# Generators and alternators and Hydropower dams

Energy flows from hydropower dams to generators and alternators; their prices have moved together.

Source page: https://www.materialinsights.org/links/generators-and-alternators-and-hydropower-dams/

[Generators and alternators](https://www.materialinsights.org/energy/e_generators/) (energy) and [Hydropower dams](https://www.materialinsights.org/energy/e_hydro_dams/) (energy): 2 relationships.

## How they are linked

### 1. Energy flow

*Physical flow · 100% of flow · Hydropower dams → Generators and alternators*

Water turbines spin large generators inside the powerhouse.

- **100%** of Hydropower dams's energy goes this way

### 2. Price link: main input

*Cost and price · Moderate · Both ways*

Each turbine drives a large generator, so generator makers supply a major part of dam equipment. The US generator index and turbine proxy move together over a year, with 12-month changes correlating at 0.52, a shared equipment cycle.

- **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.