Work through these in order. One: check the letter beside the meter read on your bill. A means Electric Ireland or your supplier billed an actual ESB Networks reading, C means you sent the reading in, and E means the whole bill is an estimate. A run of E bills ends in one large catch-up bill. Two: subtract the fixed charges. On Electric Ireland's standard urban rate that is €269.87 a year of standing charge and PSO levy before you use a single unit, so cutting your usage never cuts your bill by the same proportion. Three: prices rose. Electric Ireland put unit rates up 9.5% on 1 July 2026, its first increase since October 2022. Four: check your plan matches your meter. Five: check for a new load, because an electric car at 15,000 km a year adds roughly 2,100 kWh, which is half of what the regulator counts as an entire household's annual usage. Six: find the appliance, and it is almost always something that heats water.
All the rates on this page were read from the suppliers' and regulators' own published pages on 18 August 2026 and include VAT at 9% unless stated otherwise. Where a figure is our own arithmetic rather than a published number, it says so.
If you want to know what a normal bill looks like before diagnosing your own, start with our breakdown of the average electricity bill in Ireland. This page is about the other question, the one people actually type at 11pm with a bill in front of them.
Step 1: Check the Letter Beside the Meter Read
This is the first thing to check and the most commonly missed. Citizens Information sets out the rule plainly: your bill must be clearly marked with how the reading was obtained.
| Code | What it means | What it means for you |
|---|---|---|
| A | Actual meter read by ESB Networks | The bill reflects real usage |
| C | A read you submitted yourself | The bill reflects real usage |
| E | An estimated reading | Nobody measured anything. The bill is a guess. |
ESB Networks physically reads a standard meter four times a year. Every bill in between is estimated. That is normal and it usually evens out, but two things go wrong with it.
The first is a run of low estimates. If the estimate has been under-reading your real usage for eight or ten months, the next actual reading catches up all at once, and the catch-up lands on a single bill. That bill is not a price rise or a faulty meter. It is the arrears of a year of guesses arriving together.
The second is the opposite. If you moved to a smaller household, went away for months, or replaced an old freezer, the estimate keeps billing you for the house you used to be. The fix is the same in both directions and it takes two minutes: read the meter and send the figure to your supplier, or submit it to ESB Networks directly.
You are probably on a smart meter plan. Electric Ireland explains that once you agree to share half-hourly data, the meter takes 48 readings a day, and because that volume cannot be printed on a bill, ESB Networks sends the supplier a single amalgamated consumption figure instead. Individual reads stop appearing. That removes the estimated-bill problem entirely, but it also removes the easy check, so you have to go to the data instead. See step 6.
Step 2: Take Out the Part That Has Nothing to Do With Usage
A chunk of every Irish electricity bill is fixed. It does not move when you switch off lights, and no discount touches it.
| Charge | Excluding VAT | Including VAT at 9% |
|---|---|---|
| Annual standing charge | €230.06 | €250.77 |
| Annual PSO levy | €17.52 | €19.10 |
| Fixed charges before any electricity | €247.58 | €269.87 |
| Unit rate | 34.90c per kWh | 38.04c per kWh |
| Usage the regulator assumes | 4,200 kWh a year | |
| Estimated annual bill | €1,867.58 | |
On a two-monthly bill, €44.98 of it is standing charge and PSO before a kettle is boiled. Across the year the fixed part is just over 14% of the €1,867.58 estimated annual bill, by our calculation from the figures above.
This is why "we cut back and the bill barely moved" is such a common complaint. Halve your usage from 4,200 to 2,100 kWh on that tariff and the annual bill goes from €1,867.58 to €1,068.72, a fall of 43% rather than 50%. That is our own arithmetic using Electric Ireland's published rates. The harder you economise, the larger the fixed charges loom as a share of what is left.
Rural customers pay more of it. ESB Networks classifies urban meters as DG1 and rural as DG2, and the rural standing charge is higher. Your bill states which you are.
Step 3: Prices Went Up on 1 July 2026
If your bill rose in July or August and you changed nothing, this is probably why. Electric Ireland announced on 28 May 2026 that residential electricity prices would rise 8% from 1 July, its first increase since October 2022. The breakdown it published matters more than the headline:
- Unit rates rose 9.5%
- The standing charge did not change
- The PSO levy did not change, at €1.46 a month excluding VAT
- VAT stayed at the reduced 9% rate
The headline 8% and the 9.5% unit increase are both true, and the gap between them is the point. Electric Ireland's 8% is measured on the regulator's 4,200 kWh household, where the unchanged standing charge and PSO dilute the unit rise. It works out at €138.26 a year for that household.
Working backwards from Electric Ireland's own €138.26 figure, the unit rate went from about 31.88c to 34.90c excluding VAT, an increase of 3.02c per unit. That reconciles with the 9.5% the company published. Apply it to a household using 8,000 kWh rather than 4,200 and the annual increase is roughly €263, or 8.6% of the bill rather than 8.0%. If your house has an electric car, a heat pump or electric heating, the "average household" figure in the news coverage understated your increase by about half.
We cover the change itself, and how it landed on each part of the bill, in our guide to the Electric Ireland price increase 2026. For where every supplier sits now, see electricity prices in Ireland.
Step 4: Are You on the Wrong Plan for Your Meter?
Irish suppliers sell the same electricity at very different rates depending on when you use it. Electric Ireland alone sells residential electricity at anything from 29.81c to 38.65c a unit. A plan that suits an EV household is an expensive mistake for a house with a kettle and a washing machine.
Two ways this goes wrong.
The discount expired. Most Irish new-customer discounts run for a 12-month contract term. When it ends, the discount comes off and the rate reverts, with no change in your behaviour at all. A bill that jumped by roughly the size of your old discount, exactly twelve months after you switched, has a very short list of possible causes.
You are on a time-of-use plan without a time-of-use lifestyle. Night and boost plans buy you a cheap overnight rate by charging you a higher daytime rate. If your usage does not actually move overnight, you pay the penalty and collect none of the benefit.
Home Electric+ Night Boost charges 37.60c during the day (08:00 to 23:00) and 18.54c at night (23:00 to 08:00), including VAT. Compare that with Electric Ireland's cheapest flat smart plan at 29.81c a unit, and the break-even is 40.9% of your annual usage falling between 11pm and 8am. If a third of that night usage lands inside the 2am to 4am boost window at 10.88c, break-even improves to about 36%.
For context, the regulator tells suppliers to assume a day/night meter household uses 38% of its electricity at night. So Night Boost needs a household more nocturnal than the regulator's own assumption before it beats a plain cheap flat rate. An electric car or storage heating clears that. A normal house does not. Our figures are calculated from Electric Ireland's published rates; the comparison against the undiscounted standard rate, which produces a lower break-even, is in our Electric Ireland rates and plans guide.
The night rate maths in general, including which appliances are worth moving, is in our guide to night rate electricity in Ireland. If you want to move supplier rather than plan, start with the cheapest electricity supplier in Ireland.
Step 5: Something New Is Drawing Power
A bill that doubled rarely doubled because of habits. Something big joined the house.
An electric car
SEAI states that AC charging at 7kW adds about 100 km of range in roughly two hours. That works out at around 14 kWh at the plug per 100 km, which is the arithmetic we use below. Real consumption varies with the car, the weather and charging losses, so treat it as an order of magnitude rather than a quote.
| Annual mileage | Electricity used | At the standard 38.04c day rate | At a 16.83c night rate |
|---|---|---|---|
| 10,000 km | 1,400 kWh | €532.56 | €235.62 |
| 15,000 km | 2,100 kWh | €798.84 | €353.43 |
| 20,000 km | 2,800 kWh | €1,065.12 | €471.24 |
At 15,000 km the car alone uses half of what the regulator counts as an entire household's annual electricity. Charged on a day rate instead of a night rate it costs €445 a year more for identical driving. This is the single most common reason an Irish bill doubles, and it is also the easiest to fix, because the car has a charging timer built into it.
If you have panels as well, the sums change again. See charging an electric car with solar panels.
A heat pump
A heat pump does not usually make energy more expensive. It moves the cost from one bill to another. Your entire home heating demand, which used to arrive as oil deliveries or a gas bill, now arrives on the electricity bill instead. Comparing this year's electricity bill to last year's is the wrong comparison. Compare the total energy spend across all fuels, including the oil you are no longer buying. Grant and cost detail is in our heat pump grant guide.
Electric heating brought in for one cold spell
Plug-in convector and fan heaters are typically 2 kW. Two of them running four hours a day for six weeks is about 672 kWh, or €256 at the standard rate, on our arithmetic. Heaters bought during a cold snap have a way of never going back into the attic.
Step 6: Find the Appliance
SEAI's rule of thumb is the fastest triage there is: if it heats up, and especially if it heats up quickly, it is a big user of electricity. Lighting, televisions and phone chargers are noise. Water heating is signal.
Electric Ireland publishes power ratings and running costs for household appliances. There is a catch in the small print, and it is worth knowing about before you use their numbers.
The footnote under every one of those tables reads that the costs are "based on Electric Ireland's standard 24-hour rate of €0.3475 per kWh (non-smart), including VAT as of November 2024". The standard 24-hour rate today is €0.3804. So every running cost the company publishes is roughly 9.5% below what a standard-rate customer actually pays, which is precisely the size of the unit-rate increase it applied on 1 July 2026. The power ratings are still good. The euro amounts are two price changes out of date.
| Appliance | Rating | Cost per hour as Electric Ireland publishes it | Cost per hour at today's rate |
|---|---|---|---|
| Electric shower | 9 kW | €3.13 | €3.42 |
| Immersion heater | 3 kW | €1.04 | €1.14 |
| Tumble dryer | 2.5 kW | 87c | 95c |
| Washing machine | 2.1 kW | 73c | 80c |
| Iron | 1.5 kW | 52c | 57c |
| Vacuum cleaner | 1 kW | 35c | 38c |
| Chest freezer, E rated | 200 kWh a year | €69.50 a year | €76.08 a year |
Electric Ireland's own caveat applies to the middle two columns and to ours: these assume an hour of continuous use at the full rating. A washing machine draws its full 2.1 kW only while it heats the water, so the real cost of a cycle is well under 80c. An immersion heater and an electric shower, on the other hand, are resistive elements that really do pull their full rating the whole time they are on. Which is why the hot water tank, not the tumble dryer, is usually the answer.
| Habit | Electricity a year | Cost a year | Share of the 4,200 kWh benchmark |
|---|---|---|---|
| Immersion on 1 hour a day | 1,095 kWh | €416.54 | 26% |
| 10-minute electric shower daily | 548 kWh | €208.27 | 13% |
| Tumble dryer, 4 hours a week | 520 kWh | €197.81 | 12% |
| Old E-rated chest freezer | 200 kWh | €76.08 | 5% |
An immersion heater left on an hour a day is a quarter of an average household's entire annual electricity use, from one switch. Electric Ireland's own advice on it is blunt: put it on a timer and do not leave it on. It also recommends setting the hot water thermostat between 60°C and 65°C, living areas to around 20°C, the fridge to 2–3°C and the freezer to about −15°C, and notes that dropping a room by 1°C can cut heating costs by up to 10%.
Stop guessing and read your own data
If you have a smart meter, you do not have to infer any of this. ESB Networks gives you free access to your own usage through an online account, and the detail available is far beyond anything on a bill:
- Charts by day, week, month or year, in kW or kWh
- A breakdown across day, night and peak periods
- A harmonised downloadable file, the HDF, holding up to two years of half-hourly readings, which follows you even if you changed supplier during that period
- Data appears within 36 to 48 hours, and only you can see it
Open the half-hourly data on a day you were out of the house. Whatever is still drawing power at 3am is your baseline, and multiplying that half-hourly figure by 17,520 gives you the annual cost of your house doing nothing. Then look at the evening of a day the bill felt high. The spike has a shape, and a 9 kW shower looks nothing like a 200 W fridge cycling. You will need your MPRN and a mobile number to register.
Electric Ireland smart plan customers can also download up to two years of consumption data from their supplier account. SEAI suggests borrowing a plug-in power meter from a library energy saving kit, available in over 160 libraries, if you want to measure one suspect appliance directly.
What Is Coming on 1 October 2026
Two changes land together, and only one of them was widely reported. On 29 July 2026 the Commission for Regulation of Utilities approved the 2026/27 PSO levy at €41.48 million, down from €125.38 million, cutting the domestic monthly charge from €1.46 to €0.51, a 66% reduction. The same decision approved network charges the CRU expects to add about €41.25 a year, or €3.44 a month, to a typical domestic bill from the same date.
Netted off, that is roughly €2.50 a month more before VAT, not less. If you saw the PSO headline and expected your October bill to fall, it will not. Our page on the PSO levy covers how the charge works and why solar households pay it too.
If the Problem Is Paying It, Not Understanding It
Supports exist and they are not discretionary favours.
- Suppliers must offer an alternative payment plan if you are in genuine financial difficulty, and must make at least four attempts to contact you before disconnecting
- Customers with payment difficulties cannot be disconnected during the winter months
- Registered priority services customers, those critically dependent on electrically powered assistive devices, cannot be disconnected at any time
- The Household Benefits package includes an electricity allowance if you are over 70, and some people under 70 qualify
- Fuel Allowance and the Additional Needs Payment are separate schemes with their own conditions
- MABS gives free confidential money advice
Talk to the supplier before the arrears build. Engagement is what keeps you inside the Energy Engage Code.
The Part No Tariff Switch Can Fix
Everything above is about paying less per unit, or buying fewer units by going without. There is a third option, which is to stop buying some of the units at all.
Every kilowatt-hour a solar array produces and you use in the house is a unit you do not buy at 38.04c. Every unit you export earns you the export rate instead, currently 19.5c per kWh from Electric Ireland. That is why self-consumption is worth roughly twice as much as export, and why the household appliances worth shifting to the middle of the day are the same heavy ones listed above. An immersion diverter, which sends surplus solar into the hot water tank instead of the grid, is the classic Irish answer to the €416-a-year immersion problem.
Whether that stacks up for your house depends on your roof, your usage and what the install costs after the SEAI grant. Run your own numbers with our solar panel cost calculator, or read the honest version of the payback question in are solar panels worth it in Ireland. For the hardware, see solar power diverters and home battery storage.
The Checklist, in One Place
- Find the read code on the bill. If it is E, submit an actual reading today.
- Subtract standing charge and PSO. On Electric Ireland's standard urban rate that is €269.87 a year that usage cuts cannot touch.
- Compare against a bill from before 1 July 2026. Unit rates rose 9.5% on that date.
- Check whether your 12-month discount expired, and whether your plan's cheap window matches when you actually use electricity.
- List anything new: a car, a heat pump, a plug-in heater, a hot tub, a new occupant working from home.
- Open your ESB Networks half-hourly data and find the shape of the spike.
Stop renting your electricity at 38c a unit
Switching supplier changes the price of a unit. Solar changes how many you buy. Get free, no-obligation quotes from SEAI-registered installers in your county.
Get a Solar QuoteFrequently Asked Questions
A sudden jump usually has one of four causes. An estimated bill catching up with an actual reading, which you can spot from the E code beside the meter read. The 1 July 2026 price increase, which raised Electric Ireland unit rates by 9.5%. A 12-month new-customer discount expiring, which reverts your rate with no change in behaviour. Or a new load in the house, most often an electric car charged on the day rate. Gradual increases are more likely to be seasonal, since Irish electricity use rises through the winter with lighting, heating and hot water.
It states how the meter reading behind the bill was obtained. A is an actual reading taken by ESB Networks, C is a reading you submitted yourself, and E is an estimate. ESB Networks reads a standard meter four times a year and the bills in between are estimated. Citizens Information advises checking that you are not getting too many estimated bills in a row, because that ends in a large catch-up bill once an actual reading is taken. You can submit your own reading to your supplier or to ESB Networks at any time to stop that happening.
On Electric Ireland's standard urban 24-hour tariff, the annual standing charge is €250.77 including VAT and the PSO levy is €19.10, so €269.87 a year is payable regardless of usage. That is €44.98 on every two-monthly bill and, by our calculation, 14.4% of the €1,867.58 estimated annual bill at the regulator's 4,200 kWh household. Rural meters, classified DG2 by ESB Networks, pay a higher standing charge than urban DG1 meters. No supplier discount applies to the standing charge or the PSO levy, only to unit rates.
Two reasons combine. First, the fixed charges do not fall with usage, so a cut in consumption never produces a proportional cut in the bill. On Electric Ireland's standard rate, halving usage from 4,200 to 2,100 kWh cuts the annual bill by 43%, not 50%, on our arithmetic from their published rates. Second, the unit price itself rose 9.5% on 1 July 2026. A household that cut usage by 5% over that period would still see a higher bill.
Electric Ireland rates a domestic immersion at 3 kW. At the current standard 24-hour rate of 38.04c per kWh including VAT, that is €1.14 an hour, which is our own calculation. An hour a day for a year is 1,095 kWh and €416.54, about a quarter of the electricity the regulator assumes an entire household uses in a year. Electric Ireland's published figure of €1.04 an hour is priced at its November 2024 rate of 34.75c and is now out of date. Put the immersion on a timer, and if you have solar panels, a diverter will heat the tank from surplus generation instead.
SEAI states that AC charging at 7kW adds roughly 100 km of range in about two hours, which implies around 14 kWh at the plug per 100 km. On that basis, 15,000 km a year is about 2,100 kWh, costing €798.84 at Electric Ireland's standard 38.04c rate or €353.43 at a 16.83c night rate. That is our own arithmetic and real consumption varies with the car, the weather and charging losses. The practical point is that the same driving costs about €445 a year more on a day rate than a night rate, and every EV has a charging timer to fix that.
Only if a genuine share of your electricity is used overnight. Night plans buy a cheap overnight rate by charging more during the day. Comparing Electric Ireland's Home Electric+ Night Boost at 37.60c day and 18.54c night against its cheapest flat smart plan at 29.81c, we calculate you need 40.9% of annual usage between 11pm and 8am to break even, or about 36% if a third of that lands in the 2am to 4am boost window. The regulator tells suppliers to assume a day/night household uses 38% at night, so Night Boost needs a household more nocturnal than the regulator's own benchmark. Households with an EV, storage heating or a battery clear it. Most do not.
If you have a smart meter, register for an ESB Networks online account. You get charts of your own usage by day, week, month or year, split by day, night and peak, plus a harmonised downloadable file holding up to two years of half-hourly readings that stays with you even if you switched supplier. Data appears within 36 to 48 hours and only you can access it. You will need your MPRN and a mobile number. For a single suspect appliance, SEAI points to plug-in power meters, available to borrow in energy saving kits from over 160 libraries in Ireland.
No, not on its own. The CRU decision of 29 July 2026 cuts the domestic PSO levy 66%, from €1.46 to €0.51 a month, from 1 October 2026. The same decision approved network charges the CRU expects to add about €3.44 a month, or €41.25 a year, to a typical domestic bill from the same date. Netted off, that is roughly €2.50 a month more before VAT. The PSO cut is real, but it sits inside a larger increase.
Sources: All figures read from the following pages on 18 August 2026. Bill anatomy, the 4,200 kWh regulator benchmark, meter classifications and the 62/38 day-night assumption from Electric Ireland's estimated annual bill help page. Plan rates from Electric Ireland's new customer price plans and smart meter plans. The July 2026 increase from Electric Ireland's price change announcement of 28 May 2026. Appliance ratings and the 34.75c footnote from Electric Ireland's Know Your Energy hub and its bathroom and utility room advice pages. Read codes, meter reading frequency, the VAT extension to 31 December 2030 and the customer supports from Citizens Information — Paying your electricity bills. Smart meter data access from ESB Networks. The running cost formula, the heats-up rule of thumb, library energy saving kits and the 7kW charging rate from SEAI's be energy smart, appliance electricity and EV charging pages. October 2026 PSO and network charges from the CRU decision of 29 July 2026. Break-even points, annual habit costs, EV charging costs and the restated appliance costs at today's rate are our own arithmetic from those published figures, with the assumptions stated beside each.
Published: 18 August 2026. Author: Neil Russell. Rates change and every house is different; check the figures against your own bill before acting on them.