Topic Grid
01
Wholesale Market
Summary
DAM spreads EUR 83-121/MWh; SDP live Nov 2025; DASSA May 2027
Open Questions (7)
- Actual post-SDP revenue data for BESS operators (expected mid-2026)?
- Exact DASSA auction clearing price levels and volume forecasts?
- Granular half-hourly negative price counts for I-SEM 2024-2025?
- CRM de-rating factors for batteries at 1h, 4h, 6h+ durations?
- T-4 2029/30 auction results (scheduled 26 March 2026)?
- Per-MW revenue decline estimate from DS3 to DASSA?
- Round-trip efficiency assumptions used by Irish trading houses?
02
Household Tariffs
Summary
Best spread 38.8c/kWh (Bord Gais EV); dynamic pricing Jun 2026
Open Questions (4)
- How will dynamic tariff savings compare to fixed TOU rates once June 2026 launches?
- Will fixed TOU tariffs continue or be phased out after dynamic tariffs?
- Realistic daily cycle count for battery warranty impact?
- Are there battery-as-a-service offerings emerging in Ireland?
03
Fees & Charges
Summary
D-TUoS EUR 26-29/MWh is biggest cost; reform NOT adopted
Open Questions (6)
- VAT treatment of wholesale I-SEM transactions?
- Specific DS3 base payment rates (EUR/MW/hr per service)?
- Local authority rates, planning levies on BESS facilities?
- Exact formula for SEMO Collateral Requirement Calculation?
- Imperfections charge impact on self-supplying BESS operators?
- Site-specific connection costs beyond EUR 7,000 pre-app fee?
04
Irish Precedents
Summary
730 MW operational; 10 GW pipeline; 83 MW under construction
Open Questions (7)
- Exact Dunnstown (Strategic Power) current status -- grid connection?
- Detailed DS3 contract values per project?
- ESB Inchicore operational date confirmation?
- Gore Street Portersdown operational date?
- FuturEnergy Ireland Ballynahone (iron-air) construction timeline?
- Neoen Curraduff appeal outcome (200+ objections)?
- Arigna LDES / Lough Allen appeal outcome?
05
EU Regulation
Summary
Battery passport Feb 2027; SBESS carbon footprint Aug 2030
Open Questions (5)
- Will Irish planning require Battery Regulation compliance evidence?
- Has EN IEC 62619:2022 been listed as harmonised standard?
- Exact PEF/PEFCR methodology for SBESS carbon footprint?
- Minimum performance and durability values (delegated act pending)?
- Insurance implications of the regulation for BESS coverage?
06
Supply & Demand
Summary
Demand +45% by 2034; BESS saturates at 2-3 GW; Celtic Interconnector 2028
Open Questions (6)
- What DASSA clearing prices will replace DS3 tariffs? (DS3 extended to Sep 2027 longstop per SEM-25-031; DASSA targeted May 2027)
- Will the 83 MW BESS construction pipeline accelerate?
- How much spread compression will Celtic Interconnector deliver?
- Can Ireland's planning system deliver 700 MW/yr onshore renewables?
- Will CRU data centre policy unlock or constrain the 5.8 GW pipeline?
- At what installed GW does Irish BESS arbitrage become unprofitable?
07
Battery Costs
Summary
LFP cells $36-56/kWh; turnkey EU $101-120/kWh; 45% YoY decline
Open Questions (8)
- Vendor-specific per-MWh pricing from CATL, BYD, Sungrow, Fluence?
- Exact HS code classification for specific BESS configurations?
- Ireland-specific BESS degradation field data?
- O&M cost breakdown by project scale tier (10/50/100 MW)?
- EVE Energy warranty terms (primary source needed)?
- Irish BESS project finance debt margin / spread data?
- Timeline of EU anti-subsidy investigation into ESS imports?
- Impact of CATL/BYD Hungary factory ramp on EU pricing?
08
BOS & Inverters
Summary
Transformer 128-144 wk lead time; total $125/kWh ex-China
Open Questions (5)
- Ireland-specific BESS installed cost data (UK proxy currently used)?
- All-in landed cost of Chinese equipment in Ireland after CBAM?
- Are 20 MWh frontier containers available for European markets?
- EMS licence fees for 100+ MWh Irish projects?
- Impact of R&S Group / Kyte Powertech acquisition on transformer timelines?
09
Land & Sites
Summary
4-5 acres needed; EUR 20-25k/acre/yr lease; 12-13% planning refusal
Open Questions (7)
- Actual transactional premium for land adjacent to substations?
- Will the 2024 Planning (Stationary BESS) Bill pass, and what EIA thresholds?
- MW threshold for mandatory SID classification for standalone BESS?
- Is Lough Ree/Lanesborough 110kV viable for a BESS project?
- Actual grid connection costs at varying distances from substations?
- Impact of ECP-GSS bi-annual batch process on project timelines?
- Ireland-specific setback and fire safety requirements?
10
Grid Connection
Summary
ECP-GSS bi-annual batches; EUR 25k/MW MEC bond; 4+ year timeline
Open Questions (7)
- Actual EUR/MW shallow connection costs for representative BESS sites?
- Current network capacity charge rates for bond calculations?
- CRU decision on charging/rebating methodology (FMP vs rebate)?
- Actual ECP-GSS batch processing times vs legacy 6-12 months?
- Pass-through costs in ESB Networks generator connection charges?
- Impact of TUoS/DUoS reform proposals on BESS economics?
- EirGrid ECP Constraint Reports for location-specific availability?
Open Questions Tracker
| # | Question | Topic | Priority | Blocked |
|---|---|---|---|---|
| 1 | Actual post-SDP revenue data for BESS operators (expected mid-2026 at earliest)? | Wholesale | HIGH | No |
| 2 | Exact DASSA auction clearing price levels and volume forecasts? | Wholesale | HIGH | No |
| 3 | Granular half-hourly negative price counts for I-SEM 2024-2025 (requires SEMOpx data)? | Wholesale | MEDIUM | No |
| 4 | CRM de-rating factors for batteries at 1h, 4h, 6h+ durations? | Wholesale | HIGH | No |
| 5 | T-4 2029/30 auction results (scheduled 26 March 2026)? | Wholesale | MEDIUM | No |
| 6 | Per-MW revenue decline estimate from DS3 to DASSA (Cornwall Insight models paywalled)? | Wholesale | HIGH | Yes -- paywall |
| 7 | Round-trip efficiency assumptions used by Irish trading houses for Li-ion BESS? | Wholesale | LOW | No |
| 8 | How will dynamic tariff savings compare to fixed TOU rates once June 2026 launches? | Tariffs | MEDIUM | No |
| 9 | Will fixed TOU tariffs continue or be phased out after dynamic tariffs become available? | Tariffs | LOW | No |
| 10 | Realistic daily cycle count for battery warranty (6,000-10,000 cycles; daily cycling ~3,650/10yr)? | Tariffs | LOW | No |
| 11 | Are there battery-as-a-service offerings emerging in Ireland? | Tariffs | LOW | No |
| 12 | VAT treatment of wholesale I-SEM transactions (Revenue.ie TDM inaccessible; tax advisor needed)? | Fees | HIGH | Yes -- needs advisor |
| 13 | Specific DS3 base payment rates (EUR/MW/hr per service)? | Fees | MEDIUM | No |
| 14 | Local authority rates, planning levies, or development contributions on BESS facilities? | Fees | MEDIUM | Yes -- council query |
| 15 | Exact formula for SEMO Collateral Requirement Calculation? | Fees | MEDIUM | No |
| 16 | Imperfections charge impact on self-supplying BESS operators? | Fees | HIGH | No |
| 17 | Site-specific connection costs (beyond EUR 7,000 pre-app fee)? | Fees | MEDIUM | No |
| 18 | Exact Dunnstown (Strategic Power) current status -- grid connection obtained? Construction start? | Precedents | MEDIUM | Yes -- developer query |
| 19 | Detailed DS3 contract values per project (pricing not disclosed)? | Precedents | HIGH | Yes -- commercially sensitive |
| 20 | ESB Inchicore operational date -- inferred "early 2022" unconfirmed? | Precedents | LOW | No |
| 21 | Gore Street Portersdown operational date? | Precedents | LOW | No |
| 22 | FuturEnergy Ireland Ballynahone (iron-air) construction timeline? | Precedents | MEDIUM | No |
| 23 | Neoen Curraduff appeal outcome (200+ objections to ABP)? | Precedents | LOW | No |
| 24 | Arigna LDES / Lough Allen appeal outcome? | Precedents | LOW | No |
| 25 | Will Irish planning permissions require Battery Regulation compliance evidence? | EU Reg | MEDIUM | No |
| 26 | Has EN IEC 62619:2022 been formally listed as harmonised standard under the regulation? | EU Reg | LOW | No |
| 27 | Exact PEF/PEFCR carbon footprint methodology for SBESS (delegated act delayed)? | EU Reg | MEDIUM | No |
| 28 | Minimum electrochemical performance and durability values (delegated act not published)? | EU Reg | MEDIUM | No |
| 29 | Insurance implications of the EU Battery Regulation for BESS project coverage? | EU Reg | LOW | No |
| 30 | What DASSA clearing prices will replace DS3 tariffs? (DS3 extended to Sep 2027 longstop per SEM-25-031; DASSA targeted May 2027) | Supply/Demand | HIGH | No |
| 31 | Will the 83 MW BESS construction pipeline accelerate, or does revenue uncertainty keep it frozen? | Supply/Demand | HIGH | No |
| 32 | How much spread compression (EUR/MWh) will Celtic Interconnector actually deliver? | Supply/Demand | HIGH | No |
| 33 | Can Ireland's planning system deliver the 700 MW/yr onshore renewable additions needed? | Supply/Demand | MEDIUM | No |
| 34 | Will CRU's data centre connection policy (March 2026) unlock or further constrain the 5.8 GW pipeline? | Supply/Demand | MEDIUM | No |
| 35 | At what installed GW does Irish BESS arbitrage become unprofitable for new entrants? | Supply/Demand | HIGH | No |
| 36 | Vendor-specific per-MWh pricing from CATL, BYD, Sungrow, Fluence (all proprietary)? | Battery Costs | HIGH | Yes -- vendor quotes |
| 37 | Exact HS code classification and BTI for specific BESS configurations? | Battery Costs | MEDIUM | Yes -- Revenue query |
| 38 | Ireland-specific BESS degradation field data (no study found)? | Battery Costs | MEDIUM | No |
| 39 | O&M cost breakdown by project scale tier (10 MW vs 50 MW vs 100 MW)? | Battery Costs | MEDIUM | No |
| 40 | EVE Energy warranty terms (inferred from industry norms; no primary source)? | Battery Costs | LOW | No |
| 41 | Specific debt margin / spread data for Irish BESS project finance? | Battery Costs | HIGH | Yes -- commercially sensitive |
| 42 | Timeline and likelihood of EU anti-subsidy investigation into standalone battery/ESS imports? | Battery Costs | MEDIUM | No |
| 43 | Impact of CATL/BYD Hungary factory ramp-up on EU pricing and lead times? | Battery Costs | MEDIUM | No |
| 44 | Ireland-specific BESS installed cost data (UK figures used as proxy)? | BOS | HIGH | No |
| 45 | Realistic all-in landed cost of Chinese core equipment in Ireland (shipping, insurance, CBAM)? | BOS | HIGH | No |
| 46 | Are 20 MWh frontier containers (Gotion, Tesla Megablock) available for European/Irish projects? | BOS | LOW | No |
| 47 | EMS annual licence fees for >100 MWh Irish projects (vendor-specific)? | BOS | MEDIUM | Yes -- vendor quotes |
| 48 | Net impact of R&S Group / Kyte Powertech acquisition on transformer procurement? | BOS | MEDIUM | No |
| 49 | Actual transactional premium for land parcels adjacent to substations vs standard agricultural? | Land | HIGH | Yes -- agent/solicitor |
| 50 | Will the 2024 Planning and Development (Stationary BESS) Bill pass, and what EIA thresholds? | Land | MEDIUM | No |
| 51 | Specific MW threshold for mandatory SID classification for standalone BESS? | Land | MEDIUM | No |
| 52 | Is Lough Ree/Lanesborough 110kV node viable and available for a BESS project? | Land | MEDIUM | No |
| 53 | Actual grid connection costs for sites at varying distances from substations? | Land | HIGH | No |
| 54 | How will the ECP-GSS bi-annual batch process affect project timelines? | Land | MEDIUM | No |
| 55 | Ireland-specific setback and fire safety requirements (vs US/EU defaults)? | Land | MEDIUM | Yes -- reg query |
| 56 | Actual EUR/MW shallow connection costs for representative BESS project sites? | Grid | HIGH | Yes -- EirGrid query |
| 57 | Current network capacity charge rates used in security bond calculations? | Grid | MEDIUM | Yes -- CRU/EirGrid |
| 58 | CRU decision on charging/rebating methodology (FMP vs. rebate)? | Grid | HIGH | No |
| 59 | How will actual ECP-GSS batch processing times compare to legacy 6-12 month window? | Grid | MEDIUM | No |
| 60 | Pass-through costs in ESB Networks standard generator connection charges? | Grid | MEDIUM | No |
| 61 | How will TUoS/DUoS reform proposals (Energy Storage Ireland March 2025) affect BESS economics? | Grid | HIGH | No |
| 62 | EirGrid ECP Constraint Reports showing location-specific grid availability? | Grid | MEDIUM | No |
Verification Status
| # | Claim Verified | Source Topic | Method | Result |
|---|---|---|---|---|
| 1 | LFP cell prices ($36-56/kWh range, 45% YoY decline) | Battery Costs | Cross-referenced BNEF, BloombergNEF, CATL quarterly reports | Confirmed |
| 2 | D-TUoS costs (EUR 26-29/MWh system services charge) | Fees | Verified against CRU tariff determination documents | Confirmed |
| 3 | Transformer lead times (128-144 weeks Europe) | BOS | Cross-checked Wood Mackenzie, IEA transformer report | Mostly Confirmed |
| 4 | Celtic Interconnector (700 MW, spring 2028 commissioning) | Supply/Demand | EirGrid project updates, EIB financing records | Partially Confirmed |
| 5 | Market saturation threshold (2-3 GW for Irish system) | Supply/Demand | GB precedent extrapolation, Cornwall Insight forecasts | Partially Confirmed |
| 6 | Financial model IRR (stated 5-6% base case, 11.4% original); NPV; investment recommendation | Financial Model | Independent reanalysis (21 Feb 2026), 6 parallel verification agents, cash flow reconciliation | CRITICAL ERROR |
Research Progress
Wave 1: Micro-Researchers
20 / 20
20 parallel micro-researchers dispatched. Each answered one specific question and wrote one claim file. All complete.
Wave 2: Summarizers
7 / 7
7 summarizer agents consolidated claims into per-topic _summary.md files. 10 total summaries (3 from Wave 1 + 7 new). All complete.
Wave 3: Cross-Verifiers
6 / 6
6 verification tasks completed. 2 confirmed, 1 mostly confirmed, 2 partially confirmed. Full independent reanalysis performed 21 Feb 2026 with 6 parallel agents: 75%+ factual claims confirmed, 0% contradicted. Critical financial model errors discovered.
Wave 4: Financial Model
CRITICAL ERRORS
CRITICAL ERRORS FOUND (reanalysis 21 Feb 2026): 50 MW / 200 MWh, 4-hour LFP BESS. Prior stated base-case IRR of 5-6% — actual IRR is NEGATIVE (-3.5%). Original 11.4% was inflated by ~5-6pp (augmentation double-counting). NPV: EUR -22.7M at 5%. D-TUoS = 41.1% of gross revenue. Recommendation: DO NOT INVEST — WAIT. Model requires complete rebuild.