# Natural gas: Fluctuation in time

Why winter demand and shale decline keep gas jumpy

Source page: https://www.materialinsights.org/energy/natural_gas/time/

What this tab covers How availability changes over seconds, days, seasons, years and longer, how predictable it is, and what that means for the plants that use it.

The gas stock is steady, but demand is strongly seasonal and gas plants are the main way power systems follow load. Shale wells decline steeply, so supply depends on constant drilling.

#### Variation by time scale

| Time scale | What happens | How large |
|---|---|---|
| **Hours to days** | Gas turbines start quickly and follow demand peaks and shortfalls in wind and solar output.^[8](https://www.eia.gov/electricity/annual/html/epa_04_08_a.html) | US gas combustion turbines ran at a 13.9% capacity factor in 2024 |
| **Seasonal** | Heating demand peaks in winter, and a smaller peak comes in summer from air conditioning via power plants. Storage fills in summer.^[9](https://www.eia.gov/dnav/ng/hist/n9140us2M.htm) | US consumption in January 2024 was 11.3% of the annual total, against 7.1% in May |
| **Shale supply without new drilling** | Fractured wells decline steeply after first production, so output depends on continuous drilling.^[10](https://www.iea.org/reports/the-implications-of-oil-and-gas-field-decline-rates/executive-summary) | If investment in tight oil and shale gas stopped, output would fall more than 35% within 12 months |
| **World supply without investment** | Most upstream investment only replaces decline.^[10](https://www.iea.org/reports/the-implications-of-oil-and-gas-field-decline-rates/executive-summary) | About 270 bcm lost each year, 9% on average |
| **Decades** | US shale transformed supply.^[11](https://www.eia.gov/tools/FAQs/faq.php?id=907&t=8) | Shale was 78% (37.87 tcf) of US dry gas production in 2023 |

#### How predictable it is

Production is controllable and steady. Demand is predictable seasonally but swings with cold spells and with wind and solar output, which makes storage and LNG flexibility important.

#### Capacity factors and utilisation

| Plant or measure | Value |
|---|---|
| **US natural gas combined-cycle plants, 2024** | 60.5%^[8](https://www.eia.gov/electricity/annual/html/epa_04_08_a.html) |
| **US natural gas combustion turbines (peakers), 2024** | 13.9%^[8](https://www.eia.gov/electricity/annual/html/epa_04_08_a.html) |

#### Monthly US natural gas consumption, 2024 (demand, not production)^[9](https://www.eia.gov/dnav/ng/hist/n9140us2M.htm)

Chart: Monthly US natural gas consumption, 2024 (demand, not production)
% of annual consumption (calculated from EIA monthly volumes)

Gas is the most time-flexible fossil fuel. Wells produce at a fairly constant rate, but consumption in a mid-latitude country like the US is about 60% higher in January than in May, because of space heating. Underground storage and, increasingly, LNG cargoes bridge the gap. Combined-cycle plants supply bulk power at around 60% capacity factor, while simple gas turbines serve peaks and run only about 14% of the time.

Depletion works differently for conventional and shale gas. Conventional fields decline slowly. Shale supply is a treadmill of new wells, which also means it can respond to prices within months.

#### Sources

1. [Electric Power Annual, Table 4.08.A Capacity factors for utility scale generators primarily using fossil fuels](https://www.eia.gov/electricity/annual/html/epa_04_08_a.html) US EIA, 2025
2. [U.S. natural gas total consumption (monthly, million cubic feet)](https://www.eia.gov/dnav/ng/hist/n9140us2M.htm) US EIA, 2025
3. [The Implications of Oil and Gas Field Decline Rates: Executive summary](https://www.iea.org/reports/the-implications-of-oil-and-gas-field-decline-rates/executive-summary) IEA, 2025
4. [How much shale gas is produced in the United States?](https://www.eia.gov/tools/FAQs/faq.php?id=907&t=8) US EIA, 2024

## Other sections

- [Summary](https://www.materialinsights.org/energy/natural_gas/index.md)
- [Energy overview](https://www.materialinsights.org/energy/natural_gas/energy/index.md)
- [Correlation](https://www.materialinsights.org/energy/natural_gas/correlation/index.md)
- [How energy resides](https://www.materialinsights.org/energy/natural_gas/resides/index.md)
- [Abundance](https://www.materialinsights.org/energy/natural_gas/abundance/index.md)
- [Across the Earth](https://www.materialinsights.org/energy/natural_gas/geography/index.md)
- [Impact on nature](https://www.materialinsights.org/energy/natural_gas/nature/index.md)
- [Overview](https://www.materialinsights.org/energy/natural_gas/overview/index.md)
- [Extraction](https://www.materialinsights.org/energy/natural_gas/extraction/index.md)
- [Production](https://www.materialinsights.org/energy/natural_gas/production/index.md)
- [Stocks](https://www.materialinsights.org/energy/natural_gas/stocks/index.md)
- [Cycles](https://www.materialinsights.org/energy/natural_gas/cycles/index.md)
- [Trading](https://www.materialinsights.org/energy/natural_gas/trading/index.md)
- [Movement](https://www.materialinsights.org/energy/natural_gas/movement/index.md)
- [Criticality](https://www.materialinsights.org/energy/natural_gas/criticality/index.md)
- [Characteristics](https://www.materialinsights.org/energy/natural_gas/characteristics/index.md)
- [Emissions](https://www.materialinsights.org/energy/natural_gas/emissions/index.md)
- [Relationships](https://www.materialinsights.org/energy/natural_gas/links/index.md)