# Generators and alternators and Run-of-river and small hydro

Their prices have moved together.

Source page: https://www.materialinsights.org/links/generators-and-alternators-and-run-of-river-and-small-hydro/

[Generators and alternators](https://www.materialinsights.org/energy/e_generators/) (energy) and [Run-of-river and small hydro](https://www.materialinsights.org/energy/e_small_hydro/) (energy): 1 relationship.

## How they are linked

### 1. Price link: main input

*Cost and price · Moderate · Both ways*

Small turbines drive generators, a large part of equipment cost. The US generator index and the turbine proxy share an equipment cycle, with yearly changes correlating at 0.52. Small units are often bought ready-made.

- **0.05** monthly change correlation
- **0.52** 12-month change correlation
- **0.60** fitted elasticity

Built from the site data on production routes, energy flows, industry value chains, input-output tables and prices.