Renewable Energy IT Guide

Wind farms, solar installations, and hydro sites are often in locations with limited connectivity. Reliable communication is essential for monitoring and control.

Connectivity Options:

• Fibre: Ideal if available, but expensive to install remotely
• 4G/5G: Good bandwidth, but coverage varies
• Satellite: Starlink now offers 100Mbps+ in rural areas
• Point-to-Point Wireless: Connect nearby sites without cables

Redundancy is Critical:

A single connection failure shouldn't blind you to site operations:

• Primary: Best available broadband or fibre
• Secondary: 4G/5G with automatic failover
• Tertiary: Low-bandwidth satellite for critical alerts

Bandwidth Requirements:

• SCADA data: Low bandwidth, but latency-sensitive
• Video monitoring: 2-5 Mbps per camera
• Remote access: 5-10 Mbps per concurrent user
• Firmware updates: Occasional high bandwidth needs

SCADA (Supervisory Control and Data Acquisition) systems are the nervous system of your renewable assets. They're also increasingly targeted by attackers.

The Threat Landscape:

• Nation-state actors targeting energy infrastructure
• Ransomware groups seeing energy as high-value targets
• Insider threats from contractors with access
• Legacy systems with known vulnerabilities

Security Architecture:

• DMZ: Create a demilitarised zone between IT and OT networks
• Firewall Rules: Explicit allow-lists, not blocklists
• Jump Servers: All OT access through controlled gateways
• Monitoring: Detect anomalous commands and traffic

Vendor Access:

Turbine manufacturers need remote access for maintenance:

• Time-limited access windows (not 24/7)
• Multi-factor authentication required
• Session recording for audit
• Segregated access to specific assets only

Patching Strategy:

OT systems can't be patched like IT systems:

• Test patches in lab environment first
• Schedule updates during low-generation periods
• Have rollback plans ready
• Document compensating controls for unpatchable systems

Real-time monitoring maximises generation and minimises downtime. But the data volumes can be overwhelming.

Data Collection:

• Turbine data: Power output, wind speed, pitch angle, temperatures
• Solar data: Irradiance, panel output, inverter status
• Grid data: Frequency, voltage, reactive power
• Environmental: Weather stations, wildlife monitoring

Architecture Options:

• Edge Computing: Process data locally, send summaries
• Cloud Platforms: Azure IoT, AWS IoT, or specialist platforms
• Hybrid: Local storage with cloud analytics

Key Metrics to Track:

• Availability: Percentage of time generating when conditions allow
• Performance Ratio: Actual output vs theoretical maximum
• Mean Time Between Failures (MTBF)
• Mean Time To Repair (MTTR)

Alerting Strategy:

Not every alert needs immediate response:

• Critical: Generation stopped, security breach - immediate page
• High: Component degradation - next business day
• Medium: Efficiency drop - weekly review
• Low: Informational - monthly reporting

As your portfolio grows, IT complexity increases. What worked for 3 sites doesn't scale to 30.

Centralised vs Distributed:

• Control Room: Centralised monitoring of all sites
• Local Presence: On-site hardware for autonomy during WAN outages
• Hybrid: Central oversight with local failover

Standardisation:

• Common hardware platforms across sites
• Unified monitoring and management tools
• Documented build procedures
• Spare equipment pre-configured

Network Architecture:

• SD-WAN for intelligent traffic routing
• Centralised security policies
• Consistent addressing schemes
• Automated configuration management

Acquisition Integration:

When acquiring operational assets:

• Security audit before network connection
• Migrate to standard platforms where possible
• Document legacy systems and their dependencies
• Plan for eventual replacement