Clean export guarantee Ireland explained means understanding how households may be paid for surplus renewable electricity sent to the grid. The payment is separate from an SEAI solar PV grant, and the rate, supplier terms and eligibility conditions should be checked before installing panels or changing electricity arrangements. This guide explains how the scheme generally works, how it differs from grant support, what a typical solar export calculation involves, and where planning permission, meters and tax questions fit in. Rules and payment terms can change, so confirm current information with your electricity supplier, SEAI and other official sources.
What the clean export guarantee means
The Clean Export Guarantee, often shortened to CEG, is an arrangement under which an electricity supplier pays an eligible customer for renewable electricity exported from their property to the public grid. For a home with solar photovoltaic panels, export usually happens when generation is higher than immediate household use. For example, panels may produce more electricity than a home needs during a bright afternoon, allowing the surplus to flow through the electricity meter to the grid.
The payment is not the same as selling all of the electricity generated by the panels. A household normally uses some solar power directly, which can reduce electricity bought from the supplier, and only the measured surplus is considered for export payment. This means the financial result depends on panel output, household usage patterns, the meter installed, the supplier's terms and the rate available at the relevant time.
CEG is a supplier payment rather than an SEAI grant, so SEAI does not normally calculate the amount paid for each exported unit or guarantee a particular rate. The supplier handles its own customer account and payment process, while SEAI administers certain energy supports and publishes relevant guidance. A homeowner should therefore check both the current SEAI information and the chosen supplier's CEG terms instead of treating a grant quotation as an export-income promise.
How solar export payments are usually calculated
A simple way to understand the calculation is to separate generation, self-consumption and export. Suppose a system produces electricity during a month and the home uses part of that electricity immediately; the remainder may be exported. The export payment is generally based on the measured exported amount multiplied by the supplier's applicable rate, subject to that supplier's rules, account status, meter data and any limits or conditions in the offer.
Actual export can be much lower than total panel production because solar generation and household demand do not always occur at the same time. A home occupied during the day may use more of its generation directly, while an empty home may export more. Batteries, immersion diverters, electric vehicle charging and heat pumps can also change the balance by using surplus power on site, although their costs and suitability need to be assessed separately rather than assumed to improve every installation.
The key variables are exported units, the supplier rate and the billing period. A quoted annual estimate should be treated as a scenario, not a guaranteed return, because weather, shading, system performance, occupancy and future supplier terms can all change the result. Ask for the assumptions behind any forecast, including expected annual generation, the estimated self-use percentage, the assumed export rate and whether the figures exclude maintenance, finance or equipment costs.
How to qualify and receive the payment
A household will generally need a renewable electricity system that meets the relevant technical and connection requirements, together with an electricity account and meter arrangement that allows export to be identified. Solar PV is the most common domestic example, but the precise scope of an offer depends on current rules and the supplier. The property may also need an approved connection and suitable documentation before export payments can be applied.
The first practical step is to ask the electricity supplier how it recognises exported electricity and whether the home has the required meter. A smart meter may provide the interval data needed to distinguish imported and exported electricity, but the supplier should confirm the position for the individual account. Installation of a meter does not automatically mean that a payment has been activated; the customer may still need to register, submit details or accept the supplier's terms.
Check the supplier's eligibility, registration and payment conditions before relying on an expected income. Important questions include how often payment is made, whether export data is estimated when readings are unavailable, what happens after changing supplier, and whether the rate can be changed or withdrawn under the contract. Keep commissioning records, invoices, system specifications and meter correspondence, because these may help resolve a later dispute about the installation or the volume of exported electricity.
How grants and planning rules fit in
An SEAI solar PV grant and the Clean Export Guarantee address different parts of the project. A grant may reduce some eligible installation costs if the applicant and property meet the current conditions, while CEG concerns payment for electricity exported after the system is operating. Grant eligibility, the exact available amount and approval are decided by SEAI, not by GrantWise, a supplier or an installer. Current rules should be checked on seai.ie before work starts, and grant-funded work should be completed by an SEAI-registered contractor where the scheme requires this.
Do not assume that a grant approval or a contractor's estimate includes export registration, meter changes, planning checks or future supplier payments. Before signing, ask for a written breakdown covering the system size, panels, inverter, battery if proposed, expected generation, grant treatment, connection arrangements and any exclusions. The SEAI grant calculator step by step can help organise an initial estimate, but it is not a formal approval tool and its figures and conditions must be verified against the current official scheme.
Planning is a separate question from both grant support and CEG. The solar panel planning permission Ireland FAQ should be checked against current national and local requirements, including panel location, roof type, protected structures, architectural conservation areas and any limits that apply to a particular property. Planning status, grant approval and export payment are separate decisions; satisfying one does not automatically satisfy the other, so obtain appropriate confirmation before ordering equipment.
Working out whether solar export suits your home
Start with your electricity bills and identify when the home uses power, rather than looking only at annual consumption. Daytime demand from appliances, home working, hot-water heating or electric vehicle charging may allow more generation to be used directly. If most consumption occurs in the evening, export may be higher, but the value of exported electricity still depends on the supplier rate and should be compared with the value of using the electricity at home.
Request more than one written quotation and compare like with like. A useful quote should identify the proposed system capacity, estimated annual generation, orientation and shading assumptions, inverter warranty, monitoring arrangements, scaffolding, electrical work, grid connection responsibilities and aftercare. It is sensible to check installers against SEAI's own registered-contractor list rather than relying solely on advertising, reviews or an assertion that a system is grant eligible.
A heat pump can alter the electricity profile because it may use power across different seasons and times of day. Someone researching the SEAI heat pump grant calculator 2026 should use the current SEAI tool and guidance rather than carrying figures from an older scheme year into a solar decision. The heat pump grant, solar PV support and CEG are distinct matters, so assess the combined system's design, running pattern and eligibility with the relevant official sources before committing.
Key Takeaways
The Clean Export Guarantee is best understood as a possible payment from an electricity supplier for qualifying renewable electricity exported to the grid. It is not an SEAI grant, not a guaranteed return on a solar installation and not a fixed national tariff that remains unchanged for every customer. The amount received depends on measured export, supplier terms, account arrangements and the conditions in force when the electricity is supplied.
Before proceeding, confirm the current solar grant rules on seai.ie, check whether the proposed installer is SEAI registered, ask the electricity supplier how export will be measured and investigate any planning or connection requirement. Compare quotations using realistic assumptions about self-consumption, weather and shading, and keep copies of all approvals and technical documents. If a provider presents an income forecast, ask which figures are guaranteed, which are estimates and which depend on future supplier decisions.
In short, verify the grant, meter, planning and supplier position separately. That approach reduces the risk of confusing an export payment with grant funding or assuming that panels will produce a particular income. GrantWise provides independent guidance only; SEAI decides grant eligibility and approval, while the electricity supplier sets and administers its applicable export-payment arrangements.