New white paper | Power system resilience

Physical Protection: The Foundation of Electrical Resilience

Critical transformers can suffer irreversible damage within the first milliseconds. Restoring equivalent capacity may take months or years — and a multi-asset crisis can overwhelm spare parts, logistics, response teams and insurance capacity.

40 pages

English

Evidence-led

For utilities, insurers & public authorities

When the first milliseconds can determine the next several years.

Critical transformer resilience, multi-asset risk and recovery.

40-page white paper

Executive, technical and institutional perspectives

System-level resilience

From individual assets to multi-site crises

Evidence-led

Institutional, technical, test and field sources

Four audience pathways

Utilities, insurers, public authorities and industry

Why this matters now

Three shifts are redefining transformer resilience.

The risk is no longer limited to the value of one asset. It is shaped by the speed of physical escalation, the difficulty of replacement and the accumulation of losses across multiple sites.

First milliseconds. Months or years to recover.

An internal fault can escalate physically long before procurement, manufacturing, transportation and commissioning can begin.

The real test begins when several assets fail at once.

Extreme weather, coordinated cyber incidents or cascading failures can place critical spare parts, teams and logistics in direct competition.

Cyber risk can become physical risk.

Loss of control over devices and processes can create abnormal operating conditions, physical damage and widespread service disruption.

What you will learn

A practical framework for moving from asset risk to system resilience.

The report combines physical mechanisms, multi-layered protection, field evidence and executive decision criteria.

Prioritize critical transformers

Identify assets whose loss combines high systemic criticality with low real replaceability.

Address the physical risk window

Understand what happens between internal arc initiation, pressure escalation and potential tank rupture.

Assess multi-asset exposure

Connect MFL/PML, business interruption, loss accumulation and competing recovery resources.

Move from awareness to action

Use a roadmap covering asset mapping, prioritization, engineering reviews, standards and crisis preparedness.

Built for decision-makers

One report. Four perspectives.

Each audience can enter the resilience discussion through the decision it is responsible for.

UTILITY & GRID

Utilities, TSOs, DSOs & infrastructure operators

Prioritize non-substitutable transformers, compatible spare parts and portfolio-level resilience investments.

INSURANCE

Insurers, reinsurers, brokers & risk engineers

Assess MFL/PML, loss accumulation, business interruption and the contribution of physical consequence mitigation.

PUBLIC POLICY

Governments, regulators & public authorities

Examine energy security, economic continuity, multi-site crisis preparedness and resilience investments in critical infrastructure.

INDUSTRY

Industrial operators, data centers, EPCs & OEMs

Protect critical production, digital infrastructure and high-consequence operating environments.

Inside the report

A 40-page framework for resilience decisions.

Preview four of the core visual arguments developed in the white paper.

Time asymmetry

First milliseconds versus months or years.

Cyber can become physical

From loss of control to physical consequences.

The multi-asset domino effect

The real test of system resilience.

Insurance and loss accumulation

Isolated incident versus multi-asset crisis.

Evidence base

Built on complementary layers of evidence.

The report uses the right source for the right message: system context, technical mechanisms, testing, field applications and engineering experience.

IEA

U.S. DOE

IEEE

CIGRE

EDF

CEPEL

Bureau Veritas

The report references these organizations and publications. It does not claim endorsement or approval by them.

System context

Electricity security, large power transformers, grids, climate, AI and supply chains.

Physics of risk

Internal arc, gas generation, pressure, tank rupture and transformer fire safety.

Testing & independent validation

Live arc testing, dynamic pressure measurements and third-party inspection.

Field applications

Urban, offshore, industrial, hydro, generation and public-grid environments.

SERGI engineering experience

Installed systems, operational experience and project-specific engineering.

SERGI engineering experience

Engineering for critical energy infrastructure.

SERGI works alongside utilities, industrial operators, insurers and public authorities when high-consequence risks require project-specific engineering rather than a standard approach.

4,000+

Installed systems

85+

Countries

20+ years

Continuous operation

ISO

9001 | 14001 | 45001

SERGI-validated operational data — presented as installed experience, not as a universal performance guarantee.

'Field engineering | Critical environments'

Download the full report

Get immediate access to the 40-page white paper.

Receive the full report and an executive summary. Select your profile so SERGI can share the most relevant follow-up content.

Download the White Paper

After the download

Continue with the conversation that matches your role.

UTILITY / INDUSTRY

Technical or Project Briefing

Discuss a critical transformer, fleet assessment, retrofit or new project.

INSURANCE

Insurance & Risk Engineering Briefing

Review severity, MFL/PML, accumulation and portfolio-level resilience.

PUBLIC AUTHORITIES

Institutional Resilience Briefing

Explore energy security, economic continuity and critical-infrastructure policy implications.

Protecting Energy Infrastructure. Engineering physical resilience for critical transformers and high-consequence energy environments.

Contac

SERGI Transformer Protector
48–52 avenue des Châtaigniers
95150 Taverny, France
www.sergi-energy.com

© 2026 SERGI Transformer Protector. All rights reserved.