About Sonnen

Energy-system planning should leave a practical evidence trail.

Sonnen's planning approach centers on the project context and documentation that technical teams need to compare a path with care.

Application fit

Selection begins with the operating setting, constraints, and objectives of the project.

Documentation first

Datasheets, installation guidance, and compliance references are organized for review.

Lifecycle planning

Monitoring, serviceability, and support questions remain visible as the project develops.

Evidence belongs beside the recommendation.

Applicable IEC, CE, and local requirements each need an appropriate verification path; they are not universal guarantees.

Keep every handoff practical.

Technical handoff

Record system assumptions and documentation destinations before a configuration is finalized.

Project coordination

Use application, region, and power-range inputs to prepare a useful next discussion.