ANRE-certified · execution + design

Electrical Power Increase (Capacity Upgrade) — From 350 Lei

A power increase means raising the approved electrical power at your existing connection when your current installation can no longer cope with your consumption. It is carried out through an application to the operator Retele Electrice Romania (Distributie Energie Electrica Romania), followed by a new ATR (Technical Connection Approval), a contract and any required connection changes. In 2026, labour starts from 350 lei (excluding operator fees), with an indicative duration of 4 to 12 weeks.

From 350 lei · exact quote within 24h

A power increase (capacity upgrade) means raising the approved electrical power at your existing connection, for situations where your current installation can no longer keep up with your consumption. The process is handled through an application to the operator Retele Electrice Romania (Distributie Energie Electrica Romania), followed by a new ATR (Technical Connection Approval), a connection contract and, where necessary, modifications to the connection itself. At SUN WATT, labour starts from 350 lei (excluding the operator's own fees), and the process usually takes between 4 and 12 weeks from application to energisation.

When you need it

You need this service when your actual consumption exceeds the power approved in your contract and problems start to appear: the main breaker trips frequently, the voltage drops when several appliances start at once, or you simply cannot install powerful new equipment. Typical situations include: installing a heat pump or a powerful air-conditioning system; fitting an electric vehicle charging station; running an instant water heater, an induction hob and an electric oven at the same time; extending your home or converting it into a space used for business activity. If the power you need exceeds the usual single-phase threshold (around 11 kW), you will need to switch to a three-phase supply (400V). A few indicative power benchmarks: a 7.4 kW EV charging station (wallbox) can run on single-phase, while the 11 kW or 22 kW versions require a three-phase connection; a residential heat pump typically runs at 4-12 kW, and three-phase is recommended for the higher values in that range; for a solar inverter, the power fed back into the grid must match the power approved in the ATR, and larger systems usually require a three-phase connection.

How it works — step by step

  1. Assessment and Power Calculation. We check your current approved power, your actual consumption and the equipment you want to add, free of charge. Together we determine the new power you need and whether you can stay on single-phase or should move to three-phase.
  2. Power Increase Application + Dossier. We prepare and submit the power increase application to the operator Retele Electrice Romania (Distributie Energie Electrica Romania), together with all the required documents. We take care of all the paperwork for you.
  3. New ATR (Technical Connection Approval). The operator issues a new ATR (Technical Connection Approval), which sets out the technical conditions and the connection tariff for the increased power. The exact price is only known once the ATR has been issued.
  4. Connection Contract and Works. We sign the contract and you pay the tariff set out in the ATR. Where necessary, we carry out the modification of the connection and update the DIU (Utilisation Installation Dossier).
  5. New Meter and Energisation. The operator installs or replaces the meter and the supply is switched on. Your installation now runs at the increased approved power, legally and safely.

Required documents

  • Identity document of the account holder (owner)
  • Proof of ownership / up-to-date land registry extract
  • Supply contract or a recent invoice (to identify the POD / metering point)
  • Site plan and location plan
  • Town planning certificate (if the increase involves an extension or construction work)
  • Power increase application and the requested-power data sheet (prepared by us)

Why bransam.ro

  • ANRE-certified company for both execution and design
  • We take the paperwork off your hands: we file the application and manage the relationship with Retele Electrice Romania (Distributie Energie Electrica Romania)
  • Accurate power calculation so you avoid paying more than you need to
  • Turnkey service: from the dossier and ATR through to energisation
  • Local coverage across Bucharest, Ilfov and Giurgiu, with a quote within 24 hours
  • Transparent pricing: labour from 350 lei, with no surprises

How long it takes

As a guide, obtaining the new ATR (Technical Connection Approval) takes a few weeks, and the works are carried out within a few days once the approvals are in place. In total, from submitting the application to energisation, the process usually takes between 4 and 12 weeks.

Indicative price

ServiceIndicative priceDetails
Power increase from 350 lei creștere putere aprobată

Prices are indicative (labour + usual materials, excluding the Rețele Electrice România operator fees). The final price is set by the Technical Connection Approval (ATR).

FAQ — Power increase

How much does a power increase cost?

At SUN WATT, labour starts from 350 lei (labour plus standard materials, excluding the operator's fees). On top of this comes the connection tariff set by the operator through the new ATR (Technical Connection Approval). The indicative prices shown are for labour and standard materials only; the final price is set after the free assessment and depends on the ATR issued by the operator.

How long does it take to obtain the power increase?

As a guide, the new ATR is obtained within a few weeks. In total, from the application to energisation, the process usually takes between 4 and 12 weeks, depending on the operator and the complexity of the work.

What documents do I need for a power increase?

Typically: an identity document, proof of ownership, a recent invoice, a site and location plan, and, for more extensive works, a town planning certificate. We prepare the application and the data sheet for you.

When do I need to switch from single-phase to three-phase?

If the power you need exceeds the usual single-phase threshold (around 11 kW approved), you will generally need to switch to a three-phase connection (400V).

Can I increase my power without changing the connection?

Sometimes yes, if the new power falls within the limits of your existing connection. If the value exceeds your current capacity, modifications will be required.

Who issues the approval for the power increase?

The distribution operator for the Bucharest, Ilfov and Giurgiu area is Retele Electrice Romania (Distributie Energie Electrica Romania), formerly E-Distributie Muntenia. It issues the new ATR (Technical Connection Approval) and sets the tariff.

What are the legal timeframes for a power increase application?

A power increase broadly follows the same regulated stages as a new connection with Retele Electrice Romania: reviewing the application takes around 10 working days, issuing the new ATR (Technical Connection Approval) takes up to 30 calendar days, and if works are needed on the connection, execution can take up to 90 calendar days. The connection certificate and energisation are usually completed within 3-5 working days once the works are finished. In total, the process usually takes between 4 and 12 weeks, depending on complexity.

Can I apply for a power increase if my connection is disconnected?

Not directly. If your connection has been disconnected (for example due to non-payment or suspension) or removed, supply must first be restored through the electrical reconnection service. Only once the connection is energised again can you submit a power increase application for your new consumption needs.

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