# Generators and alternators and Transformers and power electronics

Energy flows from generators and alternators to transformers and power electronics; their prices have moved together.

Source page: https://www.materialinsights.org/links/generators-and-alternators-and-transformers-and-power-electronics/

[Generators and alternators](https://www.materialinsights.org/energy/e_generators/) (energy) and [Transformers and power electronics](https://www.materialinsights.org/energy/e_power_electronics/) (energy): 2 relationships.

## How they are linked

### 1. Energy flow

*Physical flow · 10% of flow · Generators and alternators → Transformers and power electronics*

Variable-speed generators need converters to match grid frequency.

- **10%** of Generators and alternators's energy goes this way

### 2. Price link: grid connection

*Cost and price · Strong · Both ways*

Generator output passes through transformers and converters to reach the grid, and both are ordered for the same power projects. Monthly moves correlate at 0.26 and yearly at 0.77, a common driver from grid investment and electrical equipment costs.

- **0.26** monthly change correlation
- **0.77** 12-month change correlation
- **0.67** fitted elasticity

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