A Note on Benchmarking Batteries, October 2025

As some of you might have noticed, we haven't sent out our monthly BESS benchmarks for October 2025 yet and it's almost December (!). The newsletter issue is delayed due to the fact that EirGrid hasn't uploaded a summary of successful tenderers and their contracted services under DS3 Gate 13 (with agreements starting on 1 October 2025). EirGrid uploaded DS3 results for previous Gates on this publicly available page, so we were surprised they still haven't appeared almost two months later. Without the documents for Gate 13, it's almost impossible to provide reliable estimates of all batteries' DS3 expenditures, which make up the majority of batteries' revenue streams in Ireland at the moment.

In the meantime, the Scheduling and Dispatch Programme update (SDP_02) came into effect in mid-November and we are already seeing changes in batteries' physical notifications and dispatches across the island. So we've made the decision to combine the October and November's Benchmarking Batteries reports and will publish that update in early December. Since the latest DS3 results might still not be publicly available then, we will focus the issue on changes in how batteries participate in wholesale trading. If you want a preview of what some of the immediate changes as a result of SDP_02, I am presenting at a webinar on the role of energy storage in the Irish energy transition at 11am on Tuesday, November 25 and you can sign up here!

We have contacted EirGrid's DS3 team via email to inquire about DS3 Gate 13 results, but we haven't heard back. If you have access to these documents that are supposed to be publicly available and/or have ways to nudge the team to upload them soon, please let us know. Thank you for your patience!