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How to get a License to use ATP

ATP is a royalty-free EMTP (The Electromagnetic Transients Program), but not a public domain program. Each potential user of ATP must agree not to disclose any ATP information to unauthorized persons and / or organizations. A non-disclosure agreement (ATP License Form) to this effect must be signed by each user and approved by the user group, before access to ATP information will be granted. 

 You want join us? Membership Application Form find here

  Instruction for preparing the license request form online

    • Click on  License Form link below that is apprpriate for your region
    • Please read the form letter and then click the arrow which says I agree with the terms and conditions of this form letter and would like to apply .
    • Fill Out Form
    • Print PDF and then send  VIA POST ONLY (paper form with original signature)

     Please note:  You will be offered the PDF (for later print) twice,  in Browser  and per e.mail, (only print and send one by conventional mail)
                             At the end you need to sent the signed licence request by conventional mail


 European prospective licensees please fill out the form for European users:

European License Form




Prospective licensees in the Canadian-American area may contact the CanAm users group and fill out the following license form and send it to

United States License form


Student License Form

Please note: Full licensing applications submitted by undergraduate students via Web form will not be approved.

Instead Student License Form should be used. This is to be used to sub-license the students by their supervisor if their organization is licensed.

Please enter in the following form the exact e.mail-address of your faculty member. This faculty member will be askesked for your licence, if he or she is found in our user-directory.

Your regiustered faculty member thant will get an email with request to confirm your student status.


Prospective licensees in the Japanese and East-Asian area may contact the Japanese ATP user group

*** As of recent information the Japanese East-Asian User Group JAUG is closed and not actively emitting licenses ***

Japanese East-Asian License form

 Administrator of the site click here

Those who do not now which users group to choose can use the form of the European users group.


About Us

This site has been established for the users of the royalty-free ATP version of the Electromagnetic Transients Program (EMTP). The ATP license is free for nearly everyone accepting the rules expressed in written form when filling the license form.

The site is maintained by the Europan EMTP-ATP users group. There are other related web-sites:

Our Partners:


ATP Draw  

Japanese ATP User Group

 CAUE - Comité Argentino de Usuarios del EMTP/ATP

User Groups  


User Support

User support is available through two mailing lists:

ATP-EMTP-L for licensed-only-users
EEUG-L for members of the users group

When logging into this Website, you have access to a

moderated Forum



last but not least, use This email address is being protected from spambots. You need JavaScript enabled to view it.

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