Solar load assessment
We go through your appliances, your meter history and your generator hours to get a real daily kWh figure. No guessing from the size of the house.
Independent solar engineering, Nigeria
We size your system. You decide who builds it — including us.
McMyra does the engineering: we measure your load, design the system and write the spec. Implementation is yours to award — to us or to anyone else.
Residential homes
Houses and flats, from a single inverter and battery to a full rooftop array.
Small businesses
Shops, offices and light industrial units where an outage costs you money.
C&I energy systems
Commercial and industrial sites, such as factories, hotels and office buildings, with loads running into hundreds of kilowatts.
Solar installers
Firms who fit systems and want the sizing and drawings done independently.
Equipment agnostic
Compatible across brands and manufacturers, with no proprietary lock-in.
The problem
Most solar quotes in Nigeria are equipment lists, not designs.
A vendor sizes your system around whatever is in the warehouse this month. You get a 5kVA inverter because that is what arrived. Eight weeks later the batteries are flat by 9pm and nobody can say why.
We start from the other end. What do you actually run, for how many hours, and what does it cost to carry that load through a bad grid week. Then we specify the equipment that meets it.
What changes when an engineer sizes it
Services
Six things we do, start to finish
Solar system design
Array size, inverter rating, battery capacity, string layout, cable sizing and protection. Written up so any competent installer can build from it.
Equipment selection
We name specific models and say why. If you already hold quotes for Deye, Aurora or Galaxy, we tell you which one fits the design and which does not.
Solar quotation
A priced bill of materials at current market rates, so you can see straight away when a vendor has padded the number.
Remote installation support
We stay on the job by phone and photo while your installer builds. Checks at DC wiring, at commissioning and at handover.
Troubleshooting
System already installed and underperforming? We work out whether it is the design, the equipment or the inverter settings, and put it in writing.
Quick sizing
Rough out your system in about a minute
Tick off what you run. This gives you a ballpark so you can tell whether a quote is in the right region. A real assessment measures your load instead of assuming it.
Fridges
Fridge or fridge-freezer
1
Freezers
Chest or upright, runs colder
1
Air conditioners
How many, about 8 hours a day
1
Air conditioner rating
Size of each unit
Fans
Ceiling or standing
2
Washing machines
Cold fill, about one load a day
1
TVs and workstations
Screens, decoders, laptops
2
Lights and sockets
Size of the building
Borehole pump
Motor rating, if it runs on the system
Backup you want
How long with no sun and no grid
Ballpark system
Daily energy
16
kWh
Panel array
4.9
kWp
Usable battery
8.8
kWh
Inverter
5.0
kVA
Estimate only, based on 4.2 peak sun hours and 80 percent usable battery depth. Your roof, your shading and your load profile will move these numbers.
Get the real numbersHow it works
Four steps, no site visit needed
You send your load list
Photos of your distribution board, a list of appliances, and your last few bills or generator receipts.
We talk for 45 minutes
A call to fill the gaps. Which loads must stay on, which can drop, what your budget really is.
Design pack in three days
Sizing calculations, single line diagram, equipment schedule and a priced bill of materials.
Take it to any installer
Send it out for quotes. We can review what comes back and watch the build if you want us to.
Recent work
Systems our engineers have specified and checked
Carport array over staff parking
The same class of canopy running lights at night
Flat roof array under construction
Send us your appliance list. We will tell you what you actually need.
First reply within one working day. If solar is the wrong answer for your building, we will say so.