Abstract
This paper analyses the results of a pilot deep energy retrofit (DER) implementation including the financial perspectives of the stakeholders with the aim of assisting DER policy development. The Multiple Beneficiary Analysis (MBA) provides technical and energetic details for a recent 12-unit DER social housing project and quantifies the multiple direct and indirect benefits – e.g. financial, economic and societal to enable a stakeholder (beneficiary) analysis. The analysis is apposite given the urgent need for effective policy development in order to enable the achievement of the low-energy retrofit mandated by the EU. The MBA finds that the stakeholder who benefits most (the tenant) makes no financial contribution to the higher standards and while the Central Exchequer also benefits significantly, the stakeholder who makes the upgrade decision (landlord) is financially dis-incentivised. Given the significant benefits which accrue to the Central Exchequer, there is an opportunity for strategic investment by the government to unlock the benefits of low energy dwellings. This would simultaneously realise ongoing financial benefits, “seed” the capability within industry and crucially increase the knowledge and understanding of low energy dwellings which is necessary to enable widespread adoption. The key finding is that despite potential returns of approximately twice the investment, and the urgent need to retrofit existing buildings, the required DER uptake is unlikely as the decision-makers require financial support to unleash the multiple benefits of energy efficient dwellings. A self-financing support is suggested for the case study for consideration.
Highlights
1.1 Overview & Objectives The Energy Performance of Buildings Directive (EPBD) requires that a clear vision for a decarbonised building stock by 2050 be set out in national roadmaps across the EU for renovation with concrete milestones and measures [1]
In 2017, the Sustainable Energy Authority of Ireland (SEAI) launched the Deep Energy Retrofit (DER) Pilot Programme[4] to inform the approach towards a large scale deep retrofit of the housing stock, and by the end of 2019, 325 homes were upgraded, 12 of which have undergone a Post-Occupancy Evaluation (POE) and are considered here
Considering indirect benefit, the benefits range between 143% and 192% of the €339k invested
Summary
1.1 Overview & Objectives The Energy Performance of Buildings Directive (EPBD) requires that a clear vision for a decarbonised building stock by 2050 be set out in national roadmaps across the EU for renovation with concrete milestones and measures [1]. The POE has detailed significant reductions in energy consumption from the worst Building Energy Rating (BER) of (F&G) to the best (A) along with high internal temperatures and high occupant satisfaction rates. This analysis quantifies costs and estimates the multiple financial benefits (both direct and indirect) for the tenant, landlord and government in order to determine the financial attractiveness of the approach. The benefits are assigned to the beneficiaries of tenant, Central Exchequer or Housing Association/Local Authority (HA/LA) In this specific case study, WCC are responsible for providing the social housing, but HAs provide social housing, and play the same stakeholder role. 4 x "F", 8 x "G" 1 x A1, 10 x A2, 1 x A3 Table 1.1 Energy Efficiency Upgrade Measures
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