San Diego solar guides and comparisonsReviewed July 2026
Solar basics

How Much Solar Do You Need?

Start with annual kilowatt-hours, not home square footage.

Reviewed July 2026

Home size alone does not determine solar size. Begin with at least 12 months of usage, then adjust for future EV charging, electrification, pool equipment and efficiency changes.

Avoid blind oversizing

Under time-varying export pricing, adding panels primarily to produce low-value exports may not improve the economics. Ask the installer to separate existing load, future load and expected exports.

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Sources

Rules, rates, products and programs change. Verify current information with the linked official source and the final written contract.

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