---
title: "Determine Grid Region"
method: GET
path: "/v3/region-from-loc"
tags: ["GET Regions and Maps"]
---

# Determine Grid Region

`GET /v3/region-from-loc`

Emissions intensity varies by location, specifically the location where an energy-using device is interconnected to the grid. This endpoint, provided with latitude and longitude parameters, returns the details of the grid region serving that location, if known, or a Coordinates not found error if the point lies outside of known/covered regions.

## Query parameters

- `signal_type` union, required — signal_type for which to look up region
  - 'co2_moer' | 'health_damage'
  - 'co2_aoer'
- `latitude` number, required — Latitude of desired location
- `longitude` number, required — Longitude of desired location

## Response `200`

Successful Response

- RegionLocResponse
  - `region` string, required
  - `region_full_name` string, required
  - `signal_type` string, required

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.dev/watttime/apis/watttime-data-api.md) · [All operations](https://skmtc.dev/watttime/apis/watttime-data-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/watttime/watttime-data-api/revisions/2c85341b2839/schema)