Smart Meter Email Alerts

Node.js app to retrieve half-hourly data from your Smart Meter to keep abreast of energy usage throughout the day.

Setup:

1. Register at https://data.n3rgy.com/consumer/home. To register, you'll need your MPAN/MPxN number (from your bill) and your GUID (excluding -'s) from your Smart Meter.
2. Access to an SMTP server - I used smtp.gmail.com, need to setup an App password for it to work.
3. A .env file in the root, containing the following:

SMTP_HOST e.g. smtp.gmail.com

SMTP_USER e.g. your gmail address

SMTP_PASS e.g. your app password for gmail

SMTP_PORT defaults to 587

API_AUTH i.e. your GUID from your smart meter (excluding -'s)

ALERT_RECIPIENTS e.g. comma separated list of recipient email address(es)

HIGH_WATERMARK_ELECTRICITY i.e. what you consider high usage for a 30 minute period (in watts) for each month, expressed as JSON, e.g. { "01": 300, "02": 400 } where "01" is January, "02" is February etc.

HIGH_WATERMARK_GAS i.e. what you consider high usage for a 30 minute period (in watts) for each month, expressed as JSON, e.g. { "01": 300, "02": 400 } where "01" is January, "02" is February etc.

PRICE_ELECTRICITY e.g. price in pence of a kWh of Electricity

PRICE_GAS e.g. price in pence of a kWh of Gas

Optional HIGH_USAGE_ONLY send only high usage alerts, defaults to false

Start process locally

npm start

Deployment to heroku

Connect repo to heroku and deploy. The Procfile will start a heroku worker, note free tier will go to sleep after 30 mins.

Note, there is a delay of a couple of hours in the data syncing to n3rgy so not exactly real-time.