Path-Q Solar

Can one inverter and monitoring platform serve solar panels installed on both a house and a detached workshop?

Answer

Possibly, if the buildings can be connected through a suitable electrical design and the inverter supports the array layout, voltage, distance, and communications requirements. Separate inverters may be more practical when the buildings have independent services, long cable runs, different orientations, or difficult interconnection paths.

Key points

  • The design must account for DC or AC cable distance, voltage drop, conduit routing, and disconnect locations.
  • Separate roof orientations may require independent MPPT inputs or separate inverters.
  • Monitoring platforms may combine devices, but compatibility and communications coverage must be confirmed.
  • The building electrical services and grounding arrangement affect whether a shared architecture is appropriate.

What it depends on

  • Distance and cable route between buildings
  • Electrical service and panel arrangement at each building
  • Panel orientations, shading, and array sizes
  • Inverter input, communications, and monitoring capabilities

Risks and trade-offs

  • A shared inverter can reduce equipment duplication but may create a single point of failure.
  • Long runs can increase conductor size, voltage drop, trenching, and installation cost.
  • Separate inverters may improve flexibility but add equipment and monitoring complexity.

Information you may need

  • Site plan with building distances and cable routes
  • Electrical service and panel details for both buildings
  • Array layouts and shading conditions
  • Candidate inverter and monitoring specifications

Your next step

What to do next

Request a comparison of shared-inverter and separate-inverter layouts that includes cable losses, trenching, service work, monitoring, and failure scenarios.

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SQ02677