This report documents the results of an analysis of the electric end-use energy efficiency potential in the U.S. single-family detached housing stock. Technical and economic potential estimates inform the role that residential energy efficiency plays in addressing the objectives of reliable, affordable, and clean electricity for residential end uses.

This report is part of a series of "baseline" reports intended to inform the second installment of the Quadrennial Energy Review (QER 1.2). QER 1.2 provides a comprehensive review of the nation's electricity system and cover the current state and key trends related to the electricity system, including generation, transmission, distribution, grid operations and planning, and end use. The baseline reports provide an overview of elements of the electricity system. This report focuses on end uses, electricity consumption, electric energy efficiency, distributed energy resources (DERs) (such as demand response, distributed generation, and distributed storage), and evaluation, measurement, and verification (EM&V) methods for energy efficiency and DERs.

This report aims to improve low and moderate income (LMI) stakeholdersÕ understanding of financing options for LMI communities. It discusses the advantages and disadvantages of different options, consumer protections to consider, and lessons learned. LMI stakeholders addressed by this report include state and local policymakers, state utility regulators, program administrators, financial institutions, and consumer advocates.

This market snapshot of HVAC installation verification tools illustratively presents the categories and uses for the growing market of tools.         

This HVAC verifications tool selection guide includes a cross-walk of tool categories with target user audience, benefits and features. This matrix can assist contractors, programs, utilities and others in selecting the appropriate resources to support installation and performance measurement.

This report updates ACEEE's 2013 assessment of multifamily energy efficiency programs in US metropolitan areas with the most multifamily households. Using housing, policy, and utility-sector data from 2014 and 2015, this report documents how these programs have changed in the context of dynamic housing markets and statewide policy environments. The report also offers an analysis of the number, spending, offerings, and targeted participants of current programs and their potential for further expansion.

This document covers preliminary findings from research on installation practices for the residential retrofit HVAC market.

Elevate Energy constructed a database of 143,000 Chicago multifamily buildings and segmented them based on age, size, and other traits in order to better understand the Chicago multifamily sector. The segmentation findings point to opportunities to improve ChicagoÕs energy efficiency programs. The size of the unsubsidized lower-cost multifamily market in Chicago, added benefits of improved health outcomes for low-income residents, and greater investment in disadvantaged neighborhoods strengthen the case for prioritizing multifamily market for energy efficiency. The report is organized into three parts. The first part describes the datasets used to build a database of ChicagoÕs multifamily buildings. The second reviews key findings from the analysis. The third section provides recommended improvements to efficiency programs based on the segmentation.

The Midwest is home to a significant stock of multifamily buildings that represent a huge energy savings opportunity. Multifamily housing makes up 11 to 22% of the housing stock in Midwest states. The majority of multifamily housing is renter-occupied, and a large proportion of those renters are low income customers for whom the cost of high utility bills is the most burdensome. This report examines the mixture of multifamily energy efficiency programs in four states Ð Indiana, Ohio, Minnesota and Iowa Ð since 2010. The analysis looks at investment, energy savings and program models offered in each state. These states are not the only states working on multifamily energy efficiency in the Midwest, but they provide a good contrast in terms of energy efficiency policies and performance, as well as having sufficient available data for the analysis.

This report examines how State Energy Offices and state-level partners are supporting growth and uptake of Commercial Property Assessed Clean Energy (C-PACE) financing around the country. The report offers examples, insights, and strategies for State Energy Offices, green banks, state financing agencies, and other public and private entities to catalyze, accelerate, organize, and expand C-PACE markets.

The NorthernSTAR and U.S. Department of Energy Building America Program partnership investigated a new model to deploy building science-guided performance solutions to homeowners. This research explored three aspects to market delivery:
1. Understand the homeowner's motivations regarding investing in building science-based performance upgrades.
2. Determine a rapidly scalable approach to engage large numbers of homeowners directly through existing customer networks.
3. Access a business model that will manage all aspects of the contractor-homeowner performance professional interface to ensure good upgrade decisions throughout time.

This report details opportunities for scaling up program activity and increasing savings from programs reaching the people who need it most. It discussed best practices from existing programs for overcoming many of the key challenges that program administrators face, including how to address housing deficiencies that prevent energy efficiency upgrades, how to address cost effectiveness challenges, and how to serve hard-to-reach households.

This report explores how governments and energy efficiency implementers could help stakeholders better analyze and act upon building performance data to unlock savings.

Several recent studies purport to show that particular energy efficiency programs and policies do not work or are too expensive. This short paper is written for people who are not evaluation experts and are trying to understand what conclusions they can take from these studies. We examine many of these papers and find that while they do have some useful findings, they often include a variety of unreasonable assumptions or outright mistakes that undermine their conclusions. Based on this review, we offer several recommendations on ways we can constructively move forward.

Through field-testing and analysis, this project evaluated whole-building approaches and estimated the relative contributions of select technologies toward reducing energy use related to space conditioning in new manufactured homes. Three lab houses of varying designs were built and tested side-by-side under controlled conditions in Russellville, Alabama. The tests provided a valuable indicator of how changes in the construction of manufactured homes can contribute to significant reductions in energy use.

The primary objective of the quantitative research phase of this survey was to get market-based feedback and insights in the following areas to assist the industry in better serving its constituents, including: insights as to major challenges that industry is facing and potential support that organizations could provide and feedback on how industry organizations could add value for constituents in the future.

Energy burden is the percentage of household income spent on home energy bills. In this report, ACEEE, along with the Energy Efficiency for All coalition, measures the energy burden of households in 48 of the largest American cities. The report finds that low-income, African-American, Latino, low-income multifamily, and renter households all spend a greater proportion of their income on utilities than the average family. The report also identifies energy efficiency as an underutilized strategy that can help reduce high energy burdens by as much as 30%. Given this potential, the report goes on to describe policies and programs to ramp up energy efficiency investments in low-income and underserved communities.

The report analyzes data from the U.S. Census BureauÕs 2011 and 2013 American Housing Survey to determine energy burden values for 48 of the largest U.S. Cities. On average, low-income households pay 7.2 percent of household income on utilitiesÑmore than twice as much as the median household and three times as much as higher income households. If low-income housing stock were brought up to the efficiency level of the average U.S. home, this would eliminate 35 percent of the average low-income energy burden of low-income households. The second half of the report focuses on strategies for alleviating high energy burdens including policies and programs to increase the impact of energy efficiency initiatives in these communities.

This report was developed to help inform national stakeholders about the strategies that have been used to achieve deep energy savings in the multifamily housing sector through energy efficiency upgrades. These strategies could be used as models in areas where utility program administrators and policymakers seek to achieve deep energy savings in the multifamily building stock for the purposes of reducing energy costs, creating comfortable and healthy homes, meeting regulatory requirements, or reducing the environmental impacts of energy consumption. This report includes a national multifamily market characterization, barriers and opportunities for program and policy efforts, and eight exemplary case studies from across the country.

The research described in this report holds great potential to significantly improve the process for including energy efficiency in developing and implementing federally funded multifamily rehabilitation projects through the USDA, the U.S. Housing and Urban Development (HUD) Low Income Housing Tax Credit, and other programs.

Residential air-source heat pumps (ASHP) are a heating and air-conditioning technology that use electricity to provide a combination of space heating and cooling to homes. A new generation of ASHPs has come to market over the past five years. This report evaluates the key market barriers as well as potential opportunities to leverage. Based on an assessment of the regional ASHP market, it is clear that while ASHPs have established a viable and growing market, there remains a significant opportunity to further accelerate adoption of the technology and in the process achieve energy and cost savings to the Northeast and Mid-Atlantic region.

The Regional Roundup of Energy Efficiency Policy is intended to give policymakers, regulators, efficiency proponents, program administrators and other stakeholders a comparative view of the progress of energy efficiency policies and programs across the Northeast/Mid-Atlantic region. Along with state-level highlights, the report examines regional trends and shared challenges in harnessing the potential of energy efficiency to meet today’s pressing energy and environmental challenges.

This guide for states highlights energy efficiency as a least-cost strategy to meet air pollution reduction and other policy objectives, including energy affordability and reliability. It presents established policy and program “pathways” to advance demand-side energy efficiency.

This report provides information and tools for policymakers, regulators, utilities, shared renewable energy developers, program administrators and others to support the adoption and implementation of shared renewables programs specifically designed to provide tangible benefits to low income and moderate income individuals and households.

The Southeast Energy Efficiency Alliance (SEEA) has prepared this assessment of the Southeast’s multifamily sector to better understand the current stock of multifamily units; regional and state multifamily construction trends; utility multifamily energy efficiency programs; and state and local policies and programs focused on the multifamily sector.

Improving energy efficiency can make energy more affordable, transform unhealthy buildings into comfortable homes, and create thousands of jobs. While there are opportunities across the residential, commercial, and industrial sectors, some of the greatest need and most profound gains can be made in low- and moderate-income housing. This report outlines why focusing on energy efficiency programs to serve North Carolinians of modest means can return benefits to everyone across the state, and discusses many of the steps that can be taken to increase the adoption of energy efficiency in North Carolina.

This study calculates the potential energy savings from the implementation of energy efficiency measures in MissouriÕs affordable multifamily sector. This research identifies the maximum achievable potential savings and benefits that can be captured over the 20-year period from 2015-2034 through the deployment of affordable multifamily energy efficiency programs. The study found that there is significant as yet untapped energy savings potential in MissouriÕs affordable multifamily housing.

NEEP has been tracking the residential lighting market for several years and has provided analysis in many reports. As the transformation of this complex market gains traction, we find the conversation and need for new information narrowing to one key topic: LEDs. While CFLs continue to play a role in residences and amongst Northeast and Mid-Atlantic program administrators, the LED has transitioned into the starring role of the residential lighting show.

This report represents NEEP’s annual assessment of the major policy developments of 2014, as well as its look into the immediate future, where NEEP gauge states’ progress toward capturing cost-effective energy efficiency as a first-order resource. While looking at the region as a whole, NEEP also provides summary and analysis of some of the biggest building energy efficiency successes and setbacks from Maine to Maryland — including significant energy efficiency legislation and regulations and changes in funding levels for energy efficiency programs.

This report is targeted at both policymakers and program administrators who are less familiar with secondary markets and their significance in the energy efficiency context, as well as those that are more familiar with these concepts and may be actively considering secondary market strategies. It covers how efficient access to capital from secondary markets -- reselling energy loans to investors to replenish program funds -- is being advanced as an important enabler of the energy efficiency industry “at scale.”

This study was conducted on behalf of the Colorado Energy Office to provide an analysis of the impact of energy efficiency on the home buying process. It highlights the appraisers’ dependence on Realtor‐supplied data and clearly illustrates the need for appraisers to be competent on items related to energy efficiency; in as far as these items are relevant to the appraiser’s specific assignment, scope of work and market area.

Real estate professionals are increasingly aware that today’s homebuyers consider heating and cooling costs, efficient appliances, and efficient lighting to be important factors in home purchase decisions. Residential energy efficiency and real estate stakeholders, however, agree that the home resale process frequently fails to account for the value of high-performance home features. If investments in energy efficiency were more accurately reflected in home resale prices, homeowners could have greater confidence that these investments would be recouped at resale, and they might make more investments in efficiency.

Energy efficiency collaboratives vary greatly and are typically designed for a specific jurisdiction, making them hard to compare side by side. This guide seeks to highlight a few common elements and draw conclusions on the overall effectiveness of specific characteristics of collaboratives. This guide defines and examines four different types of collaboratives in terms of their origin, scope, decision-making method, membership, duration, available resources, and how they interact with and influence their respective commissions.

This case study includes a baseline assessment of "green fields" that highlight the green and energy-efficient aspects of homes in the MLS and the market for high-performance homes (HPHs) in the District of Columbia. The report also sets the stage for the upcoming release of additional green fields in the Metropolitan Regional Information System (MRIS), the local MLS in the Washington metropolitan region.

This online guide provides step-by-step guidance and resources for local governments to plan, implement, and evaluate climate, energy, and sustainability projects and programs to reduce greenhouse gas emissions and adapt to climate change impacts. It captures lessons learned and effective strategies used by local governments, breaks down program implementation into concrete steps, and curates resources to help local governments find the information they need. The framework was developed with extensive input from local government stakeholders, including EPA’s Climate Showcase Communities.

This factsheet highlights the benefits of increasing the energy efficiency of multifamily housing, which saves energy, improves residents' health and comfort. and maintains reasonable rents. This helps families, communities, and affordable building owners.

The purpose of this report is to demonstrate the potential for HEMS as an evolving avenue to deeper residential energy savings, and it explains, in detail, the variations and characteristics of HEMS; what the market is and who the major market players are; what the major barriers to implementation look like; and finally, it attempts to outline potential program solutions with HEMS at the core of the strategy.

This report documents the significant economic and energy savings potential from making multifamily affordable housing more energy-efficient. The study identifies the maximum achievable potential savings and benefits that can be captured over the 20-year period from 2015-2034 in the multifamily affordable housing sector. Based on the data gathered from a sample of states across the country, the report estimates that energy efficiency programs in multifamily affordable housing could cut electricity usage by as much as 32 percent and natural gas by 24 percent. The study includes specific findings for Georgia, Illinois, Maryland, Michigan, Missouri, New York, Pennsylvania, and Virginia.

Residential multi-family properties represent not only a significant share of the housing stock in the Northeast and Mid-Atlantic region, but a significant opportunity to capture energy efficiency savings through cost-effective retrofit measures. The nature of the multi-family housing stock Ð and, in particular, the small multi-family sector Ð creates a unique set of challenges. This overview page outlines the market barriers and challenges faced by small multi-family properties and offers recommendations for policymakers and other stakeholders to make the multi-family sector a key outreach sector target, both in terms of policies and program strategies.

This study documents the market valuation associated with the predominant green and energy efficiency home certifications used in the Northwest. Regional markets with a track record of including green building and energy efficiency information in MLS databases have lacked a recent, thorough, locally relevant analysis of the potential value of “higher performing” homes in current market conditions. Real property appraisers require a reliable, localized, granular analysis they can use in their home valuation calculations. The analysis contained in this report addresses this identified market need.

Low-income energy efficiency programs provide financially vulnerable utility customers with important energy savings. To date, low-income programs have faced challenges in driving participation -- fueling myths that suggest low-income populations are difficult to reach. This paper explores these myths in turn.

This fact sheet outlines the opportunities and challenges to be considered in expanding energy efficiency in the affordable multifamily housing sector. Making affordable rental housing more energy efficient is a cost-effective way to reduce energy consumption, maintain housing affordability, create healthier and more comfortable living environments for moderate- and low income families, and reduce pollution.

This document summarizes top takeaways shared by Better Buildings Residential Network members on Peer Exchange Calls, from tips to collaborating with utilities to cost-effective rebate models.

This Better Buildings Residential Network Partnerships Toolkit includes templates, tools, guides, and examples to help energy efficiency organizations engage in partnerships that leverage resources and strengthen their programs.

SEEA created this document to inform the planning, design and delivery of early-stage energy efficiency programs in the Southeast. This document captures general concepts essential to the successful development and implementation of robust program portfolios, as well as lessons learned from prior experience on the regional and national levels.

This guide is designed to serve as a "how-to" reference for island communities (or small, similarly sized, more isolated communities) that want to develop and implement a residential energy-efficiency and conservation program. The purpose of this guide is to help communities chart a course for successful program development based on the lessons learned during implementation and operation of RePower Bainbridge, an energy-efficiency program on Bainbridge Island, Washington.

Residential multifamily properties represent not only a significant share of the housing stock in the Northeast and Mid-Atlantic region, but a significant opportunity to capture energy efficiency savings through cost-effective retrofit measures. The nature of the multifamily housing stock Ð and, in particular, the small multifamily sector Ð creates a unique set of challenges that have until now largely stymied the retrofit market. Yet some successful models for reaching the small multifamily sector have begun to emerge. This paper is meant to inform energy efficiency stakeholders and policymakers about best practices gleaned from examining existing programs and policies addressing energy efficiency in the small multifamily housing market; to identify continuing gaps in the ability to penetrate that market to an even greater extent; and to present recommendations for programs and policies that may hold the promise of additional energy savings.

Multifamily affordable housing is full of untapped energy efficiency potential. This overview provides context and best practices for creating effective programs to capture this potential. With a better understanding of these considerations, stakeholders can start to build a more robust network of leaders and practitioners in affordable multifamily housing and realize the vast environmental, economic, and social potential of delivering energy efficiency for all.

Multifamily housing retrofits provide a rich opportunity to reap energy efficiency (EE) savings. Despite this opportunity, the multifamily market has not captured investment needed to realize the energy savings, and the affordable housing sector faces additional investment barriers. This paper makes the case for the implementation of energy retrofits in affordable multifamily buildings by presenting the non-energy benefits (NEBs) associated with such upgrades.

This guide/toolkit provides step-by-step recommendations on how policymakers can go about devising successful energy disclosure policies. It discusses the who, what, where, when, why, and, most importantly, how, for creating disclosure policies for the residential sector.

Research reveals a whole range of unmet housing-related desires in America -- gaps between what Americans have and what they say they need or want. The Demand Institute surveyed more than 10,000 households about their current living situation and what’s important to them in a home. The survey represents all U.S. households: renters and owners; movers and non-movers; young and old and finds that unsatisfied needs and desires cut across the entire population.

This report presents the cost of saving energy through efficiency programs funded by utility customers in the period 2009-2011 at the national and regional level for all sectors and the most prevalent program types.

This guide introduces the Community Energy Strategic Plan (CESP) approach, a step-by-step process for creating a robust strategic energyÊ plan. The guide offers tools and tips to complete each step and highlights examples from successful planning efforts around the country.

The study was completed on behalf of the Minnesota Department of Commerce to characterize energy use in the state's multifamily sector and to identify untapped energy efficiency opportunities. Working with Franklin Energy, the field study gathered characteristic data for 120 representative buildings across the state as well as survey data of both building owners and tenants. Using this data as well as a utility billing analysis, the Energy Center of Wisconsin (now Seventhwave) developed an in-depth characterization for a hard-to-reach sector in Minnesota that had not been, up until this point, studied to this degree.

This Energy Programs Consortium report identifies barriers that have been found to increase investment in low income multi-family housing as well as current efforts to address those barriers and increase building owner investment. This report also identifies strategies for deploying public and provide sector resources that can be used to increase the effectiveness of current efforts to address energy efficiency barriers in the low income multi-family housing sector.

This guide outlines opportunities and strategies to overcome obstacles preventing utility-sponsored investments in multifamily affordable housing through collaboration between the housing and utility sectors.

The objective of this document is to help state and local governments understand the role of program administrators (PAs) and assist them in developing successful partnerships with utility and other energy efficiency PAs. The majority of this paper presents information on partnering and leveraging current energy efficiency activities. However, it also includes information for governments in areas without active PAs, as well as an appendix with a case study describing how state and local governments can fill gaps and administer programs in the absence of a PA.

This report provides an assessment of the current landscape of multifamily energy efficiency programs in the 50 metropolitan areas with the largest multifamily housing markets. The authors describe spending on utility customer-funded programs for the primary utilities in each metropolitan area. Additionally, they identify the specific opportunity in each metropolitan area to scale up multifamily programs based on a three-part analysis of: (1) local housing market characteristics; (2) the scope of current utility customer-funded energy efficiency programs; and (3) the statewide policy environment and potential for local partnerships with non-utility-funded energy efficiency programs.

This report develops projections of future spending on, and savings from, energy efficiency programs funded by electric and gas utility customers under three scenarios through 2025.

This white paper provides energy efficiency program sponsors and other stakeholders in the home performance industry with methods to document efficiency improvements and incorporate them into the real estate value chain. Making information about energy efficiency improvements visible to home buyers and others involved in a home sale transaction will play a crucial role in ensuring that improvements are fairly valued at the time an existing home is sold.

This report explores the best practices that utilities should undertake in the development and implementation of energy efficiency programs. The report calculates the impact that investing in energy efficiency will have on jobs, household income, and state and regional economies, along with the other public health benefits such as reducing pollution.

This document is the appendices to the main report presenting the preliminary process and market evaluation of the Better Buildings Neighborhood Program.

This report provides a forecast of how building energy codes and appliance efficiency standards are likely to capture significant energy efficiency savings through 2025.

This document provides sample policy language based on a synthesis of existing state and local policies, and discussion on key provisions, for the design of a commercial benchmarking and disclosure policy.

This report serves as a resource for program administrators and building contractors who are or may be interested in starting or expanding their services into the residential energy efficiency market.

This guide shows HVAC contractors how to get started in the home improvement market. It explains the approach of treating a house like a system and provides step-by-step instructions on setting up a home performance contracting business.

This plan was jointly developed by gas and electric companies in the state of Massachusetts to set aggressive goals for 2013-2015 through a sustained and integrated statewide energy efficiency effort in accordance with Green Communities Act.

This report profiles the early results of a diverse range of small- to medium-sized American cities with different economic and energy profiles that are pioneering the clean energy economy. Many communities used federal grants to jumpstart long-term strategies to test and refine various clean energy and energy efficiency solutions. Others developed innovative financing strategies in the absence of grant money. These city-led efforts to catalyze local clean energy economic development are important to watch as federal grants sunset, especially in the absence of a comprehensive national energy or climate policy.

This report presents the preliminary process and market evaluation of the Better Buildings Neighborhood Program. As part of the evaluation, the report identifies the factors most strongly correlated with the 10 most successful grantees' performance and offers recommendations to the Energy Department and grant recipients for the final program year.

This publication outlines the various benefits of supporting investments in energy efficiency in multifamily affordable housing. Multifamily home energy retrofits ensure the long-term viability of existing affordable housing, support job creation with broad economic impacts, unlock a range of benefits for building residents, and can lead to significant reductions in greenhouse gas emissions.

This report provides state and local policymakers with information on successful approaches to the design and implementation of residential efficiency programs for households ineligible for low-income programs.

This report provides data from nationwide utility customer satisfaction surveys and two case studies to encourage utilities to offer high-quality energy efficiency programs and services for their customers.

The Residential Retrofit Program Design Guide focuses on the key elements and design characteristics of building and maintaining a successful residential energy upgrade program. The material is presented as a guide for program design and planning from start to finish, laid out in chronological order of program development.

This report helps policymakers understand how electric and natural gas utilities can achieve greater efficiency by establishing numeric energy savings targets and goals for energy efficiency programs.

This report describes how utility planning processes that allow demand-side resources to compete with supply-side resources can promote cost-effective energy efficiency.

This report identifies and discusses factors that should be considered in evaluating model choices for administering and implementing ratepayer funded energy efficiency programs.

This paper, which is based on detailed case studies of nine existing state and local programs, presents recommendations for energy upgrade programs to facilitate industry growth and support contractor business models.

This report presents best practices for operating successful portfolio-level efficiency programs, including assessing efficiency potential, cost-effectiveness screening, and developing a portfolio of approaches.

This guide provides background on the home improvement market in the U.S. and Canada and end users and systems in existing homes, as well as a description of energy efficiency program approaches and strategies.

This report considers consumers' perspectives on policy and regulatory issues associated with the administration of energy efficiency investments funded by ratepayers of electric and natural gas utilities.

This report summarizes the scale and economic value of energy efficiency for reducing carbon emissions and discusses barriers to achieving the potential for cost-effective energy efficiency.

This guide helps states and localities develop voluntary or mandatory programs that go well beyond minimum code requirements for new buildings. It addresses energy efficiency materials and resource conservation, water efficiency, indoor environmental quality, and site development and land use.

This report provides an overview of market segmentation purpose, examples and methodologies.

This report provides guidance on determining the efficiency potential in a utility footprint, state, or region; evaluating efficiency as a supply-side resource; and developing detailed efficiency program plans.

This report describes the key issues, best practices, and main process steps for integrating energy efficiency into resource planning on an equal basis with other resources.

The purpose of this study is to furnish comprehensive information on ratepayer-funded low-income energy programs. This study includes information on and analysis of the energy needs of low-income households, the legal and regulatory framework supporting ratepayer-funded programs, program design options, and the findings from evaluations of program effectiveness.

This report provides comprehensive information on state, federal, local, and utility incentives and policies that are in place to support renewable energy and energy efficiency.