# POWERCHINA’s Piauí transmission line enters commercial operation

> POWERCHINA’s 500 kV transmission line in Piauí, Brazil, entered commercial operation; the announced line length is 304 km.

- **Source date:** 2026-09-20
- **Original source:** [POWERCHINA](https://en.powerchina.cn/2026-09/20/c_829121.htm)
- **Reading time:** 1 min
- **Language:** en
- **URL:** https://voltformer.com/news/powerchina-piaui-brazil-500-kv-energization-2026
- **Markdown:** https://voltformer.com/news/powerchina-piaui-brazil-500-kv-energization-2026.md

## Official announcement

POWERCHINA’s 500 kV transmission line in Piauí, Brazil, entered commercial operation; the announced line length is 304 km.

[POWERCHINA](https://en.powerchina.cn/2026-09/20/c_829121.htm)

## Scope and engineering interpretation

For transmission delivery, the important interface is how the line and substation operate together. Protection coordination, power transformers, site testing and utility acceptance require separate execution packages. This engineering interpretation explains why the disclosed grid scope matters.

## How to read the announcement

The project facts above come from the linked company announcement. The technical discussion is an editorial interpretation of their practical significance. The stated contract, construction or operating milestone retains its original context; no additional date, customer or completion outcome is assumed.

## Related company profiles

- [POWERCHINA](https://voltformer.com/epc-contractors/powerchina) · [Markdown](https://voltformer.com/epc-contractors/powerchina.md)

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