Solar Design Studio | Free Engineering Estimate Tool

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Enter an address or upload a utility bill

Satellite imagery, automatic roof detection, and panel placement will load once you pick a location.

View

Panel Energy (kWh/yr)

Solar Mason Engineering Program

Customer

Upload Your Utility Bill

Tap here or drag a PDF. Auto-fills address, usage & rate. Processed in-browser.

Project Address

Or enter annual kWh

Project Class

Electrical Service

Contact

Customer / Company Name

Phone

Project Notes

Configuration

Mount Type

Roof mode: auto-detects segments from Google Solar API and places panels on detected roof faces.

Panel Layout

Awaiting roof analysis

Panels

0of 0

0 — 0

Tilt (°)

Azimuth (°)

No arrays placed

Select an address to analyze roof segments.

Racking System

Auto-selects based on site location (wind / snow load)

Environmental Inputs (ASCE 7-22 / IBC)

Wind speed (mph)

Exposure

Snow load (psf)

Frost depth (in)

Soil class

Risk category

Place an AVANS section to compute design loads.

⚠️ PRELIMINARY SIZING ONLY. Calculations per ASCE 7-22 (wind/snow), ACI 318-19 (concrete pier), Broms 1964 (cohesive lateral), Meyerhof 1976 (granular bearing). Final foundation design requires a site-specific geotechnical investigation and a Pennsylvania-licensed Professional Engineer (PE) structural seal per IBC §1604.4. Solar Mason does not warrant these calculations as construction-ready.

Obstructions

None drawn

Panel Model

Don't see your panel? Upload Module Datasheet (PDF) — we'll auto-extract specs for this session.

To permanently add a panel to our catalog, email the datasheet to engineering@solarmason.com.

Tilt (°)

Azimuth (°)

Losses (%)

—

System Size

0.00kW DC

Active Panels

0panels

Inverter Technology

Inverter Type

Inverter Brand

Don't see your inverter? Upload Inverter Datasheet (PDF) — we'll auto-extract specs for this session.

To permanently add an inverter to our catalog, email the datasheet to engineering@solarmason.com.

EV Charging (optional)

Electric Vehicle

Select a vehicle to estimate annual charging load

Annual EV Load

Added to your baseline for sizing

0 kWh/yr

⚡ Bidirectional Charging Capable

Additional Fleet Vehicles (up to 4 — residential)

Charger Hardware (goes in BOM)

Don't see your charger? Upload Charger Datasheet (PDF) — auto-extract kW, amps, plug type.

To permanently add a charger, email the datasheet to engineering@solarmason.com.

Battery Backup (optional)

Battery System

Choose a battery to size your backup. Auto-defaults to match your inverter brand.

Don't see your battery? Upload Battery Datasheet (PDF) — auto-extract usable kWh, continuous kW, peak kW.

To permanently add a battery, email the datasheet to engineering@solarmason.com.

Recommended

0 batteries

Total Usable

0 kWh

Continuous

0 kW

Peak / Surge

0 kW

Bottleneck

—

⚡ Bidirectional EV Charging Available

Main Panel & Service

Existing Main Service

Service Voltage

Service Capacity Analysis

Add panels to evaluate the service.

Force-include service upgrade in BOM (even if not strictly required)

Include net-meter base + production meter socket

Critical-loads sub-panel (battery backup integration)

Financial Inputs

Auto-detects from bill, or tap to override.

$/W

$/kWh

Escalation %

—

0% Residential §25D ended Dec 31, 2025 (OBBB). No federal credit for cash/loan purchases.

30% still available via lease / PPA

TPO systems (lease, PPA, prepaid) qualify under §48E through 2027. The lessor claims the credit and lowers the monthly rate. Switch to Commercial to model a TPO arrangement.

Incentives & Credits

Auto-detected based on your project's state and utility. Toggle any line on/off — values flow into the 25-year financial model. Hover or tap a type badge for a plain-English explanation.

SRECongoing market income Rebateupfront cash back Tax Creditreduces tax bill Exemptionavoids tax increase Net Meteringbill credit

Enter an address or upload a bill to auto-detect incentives

Modeling Results

System Size

—

kW DC

Annual Production

—

kWh/year (NREL)

Specific Yield

—

kWh/kW/year

System Cost

—

before incentives

Net Cost

—

after ITC

Year 1 Savings

—

at current rate

Payback

—

years

25-Year Savings

—

with escalation

Monthly Production Breakdown (PVWatts)

Bill of Materials

Place panels and hit Calculate to generate the BOM

How to use 2D & 3D modes

2D Mode

Tap any panel on the map to add or remove it individually. Grey outlines are inactive panels you can click to activate.
Drag the slider to quick-select the top N highest-producing panels.
Edit segment angles in the Panel Layout panel — type a new tilt or azimuth and hit Apply to rotate every panel in that segment.
Switch to Ground Mount to manually click-place panels on land, drag to reposition, or duplicate rows/columns.
Draw obstructions to mark chimneys, vents, or skylights — panels inside will be excluded from production.

3D Mode

Click N / E / S / W in the top-right corner to orbit the house at a 45° angle from each compass direction.
Drag the view to rotate · scroll to zoom · right-click drag to pan the camera.
Click any panel in 3D to add or remove it — same as 2D mode. Inactive panels show as faint outlines you can re-enable.
Auto-loads first when you pick an address. Falls back to 2D if Google Photorealistic 3D Tiles aren't available for the location.
Click the 2D toggle button to switch to flat editing mode — your choice is remembered for future addresses.