Residential
Whole-home solar, storage and changeover, designed from your measured load — never from a template. Every house drinks differently.
Size your home →/// ABUJA HQ — INSTALLS NATIONWIDE — OPEN 24 HOURS
No NEPA.No Diesel. No Noise.
Okeh Tech does not merely sell solar hardware. It helps you understand, size and transition to dependable power — then installs it, monitors it and stands behind it nationwide.
ResidentialCommercialIndustrialWater pumpsStorageMaintenance
/// 01 — THE METER
What is unreliable power costing you?
One locked reference example, and one scenario you control. Both are modelled — neither is a quote. The survey makes it real.
Reference scenario — locked
Monthly electricity bill₦80,000
Solar fuel spend₦0
Evaluation horizon10 years
Est. monthly saving₦68,000
Est. ten-year saving₦8.2M
Est. payback≈2.9 yrs
Yr 0Cumulative est. saving vs assumed system costYr 10
Locked reference scenario — inputs and outputs are fixed. Savings and payback are estimates, not guaranteed returns. ₦0 solar fuel spend does not eliminate residual grid charges, servicing, replacement or ownership costs.
Personalised scenario — your inputs
Est. monthly saving₦68,000
Est. 10-year saving₦8.2M
Est. payback≈2.9 yrs
Yr 0Modelled from your inputs — not a quoteYr 10
Fuel spend and the grid bill are tracked separately so nothing is double-counted. Change any input — the locked reference plate stays untouched.
/// TYPICAL PAYBACK: 3–5 YEARS — then 20+ years of essentially fuel-free power.
The company's published figures. The published range above is the company's general experience. The 2.9-year figure beside it is this page's locked illustrative reference scenario — a different assumption set, kept visibly separate.
/// 02 — INSTRUMENT: THE LOAD LIST
What does your house drink?
Build your daily electricity demand from the appliances you actually use.
The demo preset is a transparent three-bedroom, two-AC schedule built to land near the referenced configuration: 10 × 650W panels + approximately 15kWh storage + 10–12kW inverter class. Its arithmetic is shown openly below — including any discrepancy.
Fridges and freezers cycle — the compressor is not drawing full power 24 hours a day. The duty % control sets the effective runtime assumption (35% of 24h = 8.4h for the fridge above).
23.1daily demand — kWh
4,665peak simultaneous — W
10 × 650W · 6.50 kWparray matched to demand
/// 03 — INSTRUMENT: THE SUN COUNTER
The sun does its shift.
Abuja's daylight, read as an energy budget — not a weather report.
4.2Worst · Aug
5.5Peak sun hours a day
6.5Best · Feb–Mar
Even the worst month outshines half the world.
Peak sun hours are not daylight hours. A peak sun hour compresses a whole day of variable sunlight into the equivalent number of hours at full 1,000W/m² intensity. Abuja sees roughly 11–12 hours of visible daylight, but morning haze, cloud and low sun angles deliver less than full power for much of it. 5.5 is the energy-budget number that sizes an array. These are supplied editorial reference figures — not freshly measured or live meteorological readings.
/// 04 — INSTRUMENT: THE NOISE BAR
The quiet.
The 2am chorus, retired.
2.5kVA petrol generator — approx. 70 dB(A) at 7m70
Diesel genset, open frame — approx. 85 dB(A)85
An Okeh Tech rooftop — no generator engine noise· · ·
020406080100 dB(A)
Generator readings are illustrative references and vary with equipment, load, enclosure and measurement conditions; no universal measurement standard is being claimed here. Decibels are logarithmic — a bar twice as long is not twice as loud. The rooftop row is deliberately empty: it is the absence of an engine, not a verified 0 dB(A) acoustic measurement of the whole house.
/// 05 — THE SERVICE INDEX
What Okeh Tech actually does.
Six doors in. One standard of work behind all of them.
Commercial
Shops, offices, clinics and cold rooms kept trading through outages — three-phase systems sized against real business load, not optimism.
Request survey →Industrial
Higher-demand facilities where downtime carries a price: hybrid plants, substantial storage and properly engineered protection gear.
Request survey →Solar water pumps
Off-grid pumping for farms and ranches. Sun in, water out — no diesel pump, no fuel runs, no waiting on the tanker.
Request survey →Battery storage
Lithium banks retrofitted to existing inverter setups or built into new rigs — for nights, bad-grid seasons and everything the grid plans to do next.
See the stack →Maintenance
Annual servicing, remote monitoring and rapid on-site response. A solar system is a machine; this is the team that keeps it running.
Book servicing →
/// 06 — HARDWARE
Hardware with a job to do.
The reference rig, component by component — each with a role, a number and a warranty.
11kW
Inverter
The brain. Converts the array's DC into clean household AC and manages grid, generator and battery sources without asking you to think about it.
15kWh
Storage
The reserve. A lithium bank that carries the house through the night and the worst grid hours without a generator touching it.
10 × 650W
Array
The harvest. 6.50kWp of Tier-1 monocrystalline collection area on your roof, doing the sun's shift every day.
/// The warranty stack — component labels as published
25 yrsPanels
10 yrsInverter
10 yrsBattery
2 yrsWorkmanship
24/7 monitoring — remote diagnostics, mobile app and alerts.
Review ledger
4.9 / 5 1 review
Company-published rating, carried over from earlier builds. This preview does not independently verify it, and no individual review quotes are reproduced here.
/// 07 — THE FIELD LOG
Men at work.
Real installation documentation, not abstract promises.
FL-01Type plate — project photo pending
FL-02Type plate — project photo pending
FL-03Type plate — project photo pending
FL-04Type plate — project photo pending
FL-05Type plate — project photo pending
FL-06Type plate — project photo pending
No stock photograph will ever be passed off as a specific Okeh Tech installation. Each entry above keeps its exact documentation caption; where the genuine project image is not yet available, a typographic field plate stands in — honestly labelled.
/// 08 — THE INSTRUMENT BAY
Every reading, one passport.
The instruments below all read from the same Home Energy Passport you built in the Load List. Nothing is entered twice; change one input and the dependent dials move.
INSTRUMENT 05
The Backup Window
How long must your home stay alive after sunset? The essential group is deliberately smaller than the whole house — not every appliance has to stay on during an outage. ACs are excluded by default for a reason.
Essential loads — what survives an outage
1,265 Wessential backup load
12.7 kWhovernight energy requirement
20.7 kWhpreliminary capacity required
Above the standard catalogue — the 15.36kWh bank falls short at this window and reserve.
≈7.4 hours15.36kWh bank at this load
Trim the essential group (drop the freezer, halve the fans), shorten the window, lower the reserve — or specify a custom bank. All legitimate survey outcomes.
INSTRUMENT 06
The Simultaneous Load Test
What happens when everything switches on? Peak group — from your Load List "Peak" ticks.
Motor / compressor surge — unverified. Small fridge, chest freezer, split AC and water pump motors can draw several times running watts for a few seconds. Exact surges need equipment data; the surveyor verifies against the inverter's surge rating. No precise startup figure is calculated here.
4,665 Wcombined running load
12kW classinverter class · 2.5× running-peak headroom rule
/// WHY kW AND kWh ARE DIFFERENT ANIMALS
kW is the rate — how hard power is flowing right now (the inverter's problem). kWh is the volume — how much flowed over time (the battery's problem). A 1,100W AC running 5 hours drinks 5.5kWh. Sizing the inverter on daily kWh, or the battery on peak kW, is how undersized systems get sold.
INSTRUMENT 07
The Roof Fit Check
Can the proposed array physically fit?
36.5 m²preliminary area required
60.0 m²usable area offered
Appears sufficient — about 23.5m² of margin for layout, setbacks and future modules.
Footprint defaults to a 650W module (~2.38 × 1.13m ≈ 2.7m²); the ×1.35 allowance covers walkways, setbacks and fixing clearance. Both are editable. A homeowner's typed dimensions can never prove structural capacity — that is a surveyor's inspection. Structure, fixing method and final layout are confirmed at survey.
INSTRUMENT 08
The Seasonal Resilience Test
Will the system still make sense in August?
28.6 kWh/dayannual reference — 5.5 PSH
23.4 kWh/dayconservative design — 4.5
21.8 kWh/dayweak month (Aug) — 4.2
Convention — modelled delivered energy = array kWp × peak sun hours × performance ratio 0.80. Panel nameplate (6.50kWp) is collection capacity; these figures are modelled delivered energy — a different quantity. The 4.5 sizing factor used by the Load List is its own deliberately buffered delivered-yield convention: related to, but not interchangeable with, the 5.5 resource reference above.
6.50 kWpyour array
23.1 kWhyour daily demand
Coverage — annual124%
Coverage — conservative101%
Coverage — August94%
In the weak-month scenario the array produces 21.8kWh — 94% of this schedule's demand. That is what "conservative" buys: August becomes a rounding error, not a blackout. Battery and occasional grid imports cover the gap.
INSTRUMENT 09
The Generator Exit Ledger
What is generator dependence costing you?
Cost composition — now
₦133,000current monthly spend · grid + fuel + servicing
₦14,500modelled post-solar spend · residual grid + maintenance
₦118,500modelled monthly saving
₦14.2Mmodelled 10-year saving
Generator hours are context only — fuel and servicing already carry the cost. The grid bill and generator spend are kept as separate lines so nothing is double-counted, and solar does not assume your grid bill falls to zero: the residual stays on the books. At 85% solar contribution the generator moves from daily driver to rare reserve — fuel spend collapses, servicing nearly disappears, and the grid bill shrinks to its residual.
INSTRUMENT 10
The Payment & Payback Studio
What changes if I pay upfront versus over time? Monthly saving is read from your personalised meter above. The staged arrangement is an illustration — 50% deposit, balance over six months, premium editable. This page never invents a bank's interest rate: financing costs and approval belong to the lender.
The locked ₦80,000 reference meter stays untouched above; this studio only rearranges how the same system gets paid for.
| Scenario | Total modelled cost | Financing charges | Payback |
|---|---|---|---|
| Cash purchase | ₦2.4M | — | ≈2.9 yrs |
| Staged (illustrative) | ₦2.6M | +₦192,000 | ≈3.2 yrs |
| Bank financing — 6–36 months via partner banks | Rates, fees and approval are not published here and are never modelled without supplied terms. Request them with your survey. | ||
INSTRUMENT 11
The System Comparison Bench
What changes between a smaller and larger rig?
| Measure | Config A — lean (proposed − 2 panels) | Config B — proposed (from your passport) |
|---|
Neither configuration is declared "best" here — that would be marketing, not arithmetic. A frees capital and stays inside the catalogue; B buys August headroom and roughly 1.2 extra hours of outage coverage. The survey prices both against your roof.
INSTRUMENT 12
The Installation Readiness Check
What should be ready before the surveyor arrives?
0 / 9
Nothing ticked yet — work down the list. Every tick shortens the survey visit. This is a planning aid, not a substitute for electrical inspection. Missing items do not block a survey — they just get added to the surveyor's list. No account, no contact details: the checklist lives in your browser only.
/// 09 — THE GUIDED ROUTE
Build your way out of generator dependence.
Optional, unhurried and never gated — every instrument above also works alone. Enter or leave the sequence at any step; nothing you have entered is ever erased by moving on.
/// 10 — INSTRUMENT 13: THE ENERGY PASSPORT EXPORT
Your Home Energy Passport.
One page that carries everything you modelled — appliances, demand, proposed rig, backup window, money context and the questions the survey must still answer.
OKEH TECH — HOME ENERGY PASSPORT (PRELIMINARY)
Session plan · illustrative modelling · not a final design
APPLIANCE SCHEDULE
SIZING SUMMARY
- Daily demand23.1 kWh
- Peak simultaneous4,665 W
- Proposed array10 × 650W — 6.50 kWp
- Storage15.36kWh catalogue / custom target
- Inverter class12kW class
- Backup window1,265 W essentials · 10h · 20.7 kWh required
- August scenario (4.2 PSH)21.8 kWh/day — 94% of demand
MONEY CONTEXT
- Reference (locked)₦80,000 bill · ₦68,000/mo est. saving · ≈2.9 yr payback
- Personalised₦68,000/mo est. saving · ≈2.9 yrs payback
- Generator ledger₦133,000 now → ₦14,500 modelled
UNRESOLVED — SURVEY MUST CONFIRM
Motor startup surgesRoof structure & fixingShade auditDistribution board & earthingCustom battery bank specModule orientation & strings
SURVEY READINESS
0 / 9 prepared — see the readiness check
Concept preview — this passport is a preliminary planning summary built from modelling defaults and your selections. It is not an engineering design, a quote or a performance guarantee. Sizing, pricing and suitability are confirmed only by the on-site survey. It is generated on this device; no household information is transmitted anywhere.
Print produces a clean one-page summary using the browser's own PDF writer — an honest document, not a renamed web page. Copy builds a short text brief you can paste into any message channel. Your plan is saved in this browser only (localStorage) so the instruments remember you between visits on this device. Nothing is sent to any server.
/// 11 — STRAIGHT ANSWERS
Asked often, answered plainly.
How long does installation take?
Residential: 1–2 days. Commercial: 1–3 weeks.
What warranties are offered?
25/10/10-year component warranty stack — panels 25 years, inverter 10 years, battery 10 years — plus 2 years workmanship.
Is financing available?
6–36 months through partner banks.
Can a system operate fully off-grid?
Yes, subject to correct system design and sizing.
Do you install outside Abuja?
Yes, nationwide.
Company-published answers, reproduced without added terms, approval guarantees, eligibility conditions or financing rates.
/// 12 — THE NEXT STEP
Request a free site survey with this plan.
Bring the passport. The surveyor verifies the roof, the surges, the board and the shade — and replaces every "modelled" on this page with a number that is yours.
Open 24 hours
Free site survey & savings estimate
Installs nationwide
okehtechsolarenterprises.com
