Solar Carports: Turning Parking Areas Into Power-Generating Assets

Large parking areas are usually treated as space for vehicles.

A solar carport gives the same area a second purpose: electricity generation.

Instead of installing photovoltaic modules directly on an existing roof, solar panels are mounted on engineered steel canopies above parking spaces. The structure can provide shade for vehicles while generating electricity for nearby offices, factories, hospitals, universities, commercial plazas or other facilities.

The U.S. Department of Energy identifies solar carports and parking shade structures as established ways to combine photovoltaic generation with another useful site function.

For businesses with large parking areas, limited rooftop space or future EV-charging plans, a solar carport can turn underused real estate into part of the facility's energy infrastructure.

What Is a Solar Carport?

A solar carport is an elevated structural canopy designed to support photovoltaic modules above vehicle parking areas.

A typical system may include:

• Structural steel columns and beams.
• Solar mounting rails.
• PV modules.
• Inverters.
• DC and AC cabling.
• Electrical protection.
• Earthing.
• Drainage provisions.
• Monitoring equipment.
• Lighting or EV-charging infrastructure where included.

Unlike a normal rooftop solar system, the supporting structure is itself a major engineered component of the project.

That makes structural design, foundations, vehicle clearance and drainage especially important.

Why Use a Parking Area for Solar?

Parking areas can provide valuable solar-generation space without occupying additional land.

This can be useful when:

• The building roof is already crowded.
• The roof cannot accommodate the desired capacity.
• The property has substantial open parking.
• Vehicle shading is valuable.
• The organization wants visible renewable-energy infrastructure.
• Future EV charging is being considered.

DOE specifically notes that solar canopies can make use of areas that might otherwise not be considered suitable for solar PV while also providing vehicle shade and potential EV-charging readiness.

Solar Carports Provide More Than Electricity

The value of a solar carport should not be evaluated only from electricity generation.

A well-designed installation can potentially provide several functions at the same time.

These include:

Electricity generation.

Vehicle shading.

Weather protection.

More productive use of parking infrastructure.

Potential integration with lighting.

Potential EV-charging infrastructure.

DOE guidance identifies vehicle shade, EV-charger readiness and reduced heat-island effects among the potential benefits of solar canopies.

The exact business case depends on the site and project objectives.

Solar Carports vs Rooftop Solar

Both systems generate photovoltaic electricity, but their engineering requirements are different.

Rooftop solar uses an existing building structure as the primary support.

A solar carport requires a purpose-built elevated structure.

That means a carport project may involve additional work such as:

• Structural steel fabrication.
• Foundations.
• Excavation.
• Column placement.
• Vehicle-clearance design.
• Drainage.
• Protective barriers.

Carports can therefore cost more per installed watt than straightforward rooftop systems.

However, they can create value where rooftop capacity is limited or where parking shade and other infrastructure benefits are important.

The correct comparison should consider the complete project, not only panel cost.

Start With the Parking Layout

A carport should be designed around how the parking area actually operates.

Before structural design, review:

• Number of parking spaces.
• Vehicle movement.
• Entry and exit routes.
• Parking-space dimensions.
• Pedestrian paths.
• Existing lighting.
• Drainage.
• Underground utilities.
• Fire and emergency access.
• Future site plans.

The goal is to add solar without creating an impractical parking layout.

Column Placement Matters

Structural columns should be positioned carefully so they do not unnecessarily interfere with parking spaces or vehicle movement.

Poorly located columns can:

• Reduce usable parking width.
• Create vehicle-impact risk.
• Make doors difficult to open.
• Affect turning movement.
• Create pedestrian obstacles.

Some carport designs use centrally positioned or cantilevered structures to reduce the number of columns near parking spaces.

DOE's PV installation guidance specifically highlights column positioning and vehicle-clearance protection as important carport design considerations.

Structural Engineering Is Critical

A solar carport is both an electrical system and a structural system.

The structure must support:

• Solar-module weight.
• Steel framing.
• Wind loads.
• Applicable environmental loads.
• Electrical equipment where mounted.

Foundation design must also account for site and structural conditions.

This should not be approached as an oversized residential mounting structure.

E&E Industries currently describes its structural fabrication capabilities as including engineering, stress analysis, wind-load planning, steel fabrication and corrosion-resistant finishing for solar and parking structures.

Wind Load Deserves Particular Attention

Solar carports are elevated and exposed.

That can make wind loading an important engineering consideration.

The array can experience upward and lateral forces during high winds, and those forces must be transferred safely through the steel structure and foundations.

Design should therefore consider factors such as:

• Canopy geometry.
• Height.
• Panel tilt.
• Site exposure.
• Structural members.
• Connections.
• Foundations.

DOE guidance also identifies structural and mechanical design challenges as an important part of reliable long-term solar canopy development.

Drainage Should Be Designed, Not Improvised

Solar panels installed above vehicles interact with rainwater differently from an open parking lot.

A project may require carefully designed:

• Gutters.
• Downpipes.
• Drainage routes.
• Water-discharge locations.

Water should not simply collect or discharge unpredictably onto vehicles, walkways or electrical infrastructure.

Drainage design should be coordinated with the canopy geometry and site layout from the beginning.

Solar Orientation and Tilt Still Matter

A parking canopy is a structure, but it is also a solar array.

Panel direction, tilt and shading still affect electricity generation.

The carport layout should therefore consider:

• Solar orientation.
• Module tilt.
• Nearby buildings.
• Trees.
• Other structures.
• Row-to-row shading.
• Desired generation profile.

Our solar panel direction, tilt and shading guide explains why the highest panel count does not automatically produce the strongest energy result.

Electrical Design Is Part of the Carport

Because solar modules are spread across an elevated parking structure, electrical routing should be designed carefully.

The project may need:

• Protected DC cable routes.
• AC cabling.
• Inverter locations.
• Earthing and bonding.
• Surge protection.
• Isolation.
• Distribution equipment.
• Monitoring infrastructure.

Cables should be organized, mechanically protected and accessible for appropriate maintenance.

Our solar-system safety guide explains why earthing, breakers, SPDs and isolation should be part of the engineering scope rather than added later as generic accessories.

Should the Inverter Be Installed on the Carport?

It depends on the project.

Inverters may be installed:

• On or near the canopy.
• In a nearby electrical area.
• Inside a dedicated equipment room.

The decision should consider:

• Cable distance.
• Temperature.
• Ventilation.
• Weather exposure.
• Maintenance access.
• Security.
• Equipment environmental rating.

There is no universal location suitable for every carport.

Solar Carports Can Support EV Charging

Solar carports can be particularly suitable locations for electric-vehicle charging because electrical infrastructure can be planned around the parking area.

However, installing solar panels above parking spaces does not automatically mean the system can directly support any number of EV chargers.

EV charging requires separate consideration of:

• Charger power.
• Number of chargers.
• Simultaneous demand.
• Building electrical capacity.
• Solar production.
• Grid supply.
• Control strategy.
• Battery storage where applicable.

A carport can be designed as EV-ready even when chargers are planned for a later phase.

DOE specifically identifies EV-charger readiness as a useful consideration during solar canopy planning.

Self-Consumption Still Determines Financial Value

A solar carport may generate substantial electricity, but the financial value depends on what happens to that energy.

For a commercial or institutional facility, solar power may be consumed directly by:

• HVAC systems.
• Lighting.
• Machinery.
• Offices.
• Refrigeration.
• Other daytime loads.

Under Pakistan's current net-billing framework, electricity imported from the distribution company is billed at the applicable tariff, while eligible exported electricity is credited according to the National Average Energy Purchase Price.

That makes daytime load matching and self-consumption important when evaluating carport economics.

Our commercial solar ROI guide explains why direct consumption and exports should be modeled separately.

How Much Solar Can a Parking Lot Support?

There is no fixed number of kilowatts per parking area that applies to every project.

Capacity depends on:

• Parking dimensions.
• Number of spaces.
• Canopy geometry.
• Module wattage.
• Structural layout.
• Orientation.
• Shading.
• Access requirements.
• Electrical constraints.

A preliminary layout can estimate capacity, but final sizing should come from engineering.

A Real Solar Carport Example in Pakistan

E&E Industries currently lists a 200 kW solar parking-lot project at Ayyub Hockey Stadium.

According to the published case study, the installation uses an elevated steel parking structure supporting a 200 kW solar array and associated electrical infrastructure.

This illustrates one of the key advantages of solar carports: the parking area continues serving its original function while also becoming part of the site's power-generation infrastructure.

Who Can Benefit From Solar Carports?

Solar carports can be relevant for sites such as:

• Factories.
• Hospitals.
• Universities.
• Shopping centers.
• Corporate offices.
• Hotels.
• Sports facilities.
• Logistics centers.
• Large residential or mixed-use developments.

The strongest candidates generally have meaningful parking area, useful daytime electricity demand and a long-term reason to invest in durable site infrastructure.

What Should Be Included in a Solar Carport Proposal?

A professional proposal should clearly define:

• Solar capacity.
• Module specifications.
• Inverter specifications.
• Structural design.
• Steel and corrosion protection.
• Foundation scope.
• Electrical protection.
• Cable routing.
• Drainage.
• Lighting where applicable.
• EV readiness where applicable.
• Monitoring.
• Testing and commissioning.
• Warranties.
• Project exclusions.

Our solar quotation and BOQ guide explains why major structural and electrical components should be documented before procurement.

A Solar Carport Is Both an Energy and Infrastructure Project

Solar carports offer an opportunity to use the same land twice.

Vehicles continue using the parking area while the structure above generates electricity.

But this benefit also makes the project more complex than simply adding modules to a roof.

Structural engineering, foundations, vehicle movement, drainage, electrical protection, solar design and long-term maintenance all need to work together.

E&E Industries currently designs and fabricates customized solar carport and parking structures and has delivered a 200 kW solar parking installation at Ayyub Hockey Stadium.

For commercial and institutional properties with substantial parking areas, a properly engineered solar carport can turn existing infrastructure into a productive energy-generating asset.

Frequently Asked Questions

What is a solar carport?

A solar carport is an elevated parking structure that supports photovoltaic modules, allowing the parking area to provide vehicle shade while generating solar electricity.

Are solar carports more expensive than rooftop solar?

They can be because they require purpose-built steel structures, foundations and additional civil work. The comparison should also consider the value of vehicle shade and use of otherwise underutilized parking space.

Can solar carports charge electric vehicles?

Yes, EV chargers can be integrated into or planned alongside a solar carport, but charger load and electrical capacity require separate engineering.

Are solar carports suitable for factories?

They can be particularly useful for factories with large parking areas and strong daytime electricity demand, especially where additional rooftop solar space is limited.

How much solar can fit over a parking lot?

Capacity depends on parking dimensions, number of spaces, module size, structural configuration, orientation and site constraints. A layout study is required for an accurate estimate.

Do solar carports require foundations?

Typically, elevated steel carport structures require engineered foundations appropriate to the structural loads and site conditions.

Can an existing parking lot be converted into a solar carport?

Often yes, but the site should first be evaluated for layout, underground services, foundations, drainage, vehicle movement and electrical interconnection.