Review and approve your scope document.

This is the engineer-signed plan for your install. Take your time. Once approved, ₦1,680,000 will be released from escrow to procurement so equipment ordering can begin. M2 starts within 24 hours.

M1 Survey Complete Your approval here releases procurement. M2 Procurement

SIGNED OFF BY

Tunde Okafor

Lead System Designer · SabiHand Engineering · COREN Reg. EE/2018/3091

Signed 19 Apr 2026

System specification

3kVA Hybrid solar and inverter system, sized for your priority loads.

Inverter

3kVA / 24V Hybrid Inverter Pure sine wave. Grid-tie capable. Auto-switching with 10ms transfer time. 2-year manufacturer warranty.

Solar array

4 × 545W mono PERC panels (2,180W total) Tier-1 manufacturer. 25-year linear performance warranty. Roof-mounted on aluminium rails, south-east orientation, 12° tilt optimized for Lekki latitude.

Battery

24V 200Ah Lithium (LiFePO4) 4.8 kWh usable capacity. 6,000-cycle rated lifespan (≈10 years at one cycle/day). 5-year warranty.

Charge controller

60A MPPT, integrated Maximum power point tracking. Battery-aware charging profile. Built into inverter.

Balance of system

AC + DC isolators · surge protection · breakers · cabling · mounting All cabling MV4 solar-rated. AC and DC isolators, RCBO breakers, surge arresters per IEC 61643. Mounting structure rated for Lagos wind loads.

Sized for

Lights and fans · fridge/freezer · 1 AC unit · WFH setup · water pump (intermittent) Daily generation budget: ~9 kWh on average Lagos sun day. Confirmed against your priority load list and PHCN bill range.

What's covered (and what isn't)

Be clear up front. No surprises later.

INCLUDED

All equipment listed above, delivered to site with serial numbers
Roof mounting and panel installation
Inverter and battery installation in your selected location
Wiring, AC/DC isolators, breakers, surge protection
Commissioning, load testing, and 14-day monitoring window
Manufacturer warranty registration on your behalf
Training session for you on system operation

NOT INCLUDED

House rewiring or distribution-board changes (separate scope if needed)
Repair of existing roof damage discovered during install
Adding loads beyond the priority list (talk to us first)
Generator integration (separate quote)
PHCN bill changes or net-metering applications
Anything not listed in 'Included' on the left

Cost breakdown

Locked at quote. Protected against FX moves of less than 3%.

M1 · Site survey Released 19 Apr 2026 on your approval of the survey

₦280,000

M2 · Equipment procurement Tier-1 panels, inverter, lithium battery, balance-of-system. Releases on this approval.

₦1,680,000

M3 · Installation labour Mounting, wiring, commissioning, load testing

₦700,000

M4 · Testing and handover 14-day monitoring, training, warranty registration

₦140,000

Total project

₦2,800,000

Quote locked at M1 sign-off. Held in escrow with a regulated partner. Released milestone-by-milestone, only when you approve. If USD-NGN moves more than 3% between now and procurement, we'll send a small adjustment for your approval before equipment ships.

WHAT APPROVING DOES

Approving releases procurement.

₦1,680,000

moves from escrow to SabiHand procurement on your approval

Equipment ordering begins within 24 hours
You receive serial numbers and supplier receipts in your M2 proof pack
Equipment delivered to site under SabiHand supervision (with delivery video)
Your installer Fatima Adebayo schedules install with you
Remaining ₦840,000 (M3 + M4) stays in escrow until you approve installation and handover