Penetration Testing for Energy & Utilities

Renewable energy companies, including wind, solar, battery storage, EV charging, and smart grid operators, face unique cybersecurity challenges as the energy transition accelerates. These organisations operate increasingly connected operational technology (OT) environments that control power generation, grid management, and distributed energy resources across wide geographic areas.

The convergence of IT and OT in renewable energy creates attack surfaces that span SCADA systems, inverter controllers, battery management systems, weather forecasting platforms, energy trading systems, and customer-facing portals. Nation-state actors and cybercriminals increasingly target renewable energy infrastructure as its share of the grid grows and its disruption potential increases.

Penetration testing for renewable energy must address both traditional IT systems and the specialised OT environments that control physical assets. Testing must be carefully coordinated to avoid disrupting energy generation or grid stability. Compliance with NIS 2, IEC 62443, and national energy regulations requires regular security assessment of both IT and OT environments.

Top PickFeatured
Raxis logo

Raxis

Featured partner for Energy & Utilities.

US penetration testing firm founded in 2011, running 600+ engagements a year with a fully remote, US-based team. Manual, expert-led testing across web, network, cloud, mobile, wireless, OT/ICS, and AI/LLM. Gartner Sample Vendor for PTaaS.

OSCP Employer
  • Founded in Atlanta in 2011 by Mark Puckett, formerly head of the global Red Team at Home Depot.
  • Runs over 600 penetration tests a year with a fully remote, US-based team.
  • Every engineer is a senior-level practitioner based in the United States; testing is never offshored.
  • Named a Sample Vendor for PTaaS in Gartner's 2024 Hype Cycle reports for Security Operations and Application Security.
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28 providers
Raxis logo

Raxis

US penetration testing firm founded in 2011, running 600+ engagements a year with a fully remote, US-based team. Manual, expert-led testing across web, network, cloud, mobile, wireless, OT/ICS, and AI/LLM. Gartner Sample Vendor for PTaaS.

Atlanta, Georgia, United StatesMid-Range
Web ApplicationNetworkMobile App+13
OSCP Employer
Verified Jul 2026
CREST CertifiedAdversary Simulation
SECFORCE logo

SECFORCE

Canary Wharf-based adversary simulation and CBEST-aligned penetration testing consultancy, delivering CREST-accredited offensive security to UK financial services and other organisations with the most demanding requirements.

London, United KingdomPremium
Web ApplicationNetworkMobile App+10
CRESTCBESTSTAR+3
Verified Jun 2026
PwC Cyber Security logo

PwC Cyber Security

Global Big Four professional services firm delivering CREST, CHECK, and CBEST-accredited penetration testing and red teaming services from London, serving the UK's largest enterprises and regulated organisations.

London, United KingdomEnterprise
Web ApplicationNetworkIoT+9
CRESTCHECKCBEST+3
Verified Apr 2026
Dionach logo

Dionach

Global enterprise cybersecurity consultancy founded in 1999 in Oxford, holding rare CREST STAR-FS accreditation and delivering penetration testing, red and purple teaming, and PCI QSA services across five international offices.

Oxford, United KingdomPremium
Web ApplicationNetworkRed Teaming+8
CRESTCHECKSTAR+3
Verified Apr 2026
Aristi logo

Aristi

CHECK and CREST-accredited Birmingham-based cyber security consultancy with over 15 years of experience delivering penetration testing, red teaming, and OT security assessments for government and private sector clients.

Birmingham, United KingdomMid-Range
Web ApplicationNetworkMobile App+8
CRESTCHECKISO 27001+3
Verified May 2026
Bridewell logo

Bridewell

Fast-growing CREST and CHECK-accredited UK cybersecurity consultancy with deep expertise in critical national infrastructure sectors.

Bristol, United KingdomMid-Range
Web ApplicationNetworkCloud+7
CRESTCHECKISO 27001+1
Verified Apr 2026
APT Intelligence LeaderTIBER-EU Specialist
Mandiant logo

Mandiant

World-renowned cybersecurity firm now part of Google Cloud, delivering threat intelligence-led penetration testing and red teaming informed by front-line incident response experience.

Reston, Virginia, United StatesEnterprise
Red TeamingPurple TeamingNetwork+6
SOC 2ISO 27001FedRAMP 3PAO
Verified Apr 2026
Salus Cyber logo

Salus Cyber

Award-winning Cheltenham-based cybersecurity consultancy with NCSC CHECK Green Light status and CREST approval, specialising in defence, government, and critical national infrastructure security.

Cheltenham, United KingdomMid-Range
Web ApplicationNetworkCloud+6
CRESTCHECKISO 27001+3
Verified Apr 2026
Global Defence PlayerANSSI-Qualified
Thales Cyber Solutions logo

Thales Cyber Solutions

Cybersecurity division of the Thales Group, with ANSSI, CREST, FedRAMP 3PAO, and NATO-cleared personnel. Defence, government, and critical infrastructure penetration testing worldwide.

Paris, FranceEnterprise
Web ApplicationNetworkCloud+9
CRESTFedRAMP 3PAOISO 27001+1
Verified Apr 2026
Top US ProviderFedRAMP 3PAO
GuidePoint Security logo

GuidePoint Security

US-headquartered cybersecurity consultancy with 800+ employees, serving ~40% of the Fortune 500. FedRAMP 3PAO, PCI QSA, and HITRUST accreditations.

Reston, United StatesEnterprise
Web ApplicationNetworkMobile App+12
FedRAMP 3PAOPCI QSASOC 2+1
Verified Apr 2026
SensePost (Orange Cyberdefense) logo

SensePost (Orange Cyberdefense)

Ethical hacking team within Orange Cyberdefense with a 20+ year track record. Known for building industry-standard security tools and groundbreaking research.

Pretoria, South AfricaMid-Range
Web ApplicationNetworkRed Teaming+3
CRESTISO 27001
Verified Apr 2026
CyberLab logo

CyberLab

Cardiff-based CREST and CHECK-accredited cyber security company delivering penetration testing, red teaming, and OT security assessments as part of the Chess Group.

Cardiff, United KingdomBudget
Web ApplicationNetworkCloud+5
CRESTCHECKNCSC Assured+1
Verified May 2026

Energy & Utilities Pen Testing FAQs

What renewable energy systems need penetration testing?+

Priority systems include SCADA and energy management systems, inverter and battery controllers, smart grid infrastructure, remote monitoring platforms, energy trading systems, and customer portals. Both IT and OT environments should be tested.

Can wind farms and solar installations be safely pen tested?+

Yes, with specialist OT pen testers who understand energy systems. Testing uses passive techniques on live production systems and may use offline replicas for active exploitation testing to avoid disrupting generation.

What regulations apply to renewable energy cybersecurity?+

NIS 2 covers energy as an essential sector in the EU. IEC 62443 provides industrial cybersecurity standards. National energy regulators often have additional requirements for grid-connected systems. NERC CIP applies in North America.