The Next Step Toward Widespread Residential Deep Energy Retrofits

McIlvaine, J.; Martin, E.; Saunders, S.; Bordelon, E.; Baden, S.; Elam, L.

doi:10.2172/1220121

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…An additional set of 70 Central and North-Florida dwellings were energy retrofitted as part of a separate research effort (McIlvaine et al, 2013). These energy upgrades were add-ons to rehabilitation/remodeling projects otherwise being carried out by affordable housing partners in the state of Florida.…”

Section: Affordable Housing Partner Dersmentioning

confidence: 99%

Emerging Pathways to Upgrade the US Housing Stock: A Review of the Home Energy Upgrade Literature

Walker¹,

Less²,

Casquero-Modrego³

2021

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This review addresses whole home energy upgrades targeting deep energy reductions (i.e., Deep Energy Retrofits, or DERs), from 30 to >50% site energy savings. The intent of this work is to characterize how energy upgrade projects and programs have evolved and improved over the past decade, and to identify what changes are needed to drive expansion of the U.S. retrofit market in such a way that addresses carbon emission from buildings, improves resilience and upgrades the housing stock for the 21 st century. The topics covered in this review are wideranging, including trends in U.S. and European retrofit programs, measure costs (e.g., ductless heat pumps, heat pump water heaters, exterior wall insulation), emerging technologies, advancements in simulation tools, surveys of energy upgrade homeowners and practitioners, business economics (e.g., soft costs, gross margins), and health effects. Key changes in project design noted in this review include the: (1) electrification of dwellings with rapidly improving heat pump systems and low-cost PV technology, (2) shift away from high-cost super-insulation strategies and towards more traditional home performance/weatherization envelope upgrades, (3) recognition of the importance of when energy is used and from what fuel sources in terms of both energy cost and carbon emissions, and (4) emerging smart home technologies, such as batteries or thermal storage, smart ventilation and HVAC controls, and energy feedback devices. Promising program design strategies covered in this review include:(1) end-use electrification programs, (2) novel financing approaches (e.g., Pay-As-You-Save and local lender networks), (3) Pay-for-Performance incentive structures, (4) securitization of portfolios of upgraded homes as investment products, and (5) One-Stop Shop programs that integrate financing, project management, design and support services. In addition to these project-and program-innovations, the industry should adopt new project performance metrics, namely those for carbon, peak demand and energy storage, along with metrics characterizing resilience and health. Market drivers are needed to spur widespread energy upgrades in the U.S. housing stock, which will require valuation of DERs by the real estate industry, reduced project costs (in part by cutting soft costs), and projects designed to appeal to homeowners while being enjoyable and profitable for contractors.

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Section: Affordable Housing Partner Dersmentioning

confidence: 99%

Emerging Pathways to Upgrade the US Housing Stock: A Review of the Home Energy Upgrade Literature

Walker¹,

Less²,

Casquero-Modrego³

2021

View full text Add to dashboard Cite

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“…Several studies have identified a lack of project financing as a barrier to home upgrades [22,30,37]. However, these and other studies have shown that the majority of projects do not use financing [3,58,59].…”

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confidence: 99%

Home Energy Upgrades as a Pathway to Home Decarbonization in the US: A Literature Review

2022

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This work aims to characterize how home energy upgrade projects and programs in the US have evolved over the past decade. It also identifies what changes are needed to drive expansion of the US energy retrofit market in such a way that addresses carbon emissions from buildings, improves resilience and upgrades the housing stock. This review focuses on whole-home energy upgrades, targeting deep energy retrofit savings of >30%. The topics we cover include trends in home electrification, US and European home energy upgrade programs, energy upgrade measure costs, business economics, and health effects. Key changes in project design noted in this review include: (1) the electrification of dwellings with rapidly improving heat pump systems and low-cost solar photovoltaic technology; and (2) a shift away from high-cost building envelope strategies and towards more traditional home performance/weatherization envelope upgrades. Promising program design strategies covered include: (1) end-use electrification programs; (2) novel financing approaches; (3) the use of carbon-based program and project metrics; and (4) “one-stop shop” programs. Based on the existing market barriers, we suggest that the industry should adopt new project performance metrics. Additionally, market drivers are needed to spur widespread energy upgrades in the US housing stock. Costs must be reduced, and projects designed to appeal to homeowners and contractors.

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The Next Step Toward Widespread Residential Deep Energy Retrofits

Abstract: iv [This page left blank]v

Cited by 2 publications

References 6 publications

Emerging Pathways to Upgrade the US Housing Stock: A Review of the Home Energy Upgrade Literature

Emerging Pathways to Upgrade the US Housing Stock: A Review of the Home Energy Upgrade Literature

Home Energy Upgrades as a Pathway to Home Decarbonization in the US: A Literature Review

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