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RET RS1
File conversion

Convert RET to RS1

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Is it possible to convert RET to RS1?
Yes - RET converts to RS1.

db_conversions_from lists ret→rs1 (older RETScreen 1 project format). Downgrade conversion would need to be done inside RETScreen if it supports the older format; this is an unusual and mostly obsolete migration.

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Tested on macOS, Windows & Linux
Last verified Sep 2026

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How to convert RET to RS1

Converting a .RET file to .RS1 lets you open the content in software that prefers the .RS1 format, though some details may change compared with the original. The programs listed below open .RET files and can save or export them to .RS1 (or a closely related format).

A full step-by-step guide for this conversion is on the way; the information above is drawn straight from our database.

Programs that convert RET

RETScreen

About these formats

.RET RETScreen Project File

A RET file is a project file from RETScreen, a free energy analysis tool made by Natural Resources Canada. It stores all inputs, climate data, and calculations for a clean energy or…

Open .RET details →
.RS1 RETScreen Spreadsheet

A .RS1 file is associated with RETScreen Spreadsheet, a spreadsheet file.

Open .RS1 details →