Florida solar calculator
Solar Panel Calculator for Florida: Cost, Size & Savings
Estimate system size, panels, roof space, gross cost, savings, and payback using Florida starter assumptions.
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Calculate solar for Florida
Enter monthly kWh or electric bill. The calculator uses state-level assumptions and shows the math behind the result.
Your estimate
Example resultYou likely need 20-24 panels
Estimated system size: 8.7 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
- 8.7 kW
- Sized for your target offset and system loss assumption.
- Likely panel count
- 20-24
- Centered around 22 panels at 400W equivalent.
- Roof space
- 531 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
- $19,920 - $26,415
- Before verified incentives, financing, or battery costs.
- Gross cost per watt
- $2.30 - $3.05
- Before incentives. Useful for comparing installer quotes.
- Annual savings
- $1,175
- Based on state residential rate and self-consumption assumption.
- Payback
- 17.0 years - 22.5 years
- Simple gross-cost payback estimate.
Annual usage: 10,800 kWh
Annual production target: 10,800 kWh
State rate: 15.38 cents/kWh
Export assumption: Partial export credit
Direct solar use: 5,940 kWh
Modeled exports: 4,860 kWh
Panel count view
20-24 panels
Estimate shape
Production, savings, and payback
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
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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.
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Assumptions behind this estimate
- Florida 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: 1,450 kWh/kW/year
SolarCalcNow provides planning estimates only. Results are not installer quotes, engineering designs, tax advice, financing recommendations, or utility interconnection approval.
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Residential rate
15.38 cents/kWh
EIA Electric Power Monthly, Table 5.6.A, April 2026 residential price
Production assumption
1,450 kWh/kW/yr
MVP uses state-level starter yields. Replace with ZIP/PVWatts API values before making location-specific claims.
Cost range
$2.30-$3.05/W
Starter installed-cost range for planning only.
Planning example
A 900 kWh/month home in Florida
This example uses the same calculator engine as the interactive form: 400W panels, low shade, 100% target offset, and no ZIP-level PVWatts override.
System size
8.7 kW
Panel range
20-24 panels
Roof area
531 sq ft
Gross cost
$19,920-$26,415
Annual savings
$1,175
Simple payback
17.0 years-22.5 years
Usage sensitivity
How monthly kWh changes the Florida result
These rows keep every input fixed except monthly usage. If your home is closer to 600 or 1,200 kWh/month, this gives a faster sanity check than reading one generic state paragraph.
| Usage | System | Panels | Gross cost | Payback |
|---|---|---|---|---|
| 600 kWh/mo | 5.8 kW | 13-17 | $13,280-$17,610 | 17.0 years-22.5 years |
| 900 kWh/mo | 8.7 kW | 20-24 | $19,920-$26,415 | 17.0 years-22.5 years |
| 1,200 kWh/mo | 11.5 kW | 27-31 | $26,560-$35,221 | 17.0 years-22.5 years |
Local context
What changes the estimate in Florida?
Solar production is generally strong, while storm readiness and insurance context may affect decisions.
- Strong sun
- Storm resilience questions
- Roof age matters before installation
Before using this as a purchase decision, compare a no-battery and battery quote, verify your utility export rate, and check current incentives from state or utility sources.
Example solar estimate for Florida
For a home using 900 kWh per month, the Florida starter model estimates about 8.7 kW, 20-24 panels, roughly 531 sq ft of roof area, and a gross installed-cost range of $19,920-$26,415. Simple payback is shown as 17.0 years-22.5 years before verified incentives, financing, batteries, roof work, or utility-specific export rules.
Electricity rate sensitivity
Florida estimates use 15.38 cents/kWh as the residential rate assumption. Higher retail rates can improve the value of self-consumed solar, while lower rates usually make system size, export credit, and installed cost more important to the payback result.
Net metering and export value
Florida net metering and utility rules should be checked before using exported kWh as full retail savings in a purchase decision. SolarCalcNow's default advanced setting models exported kWh below retail value until utility-specific rules are verified. This keeps the planning estimate conservative when a home exports more power than it uses immediately.
Production and roof-fit context
The current production assumption is 1,450 kWh per kW per year. This is a state-level starter value, not a roof-specific PVWatts result. Actual output can change with azimuth, tilt, shade, snow, weather, usable roof planes, setbacks, inverter choice, and module degradation.
Cost and incentive guardrails
The gross cost range uses a starter benchmark of $2.30-$3.05/W. SolarCalcNow does not subtract incentives from this estimate unless each incentive has an official or reviewable source, updated date, eligibility note, active status, and explicit permission to be included in net-cost math. Use the quote checker to compare installer price per watt against the same gross-cost baseline.
Data status
Sources behind this Florida estimate
Electricity rate
EIA Electric Power Monthly, Table 5.6.A, April 2026 residential price
Updated 2026-06-25 - Confidence: official
Solar production
PVWatts-style starter production assumption
Updated 2026-07-22 - Confidence: starter-assumption
Installed cost
MVP installed-cost starter range informed by 2026 marketplace benchmarks
Updated 2026-06-24 - Confidence: market-benchmark
FAQ
Common solar calculator questions
How many solar panels do I need in Florida?
It depends on your monthly usage, target offset, shade, panel wattage, and roof layout. The Florida calculator starts from the state rate and a state-level production assumption.
What electricity rate does SolarCalcNow use for Florida?
The current MVP uses 15.38 cents/kWh from EIA's March 2026 residential state table. EIA marks recent values as preliminary.
Are Florida incentives included?
Not by default. Incentives need source, updated date, eligibility, and active status before they are included in net-cost calculations.
How does net metering affect a Florida solar estimate?
Florida net metering and utility rules should be checked before using exported kWh as full retail savings in a purchase decision. If exported solar is credited below the retail rate, annual savings and payback can be lower than a simple 1:1 net metering estimate.
Why is the Florida result still a planning estimate?
A state-level calculator cannot see roof orientation, shade, electric panel capacity, utility export rules, financing, or installer pricing. Use it to plan, then compare site-specific quotes.
Does ZIP code change the Florida estimate?
It can when live PVWatts lookup is configured and available. If not, SolarCalcNow keeps the state-level production fallback visible in the assumptions.