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Energy Sector

The energy sector is undergoing rapid transformation. Renewable generation sites — solar farms, wind parks, battery storage — are being deployed at scale, often in remote locations with limited physical security and heavy reliance on remote monitoring and control. At the same time, traditional generation and distribution infrastructure continues to depend on legacy control systems that were designed long before cybersecurity was a consideration.

This creates a unique set of challenges. Geographically dispersed assets communicate over wide-area networks that are difficult to secure. Inverters, RTUs, and PLCs from multiple vendors speak different industrial protocols, each with its own vulnerabilities. Remote access is essential for operations but opens persistent pathways into critical control systems. And regulatory expectations around IEC 62443 and national critical infrastructure frameworks are steadily increasing.

Why First Watch for Energy​

First Watch provides energy operators with continuous visibility and active protection across their OT environments — from a single substation to a nationwide fleet of renewable generation sites.

Deep protocol awareness is at the core. PLC Guard inspects Modbus, DNP3, IEC 61850, and vendor-specific protocols at the operational level — understanding not just that a connection exists, but what commands are being sent to which registers. This allows operators to distinguish between a routine SCADA poll and an unauthorised write to a critical setpoint.

Remote access governance ensures that vendor maintenance sessions and remote operations are visible, attributed, and controlled. Every connection is logged, every command recorded, and programming operations can be restricted to approved maintenance windows.

Scalable deployment supports energy portfolios of any size. Small sites operate with a single Controller and PLC Guard monitoring a SPAN port. Large operators deploy dedicated Controllers per site with centralised alarm replication — providing a single operational view across the entire fleet.

Compliance evidence is generated continuously. The platform produces time-stamped, attributed records of every event, change, and access — providing the documentation energy operators need for regulatory reporting and audit readiness.

What We Protect​

  • Solar and wind generation sites — inverter control systems, meteorological stations, SCADA communications
  • Battery energy storage systems (BESS) — battery management controllers, charge/discharge logic, grid synchronisation
  • Substations and distribution — protection relays, RTUs, bay controllers, IEC 61850 communications
  • Control centres — SCADA servers, historian databases, engineering workstations
  • Remote access paths — VPN connections, vendor maintenance sessions, cloud-based monitoring platforms

This section contains detailed case studies and deployment examples from the energy sector.