Peak Sun Hours

Peak sun hours estimate the equivalent number of hours per day when solar irradiance averages 1000 W/m².

Product(s)

TS4-A-O

Increase energy production with shaded & mismatched modules up to 725W

TS4-X-O

Maximize energy production and minimize O&M with optimization, monitoring and rapid shutdown all in one solution

EI Inverter (US)

A battery storage ready hybrid inverter that can be AC or DC coupled for new or retrofit solar installations

EI Inverter (EU)

A battery storage ready hybrid inverter available in single phase and three phase options.

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What does Peak Sun Hours mean?

Peak sun hours estimate the equivalent number of hours per day when solar irradiance averages 1000 W/m².

When does Peak Sun Hours matter for TS4 module-level optimization and monitoring?

In solar projects, this term helps teams describe equipment, design assumptions, documentation, or field workflows with less ambiguity. Precise vocabulary reduces mistakes between sales, design, installation, inspection, and support.

Practical design considerations

Use the term consistently across product pages, technical documents, and support content.

Why this matters for Tigo systems

This term relates to TS4-A-O, TS4-X-O, EI Inverter (US), EI Inverter (EU) only when current product documentation supports the application.

Related Tigo resources

Related Tigo Support: For design, installation, commissioning, or troubleshooting details, see TS4 PV Module Compatibility and ESS Real Talk: Starting large loads.