The Online Cable Optimizer

What is Cableizer?

Cableizer is a software package for the design of power cable systems using electrical, mechanical, thermal and environmental calculations.

Cableizer is completely web-based because we believe SaaS is the future: It is cost effective, accessible anywhere, easily customisable, has improved interoperability, offers easier installation and maintenance, and offers tighter security than desktop applications.

  • We started in June 2015 and are developing heavily.
  • We offer monthly subscriptions for a fair price.
  • We are a small team working in the cable business for years.


  • Software guided design of cables up to 500 kV!
  • Cable calculations including mass, heat of combustion, CO2, price, etc.
  • System calculations of current rating and cable pulling
  • Environmental calculations incl. magnetic fields and soil temperature rise
  • Web-based without any installation or dongle but with automatic updates
  • Work together directly with customers and suppliers using share links
  • Support from engineers with many years of practical experience

Check out all the features.

Latest News

Discontinuation of GridCableMax (2020-11-30)
The operation of the online cable rating software GridCableMax will discontinue soon. After careful consideration, the GridCableMax team recommended its users to switch to Cableizer. We are glad to offer all existing GridCableMax users a substantial discount on their first subscription and to welcome them to our platform.

Updated credit card payments (2020-09-08)
By updating our credit card payments to Stripe Checkout, we increase your safety and comply with new regulatory requirements. At the same time, for your convenience, we have added the following currencies: New Zealand dollar as well as Swedish, Norwegian, and Danish crowns.

Buried projects with backfills (2020-08-25)
Based on two example arrangements it is described how buried systems in backfills are modelled and simulated in Cableizer. Some uncertainties of this new analytical method for buried systems are also discussed. Compared to the previous method and the IEC method (however, it is unclear if the IEC method is at all as generally applicable as the proposed method which allows for different backfills and multiple differently loaded cable systems and heat sources), this new analytical method changes how the number of loaded objects in the backfill is interpreted and how the calculation of the temperature rise of a system due to other sources is calculated. If you previously have been simulating multiple systems in backfills (which probably did not even converge), we strongly advise you to simulate them again.

Font selection in report (2020-07-04)
Today's major update brings the server, the database, and all programs to the cutting edge, eliminating several minor errors and incorporating many improvements, the most visible being the choice of font in the report.

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