Do I need to enter a phone number to use this solar calculator?

No. SolarCalcNow shows the estimate first. The optional quote form appears only after the calculator result.

Does SolarCalcNow sell my calculator inputs?

The calculator runs without requiring a lead submission. Printable report links can include estimate inputs in the URL, so keep those links private if ZIP or bill details feel sensitive.

Can I still compare installer quotes later?

Yes. Use the estimate as a baseline, then run the quote checker or quote checklist when an installer gives you a proposal.

No phone number. No signup. Estimate first.

Solar Calculator Without a Phone Number

Run a solar estimate before any quote request. SolarCalcNow shows system size, panel count, roof space, gross cost, savings, payback, and assumptions without making you talk to a sales team first.

Estimate firstNo forced leadOptional report

Run calculator Privacy policy

Estimate preview

Panels, cost, savings

System size7.8 kW

Payback window5-7 yr

ConfidenceHigh

No email required

Calculate before sharing contact details

Enter monthly kWh or electric bill. The calculator uses state-level assumptions and shows the math behind the result.

Monthly usage, kWhMonthly bill, $

Planning for new electric loads?

Add a simple monthly usage placeholder before sizing solar. Replace it with your actual bill or device estimate when you have it.

Need more than a placeholder? Calculate EV charging from annual miles and efficiency, then compare current and future solar size. Plan EV and other future home loads

StateZIP codeRoof typeUsed for planning context only; roof type does not change sizing or cost math without a site-specific quote.

ShadePanel wattsOffset target

Export valueAdvanced planning input. Your utility may use different net metering, net billing, or export-credit rules.Direct solar use

55%

Share of annual solar production used in the home before export. Replace this planning assumption with interval data when available.

Your estimate

Example result

You likely need 18-22 panels

Estimated system size: 7.8 kW. This is an estimate, not an installer quote.

Confidence

Medium

Planning estimate only — not an installer quote, engineering design, or tax advice.

Payback uses gross system cost before verified incentives, financing fees, batteries, and roof work.

Estimated system size: 7.8 kW; Sized for your target offset and system loss assumption.
Likely panel count: 18-22; Centered around 20 panels at 400W equivalent.
Roof space: 483 sq ft; Includes a spacing factor, not a final layout plan.
Annual production: 10,800 kWh; Modeled first-year output at the selected offset; not a production guarantee.
Gross cost: $18,445 - $23,939; Before verified incentives, financing, or battery costs.
Gross cost per watt: $2.35 - $3.05; Before incentives. Useful for comparing installer quotes.
Annual savings: $2,693; Based on state residential rate and self-consumption assumption.
Payback: 6.8 years - 8.9 years; Simple gross-cost payback estimate.

Annual usage: 10,800 kWh

Annual production target: 10,800 kWh

State rate: 35.25 cents/kWh

Export assumption: Partial export credit

Direct solar use: 5,940 kWh

Modeled exports: 4,860 kWh

Panel count view

18-22 panels

Estimate shape

Production, savings, and payback

Annual production target10,800 kWh

Annual savings$2,693

Payback6.8 years - 8.9 years

Save printable report Check an installer quote Compare equipment lines

Hide ZIP in printable report link

Privacy note: the printable report link stores estimate inputs in the URL, including ZIP and usage or bill values. Keep it private if those details are sensitive.

Local scenarios

Save estimates on this device

Compare a few assumptions without creating an account.

Saved scenarios stay in this browser only and may include ZIP, bill, and usage inputs. SolarCalcNow does not sync them or send those values to analytics.

No saved scenarios yet.

Assumptions behind this estimate

California state-level electricity rate and solar production defaults are used.
100% bill offset target.
400W solar panels.
14% system loss assumption.
Roof area uses about 21 sq ft per panel plus spacing factor.
Gross cost range excludes verified incentives, financing, batteries, roof work, and panel upgrades.
55% of annual solar production is modeled as directly used before export.
Export value assumption: Partial export credit.
Savings are energy-only and exclude fixed charges, minimum bills, demand charges, and time-of-use detail.
You provided monthly kWh usage.
State production defaults are used for this estimate.

Confidence drivers

Overall confidence: Medium.
You provided monthly kWh usage.
State production defaults are used for this estimate.

Expected production: 10,800 kWh

System loss: 14%

Export value: Partial export credit

Direct solar use: 5,940 kWh

Modeled exports: 4,860 kWh

State production default: 1,600 kWh/kW/year

SolarCalcNow provides planning estimates only. Results are not installer quotes, engineering designs, tax advice, financing recommendations, or utility interconnection approval.

Optional next step

Want installer quotes based on this estimate?

Your estimate stays visible. This form is optional and uses explicit consent.

Installer quote matching is not active yet. You can still calculate, save, and print your estimate before contacting installers directly.

Estimate first

The main result appears before any optional quote CTA. You can use the calculator for planning without submitting a lead.

Assumptions visible

The estimate shows rate, production, cost, export-value, and confidence assumptions instead of hiding the math.

Next steps stay optional

Save a printable report, check incentives, compare an installer quote, or leave. The quote form is not required.

What to do next

After you have a no-phone estimate, save the report, review incentive status, and compare any installer quote against the same assumptions.

Run main calculator Check incentives Check a quote Compare quotes Battery planner Quote checklist Methodology