Grid Connection & Power Upgrade

A heat pump, an EV charger, air conditioning in every room or an electric instant water heater — an old single-phase connection with a 16 A main fuse can't handle them. We carry out the complete switch to a three-phase supply and the increase of connected power: from the application to HEP-ODS (the Croatian grid operator) through to energisation.

What's included

• Load analysis — calculating the required connected power based on your appliances and planned upgrades (EV, solar, heat pump)
• HEP-ODS procedure — application for the grid connection consent (EES), alignment with the connection conditions and technical communication with the operator
• Metering cabinet (PMO) — new cabinet to HEP-ODS specifications, on the façade or boundary wall, prepared for a smart meter
• Supply cable — new feeder from the metering cabinet to the distribution board, sized for the new power
• Distribution board — adaptation or replacement: main switch, RCD protection, surge protection, phase balancing
• Testing and certificate — measurements and the test report required for connection

Process

1. Site review — inspection of the existing connection, board and documentation
2. Quote and plan — clear quote with a bill of works and a description of the HEP procedure
3. Execution — metering cabinet, cable, distribution board; works aligned with the HEP appointment
4. Connection — certificate, coordination of the meter change and energisation

Who it's for

Owners of houses and apartments moving to a heat pump, EV charger or solar; investors in new builds (new connection); owners of commercial premises and apartment buildings whose existing supply doesn't cover the seasonal load.

This is a planned job with preparation and documentation — we don't do emergency call-outs or individual fuse replacements.