Dynamic Electricity Tariffs in Ireland — What Solar Homeowners Need to Know (June 2026)

What Is a Dynamic Electricity Tariff?

A dynamic electricity tariff prices your electricity in half-hourly intervals, with each interval reflecting the wholesale market price at that time rather than a single flat rate. Prices are set the day ahead and vary significantly across the 48 half-hour periods in a day.

The practical pattern, based on recent Single Electricity Market Operator (SEMO) data for Ireland:

Indicative price ranges based on SEMO day-ahead market patterns. Actual dynamic tariff prices will vary by day and season.

On a standard flat tariff, you pay the same rate regardless of when you use electricity. On a dynamic tariff, you pay the cheap rate when the market is cheap and the expensive rate when the market is expensive. The opportunity is to shift consumption — or use a battery — to avoid the expensive periods.

The CRU Mandate — What Changes on 1 June 2026

The Commission for Regulation of Utilities (CRU) originally decided in September 2024 (decision CRU2024121) that the five largest electricity suppliers in Ireland must offer a Standard Dynamic Price Contract to customers by 1 October 2025. That deadline was extended to 1 June 2026 by a CRU notification issued on 8 April 2025 (reference CRU202517). This is the current regulatory deadline; check cru.ie for any subsequent updates. The five suppliers required to comply are those with more than 200,000 customers:

• Electric Ireland
• Bord Gáis Energy
• SSE Airtricity
• Energia
• PrePay Power (trading as Yuno Energy)

Other suppliers can offer dynamic tariffs voluntarily but are not required to. Before this mandate, a handful of suppliers offered dynamic-style products, but access was patchy. From 1 June, every customer with a smart meter and an account with any of these five suppliers has the option to switch to a dynamic tariff through their normal account management process.

A smart meter is a prerequisite. ESB Networks has been rolling out smart meters since 2019, covering the majority of Irish homes by mid-2026. If you do not yet have one, contact ESB Networks to request it before switching tariff.

How Solar Panels Change Your Dynamic Tariff Maths

The economics of dynamic tariffs and solar panels work in the same direction at the same time of day. This is the point most coverage of dynamic tariffs misses.

On a dynamic tariff, the cheapest electricity is at midday, when wholesale prices are already low partly because of solar generation on the grid. A home with solar panels is generating its own electricity at exactly that window — so the panels are offsetting your consumption during the period when import prices are already low anyway. The real financial gain from dynamic tariffs comes from avoiding the evening peak (5–9pm), when solar output has dropped to near zero and wholesale prices are at their highest.

Without solar, a dynamic tariff requires careful scheduling of dishwashers, washing machines, and other controllable loads to shift them out of the evening peak. With solar and a battery, the battery does that automatically: charged during cheap daytime hours (from solar generation or cheap overnight rates), discharged during the expensive evening peak to reduce or eliminate imports at 25–40c/kWh.

Solar + Battery Storage on a Dynamic Tariff — The Real Numbers

A typical 4 kWp solar system in Ireland generates €900–€1,300 per year in value through self-consumption (electricity you generate and use directly, avoiding import at the standard tariff rate of roughly 40–45c/kWh including standing charges and levies).

That self-consumption saving is already in the payback calculation on the solar panels cost Ireland page. Dynamic tariffs add a separate layer on top:

The €300–€500 figure is the additional saving from dynamic tariff optimisation over a flat tariff — separate from the self-consumption value already counted in standard solar payback estimates. These figures assume a home importing around 3,000–4,000 kWh per year after solar self-consumption, with a battery capable of covering the typical 5–9pm peak load of 1–2 kWh per hour. A 10 kWh battery currently adds roughly €4,500–€7,000 to the system cost (there is no SEAI grant for the battery element — see our battery storage guide). At €400/year extra saving, payback on the battery shortens to 7–12 years.

Which Households Benefit Most?

Dynamic tariffs deliver the largest gains for homes with:

• Battery storage. A battery is the main tool for arbitraging the price difference between off-peak and peak periods. Without one, the savings depend on how much you can manually shift your consumption.
• An EV with overnight charging. Charging at 5–8c/kWh overnight rather than 40+c/kWh at peak is a meaningful saving — potentially €200–€400/year depending on mileage. Solar charges the car further during the day at zero marginal cost.
• A heat pump. Heat pumps can pre-heat water or buffer tanks during cheap periods and coast through expensive hours without running. This pairs well with both solar and dynamic tariffs.
• Daytime energy users. If someone is home during the day — working from home, retired, or part-time — solar self-consumption is higher and exposure to the evening peak is lower.

Homes with heavy, unavoidable evening consumption benefit less. The tariff does not penalise evening use — you simply pay the peak rate for what you import, as now on a flat tariff, just with more price variability. The dynamic tariff only underperforms a flat tariff if you import heavily at peak and cannot shift any of that load.

What to Do Before 1 June

1. Check whether you have a smart meter. Log in to your electricity supplier account or contact ESB Networks. Without one, you cannot access a half-hourly dynamic tariff. Request one now if needed — installation is free.
2. Ask your supplier about their dynamic tariff product from June. Each supplier will structure their product slightly differently. Ask for the rate structure and a typical monthly bill estimate before switching.
3. Get a solar and battery quote if you are considering the combination. The dynamic tariff changes the payback maths for battery storage — the additional annual saving of €300–€500 was not available at this scale before June 2026. If battery storage was borderline for your situation previously, the calculation is worth revisiting now.

If you are already getting solar quotes, ask the installer whether their inverter and battery system supports automated dynamic tariff optimisation (sometimes called tariff scheduling or time-of-use mode). Most modern hybrid inverters do — but confirm the specific model supports it and that the installer will configure it correctly.

For more on export earnings alongside dynamic tariff optimisation, see the Clean Export Guarantee rates guide. For the full solar cost and payback calculation, start with the solar panels cost Ireland page.

Frequently Asked Questions