Solar panels have become one of the most sought-after energy solutions for businesses, industries, and homeowners looking to reduce electricity costs, improve energy efficiency, and adopt a more sustainable model. However, not all projects are the same, and not all solar panels offer the same performance depending on the type of roof, location, or energy consumption needs.
In this guide we explain what solar panels are, how they work, what types exist and what you should consider when choosing the best photovoltaic installation .
What are solar panels?
Solar panels are devices designed to capture the sun’s radiation and transform it into usable energy. In the photovoltaic field, this energy is converted into electricity thanks to the photoelectric effect of solar cells.
When we talk about solar panels in industrial, commercial or residential installations, we usually refer to photovoltaic solar panels , which allow the generation of electricity for self-consumption or for injection into
How do solar panels work?
Solar panels work by capturing sunlight using photovoltaic cells, usually made of silicon. These cells generate direct current (DC) when they receive solar radiation. An inverter then transforms this DC current into alternating current (AC), which is the type of current that can be used in a conventional electrical installation.
Solar panels work by capturing sunlight using photovoltaic cells, usually made of silicon. These cells generate direct current (DC) when they receive solar radiation. An inverter then transforms this DC current into alternating current (AC), which is the type of current that can be used in a conventional electrical installation.
In short, the process is this:
- The panels capture solar radiation.
Photovoltaic cells generate electricity in direct current.
The inverter converts that energy into alternating current.
The electricity is consumed on the premises or fed into the grid. - Photovoltaic cells generate electricity in direct current.
- The inverter converts that energy into alternating current.
The electricity is consumed on the premises or fed into the grid. - The electricity is consumed on the premises or fed into the grid.
Advantages of installing solar panels
Installing solar panels offers clear benefits at an economic, technical and environmental level:
Savings on the electricity bill
One of the main reasons to install solar panels is to reduce energy costs. By generating your own electricity, you become less dependent on the grid and reduce your exposure to energy price volatility.
Clean and renewable energy
Solar panels allow electricity to be produced without direct CO₂ emissions, which contributes to decarbonization and improves the sustainability of business activity.
Asset revaluation
An industrial building, warehouse, or facility with a photovoltaic system can gain value thanks to its greater energy efficiency and lower operating costs.
Reduced energy dependence
Self-consumption with solar panels improves the company’s energy autonomy and reduces dependence on external suppliers.
Brand image
More and more companies are incorporating renewable energy as part of their ESG strategy, reinforcing their reputation and environmental commitment.
Types of solar panels
Choosing the right type of solar panel is essential to maximizing production and ensuring the profitability of the project.
Monocrystalline solar panels
They are the most efficient on the market and stand out for their excellent performance in small spaces. They are often the preferred option when high energy production per square meter is required.
Advantages:
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- Greater efficiency
- Improved performance under low irradiation conditions
- Better use of available space
Polycrystalline solar panels
They have been widely used for years because they offer a balance between cost and performance, although currently monocrystalline materials tend to prevail in most projects.
Advantages:
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- Competitive cost
- Good overall performance
Thin-layer panels
They are used in specific applications where weight, flexibility, or certain installation conditions are critical. They are not the most common solution for conventional industrial roofing.
How to choose the best solar panels
It’s not just about buying a panel with good technical specifications. To choose correctly, you have to analyze the project as a whole.
1. Power and efficiency
The efficiency of the panel determines how much energy it can generate relative to its surface area. On roofs with limited space, this factor is key.
2. Type of cover
Installing solar panels on a metal roof is not the same as installing them on a flat roof with a TPO or PVC membrane, or on a pitched roof. The mounting system and structure must be adapted to the characteristics of the support.
3. Allowable loads
In industrial settings, one of the most important aspects is structural analysis. It’s necessary to study the installation’s self-weight, live loads, wind loads, and ballast distribution if the system is not perforated.
4. Orientation and tilt
The orientation and tilt of the panels directly influence energy production. Good engineering allows for optimized performance without compromising the safety or viability of the roof.
5. Guarantees and durability
Solar panels should offer long-term product and performance guarantees. It’s also important to assess their resistance to harsh weather conditions.
In industrial settings, one of the most important aspects is structural analysis. It’s necessary to study the installation’s self-weight, live loads, wind loads, and ballast distribution if the system is not perforated.
4. Orientation and tilt
The orientation and tilt of the panels directly influence energy production. Good engineering allows for optimized performance without compromising the safety or viability of the roof.
5. Guarantees and durability
Solar panels should offer long-term product and performance guarantees. It’s also important to assess their resistance to harsh weather conditions.
4. Orientation and tilt
The orientation and tilt of the panels directly influence energy production. Good engineering allows for optimized performance without compromising the safety or viability of the roof.
5. Guarantees and durability
Solar panels should offer long-term product and performance guarantees. It’s also important to assess their resistance to harsh weather conditions.
The orientation and tilt of the panels directly influence energy production. Good engineering allows for optimized performance without compromising the safety or viability of the roof.
5. Guarantees and durability
Solar panels should offer long-term product and performance guarantees. It’s also important to assess their resistance to harsh weather conditions.
Solar panels for industrial roofs
Industrial rooftops represent a great opportunity for the implementation of photovoltaic energy. Their large surface area allows for the development of self-consumption installations with a high impact on energy savings.
However, this type of project requires taking into account several technical aspects:
Industrial rooftops represent a great opportunity for the implementation of photovoltaic energy. Their large surface area allows for the development of self-consumption installations with a high impact on energy savings.
However, this type of project requires taking into account several technical aspects:
- Roof load-bearing capacity
Additional loads due to structure and ballast
Wind resistance
Compatibility with existing waterproofing
Safety during assembly and maintenance
Optimization of module distribution - Additional loads due to structure and ballast
Wind resistance
Compatibility with existing waterproofing
Safety during assembly and maintenance
Optimization of module distribution - Wind resistance
Compatibility with existing waterproofing
Safety during assembly and maintenance
Optimization of module distribution - Compatibility with existing waterproofing
Safety during assembly and maintenance
Optimization of module distribution - Safety during assembly and maintenance
- Optimization of module distribution
In this context, simply selecting good solar panels is not enough. It is essential to have a suitable structure , an optimized design, and a technical study that guarantees safety, durability, and production.
Common mistakes when installing solar panels
When planning a photovoltaic installation, these are some common mistakes to avoid:
Not analyzing the cover correctly
One of the most common mistakes is not studying the existing structure and its load limitations in detail.
Choose based solely on price.
The cheapest panel isn’t always the most cost-effective option. A photovoltaic project should be evaluated based on its performance, durability, ease of installation, and overall cost.
Ignoring the action of the wind
In rooftop installations, especially in industrial buildings, wind loads can completely dictate the design. Discover here how to calculate wind loads.
Failure to optimize the layout of the modules
Poor layout can reduce production, hinder maintenance, or unnecessarily increase workloads.
When is it worth installing solar panels?
In most cases, installing solar panels is cost-effective when there is daytime electricity consumption, adequate available space, and a well-developed technical study. In businesses and industries, where consumption is typically concentrated during daylight hours, photovoltaic self-consumption can offer very attractive returns.
Furthermore, the increase in energy costs in recent years has further boosted interest in these solutions.
The importance of a comprehensive solution
A solar panel project shouldn’t be understood simply as purchasing photovoltaic modules. For the installation to be truly efficient and safe, the following must be addressed together:
- structural engineering and calculation
design of the fastening system
Load minimization. Discover here how to calculate loads.
aerodynamic resistance
cover compatibility
speed of assembly
durability of the set
That comprehensive vision is what makes the difference between a generic installation and a truly optimized solution for industrial environments. - design of the fastening system
- Load minimization.
- aerodynamic resistance
- cover compatibility
speed of assembly
durability of the set
That comprehensive vision is what makes the difference between a generic installation and a truly optimized solution for industrial environments. - speed of assembly
- durability of the set
That comprehensive vision is what makes the difference between a generic installation and a truly optimized solution for industrial environments.
Alusín Solar and guaranteed solar structures
Solar panels are a strategic solution for reducing energy costs, increasing competitiveness, and moving towards a more sustainable model. But to achieve maximum performance, simply choosing a good module isn’t enough: it’s necessary to study the project in depth, analyze the roof, and design an installation tailored to each specific case.
In industrial roofs and large surfaces, the key is to combine high-efficiency solar panels with safe, lightweight and optimized structures , which allow making the most of the available surface without compromising stability or waterproofing.
If you are considering a photovoltaic installation, the first step is not to choose a panel at random, but to have a technical study that guarantees the viability and profitability of the project.
