Energy Utility Legacy Modernization Program
An anonymized Larkinized engagement illustrating EA value in energy.
Client Context
A regulated utility replacing SCADA-adjacent legacy and customer systems over ten years. Larkinized engaged with CIO and business sponsors across energy.
Challenge
OT networks isolated but undocumented; AMI rollout depended on fragile integrations.
Approach
Capability-led roadmap; OT/IT boundary standards; phased strangler for CIS.
Architecture Decisions
IEC 62351 patterns; dual operations during migration; zero unplanned OT exposure to corporate LAN.
Outcomes
Reduced outage risk; on-schedule AMI; audit-ready OT asset inventory.
Lessons Learned
OT architecture requires operations trust—co-locate architects with control engineers.
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