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Solar options differ by when power arrives

Pin the place, then say on-grid or off-grid. On-grid is a cost comparison: generate the most solar, shift when energy arrives by facing, or generate the most and add the battery that pays on this load and kit. Usage is Living, hot water, cooling, heating, and EV so you can see them add up. Cooling and heating are how much of the house and how often, not a kW rating. Off-grid sizes a winter kit. Typical retail FiT is still flat — shift is mostly about not buying at peak.