The two suppliers answer different questions. Electric Ireland is the incumbent that most never-switched Irish homes are still on: a billed account, a 16% new-customer discount worth €1,612 at CRU typical usage in year one, and a standard rate of €1,868 when the discount lapses. Prepay Power is Ireland’s biggest pay-as-you-go brand: you top up before you burn, nobody runs a credit check, and the price of that control is a prepayment service charge of up to €164 a year on top of a fatter standing charge — so its supplier-published Estimated Annual Bill sits at €2,106 every year, with no teaser and no cliff.
We score Electric Ireland 7.2 and Prepay Power 6.6, and the money maths above is why. But this page is not a lecture that prepay is wrong. Prepay Power exists because bill-pay assumes a direct debit, a clean switching record and a tolerance for a €400 winter bill landing in one go. If any of those is not true of your house, the premium buys something real. What it should never buy is inertia — if you went prepay years ago because you had to and could pass a credit check today, you are donating roughly €494 a year to habit. Rankings: best energy for Ireland and best prepay electricity.
Quick comparison
Side by side from published August 2026 prices and contract terms. Green highlights the better figure on each measurable row.
| Electric Ireland | Prepay Power | |
|---|---|---|
| Our score | 7.2 | 6.6 |
| Elec year 1 (EAB) | €1,522 | €1,983 |
| Elec year 2 (EAB) | €1,868 | €1,983 |
| Gas year 1 (EAB) | €1,499 | €1,783 |
| Gas year 2 (EAB) | €1,633 | €1,783 |
| Fuels | Electricity + Gas | Electricity + Gas |
| Dual fuel | Yes | Yes |
| Prepay option | Yes | Yes |
| Exit fees | €50 incl VAT per fuel if you leave a fixed-term plan early; nothing once the 12 months are up | Electricity: €11.25 for every month (or part-month) left of the 12-month initial period — up to about €135 if you leave immediately after cooling-off. Gas: €50 cancellation fee. Both from the rate card checked 28 Aug 2026. |
The all-in maths: €494 apart on the same 4,200 kWh
Prepay comparisons go wrong when they stop at the unit rate. The honest measure is the all-in Estimated Annual Bill at CRU typical usage (4,200 kWh electricity), and Prepay Power publishes its own: €2,105.81 a year on Smart Pay 24h, urban, including 9% VAT — unit rate, standing charge, PSO and a €164.41 prepayment service charge that bill-pay customers simply do not pay. Electric Ireland’s EnergySaver 16% deal works out at €1,612 on the same usage. That is a €494 premium for topping up, every year, before you boil a kettle differently. Gas tells the same story: Prepay Power €1,783 against Electric Ireland’s €1,499 — €284 more.
| Electricity, urban, inc VAT | Electric Ireland (EnergySaver 16%) | Prepay Power (Smart Pay 24h) |
|---|---|---|
| Unit rate | 31.95c year 1 / 38.04c after | 37.62c flat |
| Standing charge / year | €250.76 | €342.69 |
| Prepayment service charge / year | €0 | €164.41 |
| PSO levy / year | €19.10 | €19.10 |
| EAB, year 1 (4,200 kWh) | €1,612 | €2,106 |
Read the middle rows: before either home burns a single unit, Prepay Power collects about €526 a year in fixed charges (standing + service charge + PSO) against Electric Ireland’s €270. Prepay Power’s €100 welcome credit softens the first months, but it is a one-off top-up (the current offer is end-dated 31 August 2026), not a rate — it does not appear in either EAB and does not recur. On dual fuel the gap compounds: both fuels at Prepay Power come to about €3,889 a year versus €2,912 on Electric Ireland’s dual discount — €977 apart. The PSO levy falls from €1.59 to €0.56 a month on 1 October 2026 for every supplier equally, so it moves neither side of this ledger.
No cliff at Prepay Power — but its flat line sits above the cliff
Prepay Power’s best structural argument is honesty: there is no teaser, so there is no year-two cliff. €2,106 in year one is €2,106 in year two. Electric Ireland’s €1,612 is a 12-month discount that lapses to the €1,868 standard rate. So does the incumbent’s advantage evaporate at month 13? No — it narrows from €494 to €238 and stops there. Even Electric Ireland’s undiscounted loyalty rate undercuts Prepay Power’s only rate.
The decomposition is telling. Prepay Power’s unit rate (37.62c) is actually a shade under Electric Ireland’s standard 38.04c — the entire year-two gap is fixed charges: €256 more standing-plus-service charge, minus about €18 of marginally cheaper units. Both brands also raised prices this year, a month apart: Prepay Power +8.8% electricity and +10.6% gas from 1 June 2026 — its first rise in about 3.5 years, after an eight-month winter freeze, adding roughly €168 and €171 to typical bills. Electric Ireland followed with +8% electricity and +7.7% gas from 1 July 2026, its first since October 2022, and left standing charges untouched. Neither rise changed the ranking between them; both simply moved the whole ladder up.
A €20 lifeline and daily balances vs a bill you can forget about
This is Prepay Power’s home ground, and we rate its top-up machinery 8/10 — the best billing score on the prepay side of the market. You top up by app, auto top-up or any Payzone shop, the balance updates through the day, and running dry is cushioned by €20 emergency credit on each fuel plus friendly-credit hours covering evenings, weekends, Christmas, New Year and St Patrick’s Day. The discipline is the product: the house sees energy spend in euro terms daily, and nobody gets a €400 surprise in February. The hard edge is real, though — burn through the emergency credit outside friendly-credit hours and the supply stops until you top up.
Electric Ireland is the opposite temperament: a billed account, direct debit or level pay, an app you might open twice a year, and winter smoothed across twelve payments rather than pre-funded a week at a time. Nothing ever switches itself off — the trade is that a heavy month surfaces as a bigger bill in arrears rather than a faster-draining balance. And the incumbent quietly plays both sides: its Smarter Pay As You Go tops up by Payzone, text or app, but runs on standard unit rates plus a daily PAYG service charge, with no new-customer discount — we have not verified its all-in annual cost this week, so we show a dash rather than a number. Both reviews cover the day-to-day experience in depth.
€50 flat vs €11.25 a month remaining — and how the meter swap works
Both sign you up for 12 months with a 14-day cooling-off period, but the exit doors are shaped differently. Electric Ireland charges a flat €50 per fuel if you leave a fixed-term plan early, and nothing after month 12. Prepay Power’s electricity fee is a countdown: €11.25 for every month (or part-month) left of the initial 12 — up to about €135 if you bolt right after cooling-off, trivial by month 11 — plus a flat €50 on gas. So the worst-case cost of a mistake is nearly three times higher at Prepay Power, and it punishes exactly the people who realise early that prepay is not for them.
The mechanics of leaving Prepay Power for Electric Ireland are less dramatic than people fear. You sign up with the new supplier, hand over your MPRN, and the switch runs like any other — supply never cuts. On Smart Pay there is no hardware to change at all: the ESB Networks smart meter simply stops being vended and starts being billed. On Classic Pay, the keypad unit is Prepay Power’s equipment, and Prepay Power arranges its removal once the switch completes. Before you move: run down or note your top-up balance and ask Prepay Power how the remaining credit is settled, and remember the debt flag runs the other way too — electricity arrears of €225 or more, over 60 days old, can block or delay a switch to bill-pay (a previous tenant’s debt does not follow you; if arrears are the issue, MABS is free and useful).
Neither is a green pick — one at least files the paperwork
If renewables are the deciding factor, this is the wrong matchup — we score Electric Ireland 6.5/10 on green and Prepay Power 4/10, the weakest pairing on any of our energy head-to-heads. Electric Ireland’s standard supply follows its disclosed fuel mix; the specifically “green” plans cost more and rest on Guarantee of Origin certificates, which is accounting-green rather than a separate Irish supply. It is an unremarkable, common arrangement — but it exists, it is documented, and you can choose it.
Prepay Power does not really enter the conversation: it sells budget control, makes no standout renewable claim, and if the source of your units matters to you the only recourse is the supplier fuel-mix disclosure the CRU requires of every licensed supplier. That is not a scandal — it is honest positioning — but it means a prepay household cannot buy even certificate-green supply here. If green is genuinely your first filter, start from best green electricity instead and work back to the billing question afterwards.
Not a false binary — and the habit trap that costs €494 a year
Choose Prepay Power when the constraint is real: a credit check or deposit you cannot clear, a shared or chaotic house where a communal bill dies of neglect, or a genuine need to see energy spend daily and cap it physically. Within that brief it is the best-run specialist — compare it with Pinergy and it wins on polish and on price. Just buy it with open eyes: €2,106 a year for electricity, flat, is the cost of the control, and the €100 welcome credit is one nice month, not a discount.
The habit trap: the dearest customer in this comparison is the one who went prepay years ago out of necessity and never left. If you could pass a credit check today — steady income, no €225+ arrears over 60 days old — staying on Prepay Power costs roughly €494 a year against Electric Ireland’s new-customer deal, and €238 even against its undiscounted standard rate. The meter does not remind you that your circumstances changed. Check once a year whether prepay still describes your life.
Choose Electric Ireland when nothing forces you to prepay: it is €494 cheaper in year one, €238 cheaper even at the loyalty rate, cheaper again on gas, and the €50 exit fee keeps the cost of changing your mind low. And if you like the top-up ritual but want off the specialist pricing, the incumbent’s own Smarter Pay As You Go is the middle path — same Payzone-and-app topping up, standard rates plus a daily service charge, though until we verify its all-in cost it stays a dash in our tables. Not sure either brand fits? Run find your energy, or start from the full ranking.
Which should you choose?
It comes down to cost profile, contract terms, and how you like to deal with a supplier. Use this fast decision frame.
Choose Electric Ireland if
You can set up a direct debit or pay a bill on time, and no switching debt flag (arrears of €225+ more than 60 days overdue) blocks you. You want the lower all-in cost — €1,612 in year one, €1,868 even after the discount lapses — plus gas at €1,499 and a flat €50-per-fuel exit fee. Diary month 12: the incumbent’s loyalty rate is how it earns the discount back.
Check Electric Ireland →
Choose Prepay Power if
A credit check or deposit is the real barrier, or hard spend control is worth a premium to you: top-up by app or Payzone, a €20 emergency-credit buffer, friendly-credit hours, and no bill ever landing. Accept the arithmetic going in — €2,106 a year for electricity, €494 more than Electric Ireland’s year-one deal — and treat it as a stage, not a home.
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