IT, networks, and cybersecurity for energy and utilities
Critical infrastructure monitored, segmented IT/OT networks, and planned recovery.
In energy, water, and sanitation, IT and control systems underpin essential services distributed across many sites, some remote. Overwan manages the infrastructure with SOC/NOC monitoring, separates IT and OT networks with network security, connects remote facilities with SD-WAN and private 5G, and maintains tested recovery plans.
Who we serve
- Renewable energy producers
- Energy distribution and retail
- Water and sanitation
- Waste management
- Fuels and gas
IT challenges in the sector
Essential services
A failure can affect supply to customers and populations. Continuous monitoring and round-the-clock incident response are indispensable.
IT/OT convergence
SCADA and remote control systems connected to the corporate network open new avenues for attacks. Segmentation and access control are essential.
Remote facilities
Wind and solar farms, treatment plants, and reservoirs need reliable connections in isolated locations, with remote management.
Legacy control systems
PLCs and remote control systems that have been running for many years cannot be updated like a workstation and require compensating measures.
Targeted threats
Energy and water infrastructures are targeted by attacks with criminal and geopolitical motivations, requiring coordinated detection and response.
Regulatory obligations
Incident notification, risk management, and management accountability require organized processes and evidence.
How we help
- 24x7x365 Technical Support: Assistance, monthly/quarterly contracts and hour packages. Auditable metrics and our own tooling.
- Infrastructure Management: We operate servers, networks, virtualization, backup and disaster recovery with modern automation and observability.
- Backup & Disaster Recovery: 3-2-1 strategies with Veeam, Nakivo and cloud replication. Periodic, audited recovery tests.
- IT Outsourcing: We run your IT Department's functions in outsourcing — full or partial replacement.
- SOC/NOC as a Service: 24/7/365 operations with managed SIEM, SOAR, and EDR/XDR. Integrated NOC and SOC, documented runbooks, and single SLA.
- Network Security & Zero Trust: NGFW, NAC, Zero Trust segmentation, IDS/IPS and content filtering. Physical access control with card and biometrics, CCTV and fire detection.
- SD-WAN & LAN Networks: Design and operation of SD-WAN, LAN, and campus networks. Automation, IP/DNS/DHCP management, and teams certified by major manufacturers.
- Private 5G Networks: Standalone private 5G networks for factories, ports, and hospitals. Network slicing, ultra-low latency, and contractual SLA.
- Observability & AIOps: End-to-end Observability and AIOps: correlated metrics, logs, and traces, anomaly detection, and automated 24/7 remediation.
- Datacenter & Edge: High-performance datacenters and edge nodes: raised floor, cooling, fire detection and suppression, UPS, generators, and access control.
Regulation & compliance
NIS2 / Legal Cybersecurity Regime
Energy (electricity, gas, oil, hydrogen, and district heating and cooling networks), drinking water, and wastewater are highly critical sectors under the NIS2 Directive, and waste management is among the other critical sectors. Many entities in these sectors may fall under the Legal Cybersecurity Regime (Decree-Law No. 125/2025); the framework should be assessed according to activity and size.
Electricity cybersecurity network code
Delegated Regulation (EU) 2024/1366, in force since June 13, 2024, establishes specific cybersecurity rules for cross-border electricity flows, applicable to electricity sector entities identified as high-impact or critical.
IEC 62443
The IEC 62443 series of standards is a reference for the cybersecurity of industrial automation and control systems, including concepts such as zones, conduits, and security levels.
Why Overwan
- Since 2011: Managing IT for companies in Portugal for over a decade.
- 24x7x365 support: Nights, weekends and holidays, with continuous monitoring.
- Certifications: Certified team and processes.
- Technology partners: Partnerships with leading IT vendors.
Frequently asked questions
How do you protect the OT network without stopping operations?
We start by mapping the equipment and flows, and we segment the OT network from the corporate network in phases, during agreed maintenance windows, without touching the control systems while they are running.
Do you connect facilities in isolated locations?
Yes. We use the connections available at each location (fiber, radio, 4G/5G or satellite), with redundancy when the facility requires it and centralized management.
Is my company covered by NIS2?
It depends on the activity and size. Many entities in these sectors are covered. We help with the technical framework and implementing security measures; the legal assessment should be confirmed with your advisor.
Do you provide support outside office hours?
Yes. 24x7x365 support covers nights, weekends, and holidays, with continuous monitoring and defined escalation for incidents affecting operations.