Critical Power Infrastructure
Critical Power Infrastructure | Electrical | Athens
From the bustling tech hubs of Marousi to the vibrant port of Piraeus, HEP keeps Athens humming with uninterrupted power. Our specialists design, install, and maintain mission-critical electrical systems that safeguard data centers, hospitals, transit networks, and commercial towers against outages and surges. Leveraging advanced UPS topologies, redundant switchgear, and real-time monitoring, we engineer resilience into every kilowatt—so lights stay on, servers stay cool, and operations stay profitable even when the grid falters.
Clients choose HEP for deep local knowledge paired with global best practices. Rapid 24/7 response teams, predictive maintenance analytics, and a warehouse stocked with immediate-need spares mean downtime is measured in seconds, not hours. Whether you’re expanding capacity on Syngrou Avenue or retrofitting a neoclassical landmark in Plaka, trust HEP to deliver power you never have to think about—only rely on.
FAQs
What is considered critical power infrastructure and why is it essential for companies operating in Athens?
Critical power infrastructure includes all electrical assets that keep mission-essential operations running when the public grid is unavailable or unstable—typically uninterruptible power supplies (UPS), static transfer switches, standby diesel or natural-gas generators, power distribution units (PDU), switchgear, batteries, monitoring systems, and the associated cabling and controls. In Athens, even short power disturbances can halt data-center servers, hospital equipment, financial trading platforms, or industrial automation lines, leading to lost revenue, safety risks, and regulatory penalties. Robust critical power systems ensure continuous, high-quality electricity, protect sensitive equipment from voltage anomalies, and give organisations the resilience required to meet service-level agreements and national standards.
How reliable is the public electricity grid in Athens, and when should I consider additional backup power?
The Attica region has a modern grid operated by the Hellenic Electricity Distribution Network Operator (HEDNO), but outages still occur because of summer heatwaves, extreme weather, wildfires, or scheduled maintenance. The average System Average Interruption Duration Index (SAIDI) for urban Athens is roughly 40–60 minutes per customer per year, but single events can last several hours in densely populated districts. If your business must maintain 24/7 uptime, comply with ISO 22301 (Business Continuity) or EN 50600 (Data Centres)—or if downtime costs exceed roughly €5,000 per hour—you should implement tiered backup such as UPS + generator. Even organisations with lower criticality often deploy at least a line-interactive UPS to ride through short sags and swells.
What backup power solutions do you design, install, and maintain?
We provide a full portfolio tailored to Athenian sites: • Static and modular double-conversion UPS systems from 1 kVA to 2000 kVA, with lithium-ion or VRLA batteries. • High-efficiency rotary UPS for large campuses. • Diesel, natural-gas, or HVO-ready standby generators from 30 kVA to 3 MVA, including acoustic enclosures compliant with EU Directive 2000/14/EC for urban noise limits. • Automatic Transfer Switches (ATS) and medium-voltage switchgear up to 20 kV for connection to the PPC grid. • DC power plants for telecom and 48 V applications. • SCADA-based monitoring, fuel-polishing, and load-bank testing services. We handle everything from load analysis and harmonic studies to commissioning and 24/7 remote monitoring.
Which local regulations and permits affect the installation of standby generators or large UPS systems in the Athens metropolitan area?
Key requirements include: • Building and Electrical Permit (Άδεια Δόμησης/Ηλεκτρομηχανολογικών Εγκαταστάσεων) from the Municipality of Athens or respective suburb. • Environmental impact declaration per Greek Law 4014/2011 if generator capacity exceeds 500 kVA or is located within 150 m of a protected site. • Compliance with EN 56034 and the Greek Fire Service regulation Πυρ/801/30 for fuel storage and exhaust routing. • Noise emission limits under Presidential Decree 1180/81 (≤70 dB(A) at property boundary during daytime; ≤60 dB(A) at night). • Connection approval from HEDNO when paralleling with the grid. We manage the entire permitting process, provide acoustic and vibration studies, and ensure CE marking and Declaration of Conformity for all equipment.
How often should critical power systems be inspected and serviced to remain reliable and compliant?
Recommended schedule for typical critical sites in Athens: • UPS: Visual inspection monthly; preventive maintenance and full battery impedance testing every 6 months; capacitor and fan replacement every 5–7 years. • Generators: Automatic weekly self-start; monthly 10-minute no-load run; quarterly load-bank test; semi-annual oil, coolant, and filter service; full major service at 250 operating hours or annually, whichever comes first. • Batteries: Thermal scan each quarter; capacity discharge test every 12–24 months per IEEE 450/1188. • Switchgear & ATS: Infrared thermography annually and mechanical interlock check. • Compliance audits: Annual review against EN 62040-3, EN 50600-2-2, and insurance requirements. We offer fixed-price maintenance contracts and 4-hour or 24-hour SLA response across Attica.
Can your team deliver turnkey design-build projects for data centres and other mission-critical facilities in Athens?
Yes. We provide end-to-end EPC (Engineering, Procurement, Construction) services for Tier I–IV data centres, hospitals, and industrial plants. Our Athens-based engineers handle: site selection and geotechnical surveys; load profiling and PUE optimisation; electrical one-line and BIM modelling; seismic anchoring per Eurocode 8; supply of UPS, generators, cooling, and BMS; installation, testing, commissioning, and staff training. We coordinate all subcontractors, obtain municipal permits, and deliver as-built documentation and maintenance manuals. Post-handover, our 24/7 NOC on Kifisias Avenue provides remote monitoring, spare-parts warehousing, and guaranteed on-site intervention across Greece within contractually defined windows.