The Great Conversion

Electricity is not found in nature like a coal seam or an oilfield. It must be generated. More precisely, other forms of energy must be converted into a controlled movement of electric charge.

That process sounds technical, but it is political and civilisational. Every conversion technology brings its own combination of land use, raw materials, waste, risk, cost, construction time and institutional requirements.

Coal and gas store energy in chemical bonds. Power plants release it through combustion, producing heat, steam, motion and ultimately electricity. Nuclear power uses the energy of atomic nuclei but requires exceptional systems of safety, finance and competence. Wind and solar consume no fuel, but they vary with weather and place different demands on grids, land, storage and reserves. Hydropower can be flexible and storable, but it changes landscapes and ecosystems. Geothermal energy can be dependable, but remains tied to geology and drilling capability.

None of these technologies exists merely as a price per kilowatt-hour. Each is a system offer.

Public debate nevertheless likes to compare isolated numbers. The low bid in a solar auction is set against the cost of a nuclear plant. A reactor’s high availability is contrasted with the rapid construction of a solar farm. Cheap gas fuel is cited without accounting for import and price risk. The result is a collection of correct numbers inside incorrect comparisons.

A fair assessment must ask at least five questions:

1. What service does the asset provide — energy, firm capacity, flexibility or system support?
2. When and where does it provide it?
3. What additional infrastructure does it require?
4. Which risks and costs are shifted to the grid, the state, nature or future generations?
5. How quickly can the whole system actually be built and maintained?

This does not mean that all technologies are equally good. It means that their differences must be measured where those differences matter.

The great conversion is also more material than its digital controls suggest. Grids require copper and aluminium; power plants require steel and concrete; batteries require lithium, graphite and other materials; motors and generators often require rare earths. The IEA expects strong additional copper demand from networks and electrification, while the currently visible project pipeline points to potential supply gaps during the 2030s.^[3]

Electrification does not free humanity from mining. It changes what is mined, where it is processed and which damage societies are willing to accept. A low-emission device can be clean where it operates and still possess a long material prehistory. Moral purity is not a technical property of a kilowatt-hour.

Nor can land conflicts be optimised away. Wind farms, solar fields, reservoirs, transmission lines, mines and waste repositories require space and consent. Energy-dense sources often use less land but may create more concentrated risks. Distributed sources may democratise generation, yet require coordination, networks and standardised inverters. Every solution moves burdens around.

The electric century must not be told as an escape from the physical world. It is the most ambitious reordering of that world since the Industrial Revolution.

The essential political skill is not choosing a perfect technology. It is building a portfolio whose parts complement one another, whose costs remain visible and whose errors can be corrected. A system needs cheap energy, firm capacity, flexibility, reserves, grids and people capable of operating all of them.

The last item is regularly underestimated. Civilisations rarely fail because nobody had a vision of the future. More often, nobody replaced the transformer in time.

The great conversion is therefore not merely a race of inventions. It is a test of whether societies can build, maintain, learn and set priorities.

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Part II — The Invisible Republic

Sources and notes

1. International Energy Agency, Global Critical Minerals Outlook 2025, Executive Summary: https://www.iea.org/reports/global-critical-minerals-outlook-2025/executive-summary