Where do I download my ESB smart-meter data?

Go to myaccount.esbnetworks.ie, log in (or register using your MPRN), navigate to My Energy Consumption → Downloads, and download the "30 Minute Readings in kW" CSV file.

What file does Home Battery Planner need from ESB Networks?

The "30-minute readings in kW" CSV from the ESB Networks customer portal. This contains half-hourly Active Import readings covering up to two years.

Can I open the CSV in Excel or Numbers before uploading?

No. Spreadsheet apps silently reformat date columns and can corrupt the file. Upload the CSV exactly as downloaded from the portal.

How much historical data does ESB Networks provide?

ESB Networks provides up to two years of half-hourly data, regardless of whether you have changed electricity supplier during that period.

Do I need to be the registered customer to access ESB Networks smart-meter data?

Yes. You must be the registered customer for the MPRN. If you have recently moved in, smart-meter data may take up to 30 days post-installation before it becomes available.

Where do I download my half-hourly data from Electric Ireland?

Log in to electricireland.ie, go to Bills & Payments → Energy Usage, select your date range, and download the half-hourly consumption CSV.

An MPRN (Meter Point Reference Number) is the unique identifier for your electricity meter, printed on your electricity bill. You need it to register on the ESB Networks customer portal.

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How to get your meter data

Step-by-step guide to downloading your half-hourly CSV

Last updated 2026-05-13

You must be the registered customer for the MPRN (meter number) to access this data. If you have recently moved in, your smart meter may take up to 30 days post-installation before data becomes available.

1Create an ESB Networks account
Go to myaccount.esbnetworks.ie and click Register Now. You will need your MPRN (the meter number printed on your electricity bill), a phone number that matches your supplier's records, and an email address.
2Log in and go to My Energy Consumption
After logging in, scroll down on the home page and select My energy consumption.
3Open Downloads
Click the Downloads tab inside the energy consumption section.
4Download the 30-minute readings in kW
Locate "30 Minute Readings in kW" and click the CSV download button. This is the file this app needs — it contains the half-hourly Active Import Interval readings.
5Upload the file here
Come back to this page and upload the downloaded CSV. Do not open or re-save it in Excel or Numbers first — spreadsheet apps can silently reformat the date column and break parsing.

Do not open the CSV in Excel, Numbers, or Google Sheets before uploading. Spreadsheet apps reformat dates and may corrupt the file.

What data is available?

ESB Networks provides up to two years of data regardless of whether you have changed electricity supplier during that period. The download section offers several file types:

30-minute readings in kWUsed by this app
30-minute readings in kWhAlternative format — not used
Daily snapshot (day/night/peak) in kWhNot used
Daily snapshot with export data in kWNot used

Access your ESB Networks accountmyaccount.esbnetworks.ie

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Common questions

What if I have less than a year of ESB Networks data?

The tool works with any amount of data, but reports based on fewer than 7 days are flagged as low-confidence. Less than 3 months may miss seasonal variation — Irish homes use substantially more electricity in winter. For the most reliable recommendation, use at least 6–12 months.

Can I use Electric Ireland data instead of ESB Networks?

Yes. Select "Electric Ireland" in the source dropdown before uploading. ESB Networks is preferred where available — it provides up to two years of data regardless of which supplier you are with.

What if I have recently changed electricity supplier?

Your meter data is held by ESB Networks, not your supplier. You can download up to two years of readings from myaccount.esbnetworks.ie even if you switched mid-period. The Electric Ireland portal only covers periods when you were their customer.

Do I need a smart meter to use Home Battery Planner?

Yes. Half-hourly data is only available from smart (interval) meters. Check your ESB Networks account — if the 30-minute readings download is available, you have a smart meter.

What is an NC6 form and do I need one?

The NC6 is the ESB Networks notification form for new micro-generation installs (typically up to 6 kVA single-phase or 11 kVA three-phase). Your solar installer normally submits it on your behalf before the system is energised, together with a type-test certificate proving the inverter meets the IS EN 50549-1 standard. Without an NC6 on file, ESB Networks will not register your export readings and you cannot claim the SEAI Microgeneration Support Scheme (MSS) payments that Home Battery Planner factors into the payback calculation. More info at esbnetworks.ie/services/get-connected/renewable-connection/micro-generation.

What does the "Compare tariffs" page show?

Once your report is generated, a "Compare tariffs" link appears at the top. It reruns your consumption data against every major Irish electricity supplier and shows your estimated annual bill in three scenarios: today (no solar), with your planned solar array, and with solar plus a battery. You can slide the battery size to see how the costs shift. The table also shows how many charge cycles the battery would do per year on each tariff — a figure well below 250 suggests the battery is oversized for that supplier's rate structure.

Curious how the report is generated?Read the methodology →Unfamiliar with a term?Browse the glossary →