Thaka.AiReviewed 16 October 2026 · schematic not to scale
Turn a measured load survey into an itemised engineered project, including generation, storage, distribution and maintenance.
- 1Measured sunlight and unshaded panel
- 2Compatible controller / power station
- 3Protected storage and approved wiring
- 4Metered compatible load
Site and operating requirements
- Record shade, usable area, local weather, cable route and access before selecting equipment.
- Match every electrical input/output and connector to the exact manufacturer datasheet; distinguish W, Wp and Wh.
Tools and measuring equipment
- Tape measure, notebook, compatible energy meter, current component manuals and the supplied installation tools. Electrical testing by a competent person.
Output and operating conditions
Example: 20 kW used for 6 h/day = 120 kWh/day. At 5 sun-hours and 75% yield factor: 32 kWp PV. One full backup day at 90% inverter efficiency and 80% battery depth of discharge needs about 166.7 kWh nominal storage.
Illustrative daily-energy balance. It does not model hourly weather, seasonal reliability, recharge after a deficit or multiple motor starts.Parts, quantities and dimensions
| Part | Quantity | Specification / dimensions |
|---|---|---|
| PV modules | example 72 × 450 Wp | 32.4 kWp rounded module count. Panel length, width, mass, racking and string design must come from the selected datasheet. |
| Inverter and battery | engineered set | Example 25 kW running margin; startup rating needs a motor study. About 166.7 kWh nominal at the stated assumptions. |
| Protection and distribution | site designed | DC/AC isolation, overcurrent and surge protection, earthing, transfer equipment, metering and rated cables. |
| Civil works and maintenance plan | site designed | Structural loading, ventilation, battery location, access, spares and local service. No universal house/village layout. |
Preparation and component checks
- Build a dated load schedule including essential services, motor starts, service hours and expected growth. Enter measured kWh/day and demand peaks rather than a household count.
- Require hourly resource/load modelling and an itemised single-line design showing PV strings, inverter, battery, transfer arrangement, earthing, protection and distribution.
Procedure
- 1
Survey each load, critical service, schedule and seasonal demand; measure actual consumption.
- 2
Run an hourly resource/load model and select a reliability and backup strategy.
- 3
Request an itemised compatible-system quote including drawings, structures, protection, installation, approvals and maintenance.
- 4
Have licensed personnel install and test; train local operators and record energy, faults and maintenance.
Safety and inspection
Mains wiring, large battery banks and rooftop structures require local professional design and approval.
Verify the result
Specify critical loads and service hours rather than promising an unrestricted number of households. Demand reduction can reduce system cost.
Measurement log
- Load survey revision, hourly kW, daily kWh, critical-load service target, PV/battery/inverter model, protection tests, energy delivered and outages.
Maintenance and repeat checks
- Assign a trained operator, maintenance budget, spare parts and escalation contacts. Log faults and battery condition; review demand growth before connecting new loads.
Troubleshooting
- No output, abnormal heat, noise, vibration or leaks
- Stop and isolate first. Check the documented input, load compatibility, alignment and connections; keep guards fitted and refer specialist systems to their installer.