Presentation on theme: "Climate change and community renewables. +4C is considered ‘incompatible with organised global community’. 2 Average surface temperature at height of."— Presentation transcript:
Climate change and community renewables
+4C is considered ‘incompatible with organised global community’. 2 Average surface temperature at height of last ice age was around -5C. 3 Clean energy supplies must at least treble to avoid catastrophic CC. In April 2014 Asda announced that 95% of their entire fresh produce range is already at risk from climate change. UK Envoy to Foreign Secretary says, climate change poses as grave a threat to the UK's security and economic resilience as terrorism. Human impact now 'unequivocal'; 'incontrovertible'. Positive forcing of 2C by 2046. Perhaps +4C by 2046, and +5.5C by 2100. To avoid +2C would require cuts by the UK, EU & USA of around 80- 90% by 2030. 1 Global context – 2013 IPCC Report
Impacts on Wiltshire Heavy rain, strong winds, fierce heat – leading to more frequent flooding, storm damage, soil erosion, pro-longed drought & greater fire risk. Damage to infrastructure – roads, bridges, utilities, property. Pressure on public services & public spending; increases in council tax. Loss of precious landscape & habitat; reduced biodiversity. Bad harvests here & globally, leading to food shortages; price increases. Northward migration of bugs & diseases – and people.
Legally binding requirement for 80% CO2 reductions by 2050. National renewable energy target of 15% by 2020, including 30% of electricity from renewables by 2020. 1 Wiltshire Council has recognised that 367MW of renewable electricity needs to be installed to meet target for 2020. 2 This equates to about 655,000 MWh/year. 3 Wiltshire is less than ½ way there. Camco recorded these key opportunities for Wiltshire: o Large wind ( 1 / 2 of 2020 target) o Biomass ( 2 / 5 of target) o Solar (unknown) Emissions reductions in context
Home scale Community scale The energy patchwork
Potential to deliver half of the 30% target in Wiltshire by 2020 64 x 2.5 MW turbines, up to100m. Wind is a cheap, efficient & reliable renewable electricity option. Competitive with fossil fuels and nuclear. No large-scale wind in Wiltshire. Potential sites are limited. Wind is badly misrepresented in most mainstream media, and so public opinion is divided. Large-scale wind
100% community owned, and started generating, March 2008. 5 x 1.3 MW turbines; 49m to tip. Electricity for 2,500 homes. Earns around £1m per year for the 2,374 shareholders. Most shareholders live locally. Turbines are now more productive. Land use for farming unaffected. Community funds are now mandatory, at £5K/MW installed. Community wind case study – Westmill
Large and small scale biomass technologies: e.g. wood chip, AD. Unclear if incineration is included – CHP incinerators are eligible for ROCs, but not truly renewable. Genuinely local, low carbon biomass is a good option: E.g. From locally grown energy crops such as willow and maize, sustainable forestry, and anaerobic digestion from animal or human waste. Biomass
Dairy farm, with 350 – 500 cows. Anaerobic digester fed 50:50 by animal waste & locally grown maize. Electricity for 4000 homes. £20m upgrade, including £6.5m AD. As with all energy infrastructure, relies on grid payments that reflect cost of development. Heat for schools & leisure centre is possible, but requires good will and a further £350K investment. AD should not be used as an eco-fig leaf for factory farming. Biomass case study – Sharcott Pennings, Pewsey
Increasingly popular due to recent fall in the price of solar PV. Green field solar growth in Wiltshire is ahead of Camco predictions. Unfortunately, solar has a lower capacity/load factor, at 9%. On-site biodiversity can be enhanced. Solar farms Farming options are more limited, but sheep are often grazed. Community funds are not required, but are often given. Sites for solar are also limited, and low-hanging fruit has largely gone. Solar Strategy includes a non-binding goal of 20GW of installed solar capacity by 2020, up from around 2.7GW currently. Greenfield solar will be essential to meet this goal.
Pewsey is well located for grid connections.
Installation of 208 solar panels, at a cost of about £70,000. Installed capacity of 50 kilowatt- peak (kWp). Payback expected in 6.4 years with 20% interest per annum. Payback is based on a 20-year working life, with FITs at 13.5p/kwh 400% return on investment. Holly Lodge will consume most of the electricity, saving £15,000 p.a. CO 2 savings of 412 tonnes over 20 years. Solar case study – Holly Lodge Care Home, Pewsey
Strict laws to govern new building are essential, but… Most of the UK’s buildings are already built! Retrofitting gets older buildings up to modern standards. The Green Deal can help with: o Leaky doors and windows, o Roof, wall and under-floor insulation and draft proofing, o Hot water and grey water systems, o Micro-generation and renewables, o Efficient heating systems. Retrofitting your home
Opportunities for Pewsey Vale AONB (rightly) restricts opportunities. o Large wind highly unlikely – community scale wind, perhaps. o Additional AD (CHP). o Well-screened community solar. PPC not currently investigating renewables, but should now prioritise this responsibility. Should help identify potential sites for renewables; willing landowners; potential beneficiaries; and attract potential investors. Community consent is also critical.
Raise awareness of the need for renewable energy. Build your knowledge. Help break down prejudice and myths. Urge council to take action. Get involved in neighbourhood planning processes. Help identify possible sites – particularly council land and property, other public buildings, churches, farm land. Support existing community projects. What can you do?