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.

23 providers
Editor's Top PickTop UK ProviderElite Red TeamCREST CertifiedResearch-DrivenTrusted by Enterprise
SECFORCE logo

SECFORCE

Leading UK offensive security consultancy based in Canary Wharf, delivering CREST-accredited penetration testing and adversary simulation to organisations with the most demanding security requirements.

London, United KingdomContact for pricing
Web ApplicationNetworkMobile App+10
CRESTISO 27001Cyber Essentials
Verified Feb 2026
Best UK ProviderBest for EnterpriseResearch Leaders
NCC Group logo

NCC Group

Global cybersecurity consultancy with CREST, CHECK, and CBEST accreditation, renowned for deep technical research and comprehensive penetration testing services.

Manchester, United KingdomContact for pricing
Web ApplicationNetworkMobile App+13
CRESTCHECKCBEST+5
Verified Feb 2026
Nettitude logo

Nettitude

CREST, CHECK, and CBEST accredited UK consultancy within Lloyd's Register, delivering premium penetration testing for government and critical infrastructure.

London, United KingdomContact for pricing
Web ApplicationNetworkMobile App+10
CRESTCHECKCBEST+1
Verified Feb 2026
Pen Test Partners logo

Pen Test Partners

The UK's largest independent security testing firm, renowned for IoT/OT research, CBEST red teaming, and CHECK/CREST-accredited penetration testing across all sectors.

Buckingham, United KingdomContact for pricing
Web ApplicationNetworkMobile App+11
CRESTCHECKCBEST+4
Verified Feb 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 KingdomContact for pricing
Web ApplicationNetworkIoT+9
CRESTCHECKCBEST+2
Verified Feb 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 KingdomContact for pricing
Web ApplicationNetworkRed Teaming+8
CRESTCHECKSTAR+2
Verified Feb 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 KingdomContact for pricing
Web ApplicationNetworkMobile App+8
CRESTCHECKISO 27001+2
Verified Feb 2026
Bridewell logo

Bridewell

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

Bristol, United KingdomContact for pricing
Web ApplicationNetworkCloud+7
CRESTCHECKISO 27001+0
Verified Feb 2026
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 StatesContact for pricing
Red TeamingPurple TeamingNetwork+6
SOC 2ISO 27001FedRAMP 3PAO
Verified Feb 2026
LRQA logo

LRQA

The only organisation worldwide with a full suite of CREST accreditations. 250+ cybersecurity specialists operating in 55+ countries across pen testing, red teaming, and incident response.

London, United KingdomContact for pricing
Web ApplicationNetworkMobile App+6
CRESTISO 27001CHECK+0
Verified Mar 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 KingdomContact for pricing
Web ApplicationNetworkCloud+6
CRESTCHECKISO 27001+2
Verified Feb 2026
SensePost (Orange Cyberdefense) logo

SensePost (Orange Cyberdefense)

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

Pretoria, South AfricaContact for pricing
Web ApplicationNetworkRed Teaming+3
CRESTISO 27001
Verified Mar 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.