Solar Panel Canopies: Definition, Types, and Key Benefits

A solar panel canopy is a self-supporting structure that integrates solar modules into its covering, allowing for the protection of vehicles or outdoor spaces while simultaneously generating electricity from renewable sources. They can be installed in residential, commercial, or public contexts and allow for the utilization of solar radiation to power buildings, lighting, or charging stations for electric vehicles.

When designing a solar panel canopy, it is essential to consider several factors that can influence the energy efficiency of the system. Among the factors that must be carefully assessed during the design of a solar panel canopy are the orientation of the canopy slope (which determines the amount of sunlight that the solar panels can capture) and shading.

To define these parameters, you can use a solar design software that allows you to verify in real-time the correct positioning of the solar field based on the actual conditions of the installation site and design any type of solar panel system (roof-mounted solar panel system, facade solar panel system, etc.).

What is a solar panel canopy?

The solar panel canopy is a structure designed to create solar canopies. These are widely used in car parks, allowing for maximum use of available space to generate solar energy.

A canopy, being equipped with solar panels, serves a dual purpose:

1. produces electricity by converting solar radiation into energy;
2. protects parked cars from bad weather, such as hail or heat waves, while guaranteeing shade.

Solar Panel Canopy – Solarius-PV

What are the main types of solar panel canopies?

Solar photovoltaic canopies are available in different types, each designed to meet specific needs and applications:

• solar panel canopies for parking lots;
• solar panel canopies for garden areas;
• solar panel canopies for bus stops;
• solar panel canopies for service stations.

Solar Panel Canopies for Parking Lots

This category is widely used in both public and private parking lots. Usually made with an aluminum structure, it is covered with PVC tarps and takes the form of a genuine canopy for vehicles. On top of it, solar photovoltaic panels are positioned to capture solar energy. This solution provides ideal coverage for parked cars, offering both shade and an opportunity for clean energy production.

Solar Panel Canopy for Parking Lots

Solar Panel Canopies for Garden Areas

This type of canopy is designed for green spaces, such as parks and gardens. It often features an off-grid photovoltaic system with storage, allowing the use of solar energy without the need for foundation excavations. Additionally, many of these canopies are equipped with charging stations for electric vehicles, making the area suitable for charging eco-friendly electric cars.

Solar Panel Canopy for Garden Areas

Solar Panel Canopies for Bus Stop Areas

This category of canopies is commonly installed at public transport stops. In addition to providing shade for waiting passengers, they are often equipped with solar panels to power the LED lighting of the stops, as well as for the charging of electronic devices such as smartphones and tablets. Furthermore, backlit advertising panels can be activated, providing opportunities for dynamic advertising.

Solar Panel Canopy for Bus Stop Areas

Solar Panel Canopies for Service Stations

With the advent of electric cars, installing a charging station powered by a solar panel canopy allows service stations to offer new services to travelers with significant savings on electric vehicle charging costs.

If the canopies serve as covered parking for cars, at the same time, the photovoltaic system harnesses the sun to produce energy that can be used immediately to charge the car itself, thanks to the connection with charging stations and Wall Boxes.

How to Design a Solar Canopy: Structure, Orientation, and Performance

As with the design of a rooftop photovoltaic system or an agrivoltaic system, the design of a solar panel canopy requires the development of a series of preliminary analyses.

These analyses involve:

1. the study of the energy needs, necessary to understand how many kWp are needed based on consumption;
2. the site analysis, factors such as the type of terrain, slope, orientation, accessibility, and any urban planning constraints are crucial for the efficiency of the installation;
3. the choice of the orientation and tilt of the solar panels, based on the estimate of solar radiation, using solar maps or diagrams. The correct tilt and orientation help optimize electricity production;
4. the calculation of shading, because when even a small part of a solar panel is shaded, its ability to generate electricity is significantly reduced;
5. the choice of the type of photovoltaic system. If canopies are designed to be connected to the grid, the energy produced by sunlight is not only used to power electrical devices near the canopy or to charge the electric car, but also to supply electricity to the house the photovoltaic system is connected to; if standalone canopies are designed, they are not connected to the grid and, thanks to photovoltaic batteries, the energy produced is stored.

After these preliminary evaluations, it is very important to develop a design for the key components of a solar panel canopy, namely:

• photovoltaic modules;
• inverter;
• electrical panel;
• wiring;
• anchoring and monitoring systems;
• optional storage battery;
• supporting structure of the canopy.

Technical and Application Aspects of the Photovoltaic System on a Canopy

In the case of a photovoltaic system installed on a canopy, the design requires a precise coordination between structural sizing and electrical configuration. It is not just about defining the power of the system, but verifying the compatibility between static loads, environmental stresses, and the arrangement of the modules.

Particular attention must be paid to the weight distribution on the supporting structure and to the correct integration of the fastening systems, in order to guarantee stability, safety, and durability over time.

From an application perspective, this solution allows transforming surfaces already intended for parking or resting areas into functional energy production systems for self-consumption or to power services such as lighting and electric charging, without further land consumption.

What Materials to Choose for the Structure of a Solar Canopy?

The most commonly used materials for constructing the frame of solar panel canopies are primarily steel, or aluminum depending on specific needs, and wood.

Hot-dip galvanized steel is one of the most popular choices. This material is known for its corrosion resistance and rust resistance, which is essential considering exposure to the elements. Structures made of hot-dip galvanized steel often feature profiles shaped like inverted omega that efficiently channel rainwater, preventing accumulations that could compromise the structural integrity and performance of the solar panels.

Wood represents an esthetic alternative, especially in restricted areas, blending well with the surrounding environment. However, wood requires specific treatments to resist the elements and ensure structural stability over time, and thus may have a shorter lifespan compared to steel.

How to Install the Panels on a Canopy: Structural and Plant Aspects?

To install photovoltaic panels on a canopy, it is essential that it possesses certain mechanical, electrical, and structural characteristics.

The supporting structure must be robust and certified: it must be able to withstand static and dynamic loads, including wind, snow, and vibrations.

Generally, the structure of the canopy will consist of a double framework of beams, main and secondary, often in a grid pattern, designed to anchor the panels using clamps, screws, and sealants.

The photovoltaic panels are then mounted directly onto the structural profiles and secured with self-tapping screws, effectively forming the actual cover of the solar panel canopy. The absence of a support sheet between the panels and the structure allows for better airflow around the photovoltaic modules, consequently reducing the risk of overheating and increasing production performance.

Moreover, the configuration of the canopy, whether single-slope or double-slope, primarily depends on the orientation: the ideal orientation to maximize energy production in Italy is south, with an inclination between 25° and 35°.

It is also important to consider the system integration for wiring, inverters, storage, and electrical protections.

What Are the Advantages of Photovoltaic Canopies?

Photovoltaic canopies are a highly beneficial solution, whether installed in residential areas or public spaces. These multifunctional structures offer a range of advantages that go well beyond simple coverage:

• production of clean and renewable energy: thanks to the integration of photovoltaic solar panels in their structure, these canopies capture solar energy and convert it into electricity without producing harmful emissions or greenhouse gases;
• functional shading: they provide effective shading that can be utilized in various ways. For example, they can be installed over car parks, creating shaded areas that protect vehicles from the sun while simultaneously generating energy. Additionally, these canopies can be used to create resting areas, outdoor dining zones, or coverings for pedestrian areas;
• energy production without taking up space: the dual use of space as parking or resting area and an energy source contributes to maximizing the overall efficiency of an area;
• does not require masonry work or significant building interventions: their installation does not require substantial masonry work or building interventions, leading to the benefit of sustainable solar energy without incurring additional costs or complex construction work;
• architectural integration: photovoltaic canopies are designed to integrate harmoniously with the surrounding architecture, contributing not only to the aesthetic aspect of the site but also increasing its overall value;
• resilience and durability: canopies are made with high-quality materials, such as hot-dip galvanized steel, which offers resistance to corrosion and durability over time. This robustness enables them to withstand the elements and the most unfavorable environmental conditions;
• easy maintenance and cleaning: maintaining photovoltaic canopies is simple and mainly requires regular cleaning of the solar panels.

Smart Solar Canopies: Integration of Charging Systems, Lighting, and IoT for Electric Vehicles

In many developing countries, smart city projects and the integration of renewable energies with the 4.0 revolution are underway.

In this context, various studies are being conducted to enhance the efficiency of solar panels and reduce maintenance costs with the help of the Internet of Things in monitoring and optimizing the panels.

IoT can help manage real-time energy consumption, allowing solar energy to be more consistent and adaptable to fluctuations in demand.

This way, with IoT, it is possible to optimize and enhance the supply of solar energy to numerous devices, such as potential sources of lighting or electric charging.

FAQ – Photovoltaic Canopy

What is a photovoltaic canopy?

It is a self-supporting structure designed to create canopies equipped with solar modules integrated into the cover. It serves a dual purpose: protecting vehicles or outdoor areas from the elements and producing electricity utilizing solar radiation.

Where can solar canopies be installed?

They can be installed in public and private parking lots, gardens, bus stops, service stations, and pedestrian areas. In public spaces, they can power lighting, electronic devices, or charging stations.

What factors influence energy production?

The efficiency of the system mainly depends on the orientation and tilt of the slope, as well as the presence of shading. Site analysis and the correct configuration of the system also affect energy yield.

Can a canopy function without connection to the grid?

Yes. It can be designed as a standalone system, not connected to the electrical grid, equipped with batteries for storing the generated energy.

What are the main components of a solar canopy?

The fundamental components include photovoltaic modules, inverters, electrical panel, wiring, anchoring and monitoring systems, optional storage battery, and supporting structure.

What materials are used for the structure?

Structures are generally made of hot-dip galvanized steel, aluminum, or wood. Steel ensures high resistance to weather conditions, while wood offers better aesthetic integration but requires specific treatments.

What advantages does a photovoltaic canopy offer?

It allows for renewable energy production without occupying new space, provides functional shading, integrates architecturally into the context, and requires maintenance primarily related to cleaning the panels.