MPRN Ireland 2026: What Your Meter Point Reference Number Is & Why Every Solar Installer Asks for It

Book a solar quote in Ireland and the first thing the installer asks for — usually before the site visit is even booked — is your MPRN. If you’ve never noticed the 11-digit number on the top-right of your electricity bill, or if you’re in a new-build and haven’t had a bill yet, that request can stall the whole conversation. So here’s the plain 2026 explainer: what an MPRN is, where to find yours, why solar installers need it before anything else happens, and the small handful of MPRN mistakes that quietly cost Irish homeowners their SEAI grant.

MPRN in a single sentence

Your Meter Point Reference Number is an 11-digit number that ESB Networks assigns to your property’s electricity connection — not to you, not to your supplier, but to the physical meter at your address. Every Irish home, business, farm and shed with an ESB connection has one. It always starts with 10, it never changes, and it stays with the property when you move.

Think of it as the postal address of your electricity supply. Your supplier can change every year; your MPRN stays put for decades.

What the digits mean

Position	What it identifies	Example
Digits 1–2	Fixed prefix — the system operator (ESB Networks). Always “10” in the Republic of Ireland.	10…
Digits 3–10	Sequentially issued identifier for the specific meter point.	1023 4567 89…
Digit 11	Check digit — validates that the first 10 digits were transcribed correctly.	…X

A valid Irish MPRN therefore looks like 10 1234 5678 9. Anything with 10 digits (not 11), or starting with something other than 10, is either miskeyed or it’s a different number entirely — most commonly a GPRN (Gas Point Reference Number), which is a separate 7-digit identifier used only for natural gas connections.

Six places you can find your MPRN today

1. Top-right of any recent electricity bill. Paper or PDF, every Irish supplier — Electric Ireland, SSE Airtricity, Energia, Pinergy, Bord Gáis, Community Power, Prepay Power — prints the MPRN in that same location. Some label it “MPRN”, some spell it out.
2. Your supplier’s online account or app. Log in, look on the account overview page. Usually shown right beside the meter serial number.
3. ESB Networks online. Register a free account at esbnetworks.ie, verify with your Eircode and meter serial, and it displays every MPRN associated with your address.
4. Call ESB Networks 1800 372 757. Have your Eircode and meter serial (on the front of the meter) ready. Response is instant.
5. The meter cabinet itself. On older meters, the MPRN is printed on a sticker inside the ESB service head. Newer smart meters display it directly on-screen when you scroll through the setup pages.
6. The Property Registration Authority Land Registry mapping (only for solicitors and some conveyancers — not a homeowner tool).

Why solar installers ask for it first

Every stage of an Irish solar install runs on the MPRN. There is genuinely no shortcut around it. Here’s where it’s used, in the order it comes up:

1. Quote validation. A serious installer will cross-reference the MPRN against the ESB Networks database to confirm the address is genuinely served by a single-phase (or three-phase) supply at the capacity they’re about to design for. A mismatch here caught early saves a wasted site survey later.
2. SEAI grant application. Your €1,800 SEAI solar grant is attached to the MPRN, not to you personally. If your MPRN has previously claimed a solar grant (e.g. the previous owner), you cannot claim again — the grant is once-per-MPRN, not once-per-owner. The MPRN is the first field on the grant application.
3. ESB Networks NC6 form. The NC6 microgeneration notification uses the MPRN to identify which meter point is now generating. Wrong MPRN, wrong address, no CEG payments.
4. Clean Export Guarantee enrolment. Your electricity supplier flags the MPRN as a microgeneration site once ESB Networks confirms the NC6. Without the MPRN correctly captured on the supplier account, no CEG credits appear.
5. Smart meter reprogramming. ESB Networks pushes the microgeneration firmware profile to the specific meter identified by the MPRN.

Five separate systems — SEAI, ESB Networks, your supplier, the microgeneration database, and the smart-meter fleet management — all rely on that same 11-digit key. Get it wrong at step 2 (the SEAI grant) and the error propagates through the rest.

The MPRN mistakes we see most often

1. Confusing MPRN with meter serial number

The meter serial number is the individual product identifier printed on the front of the meter unit itself — typically 8–10 digits, often starting with a letter. It changes if ESB Networks swaps the physical meter. The MPRN is the location identifier and doesn’t. Installers occasionally jot down the meter serial thinking it’s the MPRN. If your quote form has a field that’s ten digits instead of eleven, or starts with anything other than “10”, it’s the meter serial.

2. Confusing MPRN with GPRN

The GPRN (Gas Point Reference Number) is a 7-digit gas identifier issued by Gas Networks Ireland — entirely separate from the MPRN, entirely irrelevant to your solar install. Homes with dual-fuel bills sometimes have both on the same page; only the MPRN matters for solar.

3. Using an old MPRN on a new-build extension

If you’ve extended into a granny flat or converted a garage that now has its own sub-meter, that sub-meter may have its own MPRN. Solar on the extension should use the extension’s MPRN, not the main house’s.

4. Trying to claim the SEAI grant twice on the same MPRN

This is the single biggest financial mistake we see homeowners make in 2026. The SEAI Solar Electricity Grant is granted once per MPRN forever. If the previous owners of your house claimed the grant when they installed 2 kW in 2020, you cannot claim it in 2026 for adding a second array — even though you are a different person, and the previous system may already have been removed. Check the grant history before signing the SEAI application. Your installer can usually check this via the SEAI installer portal.

5. Wrong MPRN on the NC6

Copy-paste errors happen. An installer with three jobs on one day can occasionally paste the wrong MPRN onto a completion certificate. When ESB Networks flags the mismatch (they check address vs MPRN), the NC6 gets bounced and the CEG clock resets by weeks. The fix is fast if caught early — but always ask for the NC6 submission reference and glance at the MPRN on it.

MPRN in new-build homes

New-build owners routinely can’t find their MPRN in the first six months of moving in, because they haven’t had a bill yet, and the builder’s ESB Networks handover documentation went to the developer, not the new occupant. Options for extracting it:

• The developer’s ESB Networks connection paperwork will have it. Ask the sales agent for a copy.
• ESB Networks 1800 372 757 — give them your Eircode and meter serial (photograph the meter).
• Sign up with any electricity supplier — the MPRN populates on the first bill within a fortnight.
• If the meter is a smart meter, scroll through the on-meter display — the MPRN is usually on one of the info screens.

Solar installers are used to this — a new-build without a documented MPRN is not a dealbreaker. A quick call from your installer to ESB Networks resolves it.

MPRN, smart meters, and your export earnings

Since the CRU-mandated smart meter rollout crossed 1.8 million connected meters at the start of 2026, most Irish homes now have a smart meter capable of half-hourly reads. That meter is identified by the MPRN in ESB Networks’ database. When the NC6 is processed after your solar install, ESB Networks looks up the MPRN, checks which smart meter is fitted, and either pushes a firmware update to enable export reads or dispatches a reconfiguration job.

Two consequences worth knowing:

• No smart meter, no straightforward export reads. Homes still on legacy meters can only claim a “deemed export” percentage under the CEG (typically 30%) until a smart meter is fitted. This is one reason to check whether your MPRN already has a smart meter attached before installing solar.
• Smart-meter data by MPRN is downloadable. Log into your ESB Networks online account and you can download 30-minute usage granularity by MPRN. This is genuinely useful when sizing an Ireland solar inverter and battery — it beats the “annual bill divided by 12” approximations most installer sizing tools use.

MPRN vs the other Irish energy identifiers — sanity check

Identifier	Format	What it identifies
MPRN	11 digits, starts “10”	Your electricity meter point (used for solar).
GPRN	7 digits	Your gas connection. Irrelevant for solar.
Meter Serial No.	8–10 chars, may start with a letter	The physical meter box. Changes if ESB swap the meter.
RM Code	Alphanumeric, on the meter	Meter model / manufacturer identifier.
Eircode	7 chars, e.g. D02 X285	Your postal address. Not enough on its own for ESB Networks lookups.
Account Number	Varies per supplier	Your billing relationship with a specific supplier. Changes if you switch.

Frequently asked questions

Can two homes share an MPRN?
No. Each supply point has exactly one MPRN. A house converted into two flats will typically have two MPRNs — one per meter. If both flats share a single meter, the whole property has one MPRN and one bill.

Does my MPRN change if I switch supplier?
Never. That’s the point of the MPRN — it’s a stable identifier ESB Networks uses to hand your supply seamlessly between suppliers.

Does the MPRN change if ESB Networks installs a smart meter?
No. The meter serial number changes; the MPRN stays.

I’ve moved house. Do I “transfer” the MPRN?
No. Your old address’s MPRN stays with that address. Your new address has its own MPRN which stays with it too. When switching supplier at a new address, just quote the new MPRN.

Can I get my MPRN by Eircode alone?
Not usually — some Eircodes cover a small apartment block with multiple MPRNs. ESB Networks will ask for Eircode plus meter serial to disambiguate.

Is the MPRN sensitive information?
Modestly. On its own, it’s not enough to switch supplier or access your account. But treat it like a bank account number — don’t post it publicly.

What if the SEAI grant was already claimed on my MPRN by a previous owner?
You cannot re-claim the grant. You can still install solar (the 0% VAT rate still applies), but the €1,800 is gone forever on that MPRN. Confirm with SEAI or the installer before signing anything.

Do apartments have their own MPRN?
Yes, in almost all cases. Each apartment has an individual meter and MPRN. Common area lighting, lifts and OMC-billed loads have separate MPRNs of their own. See our apartment solar guide.

The bottom line

The MPRN is one of those pieces of infrastructure you can go decades without noticing until the moment you install solar — and then it’s asked for five times in three months by five different systems. Find it, write it down somewhere you’ll remember, and double-check it appears correctly on your SEAI application, your NC6, and your electricity account before you sign off on the installation. Those three consistency checks close off nearly every MPRN-related snag Irish homeowners hit.