# PPC Rețele Electrice Completes €17M Modernization of Historic Filaret Substation, Expanding Capacity to 200 MVA in Bucharest

> PPC Group’s distribution arm in Romania has finalized the €17 million complete technological overhaul of the landmark Filaret 110/20/10 kV primary substation in central Bucharest, increasing capacity from 160 MVA to 200 MVA with ultra-low loss eco-design transformers.

- **Publish Date:** 2026-09-26
- **Category:** transformers-grid
- **Reading Time:** 4 min
- **Original Source Citation:** [Rețele Electrice Romania (PPC Group) Engineering Division](https://www.retele-electrice.ro/en/press/filaret-substation-modernization-200mva-completion)
- **Tags:** PPC Group, Substation, Power Transformer, Romania, 110 kV, Urban Grid, Eco-Design
- **Canonical URL:** https://voltformer.com/news/ppc-retele-electrice-modernizes-filaret-substation-200mva-bucharest-grid
- **Markdown Source:** https://voltformer.com/news/ppc-retele-electrice-modernizes-filaret-substation-200mva-bucharest-grid.md

## High-Efficiency Eco-Design Power Transformers and Compact GIS

The upgrade replaced legacy oil-filled units with two 40 MVA and two 60 MVA high-efficiency power transformers compliant with EU Ecodesign Tier 2 standards, reducing no-load losses by 22% and noise emissions to under 55 dB(A).

The primary switchyard transitioned from aging open-air bays to compact SF6-reduced gas-insulated switchgear (GIS), shrinking the physical substation footprint by 60% while dramatically lowering arc-flash risk.

## Powering Urban Heat Pumps and High-Power EV Hubs

The additional 40 MVA of firm transformation capacity directly supports Bucharest’s municipal transition from gas heating to district heat pumps and accommodates new ultra-fast 350 kW EV charging plazas along southern transit corridors.

Advanced digital substation automation with IEC 61850 process bus communication enables self-healing network restoration within 45 seconds of a medium-voltage feeder outage.

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