On-grid is the default when the grid is stable and the goal is bill offset. Excess generation is exported under the DISCOM’s net-metering rules.
Hybrid adds a battery so critical loads can run during an outage. It costs more per kW and needs a load list for inverter and bank sizing.
Off-grid is a separate design when there is no reliable grid. The questionnaire on this site points to a planning configuration only.
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