A step toward removing dual grid fees for energy storage units (ESUs) has been hailed as "great news for the Irish storage industry."
Why it matters: Ireland just fixed the broken math that was killing battery IRR, clearing the way for a massive BESS land grab in a wind-heavy market.
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Let’s call dual charging what it actually was: a bureaucratic tax on physics. For years, the Irish regulator treated batteries as if they were both a factory consuming power and a power plant producing it, levying grid fees on both ends of the cycle. For a developer in Dublin or Cork trying to make a 50MW BESS project pencil out, those phantom costs were often the difference between a 'Go' decision and a project that sits on a hard drive for three years.
The Wind Curtailment Paradox
Ireland has some of the highest wind curtailment rates in Europe—at times, EirGrid has to throw away over 10% of available renewable generation because the grid can't handle the surge. We have free electrons spinning off turbines in the Atlantic with nowhere to go. By moving to remove these 'double-dip' fees, the CRU (Commission for Regulation of Utilities) is finally aligning its fee structure with the EU Electricity Directive 2019/944, which explicitly forbids discriminating against storage. This isn't just 'good news'; it's the removal of a structural blockade that was making Irish storage artificially expensive compared to the UK or Germany.
The Margin Shift
For EPCs and project developers, this changes the internal rate of return (IRR) overnight. When you strip out the double-charging overhead, the arbitrage spread required for profitability narrows significantly. We’re going to see a surge in Single Electricity Market (SEM) activity. If you've been sitting on the sidelines of the Irish market because the 'math didn't math,' it’s time to re-run your spreadsheets. The revenue stack—from frequency response to energy shifting—just got a lot more attractive for the 2025-2026 delivery years.