Neterra Telecommunications: Stolnik Data Center

SDC Stolnik (also known as SDC Stolnik Data Center) is located within the Data Center Park Stolnik, Elin Pelin Municipality—approximately a 20-minute drive from Sofia Airport in Bulgaria. It is part of Neterra’s SDC (Sofia Data Center) network of facilities and is positioned adjacent to one of the largest electrical substations in Southeastern Europe, giving it robust access to power infrastructure. Strategically, this facility supports the growing demand for colocation, cloud, and telecom services in Southeast Europe. Its carrier-neutral model, high connectivity, and ability to scale power make it a competitive node in Bulgaria’s IT landscape. 

⚙️ Facility Highlights

• Total building area: 6,000 m² 
• Installed power: 2 × 1 MW (total 2 MW) 
• Future scalability: possibility to expand up to 150 MW 
• Connectivity capacity: 100G redundant connectivity 
• Redundancy & resilience:
•  • UPS: N+1 redundancy 
•  • Diesel generator: N*+1 / 2N depending on configuration
•  • Generator full-load fuel autonomy: 72 hours 
• Cooling / environment:
•  • Air conditioning with redundant systems, maintaining ~25 °C ± tolerance, 50 % relative humidity guaranteed 
• Floor load capacity: quoted in some sources as 2,000 kg/m² for heavy-duty / crypto halls 
• Specialized halls: dedicated areas for crypto mining colocation with tailored cooling & power configurations
• Remote access: supports remote “Hands-on-site” capabilities (KVM-over-IP, remote console) for customer operations without physical travel 

🔐 Security & Compliance

• Certifications: ISO 9001, ISO 20000, ISO 27001, and PCI DSS are publicly stated for the facility. 
• Physical security: 24/7 manned security and surveillance, Video monitoring, and controlled access systems (access control, authentication) 
• Fire & detection systems: automatic fire detection, fire suppression systems, water detection in critical zones 
• Access control: strong procedures governing entry to colocation halls, with escorted access and audit logs
• Compliance commitments: as a certified PCI DSS facility, it supports clients with strict data handling/security requirements 

🌐 Connectivity & Carrier Access

• Carrier-neutral policy: customers may choose from multiple network providers with equal access terms 
• Diverse fiber entry points and redundant network paths (for resilience) 
• High-capacity backbone: “100 G redundant connectivity” cited as part of its network capabilities 
• Cross-connects, private cage, rack-level interconnect, and cross-connect services offered
• Integration with Neterra’s broader telecom / global network infrastructure for international reach 

💼 Who It Serves

• Enterprises in Bulgaria and Southeast Europe requiring resilient, certified colocation 
• Fintech, e-commerce, payment service providers needing PCI DSS compliance and security standards 
• Telecom operators, ISPs, and network providers seeking a neutral interconnection hub in Bulgaria 
• Crypto and blockchain companies leveraging the dedicated crypto halls and high-load power capabilities 
• Global companies needing presence in the Balkan region, low-latency connectivity to Eastern Europe and neighboring markets