Nicor Gas Bill Downloader

A Node.js library to bulk download utility bills from the Nicor Gas/Southern Gas Company customer web portal.

Background

Most utility companies don't provide a way to bulk download utility bills and will limit the billing history to the last two years. This limit is often restricted by the user interface and can be bypassed by querying the server directly. This was the case for Nicor Gas / Southern Company.

Usage

The NicorGasBillDownloader class contains the following methods to for requesting and saving a bill for the Southern Gas Company customer portal:

• authenticate() - Authenticates and performs the necessary server operations to download bills.
• tryBulkDownload() - Attempts to locate and download all bills within in range of dates.
• tryDownloadingBill() - Attempts to locate and download a bill for a specific month/year.
• requestBill() - Requests a bill for given issue date.

import { sub } from 'date-fns';
import { NicorGasBillDownloader } from './downloader.mjs';

const ACCOUNT_NUMBER = '12349780000';
const BILL_ID = '98567123467';
const USERNAME = 'JohnDoe';
const PASSWORD = 'FooBaBaz123';

const to = new Date();
const from = sub(to, { months: 2 });
const saveDirectory = import.meta.dirname;
const billDownloader = new NicorGasBillDownloader(ACCOUNT_NUMBER, BILL_ID);
await billDownloader.authenticate(USERNAME, PASSWORD);
await billDownloader.tryBulkDownload(from, to, saveDirectory);

System Requirements

• Node v18+
• x64 Architecture

License

MIT License