The current proposal replaces the previously consented but unbuilt facility under 21/1702 and removes selected existing equipment. The Commission case is pending. February 2026 drawings describe the proposal; they do not establish delivery, battery chemistry or a final equipment supplier.
Battery units and MV skids have separate dimensioned envelopes
Proposed in application · Typical illustrated BESS/MV arrangement, February 2026 planning drawing
What the evidence says
The drawing shows a BESS unit plan of 16.25 by 6.1 metres and a 4.85-metre unit elevation. The illustrated combined BESS-and-MV-skid arrangement is 38.2 metres long; its elevation includes a 5-metre overall level allowance.
Why it may matter — interpretation
Interpretation: distinguishes the battery equipment envelope from the combined arrangement for foundations, access and transport coordination.
What is not established
No inferred number of batteries, aggregate energy capacity, chemistry, manufacturer or installed module count is published. Dimensions are not extrapolated into a project total.
Inspect the evidence
BESS Unit and MV Skid Details · p.1
BESS UNIT ELEVATION · Issued 2026-02-27 · 22490-XX-XXX-DR-MWP-CE-5401 Rev 0, issued for planning; received 2026-02-27 · Checked 2026-09-05
BESS UNIT ELEVATION
Control room separates communications, SCADA and switchgear
Proposed in application · Prefabricated communications/control building arrangement
What the evidence says
The drawing shows an 18.4-metre control-room building with telecommunications and BESS SCADA racks, AC distribution, DC battery, metering and CCTV positions, plus a separate switchgear zone with an arc duct. AC split units are shown at the ends and an auxiliary transformer sits alongside.
Why it may matter — interpretation
Interpretation: identifies electrical, control, cooling and arc-duct coordination requirements.
What is not established
Equipment ratings, selected manufacturers, final commissioning design and installed fit-out are not established.
Inspect the evidence
Comms and Control Room Details · p.1
AC Split Unit · Issued 2026-02-27 · 22490-XX-XXX-DR-MWP-CE-5402 Rev 0, issued for planning; received 2026-02-27 · Checked 2026-09-05
AC Split Unit
New filter drains connect to existing site drainage
Proposed in application · New and retained infrastructure at the existing Kilathmoy substation compound
What the evidence says
The layout marks new filter drains tying into existing drainage, a hydrocarbon interceptor at the auxiliary-transformer area, and relocation of the wastewater tank and rainwater-harvesting unit.
Why it may matter — interpretation
Interpretation: identifies interfaces with retained drainage and water infrastructure rather than treating the whole site as a new system.
What is not established
No final hydraulic calculation, interceptor model or condition discharge is established by this layout.
Inspect the evidence
Proposed Site Layout: Tailte Mapping · p.1
HYDROCARBON INTERCEPTOR · Issued 2026-02-27 · 22490-XX-XXX-DR-MWP-CE-5005 Rev 0, registered as Drainage Layout; received 2026-02-27 · Checked 2026-09-05
HYDROCARBON INTERCEPTOR
Two separately stated above-ground water tanks
Proposed in application · Water tanks shown on the proposed compound layout
What the evidence says
The layout labels two 25,000-litre above-ground water tanks by the compound entrance.
Why it may matter — interpretation
Interpretation: identifies a discrete tank package requiring access and services coordination.
What is not established
The layout alone does not prove fire-service acceptance, operational water availability, installation or purchase. Tank capacities are not combined with battery-energy or drainage-storage quantities.
Inspect the evidence
Proposed Site Layout: Tailte Mapping · p.1
2 X 25,000L ABOVE GROUND WATER TANKS · Issued 2026-02-27 · 22490-XX-XXX-DR-MWP-CE-5005 Rev 0, registered as Drainage Layout; received 2026-02-27 · Checked 2026-09-05
2 X 25,000L ABOVE GROUND WATER TANKS
Selected pages of 3 government-published PDFs were visually inspected. Three technical drawings visually inspected. Later noise response and planner report were text-searched for revision context but are not counted as visually inspected supporting PDFs. Proposals do not establish procurement or installed work.