Selling Electricity Back to the Grid in Ireland 2026: CEG Rates, Tax & Process

Selling electricity back to the grid in Ireland in 2026 is straightforward, well-paid by international standards, and tax-friendly — but it still confuses homeowners because the supplier rates move every few months and the official paperwork (NC6 form, smart meter activation, Clean Export Guarantee registration) sits across three different bodies. This is the full 2026 picture: what the Clean Export Guarantee (CEG) actually pays right now, who is paying what, how the €400-a-year tax exemption works, the smart meter and ESB Networks process, and what you can realistically expect to earn from a 4 kWp solar array exporting in Ireland this year.

How the Clean Export Guarantee actually works in 2026

The Clean Export Guarantee (CEG) is the Microgeneration Support Scheme’s payment mechanism for surplus solar (and other renewable) electricity exported from a domestic or small-commercial property back into the ESB Networks distribution grid. It went live on 15 July 2022 and has been the headline export tariff ever since. It is not a feed-in tariff: there is no fixed government-set rate. Each electricity supplier sets their own CEG rate and competes for export business in the same way they compete for import customers.

Three things you need to be eligible to receive CEG payments:

• A registered microgeneration system, typically rooftop solar PV, certified and notified to ESB Networks by your installer at the time of install (the NC6 form).
• A smart meter installed by ESB Networks at your MPRN. The smart meter records both import and export half-hourly. If you have an older non-communicating digital meter, ESB Networks will swap it for free once they receive your installer’s NC6.
• An active CEG-paying electricity supply contract with one of the participating electricity retailers. You can be on a different supplier for import and export (most homeowners use the same supplier for simplicity).

The supplier reads your half-hourly export data from ESB Networks, applies their published CEG rate, and credits it against your electricity bill — usually quarterly, sometimes paid out as a separate cash transfer if your export earnings exceed your import bill in a given period.

2026 CEG rates by supplier — who pays what

Current published rates as of June 2026. Rates have stabilised after a turbulent 2023–2024 period when wholesale gas prices were spiking; the 2026 spread is much narrower and most suppliers sit in the 20–23 c/kWh range. Check the supplier’s website at the point of contract because all of these are reviewed twice a year.

Supplier	2026 CEG rate (c/kWh)	Notes
Electric Ireland	24.0	Top of the market on standard residential tariff; pays as bill credit quarterly.
Bord Gáis Energy	21.0	Steady mid-table; offers a battery-storage bonus on some smart-tariff bundles.
SSE Airtricity	20.0	Lower CEG but competitive smart-tariff import rates pair well with batteries.
Energia	22.0	Strong all-rounder for the solar+EV household.
Pinergy	22.5	Smart-tariff specialist; offers half-hourly settlement on selected plans.
Flogas	21.0	Reliable mid-table; useful for households on existing gas accounts.
PrePay Power	20.0	CEG paid as account credit on pre-pay metered accounts.
Yuno Energy	18.0	Lowest mainstream CEG; balanced by aggressive import pricing for low-use households.
Community Power Co-op	25.0	Highest published rate. Member-owned co-op; smaller customer base, geographic eligibility limits.

The Electric Ireland 24 c rate has been the headline number for most of 2025 and into 2026, which is why it shows up in payback calculators and on national TV ads. It is a strong rate by European standards (UK SEG tariffs typically pay 5–15 p, German EEG fixed-rate solar pays around 8 c). But on overall solar economics, the import tariff matters more than the CEG rate — do not switch supplier purely for a 1–2 c CEG difference if your import tariff goes up by 3 c. The right question to ask is “what is my combined annual bill including CEG credits, on each plan?”

The €400 tax exemption and how to claim it

Income from selling solar electricity to the grid is taxable in principle — it would otherwise sit alongside rental income, share dividends, and small-trading income in the Revenue self-assessment. To remove that friction for ordinary homeowners, the Finance Act 2021 introduced section 216D of the Taxes Consolidation Act 1997, exempting up to a fixed annual amount of CEG-style income from tax.

The current 2026 exemption ceiling: €400 per household per year. The exemption was raised from €200 to €400 in the 2024 Budget and Budget 2026 extended it again, this time to 31 December 2027. The realistic numbers below put almost every typical Irish solar household inside the threshold.

• If your total annual CEG income is under €400, you owe nothing and have nothing to declare.
• If your total CEG income exceeds €400, only the excess is taxable. So a household earning €540 of CEG declares €140 of taxable income.
• The exemption applies per household, not per panel or system. A house with a 6 kWp array still has one €400 ceiling.
• For PAYE-only households, declare excess CEG income through Revenue’s myAccount under Form 12. For self-assessed taxpayers (sole traders, landlords), include it in Form 11 in the “Other income” section.

The practical effect: virtually no domestic solar household exporting from a 4 kWp array crosses the threshold. Most households earn €300–€480 a year in CEG, and the few that cross the line typically owe tax on €50–€120 of overage. The exemption was a deliberate policy step to keep CEG simple for ordinary households.

The microgeneration capacity limits (and why they matter)

The microgeneration scheme has two capacity ceilings, both raised in late 2024 from earlier lower limits:

• Single-phase connection: 6 kW inverter export capacity. Most Irish domestic homes have single-phase supply.
• Three-phase connection: 11 kW inverter export capacity. Common on farms, larger detached houses, and small commercial sites.

The limit is set by the inverter export rating, not the panel array DC rating. You can install 7–8 kWp of panels on a single-phase property as long as the inverter clips export at 6 kW — this is increasingly common in 2026 because panel oversizing relative to inverter capacity improves morning and evening output. Just confirm with your installer that the inverter export limit is set correctly in the configuration; an unconfigured 8 kW inverter on single-phase will fail the ESB inspection and require a return visit.

Above 6 kW single-phase (or 11 kW three-phase), the system moves out of the standard NC6 microgeneration regime into the NC7 mini-generation regime, which has its own application process and may incur ESB Networks connection charges. Talk to your installer about which form applies if you are sizing above 6 kWp on a domestic property.

The smart meter and NC6 process: end to end

This is the part most homeowners find confusing. The full sequence from solar install completion to your first CEG payment runs as follows:

1. Installer completes the install and signs off the standard MCS/SEAI commissioning forms. This is the point at which the system is generating but not yet metered for export.
2. Installer files the NC6 form with ESB Networks within 20 working days of energisation. The NC6 confirms the technical spec of your inverter and grid-tie configuration.
3. ESB Networks acknowledges the NC6 typically within 5–10 working days and updates your MPRN record to flag “exporting microgeneration”.
4. Smart meter swap, if required. If you do not already have a smart meter, ESB Networks schedules a free swap, usually 2–6 weeks after NC6 acceptance. The swap takes 20–40 minutes and requires no internal access to the house. If you already have a smart meter, this step is automatic.
5. You sign up to a CEG tariff with your chosen supplier — existing supplier is simplest, but you can switch. Provide your MPRN; the supplier confirms eligibility.
6. First CEG credit appears on your next quarterly bill after the smart meter export channel is live. ESB Networks data flows take 4–6 weeks to populate the supplier’s billing system, so plan for 8–14 weeks total from install to first credit.

If you switch supplier later, your CEG eligibility moves with the MPRN and there is no need to refile the NC6. ESB Networks holds the export record at MPRN level.

How much can you actually earn? Three realistic 2026 scenarios

Scenario A: 4 kWp Dublin semi-detached, no battery

Standard 4 kWp array on a south-facing roof, 9 panels, 5 kW hybrid inverter, no battery. Annual yield 3,720 kWh. Self-consumption 32% (no battery means a lot of midday surplus). Export 2,530 kWh. At Electric Ireland’s 24 c/kWh CEG rate: €607 annual export income. After the €400 exemption, taxable balance €207; at the 20% standard rate that is €41 of income tax due (or €83 at 40% if the household is a higher-rate earner). Net CEG income after tax: €566–€524.

Scenario B: 4 kWp Galway 3-bed with 5 kWh battery

Same array, same yield (assume similar 3,720 kWh). 5 kWh battery shifts midday surplus into evening. Self-consumption climbs to 60%. Export drops to 1,488 kWh. At Energia’s 22 c/kWh: €327 annual export income. Below the €400 exemption: zero tax, €327 net. The battery itself adds ~€430 of import-displacement savings on top, so total household solar benefit climbs even though CEG income is lower. This is the classic battery trade-off: less export income, more self-consumption savings.

Scenario C: 6 kWp Cork detached with EV and battery

Larger 6 kWp array, 5 kWh battery, EV charged overnight on smart night tariff. Annual yield 5,580 kWh. Self-consumption 55% (battery time-shifts evening load, EV draws minimal daytime solar because it charges overnight). Export 2,511 kWh. At Pinergy’s 22.5 c/kWh: €565 annual export income. After €400 exemption, taxable balance €165; tax due €33 (20%) or €66 (40%). Net CEG: €532–€499. The EV and battery push total household benefit (CEG + import displacement + EV diesel offset) above €3,500/yr.

Should you switch supplier purely for a higher CEG rate?

Almost never. The headline number to compare is total annual electricity cost, with CEG credit netted against import charges:

Annual import cost = (annual import kWh × import rate) + standing charge + PSO levy
Annual CEG credit = annual export kWh × supplier CEG rate
Net annual electricity cost = import cost − CEG credit

An example: a household importing 4,200 kWh on a 36 c/kWh tariff has an import cost of €1,512. Exporting 1,800 kWh at a 24 c CEG rate gives a €432 credit. Net cost: €1,080.

If a different supplier offers a 34 c import tariff and a 22 c CEG, the same household would have a net cost of €1,428 − €396 = €1,032 — €48 a year cheaper, despite the lower CEG rate. The import tariff difference (2 c on 4,200 kWh = €84) outweighed the CEG difference (2 c on 1,800 kWh = €36).

The exception: very large exporters (oversized 6 kWp systems with no battery, light daytime occupancy) where annual export can exceed 2,500 kWh. For those households, a single c/kWh on CEG translates to €25+ a year, and a strong CEG rate is worth a higher import tariff.

Battery storage vs grid export: which wins economically?

Almost always, self-consumption beats export. The maths is simple:

• Every kWh you consume yourself avoids paying ~36 c/kWh on the import tariff.
• Every kWh you export earns ~20–25 c/kWh on the CEG rate.
• That is a ~13–16 c/kWh value gap per shifted kWh.

A 5 kWh battery typically shifts 1,500–1,800 kWh a year from export to self-consumption. At a 14 c/kWh value gap, that is €210–€252 of additional annual savings beyond what the same solar array without a battery would deliver. Over 10 years, the battery is worth €2,100–€2,520 of import displacement.

The battery only beats “no battery” once you account for capital cost. A 5 kWh battery installed retail in 2026 runs €3,500–€4,500. So pure-economic payback on the battery alone is 14–20 years — longer than the panels themselves, and longer than most battery manufacturer warranties (10 years cycling, 12 years calendar). Batteries make sense for households who value resilience, evening time-shifting on dynamic tariffs, or who plan to add an EV soon. They are harder to justify on CEG-rate arbitrage alone.

The exception is dynamic time-of-use tariffs — some 2026 smart-tariff plans pay 8–12 c more for evening export than for off-peak export. A battery on those plans can earn an additional €100–€180 a year of export-arbitrage income on top of self-consumption savings, shortening battery payback materially. Ask your supplier whether they offer a time-of-use CEG variant.

Three common CEG mistakes to avoid

1. Not following up the NC6 if your first quarterly bill has no CEG credit. Roughly 1 in 5 NC6 forms get held up at ESB Networks for missing information. If your first quarterly bill after the smart meter swap still shows no export, ring your supplier’s solar team and ask them to chase the MPRN export flag. The fix is usually administrative.
2. Locking into a 12-month fixed import rate without a CEG escape clause. CEG rates moved 6–8 c/kWh during 2023–2024. Most major suppliers now allow CEG-rate review without breaking the import contract. Confirm before signing.
3. Oversizing without budget for self-consumption infrastructure. Going 6 kWp without a battery, hot water diverter, or EV means you are exporting 60%+ of generation at 20–25 c when you could be saving 36 c on import. Match system size to your realistic self-consumption capacity.

Commercial and farm-scale export: a different regime

Above the 6 kW (single-phase) / 11 kW (three-phase) microgeneration limit, sites move into the “Small-scale Generation Scheme” (SSG) for systems up to 50 kW, or the mini-generation NC7 process. Key differences:

• Export rates are still supplier-set CEG but typically 14–18 c/kWh for commercial — lower than residential because commercial supply contracts are negotiated separately.
• The €400 tax exemption does not apply — commercial export income is fully taxable as trading or rental income depending on the entity.
• TAMS 3 grant funding (60% for farms) applies to systems up to 60 kWp on registered agricultural holdings, with simplified pre-approval through DAFM’s online portal.
• Connection charges may apply on three-phase upgrades or where the local 10 kV network is constrained.

For commercial and farm-scale solar planning, see the detailed 100 kW solar system cost guide and the commercial solar Ireland guide.

CEG and grid export FAQ

Do I need to register separately for CEG? No. Once your installer files the NC6 with ESB Networks and you sign up to a CEG tariff with your supplier, payments flow automatically. There is no Revenue or SEAI registration for CEG itself.

Is the CEG payment guaranteed? The mechanism is statutory under the Microgeneration Support Scheme. Specific rates are not — each supplier sets and reviews them. You always have the option to switch suppliers to capture a better rate.

Can I sell electricity if I do not have a smart meter? ESB Networks installs one for free as part of the NC6 process if you do not already have one. The smart meter is required for half-hourly export measurement.

Will my supplier still pay CEG if I owe them on the import bill? Yes — CEG is credited against your bill. If your CEG exceeds your import for a billing period, the excess carries forward as a credit balance or, on some plans, can be paid out as a bank transfer on request.

How do I switch CEG suppliers without disrupting my system? You switch the same way you would switch import: contact the new supplier with your MPRN and they handle the changeover. Your inverter and meter do not change. There is no interruption to the export feed.

Can I export to the grid from a battery? Yes, if your hybrid inverter is configured for it. The CEG payment is identical — ESB Networks measures total export at the meter and does not care whether it came from panels or battery. Most homeowners do not export from the battery because the self-consumption value is higher.

Is there a cap on how much I can export per year? The microgeneration framework limits the inverter capacity (6 kW single-phase, 11 kW three-phase) but does not cap annual kWh export. A 6 kW inverter exporting flat-out 8 hours a day for 6 months a year could theoretically export 8,000+ kWh; in practice 2,500–3,500 kWh is typical from a domestic 6 kWp install.

Does the SEAI grant affect my CEG eligibility? No. The €1,800 SEAI Solar PV Grant and the CEG export tariff are independent. Almost every grant-funded install qualifies for CEG by default.

How is the €400 tax exemption calculated — per person or per household? Per household. The exemption attaches to the MPRN, not to individual residents.

I have a holiday home. Can I claim CEG? Yes — CEG eligibility is not restricted to principal private residence. (Note: the SEAI Solar PV Grant is restricted to PPR. CEG is not.)

The bottom line

Selling electricity back to the grid in Ireland in 2026 is a mature, predictable income stream worth €300–€500 a year for a typical 4 kWp domestic system — almost always inside the €400 tax exemption, simple to set up if your installer files the NC6 properly, and slightly more rewarding if you shop around for the best supplier-tariff combination rather than just chasing headline CEG rates. For most households, the right priorities are: get a smart meter active, pick a supplier whose total bill (import minus CEG) is lowest for your usage shape, and remember that every kWh of self-consumption beats the same kWh exported by 12–15 c. Batteries, hot-water diverters and time-of-use tariffs amplify that gap. Pure-export optimisation is a sub-optimal solar strategy; export is a backstop, not the headline.