Renewable Resources: Definition, Examples and Renewability

“Renewable” is usually used about energy, but the idea is much older and broader. Forests, fish stocks, fresh water and farmland soil are all renewable resources, and so are the sunlight and wind that power modern renewable energy systems. What they share is that nature replaces them. What separates them is how fast.

This guide defines a renewable resource, gives examples inside and outside the energy sector, explains renewability and why “renewable” is not the same as “sustainable”, and includes a reference table you can use for homework or reports.

What is a renewable resource?

A renewable resource is a natural resource that is replenished by natural processes at a rate comparable to, or faster than, the rate at which people use it. Sunlight, wind, rain, forests, crops and fish are all renewable resources.

The opposite is a nonrenewable resource: one that exists in a fixed amount or forms so slowly (over millions of years) that using it permanently reduces the supply. Coal, oil, natural gas, uranium and most metal ores are nonrenewable. Our non-renewable resources guide covers them in depth.

Three things decide whether a resource counts as renewable:

1. A natural replenishment process. The sun shines, the water cycle runs, trees grow, fish reproduce.
2. A human timescale. Replenishment happens within years, decades or at most a few human lifetimes, not geological ages.
3. Use that does not outrun it. If extraction is faster than regeneration, even a renewable resource will decline.

For energy, the IPCC’s Special Report on Renewable Energy Sources (2011) turns these tests into a formal definition: energy from solar, geophysical or biological sources that is replenished by natural processes at a rate that equals or exceeds its rate of use. Economists make the same split between renewable and exhaustible resources, a line of thinking that goes back to Harold Hotelling’s 1931 paper on how a finite stock should be priced and used over time.

What are examples of renewable resources?

Examples of renewable resources include sunlight, wind, flowing water, tides and waves, geothermal heat, forests and timber, crops and other biomass, fresh water, fish and wildlife, and the oxygen produced by plants. Soil is renewable in principle but forms extremely slowly.

Renewable energy resources

These are the resources behind renewable electricity, heat and fuel:

• Solar energy: sunlight converted to electricity by photovoltaic (PV) panels or to heat by solar collectors. See solar energy.
• Wind: moving air that turns turbines. See wind energy.
• Hydropower: flowing and falling water driven by the water cycle. Global output reached about 4,578 TWh in 2024 (IHA). See hydroelectric power.
• Geothermal: heat from inside the Earth. See geothermal energy.
• Biomass: wood, crops, manure and waste. See biomass energy.
• Ocean energy: tides and waves. See tidal and wave energy.

In the United States, renewable sources supplied about 9% of total energy consumption in 2025, about 8.83 of 96.26 quadrillion Btu, according to the EIA. Their share of electricity is much higher: about 24% of utility-scale generation in 2025 (EIA), led by wind at about 11%, solar at about 7% and hydropower at about 6%.

Renewable resources beyond energy

Many of the resources people depend on most are renewable but have nothing to do with power plants:

• Fresh water: replenished by rain and snow through the water cycle.
• Forests and timber: regrow after harvest, given time and replanting.
• Fish and seafood: reproduce naturally if stocks are not overfished.
• Crops and livestock: regrown each season or generation.
• Soil: rebuilt by weathering rock and decaying organic matter, but very slowly.
• Clean air and oxygen: produced by plants and algae through photosynthesis.
• Natural fibers: cotton, wool, bamboo and hemp.

20 examples of renewable resources (reference table)

The table below lists 20 common renewable resources, how each is replenished, and the main risk of depletion. The energy resources (sunlight, wind, tides, waves, geothermal heat, flowing water and biomass) are the examples most often given in a list of 5, 7 or 10; the rest are renewable materials, food, air and water.

Resource	Type	How it is replenished	Renewal speed	Main depletion risk
Sunlight	Energy	Solar radiation	Continuous	None on human timescales
Wind	Energy	Uneven solar heating of the atmosphere	Continuous	None
Tides	Energy	Gravity of the moon and sun	Twice daily cycle	None
Geothermal heat	Energy	Heat from Earth’s interior	Continuous (local reservoirs can cool if overused)	Overdrawing a local reservoir
River water and hydropower	Water / energy	Water cycle: evaporation, rain, runoff	Seasonal	Drought, over-allocation
Groundwater	Water	Rain soaking into aquifers	Years to thousands of years	Pumping faster than recharge
Forests and timber	Material / biomass	Tree growth	Decades	Deforestation
Crops	Food / biomass	Planting and growth	One season	Soil degradation, water shortage
Fish stocks	Food	Reproduction	Years	Overfishing
Topsoil	Land	Rock weathering and organic matter	Up to 1,000 years per cm (FAO)	Erosion, degradation
Ocean waves	Energy	Wind blowing over the sea	Continuous	None
Rain and snow (fresh water)	Water	Water cycle	Days to seasons	Drought, pollution
Biogas from manure and waste	Energy	Decomposing organic matter	Continuous while waste is produced	None if feedstock continues
Oxygen	Air	Photosynthesis by plants and algae	Continuous	Loss of forests and ocean plankton (locally)
Livestock	Food / material	Breeding	One to a few years	Overgrazing, disease
Wild animals and game	Food	Reproduction	Years	Overhunting, habitat loss
Grassland and pasture	Land / food	Regrowth of grasses	One season	Overgrazing, desertification
Cotton and plant fibers	Material	Planting and growth	One season	Water and soil depletion
Wool	Material	Sheep regrow their fleece	About a year	Overgrazing
Bamboo	Material	Fast regrowth from roots	A few years	Clearing faster than regrowth

Sources: USGS (water cycle), FAO (forests and soil), EIA (biomass and biogas). Renewal speeds are general descriptions, not precise rates. For finite resources, see our list of non-renewable resources.

History of the renewable resource idea

The idea that some resources renew and others run out was formalized by economists and the United Nations between 1865 and 1987. It moved from a worry about coal, to a theory of exhaustible resources, to the modern concept of sustainable development.

In 1865 the English economist William Stanley Jevons published The Coal Question, arguing that Britain’s industrial lead rested on a coal stock that could not last (Online Library of Liberty). In 1931 Harold Hotelling’s “The Economics of Exhaustible Resources” in the Journal of Political Economy gave the first rigorous model of how a finite stock is used up; its core result, now called Hotelling’s rule, is that the net price of an exhaustible resource should rise over time at the rate of interest (doi:10.1086/254195).

Renewable resources entered the public debate with The Limits to Growth (1972), a Club of Rome study that modeled what happens when population and industry outgrow the planet’s resources (Club of Rome). In 1987 the UN’s Brundtland Commission defined sustainability as “meeting the needs of the present without compromising the ability of future generations to meet their own needs” (United Nations), which is the root of today’s distinction between a renewable resource and sustainable use of it.

Year	Milestone	Source
1865	Jevons, The Coal Question, warns that Britain’s coal stock is finite	Online Library of Liberty
1931	Hotelling, “The Economics of Exhaustible Resources”	Journal of Political Economy
1972	The Limits to Growth published for the Club of Rome	Club of Rome
1981	UN Conference on New and Renewable Sources of Energy, Nairobi	UN Digital Library
1987	Brundtland Commission defines sustainable development	United Nations
1992	Rio Earth Summit adopts Agenda 21	United Nations
2011	IPCC publishes a formal definition of renewable energy (SRREN)	IPCC
2015	UN Sustainable Development Goal 7: affordable and clean energy	UN SDGs

Science has since added a planetary view: Steffen et al. (2015) set out “planetary boundaries” for land use, freshwater use and other Earth systems, a way of measuring when use of a renewable resource outruns what the planet can regenerate.

What is renewability?

Renewability is the ability of a resource to replace itself through natural processes in a time frame that matters to people. It is not a yes-or-no property but a spectrum, set by the ratio between how fast the resource regenerates and how fast it is used.

It helps to think of three groups:

• Flow resources (inexhaustible): sunlight, wind, tides and waves. Using them today does not reduce what is available tomorrow. A solar panel on your roof does not use up the sun.
• Stock-and-flow resources (renewable if managed): forests, fish, groundwater, soil and grassland. They have a stock that regrows; if harvest exceeds regrowth, the stock shrinks and can collapse.
• Stock resources (nonrenewable): fossil fuels and minerals. The stock is fixed for practical purposes.

The middle group is where most problems happen. These resources are renewable on paper but can be depleted in practice.

Renewable vs sustainable use: what is the difference?

A renewable resource is one that can replenish itself; sustainable use means using it in a way that lets it keep replenishing indefinitely. Renewable describes the resource, sustainable describes how people manage it. For how the same test applies to power sources, see our sustainable energy guide.

Real-world examples show the difference:

Forests

Forests are renewable, yet the FAO’s Global Forest Resources Assessment 2025 found that about 10.9 million hectares (about 27 million acres) of forest were lost to deforestation each year between 2015 and 2025. That is down from 17.6 million hectares a year in 1990 to 2000, but the FAO calls the current rate still too high. Net forest loss, after counting new forest growth, averaged about 4.12 million hectares a year over 2015 to 2025. The world still has about 4.14 billion hectares of forest, roughly a third of its land area.

Soil

Soil is the classic “renewable but not really” resource. The FAO has said it can take up to 1,000 years to form a single centimeter of soil, and in 2022 it warned that 90% of the Earth’s topsoil could be at risk by 2050 if degradation continues. At those rates, soil lost to erosion is gone for many human lifetimes.

Water

Water is renewed by the water cycle. The USGS estimates that about 96.5% of Earth’s water is in the oceans and that the oceans supply about 90% of the water that evaporates into the water cycle. But fresh water in a particular river or aquifer can still be used faster than rain refills it, which is why some aquifers have dropped sharply.

Biomass energy

Burning wood for energy uses a renewable resource. Whether it is sustainable depends on whether harvested forests regrow and on what else is affected. The EIA notes that overharvesting wood can cause deforestation. Our biomass energy guide covers this debate in detail.

Example	Renewable?	Used sustainably when…	Used unsustainably when…
Forest	Yes	Harvest is at or below regrowth and the forest is replanted	Cleared faster than it regrows or converted to other land use
Fishery	Yes	Catch limits keep the breeding stock stable	Overfishing causes the stock to collapse
Aquifer	Yes, slowly	Pumping is at or below recharge	Pumping exceeds recharge for years
Farm soil	Yes, very slowly	Cover crops and low tillage keep erosion below formation	Erosion strips topsoil faster than it forms
Sunlight and wind	Yes	Always, as a resource	Not applicable; the resource cannot be overused

Is it renewable? Quick answers for common resources

Most everyday resources fall clearly on one side of the line, but a few sit in between. Here are short answers for the ones people ask about most.

• Is solar energy renewable? Yes. Sunlight arrives continuously and using it does not reduce the supply.
• Is wind renewable? Yes. Wind is created by the sun heating the atmosphere unevenly and will keep blowing.
• Is hydropower renewable? Yes, because the water cycle refills rivers, but output falls in droughts. Global hydropower generation rebounded about 10% in 2024 after a dry 2023 (IHA).
• Is geothermal energy renewable? Yes overall. Heat from Earth’s interior is effectively limitless, although an individual geothermal reservoir can cool or lose pressure if it is overdrawn.
• Is biomass renewable? Yes, when plants are regrown. It becomes depleting when forests are cleared faster than they recover.
• Is natural gas renewable? No. Fossil natural gas formed over millions of years. Renewable natural gas made from manure, landfills or food waste is a different, biogenic product.
• Is nuclear energy renewable? No. Uranium is a mined mineral with a finite supply, though nuclear power is low-carbon.
• Is paper renewable? Paper is made from wood, a renewable resource, and can be recycled several times.
• Are metals renewable? No. Metal ores are finite, but metals such as aluminum, copper and steel can be recycled repeatedly, which stretches the supply.
• Is soil renewable? Technically yes, practically barely. At up to 1,000 years per centimeter (FAO), eroded topsoil does not come back on human timescales.

Recycling deserves a note: it does not make a finite resource renewable, but it reduces how fast the stock is drawn down.

Renewable vs nonrenewable resources

Renewable resources are replenished by natural processes on human timescales; nonrenewable resources exist in finite amounts or form over millions of years. Energy from renewables also tends to produce far fewer emissions in use.

Feature	Renewable resources	Nonrenewable resources
Replenishment	Natural, within years to decades (or continuous)	Millions of years, effectively none
Examples	Sun, wind, water, forests, fish	Coal, oil, natural gas, uranium, metal ores
Can run out?	Flow resources no; stock resources yes, if overused	Yes
Energy emissions	Low or none during use (biomass is the main exception)	Fossil fuels emit CO2 when burned
US share of energy consumption	About 9% (EIA, 2025)	About 91% (fossil fuels and nuclear)

For a full side-by-side on energy specifically, read renewable vs nonrenewable energy.

Why are renewable resources important?

Renewable resources matter because they can supply energy, food, water and materials indefinitely if managed well, while nonrenewable resources will eventually run short. In energy, they also cut greenhouse gas emissions and air pollution.

• Long-term supply. Sunlight and wind cannot be depleted.
• Lower emissions. Wind, solar and hydropower produce electricity without burning fuel; Panwar, Kaushik and Kothari (2011) review the environmental gains. See clean energy.
• Energy security. Domestic sun, wind and water reduce dependence on imported fuels.
• Ecosystem services. Forests, soil and fisheries also clean water, store carbon and support biodiversity.
• Lower running costs. Renewable power plants have no fuel bill. To see what electricity costs you at home, try the electricity cost calculator, or convert appliance power into energy with the kWh calculator.

The broader benefits of renewable energy are covered in advantages of renewable energy.

How can we use renewable resources sustainably?

Using renewable resources sustainably means taking no more than nature replaces, protecting the systems that regenerate them, and switching from finite resources where possible.

1. Match harvest to regrowth. Set catch limits, harvest quotas and pumping limits based on measured regeneration.
2. Replant and restore. Reforest cleared land, restore wetlands and rebuild degraded soils with cover crops and reduced tillage.
3. Reduce waste. Use water, wood and food more efficiently so less needs to be taken.
4. Shift energy to flow resources. Wind, solar and hydropower replace fossil fuels without depleting a stock.
5. Monitor and adapt. Track forest cover, fish stocks and aquifer levels, and change rules when trends turn negative.

At home, the simplest steps are using less energy, choosing renewable electricity where available, and cutting waste. Our renewable energy sources guide shows which technologies can work for different homes and regions.

Scientific references

• Hotelling, H. (1931). “The Economics of Exhaustible Resources.” Journal of Political Economy, 39(2), 137–175. doi:10.1086/254195
• World Commission on Environment and Development (1987). Our Common Future (the Brundtland Report). UN document A/42/427. UN Digital Library
• IPCC (2011). Renewable Energy Sources and Climate Change Mitigation: Special Report of the Intergovernmental Panel on Climate Change (O. Edenhofer et al., eds.). Cambridge University Press. doi:10.1017/CBO9781139151153
• Steffen, W. et al. (2015). “Planetary boundaries: Guiding human development on a changing planet.” Science, 347(6223), 1259855. doi:10.1126/science.1259855
• Panwar, N. L., Kaushik, S. C., & Kothari, S. (2011). “Role of renewable energy sources in environmental protection: A review.” Renewable and Sustainable Energy Reviews, 15(3), 1513–1524. doi:10.1016/j.rser.2010.11.037

Bottom line

A renewable resource is one that nature replenishes on a human timescale: sunlight, wind, water, tides, geothermal heat, forests, crops, fish and, very slowly, soil. Renewability ranges from inexhaustible (the sun) to fragile (topsoil that can take up to 1,000 years per centimeter to form, per the FAO).

Renewable is not the same as sustainable. Forests, fisheries and aquifers can all be depleted if use outruns regrowth, as the FAO’s deforestation figures show. For energy, renewable resources supplied about 9% of US consumption and about 24% of US utility-scale electricity in 2025 (EIA). To keep exploring clean, renewable power, visit our renewable energy homepage.