Emoncms.org privacy policy

Emoncms.org is run by Megni and is part of the OpenEnergyMonitor project.

This privacy policy applies to the emoncms.org service, Emoncms Android app and Emoncms iOS app.

What data do we hold, how is it collected and used?

How do we use your data?

We use your personal information to provide the emoncms.org service to you. We store your content so that you can access it via the website, android or ios app, and so you can choose to share it.

We will not share your data with any third parties without your explicit permission (e.g unless you provide consent for use of data for research purposes for a particular defined project). We will not use your data for advertisement purposes. We will only access your data for service maintenance such as data migration and backup integrity verification and in response to specific support requests we receive from you.

We may also use personal information as required by applicable law, legal process or regulation; or to investigate and help prevent security issues and abuse.

Publicly Available Information

All emoncms.org account data is private by default and can only be accessed by yourself and emoncms.org service administrators for service maintenance. You can choose to make feeds and dashboards public if you wish to share your data and dashboards publicly.

How is your data stored?

All non-timeseries account data is stored in a MySql database. Passwords are stored as a SHA256 cryptographic hash within this database. Timeseries data is stored as PHPTimeSeries or PHPFina feeds. Emoncms.org is built on a multi-server architecture with multiple storage servers. Your timeseries data may be stored on any of these storage servers and moved between them in order to manage disk and processor resource use.

How do we protect your data?

Emoncms.org has industry-standard security measures in place to protect the data under our control against loss, misuse, destruction, and alteration including but not limited to: Account authentication with username and password login or/and read & write api-key authentication. HTTPS TLS encryption is available by default. Passwords are stored as a cryptographic hash.

How long do we store your information?

We may keep your information for as long as your account remains active and as needed to provide you with the emoncms.org service.

How can I export my data?

Feed data can be exported in CSV format from the emoncms.org feeds page. Alternatively to migrate inputs and feeds to another Emoncms server its possible to use either the backup / replication script or the emoncms sync module. Dashboards can be downloaded using the sync module or using the html editor within the dashboard module configuration page.

How to remove or update your data

Feed data can be permanently removed from the emoncms.org server at any time by logging into your account and deleting the feeds you wish to delete. To delete your whole emoncms.org account, use the delete account feature on the 'My Account' page. Your Username and email can be changed from the emoncms.org account section.

Identifying the Data Controller and Processor

The Data Controller and Processor is Megni Partnership, trading as OpenEnergyMonitor, we are based in the UK.

Data Protection Authority

The data protection authority is the UK Information Commissioner's Office, https://ico.org.uk.

Changes to the Privacy Policy

We may modify this Privacy Policy at any time, and such modifications shall be effective upon posting of the modified Privacy Policy. Notification of material changes to this Privacy Policy will be provided by noting a new "updated" date that appears at the bottom of each page.

Contact Us

If you have any questions about this Privacy Policy, please contact us at:


Megni (T/A OpenEnegyMonitor)
Glyn Hudson & Trystan Lea
Caban Cyf, Brynrefail
Caernarfon, Gwynedd
LL55 3NR
United Kingdom

Updated Oct, 2023.