This glossary defines technical and regulatory terms used throughout the ResitaData website and in the NDA data room. Each term is defined in the context of the RES1 project, with references to the applicable regulatory authority or technical standard. For the definitive regulatory text, refer to the source documents linked throughout this site.
The formal Technical Grid Connection Study required under Romanian law (ANRE Order 59/2013) for any new large consumer connecting to the high-voltage grid. The ATR determines the legally binding connectable power capacity for a specific consumer at a specific grid node. Duration: typically 6–12 months for HV consumers. Filed with Transelectrica (for 400/220 kV connections) and E-Distribuție Banat (for distribution elements).
Romania's national energy regulatory authority. ANRE issues the orders and regulations governing grid connection (Order 59/2013), electricity market operation, and licensed operator obligations.
Projects designated by the European Union under the TEN-E Regulation (EU 2022/869) as critical for cross-border energy infrastructure. EU PCI status provides: priority permitting in Member States; access to EU financial instruments (CEF — Connecting Europe Facility); streamlined cross-border regulatory coordination. The Reșița corridor carries 4 EU PCI designations under ENTSO-E TYNDP 2024, Project 144.
ENTSO-E's TYNDP is the biennial plan for pan-European electricity grid investment. Project 144 in the TYNDP 2024 covers the Reșița corridor, including the LEA 400 kV Reșița–Pančevo interconnection and associated grid upgrades.
Unit of apparent power for electrical equipment. In data center site selection, MVA refers to transformer capacity at a substation — the maximum rated power that can flow through the transformer. 650 MVA is the installed transformer capacity at the Reșița substation, comprising a 400/220 kV unit (400 MVA) and a 400/110 kV unit (250 MVA).
Romanian Zonal Urban Plan. A planning document that formalises permitted uses within a defined zone, including building heights, setbacks, use categories, and infrastructure requirements. The PUZ for the RES1 project zone is currently under elaboration, with a target of Q3 2026. The PUZ formalises data center use within the existing industrial zone without changing the underlying industrial classification.
A Local Council Decision — the formal decision instrument of the Reșița Local Council (Consiliul Local Reșița) required to approve a public tender for municipal land. Under Romanian administrative law, land in municipal private domain can only be sold or conceded via a public tender (licitație publică) initiated by an HCL vote requiring a qualified majority of Local Council members.
Romania's National Association of Authorised Valuers. An ANEVAR-certified independent valuation sets the minimum price for the public tender for municipal land. No municipal land tender can commence below the ANEVAR valuation minimum.
The full scope of authority transferred to a data center development partner at RES1. The development partner controls all aspects of site design, construction contracting, equipment procurement, and operational management. RDI retains advisory involvement for municipality-facing decisions only.
Mandatory environmental review required in Romania before Building Permit issuance for data center projects above regulatory thresholds. Conducted by the development partner post-land allocation, reviewed by the Ministry of Environment. The RES1 site has no apparent Natura 2000 overlay based on public record review.
Romania's national electricity transmission system operator (TSO), state-controlled. Owns and operates the 400/220 kV high-voltage transmission network. Responsible for conducting ATR studies for HV consumers. The Reșița 400/220/110 kV substation (650 MVA) is a Transelectrica-owned asset, upgraded in 2024–2025.
The licensed distribution network operator (DNO) for Caraș-Severin county and the Banat region. Subsidiary of Enel Romania (now Electrica). Responsible for medium-voltage (MV) distribution infrastructure in the project zone. Involved in the ATR process for distribution-level connection elements.
Romanian designation for a 400 kilovolt overhead power line. The three 400 kV corridors at the Reșița node are: LEA 400 kV Porțile de Fier–Anina–Reșița (117 km, operational April 2024); LEA 400 kV Reșița–Pančevo double-circuit (131 km, operational January 2025); LEA 400 kV Reșița–Timișoara (under construction, expected 2027–2028).
ASHRAE TC 9.9 publishes the 'Thermal Guidelines for Data Processing Environments,' the reference standard for data center cooling design. The 2023 edition specifies 30–80 m³/h of makeup water for evaporative cooling per 100 MW of IT load at PUE 1.2–1.3. Used in this site's cooling margin calculation for the Bârzava river.
Romania's National Institute of Hydrology and Water Management. The INHGA gauges river flows at monitoring stations across Romania. The Bârzava river flow of 3.63 m³/s (mean annual) is based on INHGA data from the Reșița monitoring station.
Romania's National Administration 'Romanian Waters' — the authority responsible for issuing water use permits under Legea 107/1996 (Water Law). Any data center using water from the Bârzava river for cooling requires an Apele Române permit specifying abstraction volume, return flow, and ecological minimum flow compliance.
Romanian subsidiary of Public Power Corporation (PPC SA), Greece's largest listed energy company (balance sheet >€5 billion). In December 2025, PPC Romania acquired 9.9 ha of land adjacent to the RES1 site for a 100 MW gas-fired peaker plant on the same Transelectrica 400 kV substation. This acquisition serves as independent third-party institutional validation of the RES1 grid infrastructure thesis.
A separate legal entity created for a specific investment or development project. In the context of RES1, the development partnership is typically structured as a Romanian SPV (limited liability company, SRL) in which the development partner holds majority equity and Resita Data Infrastructure SRL holds minority equity.
Data center efficiency metric: total facility power divided by IT equipment power. A PUE of 1.0 is theoretically perfect (all power goes to IT equipment). The RES1 site's water cooling access and climate advantage are designed to support a data center PUE of 1.15–1.25 for well-designed water-cooled facilities.
The power system security standard requiring that the grid remains stable and consumers remain powered even if any single grid component (line, transformer, generator) fails. The three 400 kV corridors at the Reșița node provide N-1 security for the data center consumer — if one corridor fails, two remain operational. The under-construction Timișoara corridor will add N-1-N-1 redundancy.
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