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Dear Haydn, Thank you for your inquiry. If you select multiple load profiles (whether imported by you or built into the program), they are aggregated into a total consumption figure for the simulation. In the hourly simulation, the self-consumption share is calculated for every hour of the year by determining what percentage of consumption can be covered by PV energy. Hourly simulation is the standard. However, when importing load profiles, you can also import data with 1-, 5-, 10-, 15-, or 30-minute intervals and then run the simulation on a minute-by-minute basis to obtain more precise results.

Hallo, vielen Dank für Ihre Anfrage. Wir haben soeben die Hilfe zur Rexplorer API veröffentlicht. Um sich registrieren zu können, müssen Sie eingeloggt sein. (Ein Test innerhalb der Testversion ist nicht möglich.) Die ersten 10 Standorte sind kostenlos. Danach können Sie in den bezahlten Tarif wechseln (dann unbegrenzter Zugriff). Für jede Standort-Anfrage erhalten Sie alle Gebäude in einem Umkreis von 100 m. Die Rexplorer API ist nicht mit der Google Solar API kombinierbar. Auf der Intersolar in München vom 23. bis 25. Juni 2026 werden wir die Planung mit der Rexplorer API live zeigen. Sie finden uns am Stand A4.331.

Im neuen Update gibt es eine Schnittstelle zur Rexplorer API. Außerdem gibt es auf der PV*Sol Premium Website einen Link zu https://pvsol.rexplorer.ee/de/ Ansonsten kann ich nicht viel darüber finden. Automatische Erstellung von 3D Gebäuden klingt interessant, vor allem für 19,90 € im Monat. Gibt es die Möglichkeit das ganze zu testen? Wie kombiniert sich das mit der Google API (3D-Daten)? Gibt es Erfahrungswerte oder Aussagen wie genau die Erstellung ist?

Hello, If I import HH data into PVSol, does it use this when calculating self-consumption with an hourly simulation, or does it add the 2 HHs together and use hourly data? Further to the above, is the formula used to calculate self-consumption % simply 'if consumption is greater than PV output then 100%, if not then = consumption/pv output'? This would essentially assume that PV output and site demand is completely flat for each simulation period. Thanks, Haydn

Hello, Thank you for your inquiry. PV*SOL is generally suitable for retrofit string redesign of existing rooftop PV systems, subject to the following limitations: The 3D visualization allows a maximum of up to 7,500 elevated modules or up to 10,000 roof-mounted modules. You can only simulate the entire system, comprising 13,000 modules, in the 2D planning tool. For 3D planning (including shading analysis), we recommend that you split your overall project into two or three sub-projects. There is also an area limitation. When planning with the Google Solar API or with a map section from another provider, you are limited to a size of 200 m x 200 m. If your overall system is larger, you will need to simulate sub-systems. When carrying out 3D planning, please follow our guidelines on dividing large systems into subsystems so that you can make changes at a later stage or create different retrofitting options. Save different retrofitting versions in separate project files. By selecting ‘File’ --> ‘Project Comparison’, you can compare the simulation results of up to 6 project versions.

Hello everyone, I am currently working on a university project involving an existing large rooftop PV system. The system consists of more than 13,000 PV modules in total, distributed across many strings, existing generator junction boxes (GAK) and inverter units. Due to a requirement from a regulatory authority, several modules in the upper roof rows have to be removed because they extend beyond the roof ridge. As a result, parts of the existing PV generator field must be redesigned to remain compliant while minimizing energy losses. My task is not to design a completely new PV system from scratch. Instead, I have to evaluate and optimize an existing installation after the removal of several hundred modules. The project includes: analysis of the existing PV generator field, development and comparison of different retrofit solutions, redesign of the string layout, reassignment of strings to existing generator junction boxes (GAK), verification of electrical constraints such as string voltage, current, inverter limits and MPPT operating range, evaluation of whether existing cabling can continue to be used, consideration of possible shading effects, adaptation of the existing string monitoring system, and comparison of the technical and economic impacts of different solutions. My question is: Would PV*SOL Premium be a suitable tool for checking and validating such retrofit variants? Or is this type of task usually better done manually, for example by using the existing string plans, module and inverter datasheets, Excel calculations, and separate electrical checks? I am especially interested in how such retrofit projects are normally handled in practice: Do engineers usually model the modified system in software, or do they mainly redesign the strings manually and then verify voltage, current and inverter limits separately? I would be very grateful for any practical experience or recommendations. Thank you very much.

Hello, Thank you for your message. We have forwarded your suggestion to our development team and thank you for bringing this to our attention.

Dear Alberto Perez, Thank you for your inquiry. If you are missing datasets, the best approach is to email hotline@valentin-software.com with the exact model designation or the datasheet. We will then contact the manufacturer and request that the missing products be added. You can create datasets yourself, subject to the following limitations: Data on low-light performance is usually unavailable for PV modules. You can either select the "Standard low-light performance" option or copy the low-light performance data from a similar module. Efficiency curves are usually unavailable for inverters, so you must copy the efficiency curve from a similar inverter. For battery systems, ensure that the lower value is always used when there are differing charge/discharge power ratings for the inverter and the storage unit. Custom datasets can be imported; supported formats are PAN for PV modules and OND for inverters.

NOCT type mathematical model for predicting solar PV cell temperature in floating photovoltaic systems is now available. https://www.linkedin.com/posts/activity-7467494042705088512-5aKj

Good afternoon, I am trying to add new modules, inverters and pannels to my database, but on the mayority of data sheets from products I dont get all the specifications that PV sol asks me of. I add an example image. How would you fill up the data of the following inverter and batteries. https://oss.tcldigitalpower.com/1/file/2026/03/20260325092044182_6fyaq0tx4csr.pdf

Dear Mark, Thank you for your inquiry. Since you cannot enter 8,000 cycles at 70% EOL (DoD), enter 10,000 cycles at 60% EOL (DoD) (and have the remaining values calculated).

Good Day, I want to make sure if my calculations are correct. I added a Dyness PowerBlock Max 16kWh battery to the database. Please just check if my Discharge Cycles are correct below:

Dear Mark, Thank you for your inquiry. Your ridge is not centered. Consequently, the roof pitch is 22 degrees on the south side and 25 (or 27) degrees on the north side. If you have a symmetrical roof, check the box for "centered." If you change the roof pitch, the existing configuration will unfortunately be deleted.

Dear Mark, Thank you for your inquiry. Unfortunately, that is not possible. Your only option is to run the simulation twice—once with and once without the non-essential loads.

Dear Mark, Thank you for sharing the project file. Consumption does not take place only between 12 noon and 4 pm, but between 7 am and 7 pm. On a sunny day in November, a month with high levels of solar radiation, demand can only be met by solar power (including the battery) between 8 am and 6 pm. Electricity must be drawn from the grid for one hour in the morning and one hour in the evening. The battery is charged within an hour (8–9 am) and discharged within an hour (5–6 pm). With a usable capacity of 4.6 kWh, it is far too small to cover evening and morning consumption (before sunrise). The battery capacity would need to be increased approximately tenfold to ensure a high degree of supply security even in June, a month with low solar radiation. Excluding non-essential loads, the small 4.6 kWh battery is, of course, sufficient to cover essential loads. We have sent you the screenshots from the diagram editor by email.

Dear pero159, Thank you for your inquiry. In the inverter configuration window, specify that you want to connect two modules in series each.

Dear Hannah, Thank you for your inquiry. PV*SOL premium files can only be opened in PV*SOL (Standard) if they are purely 2D designs, i.e. if the “Use 3D Design” box has not been ticked on the “System Type, Climate and Grid” page:

I hope you do not mind me joining this discussion, as I am facing a very similar challenge and would greatly appreciate any guidance from those with more experience in this area. I am currently designing a PV system in PV*SOL using the following components: Power optimizer: GNETEK Honeybee1600-HPLC — a dual-input optimizer capable of handling two solar modules per unit Inverter: SAJ CHS2-50K-T6-X All-in-One Hybrid ESS — 50kW, 6 MPPT, three-phase, transformerless My issue is that PV*SOL appears to assign one optimizer per module by default, which does not reflect the actual capability of the Honeybee1600-HPLC. I have reviewed the optimizer database settings but could not find any option to specify that this particular unit supports two modules per optimizer. Could anyone advise whether there is a setting or workaround in PV*SOL that allows the software to correctly recognize a dual-input power optimizer? Any guidance on how to configure this properly would be greatly appreciated. Thank you in advance for your time and assistance.

Hi, why is the Inclination showing 27° when my Roof Pitch/Angle is set 22° My Installation is Flush Mount as per below:

Hello, We would like to purchase a license for PV*SOL Standard. Occasionally, we receive files created with PV*SOL Premium. Is it possible to open PVSOL Premium files in PV*SOL Standard? Thanks in advance. Hannah

Good Day, How do you change the Roof Pitch or Roof Angle without deleting any configurations? And also, why is the inclination not the same as the Roof Pitch when my system is setup for flat roof mounting?

Good Day, How do you indicate in the project setup which loads are Essential and which are Non-Essential Loads? I have created two different Load patterns but do not know where to indicate which one is Essential and which one Non-Essential for the system to use in the calculations.

Thanks, I sent the Project now.

Thanks. Ok I have made it as per below for 90% DOD

Dear Mark, Thank you for your message. We confirm that you have correctly configured the battery system. For LFP batteries, please define the charging strategy as follows: The values within the green box are not relevant in this case (for LFP batteries) and will not be taken into account. However, in the red box, the DOD (Depth of Discharge) is defined in percentage terms. If the system allows for a full 100% DOD, leave this value at 0%; otherwise, enter the difference here (100 – DOD in %)—for example, for a 90% DOD, please enter 10% here. The usable capacity is calculated based on this value.