CONL file format description

Many people share .conl files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .conl file can be edited, converted or printed with. On this page, we try to provide assistance for handling .conl files.

1 filename extension(s) found in our database.

.conl - PJM CONL Data

The CONL data files are related to PJM. The CONL file is a PJM CONL Data. PJM Interconnection LLC (PJM) is a regional transmission organization (RTO) in the United States.

Data files
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PJM CONL Data related extensions:

Naturally, other applications may also use the .conl file extension. Even harmful programs can create .conl files. Be especially cautious with .conl files coming from an unknown source!

Can't open a .conl file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .conl file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

col, con, conp, onl

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

BI/Query Connection File
PATCHMASTER Online Analysis Information
ROSE Online NPC Dialogs Data
Acharya Consonant Data
KJT-200 Constituent Data
OASIS Montaj Control File

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

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If you have useful information about the .conl file format, then write to us! >> CONL file