Why are 25-year savings projections only estimates?

They rely on assumptions about future utility rates, solar production, equipment degradation, financing, maintenance, and home energy use. Those assumptions should be visible and tested before you rely on the result.

Does a lower solar payment always mean a better deal?

No. A lower payment can come from a longer term, lender fees, an escalator, or a structure where you do not own the system. Compare total cost, ownership, transfer terms, and incentive rights.

Aerial view at sunset of a rooftop solar home in a leafy Illinois neighborhood

SOLAR SAVINGS IN ILLINOIS

How solar savings actually work.

You already pay for electricity every month. The question is whether putting that money toward solar leaves you better off over time. Here's how to find out.

Build a transparent utility-cost baseline
Compare cash and financed proposals side by side
See which inputs actually change the result

Run the comparison ↓

REAL BILL→REAL ROOF→VISIBLE ASSUMPTIONS→TWO PATHS COMPARED

START HERE

First, see what staying with the utility costs.

Savings only mean something compared with what you'd pay without solar. Start with the bill baseline, then use a complete proposal to compare the solar path.

LIVE / 01

Build the utility baseline.

Enter your monthly bill to see the current annual cost and a simple reference that assumes the bill never changes. This does not calculate a solar payment or savings.

Monthly electric bill $220

Bill-only reference

Current annual electric bill$2,640

Current monthly bill$220/mo

25 years if the bill never changes$66,000

This arithmetic holds today's bill flat for context. It is not a utility forecast, solar quote, production estimate, or savings claim. A solar comparison requires actual usage, production, utility rules, equipment, incentives, financing, and remaining charges.

Replace assumptions with real numbers ↗

THE TWO PATHS

Utility costs vs. a home-specific solar offer.

A fair comparison carries both paths out over 25 years, including rate increases, panel output, financing, and the utility charges that remain after solar.

Conceptual framework only. No future utility rate or solar result is guaranteed.

AUTILITY-FIRST

Open-ended expense

BHOME SOLAR

Contract-specific cost path

TodayYear 25

WHAT MOVES THE NUMBER

Four things that
determine your savings.

Ranch home with rooftop solar panels and a rain-wet driveway in an Illinois neighborhood

Power used at home

Solar electricity used inside the home while it is produced can reduce utility purchases. Exported electricity receives the utility's applicable credit.

Two-story brick home with black shutters and rooftop solar panels

Your contract terms

Cash, loan, lease, and power purchase agreements have different prices, payment changes, fees, and ownership terms. No single payment structure applies to every offer.

Small solar farm beside an Illinois cornfield

Illinois incentives

Illinois Shines and utility rebates can lower your net cost when your home and contract qualify.

Solar advisor showing two homeowners payment options on a tablet at their kitchen table

How you pay

Cash, a loan, or a lease can produce very different results on the exact same roof. The structure matters as much as the system.

Solar from above

Rooftop solar across an Illinois neighborhood.

THE HONEST VERSION

Some homes shouldn't go solar.

Heavy shade, an aging roof, limited usable space, or bad contract terms can turn good technology into a bad purchase. If that's your situation, we'll tell you.

See if my home makes sense

01Twelve recent months of electricity use

02Delivery, supply, and fixed charges

03Roof planes, shade, pitch, and condition

04Production assumptions and system losses

05Cash price and financed price

06Rates, terms, fees, and transfer rules

Savings questions

Common questions about solar savings.

The headline number matters less than the assumptions and total cost behind it. Here's what to look for.

Browse every FAQ

That depends on the installed price, financing structure, current utility bill, production, incentives, and remaining grid charges. A useful comparison shows annual cash flow and cumulative results, not only the first payment.