Energy has driven every stage of urban development. From candles and coal gas to the electric grid and today’s advanced reactors, the story of cities is inseparable from the ways we generate, move, and use power. Understanding that trajectory clarifies what’s realistic for a resilient, low-carbon urban future.
Past: From Animal Power to Early Fuels
Lighting
Before electrification, city lighting came from candles, oils, and gas. Whale oil lamps illuminated many American homes and businesses from the 1700s into the late 1800s[1]; by the early 19th century, coal-gas streetlighting spread rapidly across European and North American cities (first public demonstrations in London occurred in 1807, with commercial adoption thereafter)[2].
These fuels and devices carried indoor air-quality risks. Combustion lighting (especially kerosene wick lamps) raises fine particulate and black-carbon exposure, and modern health agencies explicitly warn about household energy sources used for lighting, heating, and cooking because of burn and pollution risks[3].
Heating and Cooking
Urban households largely relied on wood until coal became widely accessible in the 19th century, supporting denser settlements and industrial heat. Electrification gradually displaced many direct-combustion uses in the 20th century (see electrification timeline in the UK: ~6% of homes wired in 1919 to ~⅔ by the late 1930s)[4].
Transport and “Horsepower”
Before motorization, cities depended on human and animal power—for haulage, deliveries, and emergency response—with substantial sanitation burdens. The oft-repeated “Great Horse Manure Crisis of 1894” turns out to be a modern myth[5], but the underlying challenges of animal-powered cities were real. Night-soil collection was standard practice in many 19th-century cities before sewer networks[6].
Present: Fossil Fuels, Electrification, and the Modern City
The arrival of steam power, fossil fuels, and centralized electricity unshackled cities from animal and human muscle, enabling dramatic growth in transportation, sanitation, industry, and housing. Electrification extended productive and leisure hours—“the day after dark”—and supported mechanization that reduced manual toil while enabling specialized urban work.
Integrating variable renewable energy (VRE) such as wind and solar presents planning challenges due to variability and balancing needs[7].
Future: Building a Resilient, Low-Carbon Urban Power System
Land-use benchmarks for utility-scale solar have been quantified by Berkeley Lab[8], and wind plant land use has been documented by NREL[9].
Pinatubo measurably reduced solar irradiance[10], and modeling suggests Tambora-like eruptions can reduce global wind-energy potential[11].
Why Nuclear Belongs in the Urban Mix
The AP1000 passive safety system can maintain safe shutdown for 72 hours with no AC power or operator action[12]. Fukushima led to global regulatory upgrades[13]. Reactor siting regulations define exclusion and low-population zones[14].
A Pragmatic Urban Path
The practical urban path is not “nuclear or renewables,” it’s both/and: Nuclear provides firm, low-carbon baseload and resilience against long-duration weather or aerosol events. Wind and solar provide low-cost clean energy with zero fuel risk, strengthened by transmission, demand flexibility, and short-/long-duration storage (hydrogen and other options noted by the IPCC)[15]. Together—backed by robust planning and modernization of the grid—these resources can power larger populations, electrify heat and transport, and support economic growth without the fragility of single-resource dependence.
Selected Books (Background)
[16] Smil, Vaclav. Energy and Civilization: A History. MIT Press, 2017. Publisher page
[17] Nye, David E. Electrifying America: Social Meanings of a New Technology, 1880–1940. MIT Press, 1990. Publisher page
[18] Jones, Lawrence E. (ed.). Renewable Energy Integration. Elsevier, 2017. Publisher page
[19] IAEA. Electric Grid Reliability and Interface with Nuclear Power Plants. International Atomic Energy Agency. IAEA page