An existing generator should be part of the initial solar discussion. Different power sources need a coordinated design, and customers should not assume that equipment can simply be connected together.
Document the existing arrangement
Provide generator details, switching information and any available electrical drawings. Explain which loads it supplies and how it is operated. The design team should assess the intended interaction and identify changes that require the relevant electrical professional.
Ask for clear operating instructions
The final proposal and handover should describe how the system is intended to behave under normal and interrupted supply conditions. Identify who is authorised to operate controls and who provides support. Do not improvise switching arrangements or bypass protective equipment.
Describe every power source in the project brief
Provide generator ratings, operating routines and the existing changeover arrangement to the design team. Ask how solar, storage and generator operation will be coordinated and which operating combinations are allowed. A generator should not simply be connected into a solar installation based on matching power ratings. Controls, isolation and protection need a coordinated design and an owner explanation.
Your practical checklist
- Share generator and switching records
- Request an assessed integration plan
- Keep written operating responsibilities and instructions
Can a generator be treated like the utility grid?
Do not assume equivalence. The proposed equipment and integration arrangement must support the intended operation.
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