Solar Power » Economics

Causes for Yield Shortall

Causes for Yield ShortfallIf the power or energy output of the system is not as expected, this yield shortfall could have a number of causes


Errors in forecasting, planning, design and quality assurance of modules occur frequently. In most instances, they cannot be fixed afterwards. High quality design and engineering is required.

Operational - internal

Component errors include inverter defects, loose cable connections, defective fuses, mechanical defects in trackers, module defects (mechanical or pv material) and insulation faults (e.g. from animal bites). Real-time monitoring help with detection and to keep maintenance costs low.

Operational - external

External events beyond the control of the operator include natural disasters, theft, vandalism expropriation. Stakeholders may require insurance against those risks.
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