Bei einer Familie in Wien bot sich ein direkter Nachbarschaftsvergleich an, der eindeutig zeigt, wie wichtig die optimierte Auslegung einer Photovoltaikanlage sein kann.
Die Familie lebt in einer Doppelhaushälfte (im Bild rechts) und möchte eine PV-Anlage installieren. Zusätzlich soll die Frage geklärt werden, ob die bereits vorhandene Solarthermieanlage bleiben soll oder ob es mehr Sinn macht, diese durch PV-Module zu ersetzen. [...]
- Doesn't the installer do the planning anyway?
Many photovoltaic companies offer everything from planning to implementation. However, this means that interests of the installing company, such as time pressure, quick order placement or preferred components, flow into the design. This can lead to the roof's potential not being fully utilised or modules being placed sub-optimally. Since SolarValid acts solely in the interest of our client, our only goal is to make the best possible use of the available opportunities and thus ensure a maximum energy and financial return for the future system operator.
- Do individual PV modules more or less actually make a relevant difference?
Absolutely. Depending on placement, orientation and current energy prices, a single additional module increases the system profit by 800-1500€ over 20 years. In almost all cases, the more modules the better. It has been shown that our analysis allows for the installation of 5-10 additional modules, compared to inaccurate planning.
- What do I get as a result of the PV analysis?
The result of the solar analysis is an evaluation document in which the optimal PV panel layout, a possible component selection including a cost estimate, and the expected energy and financial yield are presented. If there are several options (or example if the replacement of a solar thermal system is on the table) the different possibilities are compared. Before the evaluation is finished, a handover meeting takes place in which all questions will be answered and individual wishes are taken into account.
With this information, you are well prepared for obtaining a quotation and successful implementation of your solar PV system.
- I have a blueprint of my roof. Does it still make sense to capture it with the drone in this case?
Roofs usually differ from their paper plans. Ventilation openings, skylights, satellite systems and other attachments are often not located exactly where they are shown on the plan. Our 3D drone capture ensures that the PV modules actually find their place as planned through a real as-is survey.
- Do I need a plan or dimensions of my roof for the analysis?
No, our offer includes the capture of the entire roof including all obstacles and dimensions.
- Is the yield calculation realistic?
We calculate the yield based on the geographical location as well as on number, inclination, orientation, degradation and shading of the PV modules. This provides a very realistic forecast of the expected yield and helps to work out the optimal layout. We have nothing to gain from glossing over results, as our service is completely independent of the final installation chosen.
- Which PV modules are used for planning?
We usually use modules between 370Wp and 440Wp for planning, depending on what fits best for the dimensions of your roof. Modules in this power range currently have the best price/performance ratio. In principle, it is of course possible to do the calculations with any PV panel type of your choice.
- Can you guarantee that the planned layout of the PV modules can be implemented 1:1 practically?
We guarantee that the positioning of the modules is possible in relation to the dimensions of the roof surfaces. However, for constructional or electrotechnical reasons, it may be necessary to make changes to the original layout during practical installation. The technical planning and implementation is of course still the responsibility of the installing specialist company.