From fire to the future: How energy has always shaped human progress

Energy has always been a foundational driver of human development. From the controlled use of fire to modern electricity systems and low-carbon technologies, every major stage of progress has depended on how societies produce, distribute, and use energy (1) (2). 

Energy transitions have done more than power machines. They have transformed economic structures, enabled industrial expansion, altered patterns of urbanization, and reshaped geopolitical power (3) (4). The availability, cost, and reliability of energy continue to define the limits of productivity, competitiveness, and resilience (2) (5). 

Today’s shift from fossil fuels toward renewables, electrification, hydrogen, and digital energy systems is not just a technological evolution. It is a structural transformation with long-term consequences for growth, industrial policy, and climate strategy (4) (6). 

The first energies: Foundations of civilization 

Early human societies relied on biomass, muscle power, wind, and water. The control of fire, which likely dates back hundreds of thousands to more than one million years, was a decisive turning point because it improved food safety, digestion, warmth, and social organization (1) (7). 

For millennia, wood, charcoal, crop residues, and dried dung remained the dominant energy sources for heating, cooking, and early industry (1) (2). Charcoal enabled higher-temperature metal working, which supported the development of bronze and iron tools, weapons, and early forms of manufacturing (7). 

Scientific evidence also shows that coal was used systematically much earlier than often assumed, with documented fuel use in ancient China long before the Industrial Revolution (8). These early energy systems were local, labor-intensive, and constrained by land and biomass availability, which limited the scale of economic activity (2) (5). 

Coal and industrialization 

Coal became the defining fuel of the Industrial Revolution because of its high energy density, storability, and scalability (3) (5). From the late 18th century onward, coal-powered steam engines transformed textile production, mining, transport, and manufacturing, dramatically increasing output and productivity (3) (7). 

Coal also became central to iron and steel production, which supported railways, ships, infrastructure, and urban construction (3). By the early 20th century, coal had become the backbone of industrial society and remained dominant in electricity generation, heating, and heavy industry (4). 

This coal-based system enabled rapid economic growth, but it also created persistent environmental costs, including air pollution and carbon lock-in (4) (6). In that sense, coal powered modernity while also laying the foundation for today’s climate challenge (6). 

Oil, gas, and mobility 

The mid-20th century saw a major shift toward oil and natural gas. These fuels gradually displaced coal in many sectors because they were easier to transport, more energy-dense in practice, and better suited to the internal combustion engine (4) (7). 

Oil in particular enabled mass motorization, aviation, containerized trade, and globalized supply chains (3) (4). Transportation today remains one of the largest sources of energy demand and is still overwhelmingly dependent on oil (5). 

Natural gas expanded in electricity generation, heating, and industry because it offered flexibility and lower carbon intensity than coal (6). However, methane leakage and combustion emissions mean that gas still plays a substantial role in climate change, which is why it is increasingly under regulatory and investor scrutiny (6) (9). 

Electrification and nuclear power 

Electrification changed the relationship between primary energy and useful energy services. Instead of directly burning fuel at the point of use, electricity allowed centralized generation and long-distance distribution, improving efficiency, flexibility, and reliability across homes, industry, and services (2) (5). 

Electricity access has expanded substantially in recent decades, and electrification now underpins digital infrastructure, heating, cooling, mobility, and industrial automation (5). This makes electricity the central platform of the modern energy system (4). 

Nuclear energy emerged in the 20th century as a high-density, low-operational-carbon source of electricity (7). While it provides stable baseload generation, its expansion has been limited by high capital costs, waste management concerns, and public acceptance issues (6) (7). 

Renewables and the current transition 

The current energy transition is being driven by climate constraints, technological progress, and falling costs for solar, wind, and storage technologies (4) (6). Unlike earlier transitions, this one is explicitly shaped by decarbonization goals and the need to limit warming well below 2°C (6). 

According to the Intergovernmental Panel on Climate Change (IPCC), deep reductions in global emissions require a rapid decline in fossil-fuel use and a major expansion of low-carbon electricity (6). In many scenarios, electricity becomes the dominant final energy carrier as end uses such as transport and heating are electrified (5) (6). 

This transition is technical, institutional and economic, because it requires grid expansion, storage deployment, market redesign, and new policy frameworks to integrate variable renewables at scale (4) (5). 

Future energy systems 

Hydrogen is emerging as an important energy carrier for hard-to-abate sectors such as steel, chemicals, shipping, and long-duration storage (6) (9). Green hydrogen, produced from renewable electricity through electrolysis, is central to long-term decarbonization strategies (9). 

Energy storage is becoming essential as the share of variable renewables grows. Batteries, pumped hydro, and chemical storage all help balance supply and demand across different time scales, from seconds to seasons (5) (6). 

Digitalization and smart grids are also transforming energy systems by enabling real-time optimization, demand response, and better integration of distributed energy resources (4)(9). These systems improve efficiency, but they also introduce cybersecurity and interoperability challenges (9). 

Advanced nuclear technologies, including small modular reactors and fusion research, may play a role in the longer term, but their commercial and regulatory pathways remain uncertain (7) (9). 

Strategic implications 

For businesses and governments, the energy transition creates several strategic priorities.

• First, resilience matters: portfolios must shift toward low-carbon, electrified, and flexible assets to reduce exposure to policy and market shocks (4) (6). 

• Second, infrastructure decisions on grids, storage, hydrogen, and charging networks will shape competitiveness for decades (5) (9).

• Third, innovation is increasingly systemic, meaning that value creation depends on integrating energy, digital, and industrial ecosystems rather than investing in isolated technologies (4). 

• Finally, the transition must be socially durable. Workforce reskilling, regional adjustment, and affordability are critical if decarbonization is to remain politically viable (6). 

From fire to coal, from oil and gas to electricity, renewables, and emerging technologies, energy transitions have repeatedly transformed human civilization (1) (3) (7). The current transition is distinctive because it combines technological change with climate urgency and system-wide economic restructuring (6) (9). 

For leaders, energy is no longer just an operational input. It is a strategic variable that shapes industrial competitiveness, supply-chain design, and geopolitical influence (4) (6). Understanding this trajectory is essential to navigating the next phase of global growth. 

At NETO Innovation, we support organizations navigating the energy transition by combining strategic insight, policy expertise, and innovation-driven approaches. From European funding programs to low-carbon transformation strategies, we help bridge the gap between ambition and implementation in a rapidly evolving energy landscape. 

References

(1) Wrangham, R. Catching Fire: How Cooking Made Us Human. Basic Books, 2009.

(2) Smil, V.  Energy and Civilization: A History. MIT Press, 2017.

(3) Allen, R. C. The British Industrial Revolution in Global Perspective. Cambridge University Press, 2009.

(4) Fouquet, R. “Heat, Power and Light: Revolutions in Energy Services.” Edward Elgar, 2008.

(5) International Energy Agency (IEA). World Energy Outlook / Energy Technology Perspectives, 2025.

(6) IPCC. Climate Change 2021/2022: Assessment Reports. https://www.ipcc.ch/assessment-report/ar6/

(7) Cardwell, D. S. L. The Fontana History of Technology / historical energy scholarship on fire, steam, and nuclear development.

(8) Qiu et al. “Earliest systematic coal exploitation for fuel extended to ~3600 B.P.” PNAS, 2023.

(9) International Renewable Energy Agency (IRENA) / IEA reports on hydrogen, storage, and grid integration. https://www.iea.org/reports/global-hydrogen-review-2023