NexaTrade combines practical project experience with independent research and technical publications focused on renewable energy, energy storage, hydrogen systems, electrification and energy infrastructure development.
Publications by Joakim Berg explore energy systems, investment structures, electrification and the future energy economy.
All publications are available or planned for publication in both English and Swedish.
Published Publications

The Energy Handbook
🟢 Published
Practical guide to energy efficiency, solar power, battery storage and long-term energy planning.
ISBN: 9798241451132
The Energy Systems & Investment Series
A multi-volume publication series exploring energy systems, energy storage, investment structures, electrification, industrial transformation and the future energy economy.
The series follows the journey from physical energy systems, through capital and investment decisions, to industrial electrification, societal transformation, governance and energy security in the electric age.
Available in Paperback and Kindle eBook formats.
🟢 Books 1–3 published • Books 4–5 in development • Future volumes planned

Book 1 – Energy Systems in Practice
From Technology to Investable Energy Systems
🟢 Published
An introduction to modern energy systems, energy storage, grid interaction and investment-driven project development. Designed for engineers, investors, consultants and decision-makers navigating the energy transition.
ISBN: 9798180944351

Book 2 – The Capital Energy System
Markets, Grids and Power in the Global Transition
🟢 Published
An introduction to modern energy systems, energy storage, grid interaction and investment-driven project development. Designed for engineers, investors, consultants and decision-makers navigating the energy transition.
ISBN: 9798182000819

Book 3 – The Power Structure of the Electrified Society
Energy, Industry, and Geopolitics in the Electric Age
🟢 Published
Explores how electrification is reshaping industry, regional competitiveness, investment flows and geopolitical influence. The book examines why some regions become winners in the electric age while others struggle to adapt.
🟢 Published
ISBN: 9798183700008

Book 4 – The Architecture of the Electric Society
🟡 Under Development
As societies become increasingly dependent on electricity, energy systems evolve into critical societal infrastructure. This book explores how electrified societies are governed, regulated and organized, and how resilience, institutions and infrastructure shape the future of the electric economy.

Book 5 – Energy Security in the Electric Age
🟡 Planned
Energy security is no longer only about fuel supply. In the electric age, resilience depends on grids, storage, digital infrastructure, cybersecurity and strategic planning. This book examines how modern societies can protect and strengthen critical energy systems in an increasingly complex world.
NexaTrade
Finnish energy and engineering company focused on renewable energy, hydrogen systems, BESS and international infrastructure projects.
Services
Hydrogen Systems
Battery Energy Storage
Engineering & EPC
Renewable Infrastructure
Energy Consulting
Contact
info@nexatrade.io
© 2026 NexaTrade Oy Ltd. Privacy Policy | Terms & Conditions