Home›Financial & ROI›Solar Gas Station Canopy Calculator

Solar Gas Station Canopy Calculator

Enter canopy area, pump islands, convenience store, and EV chargers — get system size, bifacial production bonus, ITC + MACRS incentives, EV charging revenue, and payback period.

Gas station canopy inputs
sq ft
$/kWh
$/kWh
chargers
chargers
Gas station canopy solar estimate
96.0 kW system — 240 bifacial panels on canopy
Effective PSH (bifacial +10%)5.50 hrs/day
Annual solar production154,176 kWh/yr
Total site energy use80,227 kWh/yr
Energy offset100%
Annual electricity savings$10,430/yr
Total annual benefit$10,430/yr
Gross system cost$273,600
Federal ITC (30%)-$82,080
MACRS 5-yr depreciation-$28,728
Net cost after incentives$162,792
Payback period15.6 yrs
25-year total savings + revenue$260,738
Bifacial panel advantage: Gas station canopies are ideal for bifacial solar panels. Light reflected off the concrete/asphalt forecourt is captured by the rear face, generating 8-12% more power than standard monofacial panels at minimal extra cost.
Link copied to clipboard

How to Use This Calculator

Enter canopy area and pump islands

Start with your total canopy footprint in square feet — this determines exactly how many bifacial solar panels fit on the structure. Each 400W bifacial panel occupies about 20 square feet. Then select the number of pump islands; each island uses approximately 4 kWh/day for card readers, LED pump topper lights, and payment terminals.

Add convenience store and EV chargers

Toggle the convenience store if your site has one — a typical c-store uses 150-200 kWh/day for refrigeration cases, HVAC, LED lighting, and POS systems. This often represents the largest single load at the site, making it the best candidate for solar offset. Enter EV charger counts separately; the calculator computes EV charging revenue from the markup between your utility cost and customer sell rate.

Understand bifacial panel advantage

Gas station canopies are uniquely ideal for bifacial solar panels. The highly reflective concrete or asphalt forecourt bounces light onto the rear face of the panels, generating a 8-12% production bonus vs. standard rooftop installations. This bonus is applied automatically in the calculation.

The Formula

Panels = Canopy sq ft ÷ 20 sq ft/panel System kW = Panels × 400W ÷ 1,000 Effective PSH = Location PSH × 1.10 (bifacial bonus) Annual production = System kW × 1,000 × Effective PSH × 365 × 0.80 Site loads = Pump kWh + Lighting kWh + C-Store kWh + EV kWh Savings = Min(production, load) × Utility rate EV revenue = Solar-powered EV kWh × (Sell rate − Utility rate) Gross cost = System kW × 1,000W × $2.85/W (canopy install premium) Net cost = Gross − ITC(30%) − MACRS(10.5%) Payback = Net cost ÷ (Savings + EV revenue)

Canopy solar installation costs slightly more per watt than rooftop — typically $2.70-3.00/W — due to structural reinforcement and specialized mounting hardware. However, the bifacial production bonus and EV charging revenue opportunity typically more than compensate for the higher installation cost.

Example

QuickFuel Plus — Phoenix, AZ (4-island with c-store and EV)

A 4-island gas station in Phoenix with a convenience store, 2 DCFC chargers, and 4,800 sq ft of canopy area. Utility rate $0.11/kWh, EV sell rate $0.42/kWh.

Canopy area4,800 sq ft
Pump islands4 (8 dispensers)
C-storeYes
DCFC chargers2 × 50 kW
LocationPhoenix, AZ (6.5 PSH)

Result

Bifacial panels240 × 400W = 96 kW
Effective PSH7.15 hrs (bifacial)
Annual production~200,000 kWh/yr
ITC + MACRS benefit~$110,000
EV charging revenue~$22,000/yr
Payback~4.8 years

Arizona's exceptional sunshine combined with bifacial panels, a busy c-store load, and DCFC charging revenue creates one of the best solar ROI profiles in the commercial sector. After the 4.8-year payback, this station generates over $50,000/year in pure profit from solar for 20+ years.

FAQ

Bifacial solar panels generate power from both the front face (direct sunlight) and the rear face (reflected light). Gas station forecourts are covered in highly reflective concrete or light-colored asphalt with no obstructions under the canopy — ideal for rear-face reflection. The albedo (reflectivity) of concrete is 25-35%, compared to 10-15% for a dark rooftop. This generates a consistent 8-12% production bonus. Since the canopy structure must be built anyway, there's virtually zero incremental cost to choose bifacial over standard panels.
Most modern fuel canopies are engineered to handle additional loads and can support solar with minimal structural reinforcement. A structural engineer should assess the specific canopy before installation — standard solar panels weigh 40-50 lbs each, and a full canopy install adds 3-6 lbs/sq ft of dead load. Many gas station solar projects install on new or recently replaced canopies to avoid retrofitting issues. Galvanized steel canopies generally handle solar loads well; older aluminum structures may require reinforcement.
The revenue model is simple: you buy electricity from the utility at $0.10-0.15/kWh and sell it to EV customers at $0.30-0.55/kWh. When solar powers the EV charging directly or via offset, your cost is reduced to near zero, making the full sell price profit margin. A single 50 kW DCFC charging 2 hours daily at $0.42/kWh generates ~$15,000/year in revenue against ~$1,800 in electricity cost — a 700%+ markup. Adding DCFC chargers to a gas station canopy solar project dramatically improves ROI.
Yes — gas stations have additional requirements beyond standard commercial solar permits. NEC Article 690 and NFPA 30A (Code for Motor Fuel Dispensing Facilities) require solar equipment to be installed outside hazardous classified areas (typically 18 inches above the canopy surface is considered non-classified). All wiring must be rated for the environment. Some jurisdictions require fire department review and specific disconnects. Use a solar installer with documented gas station experience — it's a specialty installation that general commercial solar contractors may not be familiar with.
Gas station canopy solar typically pays back in 4-7 years depending on location, electricity rates, and whether EV charging is included. Key factors: (1) Convenience store load — a c-store creates a steady, large electricity demand that solar can offset reliably. (2) EV charging revenue — adds a revenue stream on top of savings. (3) Location — Arizona/Nevada stations at 6.5 PSH produce 70% more than Northeast stations. (4) MACRS + ITC — together reduce net cost by 40%. After payback, a gas station canopy solar system generates $20,000-100,000/year in profit depending on system size.

Related Calculators

🏋 Solar Gym Calculator
Size solar for a gym or fitness center with MACRS and demand charge reduction.
🔌 EV Charging Calculator
Calculate solar panels needed to power EV charging stations.
📄 ITC Tax Credit Calculator
Calculate your 30% federal investment tax credit for commercial solar.
💰 Solar Savings Calculator
Estimate annual electricity savings from any commercial solar system.

Embed This Calculator

Free to embed on your website. Just copy this code:

<iframe src="https://solarsizecalculator.com/solar-gas-station-canopy-calculator"
  width="100%" height="700" frameborder="0"
  title="Solar Gas Station Canopy Calculator"></iframe>