From 1 January 2026, the Common Regulations 2026 apply, bringing together the grid companies' requirements for connection to the grid: notification before work starts, power factor, phase imbalance, short-circuit level at the connection point and drawing of the metering section. Here are the most important requirements and what they mean for installations.
Introduction
The Common Regulations 2026 are the grid companies' joint regulations for connecting installations and appliances to the grid. They apply from 1 January 2026 and replace the Common Regulations 2022. The grid company may have supplementary provisions for its own supply area (section 1). (Source: elnet.dk/faellesregulativet-2026)
Notification before work starts
Notification to the grid company must be made before the installation work starts. Among other things, the following must always be notified: new connections (including temporary installations and construction sites), changes to the service cable, service fuse or agreed supply capacity, power factor correction, generation plants and electrical energy storage systems, heat pumps and charging points (when the connection requires authorisation), decommissioning of installations and broken seals. If part of what was notified is not carried out, or more is to be installed, a new notification must be made. (Common Regulations 2026, section 2)
Power factor
For generation plants the requirements are stricter. Installations with many inductive loads (motors, transformers) and installations with frequency converters may need reactive power compensation to stay within the limit.
Phase imbalance
Example: with an agreed supply capacity of 63 A, 20 % is only 12.6 A, so the limit is the 16 A that is always allowed. At 250 A the limit is 50 A, and at 2,000 A 20 % would be 400 A, but the cap is 300 A. The requirement is relevant for three-phase installations with unevenly distributed single-phase loads — e.g. single-phase charging points or heat pumps on the same phase. Distribute single-phase loads evenly across all three phases.
Members only
The rest of the article is locked
Create a free user account to unlock all articles, calculators, templates and range — and get access to quizzes and classes. It takes less than a minute: name, email and a password. No payment card.
Want to try something first? See what you can use without an account — the junior zone, the encyclopedia, the videos and more.