RETScreen Spreadsheet
Natural Resources Canada
Spreadsheet Files
mime-type/not-avalible
10/20/2021
To edit RS1 file, we strongly recommend installing software that works with RS1 files. Of course, there are probably RS1 Online Editors available, but none of them will be able to provide such a wide range of available options as dedicated software.
Remember, that not all of the mentioned programs will allow you to edit the RS1 file. If you want, you can learn more about the RS1 file extension.
This is the best way. Use any of the programs that support the RS1 file to check if it allows you to edit the file. You will avoid the danger of virus installation if you download the software from the software developer 's website. You can find direct links to the creators' websites on the subpages of each application. Examples of programs cooperating with RS1 files, which make it possible to edit it.
And here is the full list of programs supporting the RS1 file
Most of the file formats are simply text format saved under a different extension - so you can open them e.g. with Windows Notepad However, such manual editing of the RS1 file or any other file may result in damage to the file. When you save the changes, you may no longer open the RS1 file. It is safest to use software that was created to edit files in the RS1 format.
It seems that one of the software on the list must be able to edit the RS1 files. However, if for some reason you did not find this option, you can try using tools prepared by external websites. Below are tools that allow you to edit RS1 online files.
Free Online File Edit Service
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