Oireachtas Joint and Select Committees

Tuesday, 16 April 2019

Joint Oireachtas Committee on Communications, Climate Action and Environment

Microgeneration Support Scheme Bill 2017: Discussion (Resumed)

Mr. Peter O'Shea:

Absolutely. The future in that regard is about a large number of small things rather than a small number of large things. In the recent auctions, we won the rights to build lots of battery technology. We are looking at ocean wind and onshore wind. We have entered agreements with the Oriel project and with the Galloper Wind Farm in the UK. We are looking at a range of different options on the renewable side, but there is also a lot of uncertainty as to what will be the overall outcome.

On the previous question, I would characterise the network issues we are facing as upstream and downstream. Upstream is all about how we can manage what is an intermittent resource in getting it to the network in order that it can then feed downstream to customers. I am on record as stating that EirGrid has done a super job in that space over the past five to seven years in getting the intermittency up to a 65% level. The 70%-30% target that is emerging is 70% on average. To get the 70% on average, electricity from intermittent sources on the grid system would probably require 90% plus intermittency at any particular point, but the other representatives may know better in that regard. It is a major challenge. I have no doubt that we will get there in time but it is a big challenge.

Having solved that piece upstream, there is another challenge in bringing it downstream, particularly when we reflect on the fact that electrification of transport and heat will add a fair amount to the overall demand for electricity for the period. The challenge faced by our distribution business is how we get more of the juice from upstream to downstream through the existing cables and via the transformation capacity. Investment is required in additional transformation capacity, additional cabling and wires and also in smart technologies to try to even out the demand over the course of a day, for example, so that existing capacity can be used better.

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