How to Power Your Starlink Router with Solar in Nigeria

Solar can keep Starlink up through a NEPA cut only when the panels recharge the battery faster than the outage drains it. A cloudy week in the south is the test, not a bright December afternoon. The watt figures on this page are planning bands already used here. They were not re-read from a Starlink datasheet on 9 October 2026. Measure your own kit. The national note, which does not copy Mini or boat watts onto a Standard home, is power backup.

On this page the planning band for a dish and Gen 3 router together is about 40–75 W once booted, with a higher peak when the dish searches after a reboot. Mini is lower, and that lower band stays on this solar page because the bank size changes. Do not treat either band as a guarantee.

This guide covers real component specs: panel wattage, battery amp-hours, MPPT controller selection, cable gauges, and fuse placement. We're installers who've seen ₦800,000 solar kits that couldn't keep a router alive through a Tuesday afternoon because nobody counted inverter overhead and networking inrush together.

Know your Starlink power draw before you buy panels

Standard Gen 3 residential kits: dish plus router commonly land 40–60 W average at the wall, spiking toward 100 W briefly on cold start and satellite search. Starlink Mini draws less — often 25–40 W — which changes bank sizing if you're on a portable setup. Measure with a plug-in meter on your actual kit; estate voltage sag makes cheap meters lie less than guessing from a forum post.

Decide what must stay online: router only, or router plus dish on the same circuit. Many Nigerian compounds put the dish on a roof UPS segment and the router indoors on a separate plug — solar design must follow where you actually terminate power, not where the app icon lives on your phone.

Daily watt-hour budget

Multiply steady watts by hours you need autonomy. Example: 55 W × 8 hours = 440 Wh minimum usable energy before recharge. Add 20–30% for MPPT losses, battery depth-of-discharge limits, and cloudy-day margin. Eight hours of router+dish uptime in Lagos rainy season is not the same math as eight hours in December harmattan sun.

Solar panel sizing for Nigerian sun hours

Usable sun hours in southern Nigeria often run 4–5 peak hours/day annual average, lower in July–September. To replace 500 Wh daily with 85% system efficiency, you need roughly 500 ÷ (4.5 × 0.85) ≈ 130 W of panel — minimum. Competitive installs for 12–16 hour autonomy target 300–450 W on the roof because panels don't deliver nameplate when haze, dust, or estate water tanks shade one string.

Use 24 V or 48 V panels with an MPPT matched to your battery bank voltage. Two 200 W monocrystalline panels in series (24 V nominal) is a common residential starting point for Starlink-plus-light-load sites. Corrugated roofs need proper standoffs; concrete slabs may prefer ballasted frames where drilling is restricted — same estate rules we handle on Lagos installs.

Battery bank sizing: lead-acid vs LiFePO4

Lead-acid (wet or AGM): cheaper upfront, heavier, tolerate abuse poorly below 50% state of charge. For 500 Wh usable at 50% DoD you need 1,000 Wh nameplate — roughly 100 Ah at 12 V or 50 Ah at 24 V. Nigerian heat accelerates sulfation if your battery box sits on a tin roof without ventilation.

LiFePO4: higher round-trip efficiency, 80–90% usable DoD, better for daily cycling through NEPA. A 24 V 100 Ah LiFePO4 pack (~2.4 kWh) gives comfortable headroom for Starlink, a mesh node, and evening laptop charging if the MPPT is sized correctly. Brands sold in Computer Village and online marketplaces vary — buy BMS-protected packs from suppliers who honour warranty locally.

Runtime example

2.4 kWh usable at 80% DoD ≈ 1.9 kWh. At 55 W load that's ~34 hours theoretical — before inverter overhead. Real-world: 18–24 hours is a honest handover number with a 600 W pure sine inverter and one cloudy day factored.

MPPT controller selection

MPPT (Maximum Power Point Tracking) controllers extract more energy than PWM on 24 V/48 V arrays — worth the naira for Starlink uptime projects. Size controller current: I = P_panel ÷ V_battery × 1.25 safety factor. Two 200 W panels (400 W) on a 24 V bank: 400 ÷ 24 × 1.25 ≈ 21 A — choose a 30 A MPPT (Epever, Victron, Felicity Solar controllers are common in Nigerian integrator channels).

Verify PV input voltage limits before wiring panels in series. A cold harmattan morning pushes open-circuit voltage above some controllers' max — we've seen nuisance shutdowns on cheap clones spec'd for temperate climates.

Inverter choice: pure sine matters

Starlink's power supply expects clean AC. Modified sine inverters cause odd router reboots and dish search loops that look like obstruction faults. Use pure sine, 600–1000 VA class for router+dish, with surge rating above 2× steady load. Online UPS mode hybrids exist but cost more; line-interactive pure sine is the pragmatic Nigerian compound default.

If you already run a whole-home inverter (Luminous, Felicity, Genus), dedicate a pure sine sub-circuit for networking gear rather than sharing with refrigerators that drag voltage on compressor start.

Wiring specs and protection

DC side: 6 AWG (13.3 mm²) or 4 AWG for short battery-to-inverter runs under 1.5 m at 24 V / 100 A peak — verify with a voltage-drop calculator for your layout. Fuse at battery positive: 100 A ANL or MRBF type within 30 cm of terminal. DC breaker between MPPT and battery bank. Label polarity — estates with multiple tenants mean the next 'helper' will wire it wrong.

AC side: 1.5 mm² (16 AWG) minimum to a dedicated 10 A breaker for the Starlink outlet strip. Earth bond inverter chassis to building earth per site rules. Outdoor DC runs in UV-rated conduit; gland where conduit enters battery box — rats and rain follow the same paths as on cable routing jobs.

Earthing and lightning

Solar frames and battery negative should reference a common earth electrode where regulations require it. Lightning season across the south kills underspecified installs. Starlink dish on the same roof needs equipotential bonding — solar and satellite are one system electrically, not two hobbies.

Hybrid with generator and grid

Most Nigerian sites are hybrid: solar extends quiet hours, generator covers extended outages, NEPA trickle-charges when present. Automate changeover so networking gear doesn't see simultaneous feeds. Stagger reboot: dish, router, then mesh — simultaneous inrush trips breakers on small inverters.

Document expected runtime in writing. 'Solar backup' without Wh math is how salesmen sell disappointment.

When solar-only Starlink makes sense

Remote compounds in Delta and Bayelsa without grid for days. Farm offices with clear roof space. Urban estates with strict generator curfew hours where batteries must carry networking silently. It fails when you expect fibre-grade uptime from one 100 W panel and a tired AGM battery.

Professional integration vs DIY

DIY works if you can read MPPT manuals, calculate voltage drop, and test autonomy with grid breaker off for a full rainy weekend. DIY fails when panels shade at 3 p.m., battery sits in a hot box, and Starlink shares a modified sine inverter with a welding socket. DataGram scopes solar-plus-Starlink on enterprise sites with load lists, fuse charts, and handover runtime tests.