Path-Q Solar
How does inverter downtime affect annual solar savings?
Answer
Inverter downtime reduces savings by preventing some or all available solar energy from being converted and used or exported. The impact depends mainly on when the outage occurs, how long it lasts, whether the whole array is affected, and the value of the energy that would otherwise have been used or exported.
Key points
- A short outage during low-production periods may have little annual impact.
- A prolonged outage during high-production months can materially reduce annual energy and savings.
- Microinverter and multiple-inverter systems may limit the affected portion of the array.
What it depends on
- Outage duration and frequency
- Array production during the outage
- System architecture and affected capacity
- On-site consumption, export treatment, and electricity rates
Risks and trade-offs
- Monitoring gaps can make downtime appear shorter or longer than it was.
- Repeated trips may indicate wiring, grid, temperature, or equipment problems rather than a single failed inverter.
- Warranty replacement may not compensate for all lost production.
Information you may need
- Inverter alarm and monitoring history
- Dates and duration of outages
- Expected production for those periods
- System size, architecture, and relevant bill data
Your next step
What to do next
Export the monitoring outage log and compare it with expected production and bills, then request a diagnosis if the lost energy is material or outages recur.
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