Using Equipment Check
Equipment Check is a comparison tool on the results page. It does not recalculate the scenario and it does not change the stored result. It simply compares real hardware values that you enter against the requirements of the saved result you are already viewing.
Start by understanding the result first
Equipment Check only makes sense after you have reviewed the result itself. Confirm the correct version, read the main result tabs, and make sure you understand what the scenario is asking for before you start comparing candidate hardware.
The app labels this area as Optional comparison only. That is a useful reminder. The calculator result remains the reference point. Equipment Check is there to help you test real hardware against that reference.
Open the Equipment Check tab
On the results page, open the Equipment Check tab. If the page is in a restricted view, or if you are looking at an archived result, this tab may not be available in the same way as a normal live results page.
When the tab opens, you will see a form split into three sections: Battery, Inverter & Charging, and Solar Panels & Controller.
Enter the hardware you want to compare
In the battery section, the current app lets you enter: Selected battery unit voltage (V), Selected battery unit Ah, Selected battery unit kWh, and Selected battery quantity.
In the inverter and charging section, you can enter: Selected inverter continuous power (W), Selected inverter surge power (W), Selected charger current (A), and Selected MPPT charge current (A).
In the solar and controller section, you can enter: Selected panel wattage (W), Selected panel quantity, Selected panel Vmp (V), Selected panel Voc (V), and Selected MPPT PV input power (W).
You do not need to treat this like an all-or-nothing form. The most useful check is the one that matches the hardware you are seriously considering. If you only want to test an inverter and charger, focus on those fields. If you are comparing a fuller system package, enter the wider set.
Run the comparison
Once the values are in place, click Run Equipment Check. The app then compares your selected hardware values against the saved result requirements for the version you are viewing.
This comparison is separate from the main calculator. It does not update the scenario, create a new version, or replace any stored result data.
Read the summary first
After the check runs, the page shows a summary with an overall status and a set of counts. These counts are grouped into Suitable, Borderline, Undersized, and Oversized.
Use this summary as a quick screen. It tells you whether the candidate hardware looks broadly aligned with the result or whether several parts of the selection need closer attention.
Then read the detailed comparison sections
Below the summary, the app breaks the comparison into sections and field-level checks. Each check shows the field label, the status, the selected value you entered, the reference value from the stored result, and a short message explaining the outcome.
This is the part to read slowly. A single undersized item may matter more than several suitable ones if it affects a critical part of the system. A borderline result may still be workable, but it usually means the surrounding scenario context deserves another look before you rely on it.
What Equipment Check is best used for
Equipment Check is most useful as a narrowing tool. It helps you spot obvious mismatches, screen candidate options more quickly, and understand whether a real equipment choice lines up with the saved scenario result.
It is not the same as final compatibility validation. Manufacturer limits, installation details, and real field constraints still need proper review before any real-world decision is treated as settled.