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# List Utilities

GET https://api.coperniq.io/v1/utilities

Retrieve a paginated list of utilities.

Supports:

* Pagination (`page_size`, `page`)
* Sorting by name (`order_by`, default: asc)
* Search by name, holding company, or state code (`q`)
* Filter by `state` (two-letter code) and `ownership_type`
* Geo mode: pass `lat`+`lng` (together) to return every utility whose service territory covers the point, ordered most-specific-first. Name/state/ownership\_type filters are ignored, and an empty array is returned if none cover the point.

Only active utilities are returned. Utilities are seeded globally from the HIFLD catalog. Most fields are read-only; only custom fields can be updated (see PATCH /utilities/\{utility\_id}).

Reference: https://docs.coperniq.io/api-reference/utilities/list-utilities

## Authentication

- `x-api-key` header (required) — API Key authentication via header

## Request

### Query parameters

- `page_size` (integer, optional, default: 20) — Number of items per page (max 100)
- `page` (integer, optional, default: 1) — Page number (1-based)
- `q` (string, optional) — Search by utility name, holding company, or state code (case-insensitive).
- `state` (string, optional) — Filter by two-letter state code (e.g. "CA").
- `ownership_type` (enum, optional) — Filter by ownership type.
  - Allowed values: `INVESTOR`, `MUNICIPAL`, `MUNICIPAL_MARKETING_AUTHORITY`, `COOPERATIVE`, `FEDERAL`, `STATE`, `POLITICAL`, `COMMUNITY_CHOICE_AGGREGATOR`, `WHOLESALE_POWER_MARKETER`, `OTHER`
- `order_by` (enum, optional, default: asc) — Sort order for results
  - Allowed values: `asc`, `desc`
- `lat` (double, optional) — Latitude in decimal degrees. Must be used together with `lng`.
- `lng` (double, optional) — Longitude in decimal degrees. Must be used together with `lat`.

## Response

### 200

List of utilities

- `list of Utility`

## Errors

### 400 Bad Request Error

Invalid request

- `message` (string, optional)
- `code` (enum, optional)
  - Allowed values: `BAD_GATEWAY`
- `field` (string, optional) — Field that caused the validation error (if applicable)

### 401 Unauthorized Error

Authentication failed

- `message` (string, optional)
- `code` (enum, optional)
  - Allowed values: `BAD_GATEWAY`

### 502 Bad Gateway Error

Bad gateway — an upstream service request failed

- `message` (string, optional)
- `code` (enum, optional)
  - Allowed values: `BAD_GATEWAY`

## Types

### Utility

A utility. Most fields are read-only catalog data sourced from the HIFLD dataset; only fields under `custom` are user-editable.

- `id` (integer, optional) — Unique identifier.
- `name` (string, optional) — Utility name.
- `state` (string, optional, nullable) — Two-letter state code (e.g. "CA").
- `stateName` (string, optional, nullable) — Full state name (e.g. "California").
- `ownershipType` (enum, optional, nullable)
  - Allowed values: `INVESTOR`, `MUNICIPAL`, `MUNICIPAL_MARKETING_AUTHORITY`, `COOPERATIVE`, `FEDERAL`, `STATE`, `POLITICAL`, `COMMUNITY_CHOICE_AGGREGATOR`, `WHOLESALE_POWER_MARKETER`, `OTHER`
- `holdingCompany` (string, optional, nullable)
- `address` (string, optional, nullable)
- `phone` (string, optional, nullable)
- `website` (string, optional, nullable)
- `hoursOfOperation` (string, optional, nullable)
- `isActive` (boolean, optional) — Whether this utility is currently active in the catalog.
- `createdAt` (string, optional)
- `updatedAt` (string, optional)
- `custom` (map from string to any, optional) — Custom field values keyed by property keyName. This includes only customer-defined custom columns (see GET /properties?record_type=utility). Built-in catalog utility fields (name, state, ownershipType, holdingCompany, etc.) are exposed as top-level fields on the utility object and are read-only.

## Examples

**Response**

```json
[
  {
    "id": 1,
    "name": "string",
    "state": "string",
    "stateName": "string",
    "ownershipType": "INVESTOR",
    "holdingCompany": "string",
    "address": "string",
    "phone": "string",
    "website": "string",
    "hoursOfOperation": "string",
    "isActive": true,
    "createdAt": "2024-01-15T09:30:00Z",
    "updatedAt": "2024-01-15T09:30:00Z",
    "custom": {}
  }
]
```

**SDK Code**

```python
import requests

url = "https://api.coperniq.io/v1/utilities"

headers = {"x-api-key": "<apiKey>"}

response = requests.get(url, headers=headers)

print(response.json())
```

```javascript
const url = 'https://api.coperniq.io/v1/utilities';
const options = {method: 'GET', headers: {'x-api-key': '<apiKey>'}};

try {
  const response = await fetch(url, options);
  const data = await response.json();
  console.log(data);
} catch (error) {
  console.error(error);
}
```

```go
package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.coperniq.io/v1/utilities"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("x-api-key", "<apiKey>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(res)
	fmt.Println(string(body))

}
```

```ruby
require 'uri'
require 'net/http'

url = URI("https://api.coperniq.io/v1/utilities")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["x-api-key"] = '<apiKey>'

response = http.request(request)
puts response.read_body
```

```java
import com.mashape.unirest.http.HttpResponse;
import com.mashape.unirest.http.Unirest;

HttpResponse<String> response = Unirest.get("https://api.coperniq.io/v1/utilities")
  .header("x-api-key", "<apiKey>")
  .asString();
```

```php
<?php
require_once('vendor/autoload.php');

$client = new \GuzzleHttp\Client();

$response = $client->request('GET', 'https://api.coperniq.io/v1/utilities', [
  'headers' => [
    'x-api-key' => '<apiKey>',
  ],
]);

echo $response->getBody();
```

```csharp
using RestSharp;

var client = new RestClient("https://api.coperniq.io/v1/utilities");
var request = new RestRequest(Method.GET);
request.AddHeader("x-api-key", "<apiKey>");
IRestResponse response = client.Execute(request);
```

```swift
import Foundation

let headers = ["x-api-key": "<apiKey>"]

let request = NSMutableURLRequest(url: NSURL(string: "https://api.coperniq.io/v1/utilities")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error as Any)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()
```