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Mid West Regional Authority

Energy Solutions for Sustainable Development. Mid West Regional Authority. Renewables for Sports Facilities. Greenhills hotel, Limerick. Presentation Contents. Energy Efficiency First Detailed load analysis Thermal renewables Electric Renewables. Energy Efficiency First.

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Mid West Regional Authority

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  1. Energy Solutions for Sustainable Development Mid West Regional Authority Renewables for Sports Facilities Greenhills hotel, Limerick

  2. Presentation Contents • Energy Efficiency First • Detailed load analysis • Thermal renewables • Electric Renewables

  3. Energy Efficiency First • It is essential to minimise energy needs before installing renewable technologies • Energy audits identify the appropriate “target” • Investment in energy efficiency is cost effective and will generally have short payback periods

  4. Detailed load analysis • Where renewable energy technology is used to meet on-site consumption • Decide if it is feasible to meet all energy needs from renewables • Understand both the Demand and Consumption profiles of energy use

  5. Thermal Energy Renewables • Solar thermal - Passive • Many buildings are not designed to utilise passive solar gains • All buildings can be adapted to maximise the benefit of passive solar gain. • Solar gain can include light as well as heat • Fabric is essential to harness solar gains particularly glazing & insulation • Open floor plan is essential for heat distribution

  6. Thermal Energy Renewables • Solar thermal panels • Flat plate & vacuum tube • Typically only for hot water and in sports facilities may not be capable of meeting total needs. • Planning exemptions apply • Total aperture area < 50m2 or 50% of total roof area, whichever is lesser • Grants may be available • Costs will be €1,500 / kW • Size your buffer tank carefully

  7. Thermal Energy Renewables • Geothermal thermal • Planning exemptions possible • Ground level alteration < 1m above or below adjoining ground • Total area of heat pumps < 15m2 • 50cm from edge of wall or roof • Capital Cost approx €700 / kW, grants available • Collector size and buffer tanks Very important • Understand both the Demand and Consumption profiles of energy use • Usually more economic to size based on the main heat demand with back up, or as back up to another renewable energy option

  8. Thermal Energy Renewables • Biomass thermal - indigenous • Wood chip • Miscanthus • Planning exemptions possible • Gross floor space < 20 m2 • Capacity of fuel storage tank above ground < 50,000 litres • Max height of boiler house or fuel tank < 3m • Up to 2 flues, max height 15m and max diameter 2m • 100m from nearest inhabited dwelling • 50m from nearest public road • Capital cost are approx €350 - 450 / kW • Grants available for up to 40% • Supports local enterprise • Fuelstorage and hot water buffer tank, important

  9. Thermal Energy Renewables • Biomass thermal – processed pellet • These are generally a residue of the construction industry but not particularly • Planning exemptions may apply • Gross floor space < 20 m2 • Capacity of fuel storage tank above ground < 50,000 litres • Max height of boiler house or fuel tank < 3m • Up to 2 flues, max height 15m and max diameter 2m • 100m from nearest inhabited dwelling • 50m from nearest public road • Cost for equipment are approx €400 / kW, grants available • Fuel & Bufffer storage size is important

  10. Electric Energy Renewables • Micro wind turbine • Exemption from planning No exemption for building-mounted turbines • Max height < 20m • Rotor diameter < 8m • Ground clearance > 3m • Turbine height plus 1 m from nearest party boundary • 100m from nearest inhabited dwelling • 50m from nearest public road • 6 kW turbines cost approx - €25,000 • Standard of turbine and installation; important • REFIT values (68.7 c/kWh) make payback typically > 15 years

  11. Electric Energy Renewables • Micro hydro turbine • Significant planning issues to overcome • Significant Habitats, Fisheries & Environment issues to overcome • 3 kW turbines cost approx - €20,000 • REFIT values (83.8 c / kWh) make payback > 10 years. • Does not generally suffer from the difficulty of variability. • Potential and case studies available on the web site www.lcea.ie

  12. Electric Energy Renewables • Photovoltaic panels • Exemption from planning possible • Total aperture area < 50m2 or 50% of total roof area, whichever is lesser • 1 kW turbines cost approx - €6,000 • Panels can make a contribution to base electricity load • Unlikely to be economic in sports facilities • REFIT payments make these uneconomic at present.

  13. Thank You Energy Solutions for Sustainable Development • Limerick Clare Energy Agency • Foundation Building • University of Limerick • Limerick • Pat Stephens • Manager • T: 061 234296 • E: info@lcea.ie • W: www.lcea.ie

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