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Dáil
‹ Ceisteanna ó Cheannairí - Leaders' Questions

Battery storage and renewable curtailment

Summary

Deputy O'Gorman highlighted wasted renewable electricity because of limited storage and the lack of a national target or support scheme for battery storage. The Taoiseach said renewables are progressing strongly, the Minister is examining support options, and he would revert after engaging with him.

In April of this year, 46% of our country's electricity came from wind and a further 7% came from solar. That 53% of our electricity or 1,300 GWh of clean renewable electricity in a single month. A key problem with the electricity system in Ireland is that we do not have the energy storage capacity to take full advantage of renewable energy when those conditions are right. At times, renewable producers are directed to create less energy than they have capacity to generate. The system uses technical language like "curtailment" or "dispatch down" for this but there is a simpler word, "waste". In the middle of a worldwide energy crisis, when Irish households' electricity bills are shooting up, renewable energy is being wasted at scale. According to EirGrid, in April 2026, 18% of wind energy was wasted.

This is why we need more energy storage in Ireland. The concept is simple. Battery storage captures renewable electricity when wind and solar production is high and releases it back onto our grid when demand is high. A significant number of battery storage systems have been granted planning permission here in Ireland. However, when Energy Storage Ireland presented to us in audiovisual room recently, the key barrier it set out was a lack of routes to market access. The last Government published the electricity storage policy framework in July 2024, almost two years ago. This included ten actions. Action 7 required the Taoiseach's Government to set a long-term target for the amount of battery storage needed in order to give an indication to the industry of how much battery storage is anticipated. Action 9 requires the creation of a market framework to incentivise energy storage technologies. Wind and solar electricity have the renewable energy support scheme. Energy storage needs similar financial certainty to incentivise development.

Two years after the publication of that framework, these two actions have not been achieved. As a result, millions of euro worth of renewable energy, renewable electricity, is being squandered. The problem here is not judicial reviews, gold-plated environmental regulations or the climate action Act. The problem is the failure of the Government to prioritise the detailed policy work that is needed to ensure that this technology can work for Irish consumers and for the Irish economy. Will the Taoiseach commit to his Government setting a clear target for long-term energy storage needs in Ireland by the end of this year? Will he also commit to putting in place a renewable energy support scheme for battery storage by the middle of 2027 so that this waste of renewable electricity will come to an end?

Comment on this

What the Deputy said at the beginning is true. We are making very significant progress on renewable energy in this country. We have reached a record of circa 8 GW of renewable energy generation capacity, which is up from 4.8 GW in 2020. Onshore wind now provides very significant levels of power. Last year, we hit the important milestone of 5 GW of installed onshore wind capacity. We also reached the milestone of 2GW of installed solar capacity last November.

In terms of solar generated electricity, in April we reached a peak of 1 GW on the grid. That is enough power for around 500,000 people. Solar generation went from zero to replace coal as the third highest source of indigenous generation in less than a decade. This is the progress we are making. There is about 1.91 GW of electricity storage systems with planning permission and connection contracts pending fulfilment with EirGrid as of last December. As the Deputy knows, we are pursuing offshore wind capacity. Particularly in terms of the auctions that were concluded over the past two years, if we can get those developed, then we will be in a very significant position in terms of renewables powering the majority of electricity.

On the storage issue more generally, we will commit to setting a target. In terms of an incentive scheme or grants, as the Deputy has outlined, I will revert to the Minister in respect of that. Again, that is something that will be assessed. More broadly, the technology is improving all the time. There is a significant degree of private sector investment in the storage area, also. I have witnessed some of this at some of the openings we have been at. For example, in the midlands in particular, we will see further developments in that regard. However, we have made a lot of progress. We can make more progress. When the Deputy said it is wasted and so on, it is an issue of technology and technology catching up in terms of that storage area. That has been an evolving story for the past number of years. It is not quite there yet but it is making huge progress. We will do everything that we can to support it.

Comment on this

With respect, while the Taoiseach is right that it is an issue of technology, the solution is there. The solution is there in terms of battery storage and we do not have enough of it. What representatives of the industry told all Members of the Oireachtas from the Opposition to the Government when they were in with us is that the two key barriers to them are the lack of a national target for how much the Government thinks in terms of energy support that is needed and that support system to help them to deliver it. The Taoiseach is right that planning permission has been granted for plenty of battery storage units around the country but they will not get the financing if they do not see that there is a clear route to market access. The companies that are looking to set up here are mobile. They can support it in Germany or other European countries - the countries that actually have put in the work to put in those support frameworks to make it financially viable. What is needed is here is focus on getting through the policy blockages that exist and that can actually ensure that this technology that is available can deliver lower price energy for Irish consumers.

Comment on this

The Minister is pursuing these issues across the board. We certainly we engage in respect of a support system. When any industry comes looking for a support system, it is reasonable that the Government approaches that in terms of value for money, representing the taxpayer and to make sure that we do it properly and right. I will engage with Minister in respect of the issues the Deputy has raised now and revert to him.

Comment on this