JH James HadleyAuthor

The books and writing of James Hadley

James
Hadley.

Practical books about data centres, electrical engineering, critical infrastructure and the technology that quietly keeps the modern world running.

Explore the books About James

Featured book

Writing from the
real world.

James writes for readers who want to understand how complex systems actually work — clearly, practically and without losing the detail that matters.

Critical Power by James Hadley — official first edition front cover
First edition · Awaiting physical proof approval

Critical
Power

The Complete Guide to Data Centre Electrical Systems, Operations and Careers

A comprehensive guide to the electrical, mechanical and operational systems that keep data centres available through faults, maintenance and unexpected events. Written from practical electrical and critical-facilities experience, it connects equipment theory with the operational thinking required in high-availability environments.

  • HV and LV distribution
  • UPS systems and batteries
  • Standby generation
  • Redundancy and resilience
  • Maintenance and commissioning
  • Operations, incidents and careers
Purchase link coming after proof approval
Paperback · 758 pagesISBN 9798160278124Voltbase Publications

In development

More from
James Hadley.

Alongside specialist technical publishing, James is developing accessible STEM books that explain the hidden infrastructure behind everyday digital life.

What Happens Inside a Data Centre? — official illustrated front coverIllustrated STEM · Younger readers

What Happens Inside a Data Centre?

An illustrated journey into the real buildings, cables, computers, power and cooling systems behind the “cloud”.

Awaiting paperback proof approval Purchase link after release
Accessible technical learning

Inside the Data Centre

A detailed, accessible introduction to data centre buildings, power, cooling, computing, connectivity and the people who operate them. The manuscript and illustrations are being prepared for the print-proof stage.

Preparing for print proof Purchase link after release
Future writing ideas

Explaining connected technology

A wider area of interest for future writing: the real-world networks, electrical systems and infrastructure on which digital services depend. This is a theme rather than an announced book.

Future writing theme

Choose a starting point

Different books.
One connected world.

The titles are written for different readers. Whether you are entering the industry or introducing a child to the technology behind the internet, start with the book that suits your curiosity.

01 / INDUSTRY

For engineers and operators

Critical Power explores data-centre power, resilience, operational control and professional practice in depth.

Explore Critical Power →
02 / YOUNGER READERS

For curious young minds

What Happens Inside a Data Centre? uses an illustrated journey to reveal the buildings and people behind online life.

Explore the illustrated book →
03 / LEARNING

For the next generation

Inside the Data Centre is a forthcoming accessible introduction to how modern digital infrastructure works.

Explore forthcoming titles →

The listed book titles are in pre-publication stages. Purchase links will be provided only when the books are available.

James Hadley Author · Electrical & critical-facilities professional

About the author

Experience first.
Writing second.

James Hadley is an electrical and critical-facilities professional whose background spans commercial and industrial electrical engineering, facilities management, high-voltage systems, fibre communications, technical training and data-centre operations.

The professional experience behind the writing spans hands-on electrical work, shift engineering, technical leadership, authorised-person duties and data-centre management. That practical perspective shapes his writing: explain complex systems clearly, show how they fit together, and keep the focus on what matters in the real world.

Publishing note. James Hadley is a pen name used for the author’s publishing work. Titles under the James Hadley name are published through Voltbase Publications, the publishing imprint of Voltbase Software Ltd.

Understanding critical infrastructure means looking at how systems, decisions and people work together.

From experience to explanation

How the books
come together.

The aim is to make demanding technical subjects understandable without oversimplifying the decisions, systems and safeguards that matter.

01 · Real operations

Systems in context

Power, cooling, controls, networks and facilities management are most useful when understood as connected systems rather than isolated pieces of equipment.

02 · Clear explanations

Accessible depth

Technical detail is explained through purposeful language and practical examples, supporting both industry readers and people discovering the subject for the first time.

03 · Different readers

One technical world

From professional reference books to illustrated introductions for younger readers, each title is written for its audience and learning goals.

Publisher & imprint

Voltbase Publications

Voltbase Publications is the publishing imprint of Voltbase Software Ltd, focused on practical technical books, professional guides and accessible learning material for engineering, electrical and critical-infrastructure audiences.

Voltbase Publications Voltbase Software
Voltbase electrical guides for electricians

Electrical guides for electricians

Downloadable guides, checklists and practical resources from Voltbase Publications are available through the Electrical Guides Etsy shop.

Browse on Etsy

Publishing & enquiries

Keep in touch.

For publishing, media or professional enquiries, contact James through Voltbase Publications. The social icons below are reserved for future author accounts. Until official profiles are established, they are intentionally inactive.

Email the publishing team