Energy renovation of single-family houses in Denmark utilising long-term financing based on equity
Energy renovation of single-family houses in Denmark utilising long-term financing based on equity
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DOI：
10.1016/j.apenergy.2010.12.049
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发表时间：
2011-06
期刊：
影响因子：
11.2
通讯作者：
J. Kragh;J. Rose
中科院分区：
文献类型：
--
作者：
J. Kragh;J. Rose
本文的目的是提出一个经济概述的机会，能源改造的单户住宅在丹麦资助的长期。本文着重分析了节能与投资回报的经济差异。取出长期物业按揭贷款中平均剩余的20%股权，并将其用于广泛的能源改造，既提高了经济效益，又扩大了所包括措施的范围。丹麦大约30%的能源消耗用于空间供暖。现有的100万套单户住宅约占其中的一半，因此，能源改造是减少二氧化碳排放的一个关键因素。结论是，平均而言，每个单户住宅的翻新预算在20，000欧元到40，000欧元之间。房屋的权益特别取决于地理位置和建设期。从经济角度分析了不同的能源改造措施，结果表明，从第一年开始，各种具体措施对房主来说都有积极的经济平衡。然而，节省的能源和投资回报之间的经济平衡在很大程度上取决于假设的未来能源价格。一个例子表明，一个典型的房子从1925年，仍然在其原来的形式，可以产生约€2600年的储蓄为房主，假设未来的能源价格为0.2 €/千瓦时。在目前0.1欧元/千瓦时的能源价格水平下，能源改造对房主来说几乎是经济中性的。
This paper aims to present an economic overview of the opportunities for energy renovation of single-family houses in Denmark financed over the long term. The paper focuses on the economic difference between energy savings and the repayment of investment. Taking out the average remaining 20% equity in long-term property mortgage loans and utilising it for extensive energy renovation improves both the economy and the extent of included measures. Approximately 30% of energy consumption in Denmark is used for space heating. The existing 1 million single-family houses account for approximately half of this, thus making energy renovation a key factor for the reduction of CO2emissions. The conclusions were that in average the possible budget for renovation varied between €20,000 and 40,000 per single-family house. The equity of the house was particularly dependant on geographical location and construction period. Different energy renovation measures were analysed in terms of economy showing that a wide range of specific measures had a positive economic balance for the homeowner from year 1. The economic balance between saved energy and repayment of the investment is however very dependent on the assumed future energy price. An example showed that a typical house from 1925, still in its original form, could yield annual savings for the homeowner of approximately €2600, assuming a future energy price of 0.2 €/kWh. At the current energy price level of 0.1 €/kWh energy renovation in general is almost economically neutral for the homeowner.