Sustainex 2013 - Renewables New Technology Kevin MacLennan Mabbett (PDF)
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- The document provides an overview of renewable energy technologies including wind, solar, biomass, hydro, geothermal and anaerobic digestion. - It discusses factors to consider such as site suitability, available financial support mechanisms like NIROCs and RHI, and how to determine which technologies may be viable options. - The workshop encourages participants to use the information and questions provided to identify potential renewable energy projects for their sites.
Sustainex 2013 - Renewables New Technology Kevin MacLennan Mabbett (PDF)
- 1. Renewable Energy Workshop By Kevin MacLennan Environmental Engineer
- 2. Overview • Introduction to Renewable Energy – What is it? – Why Use it? – What are the Technologies • Where is it suitable • Available Financial Support • Can I use Renewables • What next
- 3. Before We Begin… • Before thinking about renewable energy, consider the energy hierarchy: – Reduce the need for energy – Use energy more efficiently – Use Renewable Energy – Use fossil fuels efficiently
- 5. Why Use Renewable Energy? • Renewable Energy can: – Reduce environmental impact – Save money – Increase security of supply – Improve the ‘green’ credentials of your organisation
- 6. Remember… • The biggest returns will always be realised from using renewable energy on site
- 7. What is Renewable Energy? • Renewable energy is energy that comes from resources which are continually replenished such as sunlight, wind, rain, tides, waves and geothermal heat.
- 8. Renewable Technologies: • Wind • Solar PV • Solar Water Heating • Biomass (including Biofuels) • Hydro-Electricity • Geothermal and Heat Pumps • Anaerobic Digestion
- 9. Wind Power – What is it? • Power from the wind It’s been around for years
- 10. Wind Power – Types of Turbines
- 11. Large Wind –Suitable for your site? Some points to consider: • Is it windy – (Wind Energy Database)? • Is there space? • Connection to the National Grid • Planning permission • High Capital Costs
- 12. Small Wind – suitable for your site? • Again, is it windy (Wind Energy Database)? • Lower capital costs • Do you have an electrical baseload? • Are there space, planning restrictions?
- 14. Solar PV
- 15. Solar PV – Electricity from the Sun • It is a proven technology – in the right location • Low efficiency (~10%) and low energy output • Works best where it’s sunny • Not financially viable in UK without NIROCs (typical payback of 60+ years)
- 16. Solar PV – is it right for your site? • Do you have rood space? • ~£1,600 per kW • 14 year payback without NIROCs • 6.1 year payback with NIROC’s
- 19. Solar Water Heating • Slightly more effective than PV • Can be effective in the right circumstances • High capital costs compared to returns • Can not be considered as a primary source of hot water. • Benefits from RHI support
- 20. Solar Water Heating – Right for your site? • Available Roof Space? • DHW demand? • £500 per m2 of panel • ~£10-12 saving per m2 per year without RHI – 42 year payback • ~£30 saving per m2 per year with RHI (up to 200 kWth output) – 17 year payback
- 21. Biomass Heating
- 22. Biomass Heating – is it suitable for your site • How do you currently heat (oil, gas, electricity)? • Can be very attractive compared to electricity or oil • Tried and tested technology • Can often be integrated with existing systems.
- 23. Biomass Heating – is it suitable for your site • Requires a lot of space, particularly for fuel storage. • Most suited to predictable constant loads – good for meeting a heating baseload • Generally works best in tandem with oil or gas heating • Benefits from RHI support
- 26. Hydro Electricity • Again, a tried and tested technology • Can be very predictable in terms of output • Highly dependant on site conditions • Capital costs can be high • Well supported by NIROC’s
- 27. Hydro Electricity – an opportunity for you? • Is there a water source on your site? • Is there a drop in height (head)? • Is there space to exploit it? If the answer to all of the above is yes, then perhaps Hydro is worth exploring further.
- 28. Geothermal and Heat Pumps
- 29. Geothermal and Heat Pumps
- 30. Geothermal and Heat Pumps • High capital costs for relatively low returns • May be cost effective where excavation is being carried out • Unlikely to be suitable as a primary heat source • Paybacks typically 15+ years
- 33. Anaerobic Digestion • Gas from organic material, such as: – Catering waste – Vegetables – Milk – Manure
- 34. Anaerobic Digestion • Increasingly popular technology • Requires space and a waste stream • Relatively labour intensive • High capital costs • Can be tricky to get right
- 35. Anaerobic Digestion – right for you? • Do you have a waste stream? • Do you have space? • Can you use the gas?
- 36. Funding Support • Northern Ireland Renewable Obligation Certificates (NIROC’s) • Renewable Heat Incentive (RHI) • Interest Free Loans
- 37. NIROC’s • Renewables Obligation Certificates (ROCs) can be sold on an open market • ROCs earned per MWh of electricity generated (dependant on technology) • Currently worth ~£50
- 38. NIROC’s
- 39. Renewable Heat Incentive • Financial incentive for renewable heat sources: – Solar Water Heating/Solar Thermal – Geothermal energy – Heat Pumps – Biomass – CHP with biomass fuel
- 40. Interest Free Loans • Available from the Carbon trust to SME’s • Based on amount of CO2 saved on site – doesn’t count electricity exported to grid • Unsecured loans from £5,000 - £400,000
- 41. Which one is right for you? • Can any of the above work for your site? • Using the hand-out, start working through the questions. • Is there a potential project?