Solar PV site survey: the essential check to avoid unpleasant surprises

Installing a solar PV system does not simply mean choosing solar panels and mounting them on the roof. Before getting to the actual installation work, there is a crucial step that helps determine whether the building is really suitable, which solutions are possible and which technical aspects need careful attention: the solar PV site survey.

The site survey is the moment when an initial idea for the system is compared with the actual conditions of the property. The technician checks the roof, reviews the available spaces, analyses the electrical panel, assesses the cable route and considers the possible presence of an inverter, storage battery or wallbox for charging an electric car.

In other words, it is a technical visit that helps avoid surprises. And, let’s be honest, when it comes to work on your home or business premises, having fewer unknowns is always good news.

What a solar PV site survey is before installing solar panels

A solar PV site survey is a technical check of the property carried out before the final confirmation of the project or the installation of the system. It is used to collect real data on the roof, electrical system, technical spaces and general condition of the building.

During this phase, the technician does not simply “take a quick look”. They observe, measure, take photos, assess and note all the elements that may influence the design of the solar PV system.

Definition of a technical site survey for a solar PV system

A technical site survey for a solar PV system is an on-site visit aimed at checking whether the installation is feasible. It may concern a detached house, a villa, a condominium, a business, a warehouse or a commercial property.

The goal is to answer very practical questions: is the roof suitable? Is there enough space for the panels? Where can the inverter be installed? Is the electrical panel compatible? Is the cable route simple, or does it require specific solutions?

Without this information, every proposal risks remaining too generic.

Difference between a technical visit, an initial consultation and a preliminary solar PV quote

The initial consultation usually helps understand the customer’s needs: consumption, goals, indicative budget and interest in any additional components, such as a battery or wallbox.

The preliminary quote can be prepared based on information provided remotely: electricity bills, photos, the property address and satellite images.

The technical site survey, on the other hand, looks in detail at the real conditions of the building. This is where the aspects that may be missed remotely are checked: shading, access points, roof condition, meter location, space inside the electrical panel and actual wiring possibilities.

Difference between an on-site survey, a remote assessment and satellite roof analysis

A remote assessment can be very useful for an initial analysis. Satellite images help observe the shape of the roof, the orientation of the roof sections and the presence of visible obstacles. Photos sent by the customer can add valuable details.

However, a remote assessment has its limits. It does not always show the condition of the roof covering, roof accessibility, the actual presence of shade or the state of the electrical system with precision.

An on-site survey, instead, makes it possible to check everything directly on the property. It is a bit like moving from a map to a real visit: the map certainly helps, but once you are on site, you see things that were previously hidden.

Why the property check comes before designing the solar system

The design of a solar PV system should be based on reliable data. If precise information is missing, there is a risk of sizing the system incorrectly, choosing an unsuitable position for the components or underestimating technical difficulties.

The property check exists precisely for this reason: to build a solid foundation for the project. First, real data is collected; then the most suitable technical solution is defined.

What a solar PV site survey is for in homes, businesses and condominiums

A solar PV site survey turns an initial hypothesis into a concrete assessment. Whether it is a private home, a business or a condominium, the technical visit helps understand what can be installed, where it can be installed and which precautions may be needed.

Checking the technical feasibility of a rooftop solar PV system

The first question is simple: can the system be installed?

To answer it, the technician checks the available surface, roof orientation, inclination, presence of obstacles and condition of the roof covering. Not all roofs are the same: some are large and regular, while others have several roof sections, chimneys, skylights or shaded areas.

Technical feasibility is not only about the roof. It also includes the electrical panel, the meter, the spaces for the inverter and battery, the cable route and the accessibility of the site.

Confirming or correcting data collected from photos, bills and satellite maps

Before the site survey, preliminary information is often collected. Electricity bills show consumption, maps show the shape of the roof and photos help understand the general situation.

The site survey is used to confirm this data or, if necessary, correct it. For example, it may turn out that a roof section looked free but is actually partly occupied by a chimney. Or that the electrical panel is farther from the roof than expected.

Better to find out before work begins.

Identifying issues with the roof, electrical panel and cable route

A good site survey helps identify technical issues in advance. Some are easy to manage, while others may require additional assessments.

Among the most common situations are ageing roofs, electrical panels that need upgrading, complex cable routes, limited space for the inverter or difficult access to the roof.

The point is not to see problems everywhere, but to know what to expect. With an accurate check, any obstacles become elements to manage in the project, not unpleasant surprises.

Making the sizing of the solar panels more accurate

The sizing of a system does not depend only on consumption. It also depends on the available space, solar exposure, shading and roof configuration.

During the site survey, useful information is collected to understand how many panels can be installed and what power can realistically be achieved.

A well-sized system is not necessarily the largest possible one, but the one best suited to the property’s consumption and characteristics.

Reducing the risk of project changes before the installation work

When the site survey is carried out properly, the project starts with fewer unknowns. This reduces the risk of having to change the solution at a later stage.

For example, it may be discovered in advance that the inverter needs to be placed in a different room than expected, that an alternative cable route is required or that the battery needs a more suitable space.

These are details that matter. And they often make the difference between a straightforward installation and a more complex job than expected.

When the solar PV site survey takes place in the installation process

The site survey can take place at different points in the process. There is no single rule that applies to every case, because much depends on the complexity of the property and the working method used.

Site survey before the final quote for the solar PV system

In many cases, the site survey is carried out before the final quote. First, technical data is collected on site; then a more accurate proposal is prepared.

This approach is useful when the building has aspects that need careful assessment: complex roofs, limited technical spaces, dated electrical systems or the possible presence of constraints.

Site survey after an initial online estimate for solar panels

In other cases, the process starts with an initial online estimate. The customer provides electricity bills, photos and the property address; based on this information, a preliminary proposal is prepared.

The site survey comes later, to check whether the initial hypothesis is correct. If everything matches, the solution is confirmed. If differences emerge, the proposal is updated.

Technical check before the detailed design phase

The site survey can also be the step that comes before the detailed design phase. At this stage, the information needed to define the layout, components, connections and positioning of the main elements is collected.

It is an important moment because it allows the project to move from a general proposal to a more defined technical solution.

On-site visit in case of changes to the initial solution

Sometimes the site survey is also useful when an initial solution has already been considered, but something changes. For example, the customer decides to add a battery, a wallbox or a heat pump.

In these cases, the technical visit helps check whether the electrical system and available spaces are still suitable for the new configuration.

When a solar PV site survey is particularly important

A site survey is generally useful, but in some cases it becomes especially important. The more complex the property, the more the technical check helps avoid mistakes.

Complex roofs, multi-section roofs and irregular surfaces

A simple, large and well-exposed roof is easier to assess. A roof with several sections, changes in height, dormers, skylights or irregular surfaces requires more attention.

In these cases, the site survey helps understand which areas are truly usable and how to arrange the panels without compromising performance, safety and accessibility.

Older buildings, delicate roofs or roofs to be checked before installing panels

If the building is older, the roof needs to be observed with particular care. Fragile tiles, displaced roof tiles, leaks or deteriorated roof coverings may require work before installation.

Installing panels on a roof that needs maintenance may not be convenient. It is better to fix any issues first and then proceed with the system.

Shading from trees, chimneys, antennas or nearby buildings

Shade can affect the system’s production. During the site survey, the technician assesses the presence of trees, chimneys, antennas, parapets or nearby buildings that may cast shade on the panels.

Not all shade has the same impact. What matters is when it occurs, how long it lasts and which parts of the roof it affects.

Solar PV system with a storage battery

If a storage battery is planned, the site survey must check the available space, compatibility with the inverter, distance from the electrical panel and environmental conditions.

The battery should not be placed randomly. It must be located in a suitable, accessible and protected place that is consistent with the technical requirements of the system.

Solar PV with a wallbox, heat pump or other major electrical loads

Electric cars, wallboxes, heat pumps and induction hobs can increase electricity consumption. It is important to mention them straight away, even if they will be installed in the future.

The site survey allows these loads to be considered in the technical assessment, so the system is not designed only around current consumption but also around foreseeable future needs.

Solar PV systems for businesses, warehouses and commercial activities

For business systems, the technical assessment can be more detailed. Surfaces are often larger, consumption is higher and electrical systems are more complex.

The site survey must consider industrial roofs, electrical panels, access points, technical rooms, daytime loads and possible structural or authorisation checks.

Solar panels in a condominium or on a shared roof

In a condominium, aspects linked to shared spaces also come into play. The site survey helps check the condominium roof, access points, the utilities to be served and any practical constraints.

In these cases, it may be useful to involve the building manager or someone who knows the property well.

Properties with landscape, urban planning or condominium constraints

If the property is located in a historic centre, a protected area or a context with specific aesthetic rules, the site survey may reveal the need for further checks.

A constraint does not always prevent installation, but it may influence the position, inclination, visibility or type of solution.

What the technician checks during a solar PV site survey

The central part of the site survey concerns technical checks. The technician observes the property as a whole: roof, electrical system, indoor spaces, access points and possible issues.

Available surface for solar PV modules and solar panels

The available surface does not always match the total roof surface. Some areas may be occupied by chimneys, skylights or antennas. Others may be less suitable due to exposure, shade or shape.

The technician assesses the space that can actually be used for the solar PV modules.

Orientation of the roof sections and installation area

Roof orientation affects system production. A well-exposed roof section can provide better performance, but east-west solutions can also be valid, especially if they distribute production throughout the day.

The choice depends on the property and its consumption patterns.

Roof inclination and panel mounting angle

Inclination also matters. A pitched roof already has a certain angle, while on a flat roof support structures can be used to orient the panels.

The site survey helps understand which configuration is technically possible.

Shading during the day and at different times of the year

Shadows change throughout the day and across the seasons. A shadow that seems marginal at one moment may become more relevant at another time of year.

For this reason, the technician assesses not only the situation visible during the visit, but also possible variations.

Condition of the roof before system installation

The condition of the roof is essential. If the roof is in poor condition, it may be advisable to intervene before installing the panels.

The site survey makes it possible to identify visible signs of fragility, wear or issues that need further investigation.

Roof accessibility for installation, safety and material handling

Installing a system requires safe access to the roof and adequate space to move materials and equipment.

The technician assesses whether ladders, scaffolding, platforms or other solutions are needed to work safely.

Location of the electrical panel and connection point

The electrical panel is one of the most important points of the check. Its position, available space and general condition influence the connections and any necessary upgrades.

Condition of the existing electrical system and possible upgrades

An old or poorly organised electrical system may require additional checks. The site survey helps understand whether the conditions are suitable for correctly connecting the solar PV system.

Meter location and available power

The meter and available power are elements to consider, especially if a battery, wallbox or other major electrical loads are expected in addition to the solar PV system.

Possible cable route between roof, inverter and electrical panel

The cables need to connect the panels, inverter and electrical panel. The route may be simple, or it may require indoor or outdoor passages, trunking or existing shafts.

Assessing this in advance helps avoid improvisation.

Available space for the solar inverter

The inverter must be installed in a suitable, protected and accessible position. During the site survey, garages, cellars, technical rooms or sheltered outdoor areas are assessed.

Available space for a storage battery

If a battery is planned, adequate space is needed. It is not enough for it to “fit”: ventilation, accessibility, protection and compatibility with the rest of the system must be considered.

Installation point for an electric vehicle wallbox

When a wallbox is present or planned, the technician assesses where to install it, how far it is from the electrical panel and how to integrate it with the solar PV system.

Safety conditions for the future solar PV worksite

The site survey also makes it possible to observe the operating conditions of the future worksite: access points, height, spaces, obstacles and possible risks.

Possible technical, aesthetic or authorisation constraints

Finally, the technician may identify elements that require further checks: landscape constraints, condominium rules, aesthetic limitations or specific property conditions.

Roof check for the installation of the solar PV system

The roof is the key element of the solar PV site survey. It is where the panels will be installed, so it must be analysed carefully.

Useful roof dimensions for solar panels

The technician assesses the dimensions of the roof and identifies the areas that can actually be used. The focus is not only on the total size, but also on the position of obstacles and the shape of the roof sections.

Roof areas not suitable for modules, brackets and mounting structures

Some parts of the roof may not be suitable for installation. There may be areas that are too small, difficult to reach or occupied by technical elements.

Identifying these areas helps define a realistic layout.

Presence of chimneys, antennas, skylights, dormers and parapets

Chimneys, antennas, skylights and dormers reduce the available space and can create shade. Parapets, especially on flat roofs, can influence the arrangement of the panels.

Type of roof covering: tiles, curved tiles, sheet metal, membrane or flat roof

The type of roof covering affects the mounting system. Tiles, curved tiles, sheet metal, membrane roofs and flat roofs require different solutions.

The site survey helps identify which system is best suited to the specific case.

Condition of the roof covering

A roof in good condition provides a safer base for installation. If signs of wear or fragility emerge, it may be necessary to intervene first.

Possible weak points, leaks or work to be done before installation

The site survey may reveal leaks, broken tiles or parts that need fixing. In these cases, it is better to intervene before mounting the panels.

Once the system has been installed, carrying out work on the roof can become more complex.

Access points to reach the roof safely

The technician checks how the roof can be reached. Access may be via an internal staircase, hatch, terrace, courtyard or external equipment.

Operator safety is a practical but decisive aspect.

Analysis of solar exposure and expected production

A solar PV system works thanks to sunlight. For this reason, exposure, inclination and shading are essential elements.

Ideal panel orientation and alternatives on east-west roof sections

The best orientation depends on the context, but the ideal roof is not always available. An east-west configuration can also be interesting because it allows production to be distributed more evenly between morning and afternoon.

During the site survey, the most sensible orientation for the property is assessed.

Impact of roof inclination on system performance

Panel inclination affects the amount of energy produced. On pitched roofs, the existing slope is often followed, while on flat roofs angled structures can be used.

Shade from trees, buildings, chimneys, antennas and parapets

Even small shadows can have an impact, especially if they fall on the panels during the most productive hours.

The technician assesses the position of obstacles and their possible effect on the system layout.

Seasonal shading and changes in solar radiation throughout the year

The height of the sun changes throughout the year. A shadow that is not very important in summer can become more relevant in winter.

For this reason, the analysis should not be limited to what is visible at the exact moment of the visit.

How exposure, shade and inclination influence the panel layout

The panel layout is the result of a balance between available space, expected performance, shade and physical constraints. The site survey helps define an arrangement that is consistent with the real conditions of the roof.

Check of the existing electrical system

Solar PV is not just panels on the roof. It also involves electrical connections, protection devices, an inverter and integration with the existing system.

Check of the main electrical panel

The electrical panel is checked to understand whether there is space for any additional devices and whether the configuration is compatible with the solar PV system.

Check of the meter and contracted power

The meter indicates the contracted power and other useful data. This information becomes even more important if a wallbox, heat pump or other loads are expected.

Assessment of available power for solar PV, battery and wallbox

The site survey makes it possible to assess whether the available power is consistent with the customer’s goals. It is not only about producing energy, but also about managing consumption correctly.

Check of space for electrical protection and safety devices

Every system must be connected safely. The technician checks whether there is space in the panel for the necessary protection devices or whether alternative solutions are needed.

Identification of any electrical system upgrades

Sometimes it may be necessary to upgrade parts of the electrical system. The site survey helps identify these needs before the operational phase.

Distance between roof, inverter, electrical panel and meter

Distances influence wiring, trunking and the complexity of the installation. The clearer the route, the easier it is to design an orderly solution.

Check of technical spaces for inverter, storage and electrical components

Inverter, battery and other components must be placed in suitable spaces. Finding a free corner is not enough: the location must make technical sense.

Where to install the solar inverter

The inverter can be installed in a garage, cellar, technical room or protected outdoor area. It must be accessible and suitable for the required operating conditions.

Where to install the storage battery

The battery requires a safe and protected space. The technician assesses position, dimensions, distance from the panel and environmental conditions.

Ventilation and protection requirements for components

Electrical components must be protected from unsuitable conditions, such as excessive heat, humidity or direct exposure to the elements.

Indoor spaces, garage, cellar, technical room or protected outdoor area

Every property has different spaces. The visit helps identify the most suitable one, balancing technical needs, practicality and aesthetics.

Future accessibility for maintenance, checks and assistance

A component installed in an inconvenient location can make future checks more complicated. It is better to think about this straight away: easy access makes every future intervention simpler.

Aesthetic impact of inverter, battery, trunking and wiring

Looks matter too. During the site survey, it is possible to assess how to reduce the visual impact of the inverter, battery, cables and trunking.

Assessment of cable routing and electrical connections

The cable route is one of the most practical aspects of the site survey. It is often underestimated, but it can significantly affect the quality of the installation.

Cable route from the roof to the inverter

The technician identifies the most suitable route for connecting the panels to the inverter. This may involve an external route, an internal route or existing technical spaces.

Cable route from the inverter to the electrical panel

From the inverter, the cables must reach the electrical panel. Here too, distance, accessibility and a clean route matter.

Indoor and outdoor routes, trunking or existing shafts

Where possible, existing shafts or routes can be used. In other cases, external trunking or dedicated solutions are needed.

Critical points along the wiring route

Thick walls, long distances, difficult passages or inaccessible environments can make wiring more complex.

Solutions to reduce the visual impact of cables and trunking

A good site survey also considers the final visual result. Cables and trunking can be positioned neatly, avoiding improvised solutions.

Solar PV site survey and storage battery

A storage battery allows part of the energy produced to be used later. If one is planned, it should already be considered during the site survey.

When to assess storage during the technical visit

The battery should be assessed when evening consumption is significant or when the customer wants to increase self-consumption. It is useful to discuss it even if installation will take place later.

Space needed to install the battery

The technician checks where the battery can be placed and whether the space is sufficient. Dimensions vary depending on the model and capacity.

Compatibility between battery, inverter and electrical system

Not all systems are the same. The site survey helps consider compatibility, connections and possible predispositions.

Environmental conditions suitable for the storage system

The battery must be placed in a suitable, protected and accessible environment. Humidity, excessive heat or direct exposure may be aspects to avoid.

Possibility of preparing for a battery at a later stage

In some cases, the system can be prepared so that a battery can be added in the future. Assessing this during the site survey can simplify any later work.

Solar PV site survey and wallbox for electric cars

If you own an electric car or are thinking of buying one, it is worth saying so straight away. The wallbox can influence sizing, wiring and load management.

Why it is important to mention an electric car straight away

An electric car increases consumption. Even if the purchase is planned for the coming months, it is useful to mention it during the visit.

This allows the technician to assess a solution that is more consistent with future needs.

Where a home wallbox can be installed

The position of the wallbox depends on the parking space, the distance from the electrical panel and the possibility of routing the cables neatly.

Distance between wallbox, electrical panel and parking space

The farther the charging point is from the panel, the more complex the connection may become. The site survey is used to assess this distance.

Check of available power for charging

Car charging requires power. The technician checks whether the available power is adequate or whether load management solutions should be considered.

Integration between solar PV, storage and electric car charging

When solar PV, storage and wallbox work together, the system can become more efficient and appealing. The site survey is the right time to understand how to integrate them.

What information to prepare before a solar PV site survey

Preparing properly for the site survey makes the visit more useful. Everything does not need to be perfect, but some information helps a lot.

Recent electricity bills and consumption data

Electricity bills help understand real consumption. Having at least a few recent bills available, preferably from different times of the year, helps assess energy needs.

Annual consumption in kWh for the home or business

Annual consumption in kWh is one of the most important data points for sizing the system. If available, it allows for a more accurate assessment.

Contracted power of the meter

The contracted power indicates how much energy can be drawn at the same time. It is a useful figure, especially if new loads are expected.

Consumption habits during the day

Knowing when energy is consumed helps understand the potential for self-consumption. A household that consumes a lot in the evening will have different needs from a business that is mainly active during the day.

Expected new consumption: electric car, heat pump or induction hob

Future consumption matters. An electric car, heat pump, induction hob or air conditioning can change the overall energy requirement.

Floor plans, technical drawings or property documents

They are not always essential, but they can be very useful, especially for complex buildings, businesses or condominiums.

Photos of the roof, meter and electrical panel

Photos are also useful before the visit. They can speed up the assessment and anticipate some checks.

Information on constraints, recent work, leaks or known issues

If the roof has had leaks, if there are constraints or if recent work has been carried out, it is better to say so immediately. The technician can take this into account.

How a solar PV site survey works step by step

Every site survey can be different, but it generally follows a few recurring phases.

Initial collection of information on consumption, property and goals

The visit often starts with a few questions: what is the consumption? Are new appliances planned? Do you want to add a battery? Is there an electric car?

This information helps guide the technical check.

External check of the building and access points

The technician observes the building from the outside and assesses access points, available spaces and possible obstacles.

Check of the roof or panel installation area

The roof covering is analysed to understand space, exposure, inclination, shade and general condition.

Check of indoor spaces and technical rooms

Garages, cellars, technical rooms or other spaces where the inverter and battery could be installed are checked.

Analysis of the electrical panel, meter and connections

The technician checks the panel, meter, available space and possible cable routes.

Collection of photos, measurements and technical notes

During the visit, photos, measurements and notes may be collected. This data is used for the subsequent analysis.

Initial indications on feasibility, issues and next steps

At the end of the site survey, the technician may provide initial indications. Not all answers are always immediate, because some data may need to be analysed carefully afterwards.

How long a solar PV site survey takes

The duration depends on the complexity of the property. A simple home takes less time than a warehouse or condominium.

Average duration for a private home

For a private home, a site survey may take approximately 30 minutes to 2 hours. The duration varies depending on roof accessibility, the position of the electrical panel and the presence of a battery or wallbox.

Average duration for businesses, warehouses and condominiums

For businesses, warehouses and condominiums, more time may be needed. The surfaces are larger, electrical systems are more complex and access points may be more difficult.

Factors that can make the technical visit longer

The site survey may take longer in the case of roofs that are difficult to access, many roof sections, complex electrical panels, constraints to be checked, limited technical spaces or the need to assess several solutions.

Why a very quick check may be insufficient

A visit that is too quick risks missing important details. Of course, there is no need to drag things out unnecessarily, but an accurate site survey requires enough time to observe the key points.

Remote solar PV site survey

Technology helps a lot. Today, an initial assessment can also be carried out remotely, but it is not always enough.

What can be assessed with photos, satellite maps and bills

Remotely, it is possible to assess the shape of the roof, orientation, consumption, presence of visible obstacles and some general characteristics of the property.

When a remote assessment may be enough for a first estimate

A first remote estimate can be useful when the roof is simple, the photos are clear and there are no obvious issues.

Limits of satellite images, photos and preliminary data

Satellite images do not show everything. They do not always allow the condition of the roof covering, the state of the electrical panel or cable routes to be assessed.

When an on-site visit is recommended

An on-site visit is recommended when the property is complex, the roof is old, shade is present, a battery or wallbox is planned, or there are technical doubts.

Difference between remote pre-analysis and a complete technical site survey

Remote pre-analysis helps create an initial picture. A complete technical site survey verifies the situation on site. They are two different but complementary phases.

Problems that may emerge during the site survey

The site survey is not only used to confirm that everything is fine. It is also used to find out what needs to be assessed more carefully.

Not enough space for the desired number of panels

Sometimes the roof does not offer enough space to install the number of panels initially considered. In this case, the system power can be reviewed or a different layout can be assessed.

Shading not visible in the initial assessment

A shadow caused by a chimney or nearby building may not appear clearly on a map. During the visit, however, it may become evident.

Roof to be repaired before solar PV installation

If the roof covering is deteriorated, it may be advisable to repair it first. This is an important assessment to avoid more complex work later.

Electrical panel requiring upgrades

The panel may not have enough space or may need updates. The site survey helps identify this in advance.

Cable route more complex than expected

In some buildings, connecting the roof, inverter and electrical panel requires a particular route. It is better to define it in advance.

Lack of a suitable space for inverter or battery

The first space considered is not always the right one. The technician may suggest more suitable alternatives.

Difficult access to the roof or worksite

Narrow courtyards, high roofs or complicated access points may require specific equipment.

Urban planning, landscape or condominium constraints

Some constraints may require checks or authorisations. The site survey helps identify them and avoid underestimating them.

What happens after the solar PV site survey

After the visit, the data collected is analysed. This is where the technical assessment takes shape.

Analysis of the data collected during the technical visit

Photos, measurements, notes and information on consumption are reviewed to define a coherent solution.

Confirmation or revision of system feasibility

The site survey may confirm the initial hypothesis or reveal the need for changes.

Definition of installable power

Based on the available space and roof conditions, the installable power is assessed realistically.

Choice of the position of panels, inverter and battery

The position of the components is defined by considering technical needs, safety, accessibility and aesthetics.

Possible update of the technical proposal

If differences emerge compared with the initial estimate, the technical proposal may be updated.

Possible request for additional structural or authorisation checks

In some cases, further checks may be needed, for example on the structure, constraints or electrical system.

Transition to the design of the solar PV system

Once the data has been collected and analysed, the actual design phase can begin.

Difference between site survey, quote and solar PV design

These three moments are connected, but they are not the same thing.

The site survey collects real data on the property

The site survey is used to observe the building and collect technical information.

The quote translates the technical solution into costs

The quote indicates costs, components and included services. It may be preliminary or updated after the site survey.

The design defines layout, components and electrical diagram

The design establishes how the system will be built, where the panels will be placed and how the components will be connected.

Why an initial estimate may change after the technical visit

An initial estimate is based on preliminary data. The site survey may confirm everything or reveal new elements.

Why site survey and design are not the same thing

The site survey collects the information. The design uses it to build the technical solution.

Free or paid solar PV site survey

The site survey may be free or paid, depending on the type of service and the level of detail required.

When the site survey may be free

It may be free when it is part of the assessment process offered by the company or when it is used to check initial feasibility.

When the site survey may be paid

It may be paid when it requires an in-depth technical analysis, a detailed report or checks on complex properties.

What an in-depth technical visit may include

An in-depth visit may include measurements, photos, roof assessment, electrical analysis, checks of technical spaces and indications on critical issues.

What to ask before booking the appointment

Before the appointment, it is worth asking whether the site survey is free, what it includes, who carries it out and whether a technical summary will be provided.

Difference between a free visit and a detailed technical report

A free visit may be used to check general feasibility. A detailed technical report may require more time and a higher level of analysis.

The solar PV site survey is a decisive step in moving from a simple idea for a system to a concrete, safe and well-designed solution. It makes it possible to check the roof, solar exposure, electrical panel, technical spaces, inverter, battery, wallbox and cable route.

Preparing properly for the visit, providing correct data and asking the right questions helps obtain a more accurate assessment. After all, a good solar PV system is born even before installation: it starts with a careful analysis of the property and the needs of the people who will use it.

The next step is to request a technical assessment of the property, in order to understand which solutions are truly suitable for your home, business or condominium.