Ways to pay
Propel — own it, keep the tax credits Enphase equipment
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LightReach TPO non-Propel equipment
Quote on request
Equipment outside the Propel AVL (Tesla, etc.) is financed through the LightReach program — pricing follows after design review.
Estimates for discussion. Final Propel pricing is confirmed at application; production modeled with NREL PVWatts® for this address's climate.
Model basis & assumptions
Production: NREL PVWatts® v8 (the industry-standard U.S. model), run per roof face at each face's own tilt & azimuth, using NREL's default loss framework — soiling 2%, mismatch 2%, wiring 2%, connections 0.5%, light-induced degradation 1.5%, nameplate 1%, availability 3% (≈11% combined; shading entered separately per site).
Roof geometry & per-panel sunlight: Google Solar 3D aerial model (imagery date shown above).
Battery economics: NEM 3.0 net-billing — exports valued at $0.06/kWh (published avoided-cost range $0.05–0.08), ~33% of production self-consumed directly without storage (California studies), 90% battery round-trip efficiency, 90% usable capacity.
Weather varies roughly ±10% year to year; these are good-faith estimates, not a production or savings guarantee. Final layout, structural and electrical design are confirmed by engineering at permit.