Site planning risk brief

The construction of a single data centre building located to the north of the site, with an overall gross floor area of c. 29,076 sq.m across two levels and an overall maximum height of c. 22.764m at parapet level. The data centre building includes data halls and associated electrical and mechanical plant rooms (c. 23,908 sq.m), an administrative and staff services block (c. 5,052 sq.m) and circulation and stairs (c. 116 sq.m). 2 no. external terraces are proposed to the east of the building (c. 309 sq.m) and an external generator yard to the south of the building (c. 5,205 sq.m) accommodating 25. no. backup / dispatchable generators and associated flues (to a height of c. 21.164m) within an enclosed compound. The construction of a sprinkler tank and pump house to the northeast of the site, the sprinkler tank is an overall height of c. 7.2 m and the pump house is a single storey building with an overall height of c. 4.15m and area GFA of c. 40.23 sq.m. The construction of an entrance hut at the main access to the south of the site, the hut is an overall height of c. 3.225m and area GFA of c. 11.6 sq.m. Construction of 2 no. site access points from the south and internal road network and circulation areas, footpaths, cyclist infrastructure, the provision of 56 no. car parking spaces (including 12 EV charging spaces and 7 disabled spaces, 3 of them EV), 20 no. cycle parking spaces, hard and soft landscaping and planting, site lighting, PV panels and plant at roof level, foul water connection connecting to existing WWTP in Killala Business Park, boundary treatments, green walls and all associated and ancillary works including underground foul and storm water drainage network and utility cables and all ancillary works and services. An EPA-Industrial Emissions Directive (IE) licence will be applied for to facilitate the operation of the proposed development. An Environmental Impact Assessment Report (EIAR) and a Natura Impact Statement (NIS) will be submitted to the Planning Authority with the planning application and the EIAR and NIS will be available for inspection or purchase at a fee not exceeding the reasonable cost of making a copy at the offices of the Planning Authority.

25 YEAR PERMISSION FOR AN ENERGY STORAGE FACILITY. THE DEVELOPMENT WILL COMPRISE OF A COMPOUND CONTAINING 4 NO. ENERGY STORAGE CONTAINERS WITH A CAPACITY OF UP TO 15MV AND ASSOCIATED TRANSFORMERS, SWITCHGEAR, A PRIMARY METERING CABINET, AN AUXILIARY TRANSFORMER UNIT, ELECTRICAL CABLE DUCTING OF APPROX 112M AND COMMUNICATIONS CABLE DUCTING OF APPROX 124M TO CONNECT TO THE EXISTING 38KV SUBSTATION ON THE KILLALA COMMUNITY WIND FARM SITE AND ALL ANCILLARY DEVELOPMENT

A BATTERY STORAGE FACILITY WITHIN A TOTAL SITE AREA OF UP TO 1.18ha, TO INCLUDE 55 NO. SELF CONTAINED BATTERY CONTAINER UNITS WITH ASSOCIATED HVAC COOLING UNITS, 15 CONVERTER AND 15 SET UP TRANSFORMER CONTAINER UNITS, ASSOCIATED COMPOUND CABLING AND DUCTING, A GRID TRANSFORMER, A SINGLE STOREY SUBSTATION/CONTROL BUILDING WITH WELFARE FACILITIES, A CABLE ROUTE GRID CONNECTION TO THE EXISTING ESB SUBSTATION BUILDING, MAINTENANCE LIGHTING, SECURITY FENCING, A CCTV MONITORING SYSTEM, LANDSCAPING WORKS AND ALL ASSOCIATED ANCILLARY INFRASTRUCTURE ON LANDS WITHIN THE TAWNAGHMORE GENERATION STATION. A TEN YEAR PLANNING PERMISSION IS BEING SOUGHT TO CONSTRUCT THE DEVELOPMENT

The development will consist of the following elements: • Battery Energy Storage System facility, consisting of battery containers with integrated HVAC (Heating, Ventilation, Air Conditioning) units, transformers, inverters, underground cabling, associated control rooms, internal access routes, lighting, CCTV, lightning masts, fencing; • Associated Electrical Compound consisting of: Low voltage operations compound including one (1) single storey control and operational building, electrical plant, cabling, lighting, CCTV, lightning masts, diesel generator and diesel tank, operations and maintenance containers and stores; • High voltage electrical yard comprising outdoor electrical plant and associated compound; • Underground high voltage electrical cable to facilitate a connection to the existing adjacent 110kV Tawnaghmore substation; • Associated landscaping, drainage, decommissioning of existing septic tank and all ancillary works necessary to facilitate the development A 10-year permission is sought in respect of the development. Certain details of the proposed development are unconfirmed in the planning application, and an opinion on unconfirmed details accompanies the application. The Tawnaghmore Power Station has an Environmental Protection Agency (EPA) issued Industrial Emissions (IE) Licence (Reg, No. P0566-02).

A nominal 50 megawatt electricity generating station, combusting woody biomass chips (domestic and imported) as well as a small proportion of fuel oil for boiler start-up. The total site area is 19.0 ha of which approximately 7 ha will be developed. The elements of the station are: weighbridges (2 no.), scale house, roundwood storage area, log deck, enclosed wood chipper, wood chip truck dump, wood chip receiving hopper, wood chip screen, wood chip hog, wood chip bins (2 no.), wood chip storage building, wood chip reclaimer, wood chip conveyors with associated magnetic separators, fuel oil storage tank and associated pumps, fuel oil generator, boiler house, baghouse, ash silo, induced draft fan room, boiler stack, combustion air and flue gas fans, boiler additive material receiving hoppers (3 no.), boiler additive conveyors with associated magnetic separators, boiler additive silos (3 no.), boiler water treatment tanks and associated pumps, ammonia tank and associated pumps, turbine hall (existing), control room (existing), cooling tower and associated pumps, water treatment building, waste water storage tank, fire water storage tank and associated pumps, compressed air system, high voltage transfer lines (3 no.), low voltage transfer lines (3 no.), GSU transformer, switchyard, switchyard MCC room (existing), storage and maintenance building (existing), garage, car park, HGV parking, flagpoles (3 no.), external lighting, CCTV cameras, internal road system, signage, construction compound, landscaping, foul and storm water disposal systems, storm water attenuation, wheel washes, gatehouses (2 no.), entrance gates, security fencing, and all associated site works and services. (See attached Description of Proposed Development document for more details.)

The Proposed Development will consist of a Hydrogen Plant and an Energy Centre. The Hydrogen Plant, to the south of the site,will consist of a Double Storey Electrolyser Building of up to 24m height; Fin Fan Coolers of up to 10.5m height; Hydrogen Storage Area of 7m height; Hydrogen Gas Tube Filling Station of up to 9m height, Gas Injection Compound and Gas Above Ground Installation Building of 4m height; Electrical Substation up to 15m height and Ancillary Equipment Building of up to 3m height; Fire Water Tank of up to 14m height; Pump House of up to 5m height; Administration/welfare building and control block building of up to 4m height. The Energy Centre, to the north of the site, will consist of 9no. Gas Engines generating up to 106MW of power, housed in a Gas Engine Building of up to 13.6m height with two stacks of up to 25m height, Distillate fuel tank of up to 11.2m height, Firewater tank of up to 10m height, associated pumps, sludge tank of 2.1m height and Pump house of 5m Height, Electrical Building of 4m Height, Gate House of up to 4m Height, Administration/Welfare building of up to 4m Height. The Proposed Development includes the demolition and removal of the existing Asahi Plant buildings, foundations, as well as decommissioning and removal of the existing overhead, above ground drainage system and underground services. The Proposed Development will also include Resurfacing, Repair and Improvement of Existing Site Entrance and new Internal Access Roads which in turn opens onto the existing entrance road to the Ballina/Killala regional road (R314). The provision for 23 no. car parking spaces, footpaths, street lighting, external lighting, CCTV cameras, signage, security fencing, construction compound, and all other associated site development plant and equipment and other works including, utilities connections, potable water, stormwater, sewage, and foul wastewater drainage infrastructure, within a total overall application boundary of 6.88ha.