# X-energy

## Overview
Advanced nuclear company developing the Xe-100, a pebble bed high-temperature gas-cooled reactor (HTGR).

## Technology
- **Xe-100 Design**: 200 MWt / ~80 MWe per unit
- **Heat Transfer**: Pressurized helium as primary coolant
- **Key Feature**: "Helium remains chemically inert and single-phase at operating temperatures, enabling efficient heat transfer without phase change or material degradation"
- **Architecture**: Hot helium exits reactor, transfers heat through steam generator into separate water loop
- **Thermal Approach**: No molten salt in primary or secondary circuits; entirely gas-cooled design with no CSP technology overlap

## Timeline
- **2026** — Xe-100 design specifications publicly documented