Lyra is geared toward designing grid-tied, single-phase, residential-scale PV systems in the United States.

The vast majority of projects which users create in Lyra are 5-30kW. This range is a bit of a "sweet spot" for the app in terms of equipment that we support, and the limits of what the app is capable of. However, you can still generate most other documents for larger systems, such as a System Datasheet, Concept Designs, and other reports.

We do not recommend using Lyra for designing systems larger than 35kW.


  • Maximum site size that can be defined with the aerial trace tool is 9000 sq. ft.

  • Maximum DC system size for which BOS configuration is available is 30kW.

  • Maximum Target Size that can be specified in the System Design is 35kw.

  • Maximum output current for BOS configuration is 200A/1.25 (which caps the OCPD at 200A).

  • Maximum number of inverters for single-line or three-line diagram generation is two (2) inverters, with up to four (4) strings per inverter. When using a microinverter, designs can have up to 8 branches.

  • Maximum number of inverters for BOS configuration is four (4) inverters.

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