---
title: "Query accepted native-XBRL FERC Form 1 large-steam plant facts. Returns one separately cited XBRL fact per respondent, report year, raw plant name, and source concept: installed capacity, net generat"
method: GET
path: "/v1/power/plant-costs/query"
---

# Query accepted native-XBRL FERC Form 1 large-steam plant facts. Returns one separately cited XBRL fact per respondent, report year, raw plant name, and source concept: installed capacity, net generat

`GET /v1/power/plant-costs/query`

## Request

- Base URL: `https://api.exascale.build`
- URL: `https://api.exascale.build/v1/power/plant-costs/query`
- Auth: none declared

GET mirror of the POST body for browsing-only agents (PD-061). Plain pairs (repeated keys → lists; group_by accepts commas; top_n/limit → int) or a fully-typed q=<URL-encoded JSON> parameter. Full input schema: GET /v1/power/plant-costs/schema

## Query parameters

- `q` string

## Response `200`

cited aggregates with citations

## Other responses

- `400`: structured error (invalid_parameter, invalid_filter, …)

---

[API](https://skmtc.dev/exascale/apis/exascale-build-rest-api.md) · [All operations](https://skmtc.dev/exascale/apis/exascale-build-rest-api/llms.txt) · [OpenAPI document](https://skmtc.dev/exascale/apis/exascale-build-rest-api/revisions/f47706905f93?raw)