Honest economics, no sales scripts
Run the numbers yourself.
Adjust your bill, pick your utility, and choose your configuration. We use real NEM 3.0 export rates, the current prepaid-lease savings, and conservative production assumptions — the same logic we apply when we design a real system.
Tell us about your home
Rough numbers are fine. We'll refine in a discovery call.
SCE is under NEM 3.0 — battery storage strongly recommended.
Estimates use 5.8 peak sun hours (SoCal average), 4.5% annual rate inflation, and conservative production assumptions. Real designs use 12 months of utility data.
Investment breakdown
- Gross system cost
- $34,750
- − ~30% prepaid-lease savings*
- −$10,425
- Net cost
- $24,325
25-year financial position
Cumulative cost or savings vs. staying on the grid (4.5% annual rate growth)
Monthly bill, before and after
What's in the model
- Production: 5.8 peak sun hours per day (SoCal average), 80% derating factor from rated DC to AC.
- Pricing: $3.50/W installed for premium-tier solar; ~$15,500 for a Powerwall-class battery (installed). Real quotes vary with roof complexity.
- NEM 3.0: SCE, PG&E, and SDG&E export rates use blended NEM 3.0 averages. LADWP, PWP, and RPU still use legacy net metering, which is much friendlier to solar-only systems.
- Rate inflation: 4.5% per year — historical SoCal average since 2010 has actually been higher; we round down to stay conservative.
- Prepaid-lease savings: ~30% of gross cost, passed through from the federal commercial clean-energy credit our financing captures. This is not a residential tax credit you file for — the 30% residential credit ended Dec 31, 2025.
- What's missing: SGIP battery rebate, utility-specific TOU optimization, shade modeling, roof-pitch derate. Your real design will include all of these.
See what your real design looks like.
This calculator gets you in the ballpark. A real design uses 12 months of your utility data, hourly shade modeling, and your specific roof — and it's free.