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| 1 |
ID:
090043
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2009.
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| Summary/Abstract |
If future climate change goals being negotiated internationally are to have any chance of being achieved, developed countries need to undertake a major transition in their energy systems. This will require a rapid expansion of renewable energy generation, including wind electricity. Wind energy in New Zealand is commercially viable in many cases, yet opportunities for its exploitation are far from fully utilised. Many communities are showing resistance to wind farm developments, since large wind farms are often seen as intrusive. Building wind farms on a small scale may be a useful way of overcoming this problem.
This study examines the pattern of recent wind industry development in New Zealand. It is argued that two key characteristics have emerged that are limiting the potential development of the industry: a trend towards large scale, leading to increased local opposition; and a small number of investors. Research methods include a review of international and local literature, and a rural mail survey questionnaire, with 338 respondents. We provide survey evidence that small wind farms, and community ownership of them, may be attractive to local communities, and that this point of advantage is helpful for the rapid expansion of wind generation in New Zealand.
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| 2 |
ID:
097206
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2010.
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| Summary/Abstract |
In order to value the costs and benefits associated with improved space heating we analysed the Housing, Heating and Health Study, a randomised community trial involving installation of energy efficient and healthy heaters (heat pump, wood pellet burner or flued gas heater) in homes with basic insulation and poor heating, occupied by households which included a child with asthma. We compared the initial purchase and installation cost of heaters with changes in the number of visits to health professionals, time off work/school, caregiving, and pharmaceutical use for household members and changes in total household energy use and carbon emissions following the intervention. We used two scenarios to analyse the results over the predicted 12-year life-span of the heaters. The targeted approach (Scenario A - assuming high rates of household asthma throughout the period of analysis) produced enough health-related benefits to offset the cost of the heaters, and when total energy use and carbon emission savings were included in the analysis the ratio of benefits to costs was 1.09:1. The untargeted approach (Scenario B - assuming typical New Zealand asthma rates throughout the period of analysis) had a ratio of total benefits to costs of 0.31:1.
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| 3 |
ID:
115640
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2012.
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| Summary/Abstract |
About a quarter of New Zealand households are estimated to be in fuel poverty. NZ has a poor history of housing regulation, so existing houses are often poorly insulated and rental properties are not required to have insulation or heating. Average indoor temperatures are cold by international standards and occupants regularly report they are cold, because they cannot afford to heat their houses. Fuel poverty is thought to be a factor in NZ's high rate of excess winter mortality (16%, about 1600 deaths a year) and excess winter hospitalisations (8%).
We examined the link between indoor cold and health in two community trials, the Housing, Insulation, and Health Study and the Housing, Heating, and Health Study and both interventions demonstrated encouraging benefit/cost ratios. NZ governments have translated this and other research into major policy programmes designed to retrofit insulation and efficient heating into existing houses. However, houses are predominantly electrical resistance heated and a largely unregulated electricity market has seen rapidly rising residential electricity prices. These rising energy prices, combined with low rates of economic growth, rising unemployment and generally rising income inequality, are likely to further increase levels of fuel poverty in NZ, unless broader policy action is taken.
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| 4 |
ID:
090054
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| Publication |
2009.
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| Summary/Abstract |
New Zealand houses are large, often poorly constructed and heated, by OECD standards, and consequently are colder and damper indoors than recommended by the World Health Organisation. This affects both the energy consumption and the health of households. The traditional New Zealand household pattern of only heating one room of the house has been unchanged for decades, although there has been substantial market penetration of unflued gas heaters and more recently heat pumps. This paper describes the residential sector and the results of two community-based trials of housing and heating interventions that have been designed to measure the impact of (1) retrofitting insulation and (2) replacing unflued gas heaters and electric resistance heaters with heat pumps, wood pellet burners and flued gas heaters. The paper describes findings on the rebound effect or 'take-back'-the extent to which households take the gains from insulation and heating improvements as comfort (higher temperatures) rather than energy savings, and compares energy-saving patterns with those suggested by an earlier study. Findings on these aspects of household space heating are discussed in the context of the New Zealand government's policy drive for a more sustainable energy system, and the implications for climate change policy.
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