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Steady-state economy

Steady-state economy is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Steady-state economy rather than just read about it. In short: A steady-state economy is an economy made up of a constant stock of physical wealth (capital) and a constant population size. In effect, such an economy does not grow in the course of time.

Steady-state economy — main illustration
Steady-state economy — illustration

Key takeaways

  • Steady-state economy belongs to physics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Steady-state economy to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Steady-state economy from memory before moving on to harder problems.

Reference excerpt

A steady-state economy is an economy made up of a constant stock of physical wealth (capital) and a constant population size. In effect, such an economy does not grow in the course of time. The term usually refers to the national economy of a particular country, but it is also applicable to the economic system of a city, a region, or the entire world. Early in the history of economic thought, classical economist Adam Smith of the 18th century developed the concept of a stationary state of an economy: Smith believed that any national economy in the world would sooner or later settle in a final state of stationarity. Since the 1970s, the concept of a steady-state economy has been associated mainly with the work of leading ecological economist Herman Daly. As Daly's concept of a steady-state includes the ecological analysis of natural resource flows through the economy, his concept differs from the original classical concept of a stationary state. One other difference is that Daly recommends immediate political action to establish the steady-state economy by imposing permanent government restrictions on all resource use, whereas economists of the classical period believed that the final stationary state of any economy would evolve by itself without any government intervention. Critics of the steady-state economy usually object to it by arguing that resource decoupling, technological development, and the operation of market mechanisms are capable of overcoming resource scarcity, pollution, or population overshoot. On the other hand, proponents of the steady-state economy maintain that these objections remain insubstantial and mistaken, and that the need for a steady-state economy is becoming more compelling every day.

Definition and vision Since the 1970s, the concept of a steady-state economy has been associated mainly with the work of leading ecological economist Herman Daly — to such an extent that even his boldest critics recognize the prominence of his work. Herman Daly defines his concept of a steady-state economy as an economic system made up of a constant stock of physical wealth (capital) and a constant stock of people (population), both stocks to be maintained by a flow of natural resources through the system. The first component, the constant stocks, is similar to the concept of the stationary state, originally used in classical economics; the second component, the flow of natural resources, is a new ecological feature, presently also used in the academic discipline of ecological economics. The durability of both of the constant stocks is to be maximized: The more durable the stock of capital is, the smaller the flow of natural resources is needed to maintain the stock; likewise, a 'durable' population means a population enjoying a high life expectancy — something desirable by itself — maintained by a low birth rate and an equally low death rate. Taken together, higher durability translates into better ecology in the system as a whole. Daly's concept of a steady-state economy is based on the vision that man's economy is an open subsystem embedded in a finite natural environment of scarce resources and fragile ecosystems. The economy is maintained by importing valuable natural resources from the input end and exporting valueless waste and pollution at the output end in a constant and irreversible flow. Any subsystem of a finite nongrowing system must itself at some point also become nongrowing and start maintaining itself in a steady-state as far as possible. This vision is opposed to mainstream neoclassical economics, where the economy is represented by an isolated and circular model with goods and services exchanging endlessly between companies and households, without exhibiting any physical contact to the natural environment. In the early 2010s, reviewers sympathetic towards Daly's concept of a steady-state economy have passed the concurrent judgement that although his concept remains beyond what is politically feasible at present, there is room for mainstream thinking and collective action to approach the concept in the future. In 2022 a research (chapters 4–5) described degrowth toward a steady state economy as something possible and probably positive. The study ends by the words:"The case for a transition to a steady-state economy with low throughput and low emissions, initially in the high-income economies and then in rapidly growing economies, needs more serious attention and international cooperation.

Historical background For centuries, economists and other scholars have considered matters of natural resource scarcity and limits to growth, from the early classical economists in the 18th and 19th centuries down to the ecological concerns that emerged in the second half of the 20th century and developed into the formation of ecological economics as an independent academic subdiscipline in economics.

Concept of the stationary state in classical economics

From Adam Smith and onwards, economists in the classical period of economic theorising described the general development of society in terms of a contrast between the scarcity of arable agricultural land on the one hand, and the growth of population and capital on the other hand. The incomes from gross production were distributed as rents, profits and wages among landowners, capitalists and labourers respectively, and these three classes were incessantly engaged in the struggle for increasing their own share. The accumulation of capital (net investments) would sooner or later come to an end as the rate of profit fell to a minimum or to nil. At that point, the economy would settle in a final stationary state with a constant population size and a constant stock of capital.

Adam Smith's concept

… excerpt ends here. Continue reading the full article.

Illustrations

Steady-state economy illustration
Steady-state economy: Smith examined the economic states of various nations in the world.
Smith examined the economic states of various nations in the world.
Steady-state economy: Ricardo was opposed to the interests of the landowning class.
Ricardo was opposed to the interests of the landowning class.
Steady-state economy: Mill believed the future stationary state was both inevitable, necessary and desirable.
Mill believed the future stationary state was both inevitable, necessary and desirable.
Steady-state economy: Marx replaced the concept of a stationary state with his vision of a communist society that would bring about abundance for everybody.
Marx replaced the concept of a stationary state with his vision of a communist society that would bring about abundance for everybody.

Worked examples

Example 1 — a first encounter with Steady-state economy

Start with the simplest possible case. Write down what Steady-state economy claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Steady-state economy before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Steady-state economy ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Steady-state economy

In research
Steady-state economy appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Steady-state economy in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Steady-state economy is common in secondary-school and first-year university syllabi. It links to neighbouring topics Degrowth, Demographic economic problems, Ecological economics, so understanding it makes those chapters shorter.
In everyday life
Look for Steady-state economy outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Steady-state economy in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Steady-state economy means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Steady-state economy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Steady-state economy in simple terms?

A steady-state economy is an economy made up of a constant stock of physical wealth (capital) and a constant population size. In effect, such an economy does not grow in the course of time.

Why does Steady-state economy matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Steady-state economy?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Steady-state economy.

Tags

  • Degrowth
  • Demographic economic problems
  • Ecological economics
  • Economic growth
  • Economic systems
  • Economics of sustainability
  • Energy conservation
  • Environmental social science
  • Future problems
  • Global environmental issues
  • Green politics
  • Human impact on the environment

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