and More

Which ACs, pumping machines and home appliances a 5kVA inverter can run in Lagos, how long different battery banks last, and how many solar panels it needs.

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What can a 3.5kVA inverter carry: an inverter and battery bank in a Lagos home

Guides7 min read

23 September 2026

What Can a 3.5kVA Inverter Carry? AC, Freezer and Pumping Machine

Which ACs, freezers, pumping machines and irons a 3.5kVA inverter can run in a Lagos home, how long the batteries last, and how many solar panels it needs.

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Timeline showing how long solar panel installation takes in Lagos

Guides3 min read

16 August 2026

How Long Does Solar Panel Installation Take in Lagos?

A realistic timeline for solar and inverter installation in Lagos, from first site visit to a fully commissioned system.

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Lithium vs tubular battery comparison for Lagos solar systems

Guides3 min read

11 August 2026

Lithium vs Tubular Battery in Lagos: Which Should You Choose?

Lithium or tubular battery for your solar or inverter system? Here's a straightforward comparison for Lagos conditions.

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Comparing inverter systems and generators for Lagos homes

Comparisons3 min read

6 August 2026

Inverter vs Generator in Lagos: Which Saves You More Money?

A honest comparison of inverter and battery systems against petrol and diesel generators for Lagos homes and businesses.

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Homeowner's guide to solar and inverter installation in Lagos

Guides4 min read

1 August 2026

Solar and Inverter Installation in Lagos: The Complete Homeowner's Guide

Everything a Lagos homeowner needs to know before installing solar panels, an inverter, and battery backup, in one guide.

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Checklist for choosing among solar installers in Lagos

Guides3 min read

27 July 2026

Best Solar Installers in Lagos: What to Check Before You Pay Anyone

Solar is an expensive, long-term investment. Here's exactly what to check before you hand your money to any installer in Lagos.

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Solar panel installation cost factors in Lagos, Nigeria

Pricing4 min read

22 July 2026

How Much Does Solar Panel Installation Cost in Lagos? (Price Guide)

A clear look at what actually drives solar and inverter installation cost in Lagos, so you can budget before you call anyone.

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