How to evaluate the estimate of a photovoltaic system?

Requesting a quote for a photovoltaic system is the first step in evaluating the convenience of this energy choice. However, there are a few essential elements to consider to get a clear and complete picture. Let's see together what is needed, how to interpret a quote and how to calculate the real economic return.

What do you need to request a quote

To request an accurate quote, it's important to gather some preliminary information:

1. Annual energy consumption: Take the latest bills and calculate the annual consumption in kWh. This data helps to correctly size the system.
2. Roof type: Indicates if it is a flat roof, pitched roof, or another type. It also specifies the roofing material (roof tiles, sheet metal, etc.) and its exposure to the sun.
3. Available surface: Estimate the usable space for the panels. The more space available, the more power you can install.
4. Geographic area: The location affects the available solar radiation. For example, southern Italy has more intense radiation than the north.
5. Guideline budget: Although not mandatory, having an idea of how much you want to invest can help the supplier to offer you more appropriate solutions.

With this information, the professional will be able to prepare a personalized quote.

Example of a quote

Let's imagine a quote for a 6 kW system, designed for a family with an average consumption of about 5,500 kWh per year, who lives in an area of central Italy.

Description of the plant:

1. Number of panels: 16 photovoltaic modules (375 W each)
2. Inverter: Reliable brand single-phase inverter
3. Structure: Aluminum supports for pitched roof
4. Installation: Included in the price
5. Monitoring system: Included, to verify plant production

Total cost: 12,000 euros (VAT included)

Incentives: With the tax deduction mechanism, the net cost can be reduced to about 7,200 euros, divided into annual tax reimbursement installments for ten years.

Return on investment time: About 6-8 years, depending on production and consumption.

Components of the quote

A well-done quote is clear and detailed. Here are the main voices that should be present:

1. Photovoltaic panels: Specify make, model, power and number. The panels are the heart of the system, so quality is paramount.
2. Inverter: This device transforms the direct current generated by the panels into usable alternating current. Technical specifications and warranty must be highlighted.
3. Supporting structure: The materials used must be resistant and suitable for the type of roof.
4. Manpower: Includes system installation and configuration. Check that any scaffolding costs or other accessories are included.
5. Design and administrative practices: A part of the cost concerns the design and management of practices for connecting to the network and for possible incentives.
6. Guarantees: Make sure that the quote clearly indicates the guarantees offered on the panels, the inverter and the installation.
7. Maintenance service: Some vendors offer periodic maintenance packages. Consider if it's included.

Average cost benchmark

The costs of a photovoltaic system can vary significantly depending on the technical characteristics, the geographical area and the condition of the roof. However, it is possible to identify indicative averages:

1. 3 kW system: between 4,500 and 6,000 euros (VAT included)
2. 6 kW system: between 8,000 and 12,000 euros (VAT included)
3. 10 kW system: between 13,000 and 18,000 euros (VAT included)

These costs can be significantly reduced thanks to tax deductions or local incentives, making the investment more affordable.

Is it convenient? Let's use this tool to see how much it makes

The convenience of a photovoltaic system depends on several factors: cost of the plant, estimated energy production, consumption and price of electricity. To make a precise calculation, you can use the photovoltaic cost simulator available on the GridShare website.

The simulator allows you to:

1. Estimate the plant's annual production based on your geographical location
2. Calculate the annual savings in the bill
3. Estimate the return time of investment

For example, for a 6 kW plant in an area of southern Italy, the annual savings could exceed 1,500 euros, with a return on investment in about 5 years.

The alternative

If the initial investment for a photovoltaic system seems too high to you or if you don't have a suitable space for installation, there is an interesting alternative: investing remotely in solar with GridShare.

This platform allows you to participate in shared solar projects, without having to deal directly with installation and maintenance. With a small investment, you can get a stable income and contribute to the energy transition.

This way, you can enjoy the benefits of solar without facing the costs and complexities of a personal installation. Learn more about how it works by visiting the GridShare site.

In conclusion, evaluating a quote for a photovoltaic system is a fundamental step to understand the real convenience of the investment. With the right tools and a platform like GridShare, you can find the ideal solution for your energy needs.

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