# Power Sources in the United States

Part of the Geology Merit Badge Digital Resource Guide: [Introduction & Overview](https://merit-badge.university/merit-badges/geology/guide/index.md)

*4. Energy Resources*

> **4b1.** List the top five Earth resources used to generate electricity in the United States.

This requirement sounds simple, but it is more useful than it first appears. It reminds you that geology is tied directly to modern energy systems. Electricity does not come from a wall outlet by magic. It comes from fuels and materials that were formed in Earth systems and then extracted for human use.

## What Counts as an Earth Resource?

For this requirement, focus on resources that come from the Earth and are used directly or indirectly to produce electricity. A current top-five list may change over time, so use the most recent official data your counselor prefers. In recent years, major sources have commonly included:

- **Natural gas**
- **Coal**
- **Uranium** used in nuclear power
- **Water** used in hydropower
- **Wind** and other renewables may appear in broader electricity discussions, but this requirement specifically pushes you to think about Earth resources and geology-linked energy sources

Depending on how your counselor interprets the wording and the latest national data, you may want to discuss how natural gas and coal dominate fuel-based generation while uranium and water also matter.

## Why This Matters in Geology

Each energy source connects to a different geologic story:

- **Coal** formed from ancient plant material buried, compressed, and altered over time.
- **Natural gas** formed from organic-rich source rocks and accumulated in traps.
- **Uranium** comes from mineral deposits that must be found and mined.
- **Hydropower** depends on landforms, drainage, and water movement shaped by geology.

> **Tip**
>
> When you make your list for your counselor, add one sentence explaining where each resource comes from geologically. That turns a basic list into a geology answer.

## Official Resources

[Electric Power Monthly (website)](https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=table_es1a): Current U.S. electricity-generation data you can use to identify the major resources contributing to national power production.

Now that you have the big-picture energy list, the next step is to understand what must happen underground before oil and gas can collect in one place.

---

- Previous: [Energy Underground](https://merit-badge.university/merit-badges/geology/guide/req4b/index.md)
- Next: [Source, Trap, and Reservoir](https://merit-badge.university/merit-badges/geology/guide/req4b2/index.md)