Fatima Sheikh

5.0 kW Off-Grid system in Karachi, commissioned 12 Apr 2023

System health

Performance ratio against baseline, less open defects

Generated (30 days)

523 kWh

92% of expected

Modelled soiling loss

7.3%

Last cleaned 29 Jun 2026

Performance ratio

74.3%

Baseline 81%, target 82%

Generation, expected against actual

Ninety days. The dashed line is the design expectation; the gap between the lines is money.

Soiling loss

Climbs between washes, drops sharply after rain or a clean. The dashed line is the point where a cleaning visit pays for itself.

Performance ratio trend

Against the fleet target.

System specification

Open findings

Unresolved defects on this site.

Heavy soiling on lower rows
Minor
Dust accumulation reducing output on the two lowest rows more than the rest of the array.
String mismatch on MPPT 2
Major
String currents differ by 18 percent, pointing to partial shading or module degradation.
Bird nesting under array
Minor
Pigeons nesting between modules and roof. Bird mesh recommended for the full perimeter.

Work order history

4 visits

Code	Service	Status	Amount
JOB-2026-0120	Preventive Maintenance	Completed	Rs 8.5K
JOB-2026-0029	Battery Check & Replacement	Completed	Rs 19.0K
JOB-2026-0041	Energy Loss Analysis	Completed	Rs 11.0K
JOB-2026-0055	Panel Angle Optimization	Cancelled	Rs 5.8K

Inspection reports

Generation figures are modelled for the prototype from a fixed seed, so they are identical on every visit.