# Run-of-river and small hydro: Relationships

Source page: https://www.materialinsights.org/energy/e_small_hydro/links/

Every element and industry that Run-of-river and small hydro is linked to, and how. Each pair has its own card explaining the relationships between the two.

- [Water](https://www.materialinsights.org/links/run-of-river-and-small-hydro-and-water/): Run-of-river and small hydro needs water; their prices have moved together.
- [Copper](https://www.materialinsights.org/links/copper-and-run-of-river-and-small-hydro/): Their prices have moved together.
- [Distribution grids, mini-grids and interconnectors](https://www.materialinsights.org/links/distribution-grids-mini-grids-and-interconnectors-and-run-of-river-and-small-hydro/): Energy flows from run-of-river and small hydro to distribution grids, mini-grids and interconnectors.
- [Generators and alternators](https://www.materialinsights.org/links/generators-and-alternators-and-run-of-river-and-small-hydro/): Their prices have moved together.
- [High-density polyethylene](https://www.materialinsights.org/links/high-density-polyethylene-and-run-of-river-and-small-hydro/): Their prices have moved together.
- [Mechanical power transmission](https://www.materialinsights.org/links/mechanical-power-transmission-and-run-of-river-and-small-hydro/): Energy flows from run-of-river and small hydro to mechanical power transmission.
- [Natural reservoirs](https://www.materialinsights.org/links/natural-reservoirs-and-run-of-river-and-small-hydro/): Energy flows from natural reservoirs to run-of-river and small hydro.
- [Steel](https://www.materialinsights.org/links/run-of-river-and-small-hydro-and-steel/): Their prices have moved together.
- [Water cycle](https://www.materialinsights.org/links/run-of-river-and-small-hydro-and-water-cycle/): Energy flows from water cycle to run-of-river and small hydro.

## Other sections

- [Summary](https://www.materialinsights.org/energy/e_small_hydro/index.md)
- [Overview](https://www.materialinsights.org/energy/e_small_hydro/overview/index.md)
- [Correlation](https://www.materialinsights.org/energy/e_small_hydro/correlation/index.md)
- [Efficiency](https://www.materialinsights.org/energy/e_small_hydro/efficiency/index.md)
- [Techniques](https://www.materialinsights.org/energy/e_small_hydro/techniques/index.md)
- [Resources and labour](https://www.materialinsights.org/energy/e_small_hydro/resources/index.md)
- [Impact on the biosphere](https://www.materialinsights.org/energy/e_small_hydro/biosphere/index.md)