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Showing results 1 - 51 of 51

Author(s)
American Council for an Energy-Efficient Economy
Publication Date
Organizations or Programs
Energy Trust of Oregon,
Focus on Energy,
Southwestern Electric Power Company (SWEPCO),
Oklahoma Gas and Electric Company,
Pacific Gas & Electric Company (PG&E),
NV Energy

This study provides an overview of practices for quantifying and reporting avoided energy-water costs from demand-side measures. It also summarizes the regulatory guidance for incorporating water savings into cost-effectiveness screening for energy efficiency programs.

Author(s)
Focus on Energy
Publication Date
Organizations or Programs
Focus on Energy

This tool from Focus on Energy connects Wisconsin residents and businesses with local home performance contractors that provide various energy efficiency services and offers a list of each contractor's skills.

Author(s)
Focus on Energy
Publication Date
Organizations or Programs
Focus on Energy

This calendar provides Focus on Energy's participating contractors with information on upcoming technical training opportunities, such as conferences, lighting demonstrations, and home efficiency sales and marketing workshops.

Author(s)
Focus on Energy
Publication Date
Organizations or Programs
Focus on Energy

The Trade Ally Code of Conduct outlines the expectations and guidelines related to participation as a registered Trade Ally in the Focus on Energy Program.

Author(s)
Energy Futures Group,
Lawrence Berkeley National Laboratory,
U.S. Department of Energy
Publication Date
Organizations or Programs
Efficiency Maine,
Connecticut Home Energy Savings Program. PSE&G's Home Performance Direct Program,
Kentucky Power's Modified Energy Fitness Program,
Efficiency Vermont,
Energize Connecticut,
Mass Save,
EmPOWER Maryland,
Focus on Energy,
Austin Energy

This report provides a comprehensive review and analysis of home energy upgrade programs with proven track records, focusing on those with robustly verified savings and constituting good examples for replication. This meta-analysis describes program models and implementation strategies for direct install upgrades; heating, HVAC replacement and early retirement; and comprehensive, whole-home upgrades.

Peer Exchange Call: Home Performance with ENERGY STAR and Home Energy Score Integration

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
Focus on Energy,
Energize Connecticut,
Columbia Water & Light

Focus on Energy, Columbia Water & Light, and utilities from the Energize Connecticut program share how they integrate and implement the Home Energy Score and Home Performance with ENERGY STAR programs.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
Consumers Energy Smart Energy Challenge,
Focus on Energy

This summary from a Better Buildings Residential Network peer exchange call focused on key challenges and opportunities to deploy interactive engagement strategies including customer segmentation, loyalty and reward programs, and gamification. It features speakers from Fiveworx, ICF International, and Cool Choices.

Author(s)
The Cadmus Group, Inc.
Publication Date
Organizations or Programs
Focus on Energy

This Technical Reference Manual (TRM) defines the consensus calculations of the electric and natural gas energy savings and the electric demand reductions, achieved from installing energy efficiency and renewable energy measures that are supported by Focus on Energy programs.

Author(s)
NMR Group, Inc.
Publication Date
Organizations or Programs
Eversource,
United Illuminating,
Connecticut Home Energy Solutions (HES),
Mass Save,
National Grid,
Efficiency Maine,
Efficiency Vermont,
New York State Energy Research and Development Authority (NYSERDA)

This report identifies opportunities for Connecticut's Home Energy Solutions program (HES) to increase savings related to air sealing, duct sealing, and insulation.

Author(s)
Focus on Energy
Publication Date
Organizations or Programs
Focus on Energy

Focus on Energy created these co-branding and logo requirements that trade allies, or participating contractors, must adhere to when creating marketing materials related to the program.

Author(s)
DNV GL
Publication Date
Organizations or Programs
National Grid

This report presents the results of the evaluation of National Grid Rhode Island's 2014 EnergyWise program. EnergyWise is designed to achieve energy savings in single family (1-4 unit) residential homes by directly installing efficient lightbulbs and water heating measures, providing devices for homeowner use, and offering building shell retrofit rebates.

Author(s)
DNV GL
Publication Date
Organizations or Programs
National Grid

This report provides the electric and natural gas impacts from the suite of National Grid Multifamily Retrofit Programs as determined through a billing analysis.

Author(s)
American Council for an Energy-Efficient Economy
Publication Date
Organizations or Programs
Focus on Energy,
National Grid Rhode Island,
DC Sustainable Energy Utility Low-Income Multifamily Initiative,
Bay Area Regional Energy Network Multifamily Building Enhancements,
Con Edison Multifamily Energy Efficiency Program,
Con Edison Multifamily Low Income Program,
Puget Sound Energy,
Xcel Energy,
Elevate Energy,
Energy Trust of Oregon,
Public Service Electric and Gas Multifamily Program,
Pacific Gas & Electric Company,
Arizona Public Service (APS) Company,
Austin Energy,
Efficiency Vermont,
CenterPoint Energy,
New York State Energy Research and Development Authority (NYSERDA)

The multifamily sector can be hard to reach when it comes to energy efficiency programs. Besides being diverse and complex, the sector presents a unique set of challenges to efficiency investments. The result is that multifamily customers are often underserved by energy efficiency programs. Drawing on data requests and interviews with program administrators, this report summarizes the challenges to program participation and identifies best practices that programs can use to reach and retain large numbers of multifamily participants.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
Focus on Energy,
Denver Energy Challenge

This peer exchange call summary focused on best practices for building and maintaining a robust contractor network.

Author(s)
Navigant Consulting, Inc.,
ILLUME Advising, LLC
Publication Date
Organizations or Programs
National Grid,
Eversource

This report summarizes the impact analyses of National Grid's and Eversource Energy's Home Energy Report (HER) programs. The evaluation team conducted three distinct impact analyses related to these HER programs: Cohort-Specific Impact Analysis; Mapping Analysis; and Dual Treatment Analysis.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
EnergySmart,
Bend Energy Challenge,
Mass Save,
Focus on Energy,
Enhabit

This document summarizes top marketing and outreach takeaways shared by Better Buildings Residential Network members during spring 2015 Peer Exchange Calls.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
Focus on Energy,
Sacramento Municipal Utility District (SMUD),
Mass Save

This summary from a Better Buildings Residential Network peer exchange call focused on approaches to generate demand for energy efficiency upgrades at multifamily buildings.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton

In this video interview segment, Yvonne Kraus of Conservation Services Group describes how the program aligned its goal of increasing energy efficiency with the community's goal to avoid building a new electrical substation.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton

In this video interview segment, Yvonne Kraus of Conservation Services Group describes how energy advisors were an important strategy for building trust with customers in the community.

Author(s)
RePower Bainbridge,
Conservation Services Group,
U.S. Department of Energy
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton
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.
Author(s)
Cynthia Adams, Local Energy Alliance Program,
Larry Earegood, Consumers Energy (MI),
John Schott, NYSERDA,
Gavin Hastings, Arizona Public Service,
Emily Salzberg, Washington State University Energy,
Adam Buick, Community Power Works (WA),
Bob Knight, BKi
Publication Date
Organizations or Programs
Arizona Public Service (APS),
Community Power Works,
Energy Upgrade California,
Local Energy Alliance Program (LEAP),
Michigan Home Performance with ENERGY STAR,
New York State Energy Research and Development Authority (NYSERDA),
RePower Kitsap

Quick summaries of strategies various programs have used to improve the efficiency of delivering efficiency.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton
RePower Bainbridge works with local residents to find creative ways to increase energy awareness, including developing an innovative Island Energy Dashboard, which displays real-time energy use around the island.
Author(s)
American Council for an Energy-Efficient Economy
Publication Date
Organizations or Programs
Columbia Gas of Ohio,
National Grid,
CenterPoint Energy,
Nicor Gas,
United Illuminating Company,
Eversource Energy,
Yankee Gas,
Connecticut Natural Gas,
Southern Connecticut Gas,
Xcel Energy,
Connecticut Natural Gas

This report presents the results of ACEEE's third national review or utility-funded energy efficiency programs, completed in 2013. The report identifies and profiles 63 leading programs that span the wide array of program types offered to utility customers, and highlights key trends and observations that emerged from reviewing these programs.

Author(s)
Conservation Services Group
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton
This infographic summarizes the results of RePower Bainbridge's Final Boarding Call event, providing an effective, engaging way to share program results with partners and other stakeholders.
Author(s)
RePower Program
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton
This document details the procedures for identifying, documenting, and responding to performance problems associated with contractors in the RePower Program of Kitsap County, Washington. It includes example forms and a draft letter to contractors.
Author(s)
RePower Program
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton
This is an application form for contractors (trade allies) interested in participating in the RePower Program of Kitsap County, Washington. The form describes the benefits and requirements for participating contractors, and allows contractors to identify the specific services they offer.
Author(s)
RePower Kitsap
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton
RePower in Bainbridge Island and Bremerton, Washington developed this manual as a set of rules and requirements for acceptable materials and installation procedures for energy efficiency measures installed in existing homes.
Author(s)
U.S. Energy Information Administration
Publication Date
Organizations or Programs
AEP Ohio,
Alabama Power Company,
Alleghany Power,
Alliant-IPL,
Ameren Illinois Utilities,
Ameren Missouri,
Arkansas Oklahoma Gas Corporation,
Baltimore Gas & Electric Company,
Black Hills Energy,
Board of Public Utilities,
Bonneville Power Administration,
Centerpoint Energy Arkansas Gas,
Commonwealth Edison Company (ComED),
Consumers Energy Company,
Connecticut Energy Conservation Management Board,
Delaware Sustainable Energy Utility,
Delmarva Power & Light,
Detroit Edison Company,
Michigan Consolidated Gas Company,
Dominion North Carolina Power,
DP&L,
Duke Energy,
Duquesne Light,
Efficiency Maine,
Efficiency United,
Efficiency Vermont,
Empire District Electric Company,
Entergy Arkansas,
Entergy New Orleans,
Energy Trust of Oregon,
Eummot,
Florida Public Service Commission,
Hawaii Public Utilities Commission,
Idaho Power,
Kansas City Power & Light,
Long Island Power Authority (LIPA),
Louisiana Department of Natural Resources,
NSTAR,
National Grid,
Massachusetts Cape Light Compact,
Massachusetts Department Of Energy Resources,
Massachusetts Energy Efficiency Advisory Council,
Maryland Public Service Commission,
Metropolitan Edison Company,
Michigan Electric Cooperative Association,
Mid-American Energy,
Nevada Power Company,
New Hampshire Utilities,
Northwestern Energy,
New York State Energy Research and Development Authority (NYSERDA),
Oklahoma Corporation Commission,
Oklahoma Gas and Electric Company,
Pacific Power,
PacifiCorp,
Peco Energy Company,
Pennsylvania Electric Company,
Pepco,
PNM,
Potomac Edison,
PPL Electric Utilities,
Postal Regulatory Commission (PRC),
National Association of Regulatory Utility Commissioners (NARUC),
Progress Energy Carolinas,
Maryland Public Service Commission (PSC),
Pennsylvania Public Utility Commission,
Public Utilities Commission of Ohio (PUCO),
Puget Sound Energy,
Rhode Island Energy Efficiency and Resource Management,
RMP,
Rocky Mountain Power,
Salt River Project,
Sierra Pacific Power Company,
Southern Maryland Electric Cooperative (SMECO),
SourceGas Arkansas,
South Carolina Electric & Gas,
Southwestern Gas Corporation,
Southwestern Electric Power Company,
State Corporation Commission,
Tennessee Valley Authority (TVA),
Toledo Edison,
Ohio Edison,
United Illuminating,
West Pen Power Co,
Xcel Energy
For this inventory, EIA reviewed and catalogued 329 data sources containing state energy efficiency program evaluation results into an inventory. The focus of this inventory is to support the National Energy Modeling System (NEMS) and to research cost information in state-mandated energy efficiency program evaluations.
Author(s)
RePower Program
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton

RePower helped consumers access aggregated information about financing and rebates by compiling a customer-friendly guide to all utility and non-utility incentives in its service area.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
Atlanta SHINE,
Be SMART,
Beacon Communities Project,
BetterBuildings for Michigan,
BetterBuildings for Greensboro,
BetterBuildings Lowell Energy Upgrade,
Camden POWER - A Better Buildings Initiative,
CarrboroWISE,
City of Indianapolis Better Buildings Program,
Chapel Hill WISE,
CharlestonWISE,
Enhabit,
Community Alliance for Energy Efficiency (Cafe2),
Community Power Works,
Connecticut Neighbor to Neighbor Energy Challenge,
DecaturWISE,
Efficiency Maine,
emPowerSBC,
Energize Phoenix,
EnergyFit Nevada,
Energy Impact Illinois,
EnergySmart,
Energy Upgrade California,
EnergyWorks,
Fayette County Better Buildings Initiative,
Greater Cincinnati Energy Alliance (GCEA),
Huntsville WISE,
Local Energy Alliance Program (LEAP),
Michigan Saves,
Missouri Agricultural Energy Saving Team - A Revolutionary Opportunity (MAESTRO),
NeighborWorks H.E.A.T. Squad,
New York State Energy Research and Development Authority (NYSERDA),
reEnergize,
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton,
Richmond Regional Energy Alliance (RREA),
ShopSmart with JEA,
Solar and Energy Loan Fund (SELF),
Small Town Energy Program (STEP),
Wisconsin Energy Conservation Corporation (WECC),
Southeast Energy Efficiency Alliance (SEEA)

This publication summarizes some of the incentives offered by Better Buildings Neighborhood Program partners.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton

This video describes how RePower benefited from coordinating with contractors from the very beginning.

Author(s)
Green For All
Publication Date
Organizations or Programs
Enhabit,
Wisconsin Energy Conservation Corporation (WECC),
EnergyWorks KC,
Baltimore Neighborhood Energy Challenge,
BetterBuildings for Greensboro,
Green and Healthy Homes Initiative,
Working Partnerships USA,
NYC Apollo Alliance,
Community Power Works,
New York State Energy Research and Development Authority (NYSERDA),
RePower Bremerton,
Local Energy Alliance Program (LEAP),
RePower Bainbridge,
Better Buildings Near Eastside Neighborhood Sweeps Program,
RePower Kitsap,
Michigan Saves,
Keystone Home Energy Loan Program (HELP),
EnergySmart,
Efficiency Vermont,
Long Island Green Homes,
Energy Impact Illinois,
Energize Bedford,
reEnergize

This practitioner-focused Toolkit for Residential Energy Efficiency Upgrade Programs was created by Green For All to assist new, established, and future energy efficiency programs launch and scale initiatives that can deliver the full promise of the green economy. It is intended as a practical resource that offers examples, tools, and templates that a program manager can deploy to implement a variety of aspects of their program including best practice briefs and summary documents, RFPs, contracts, and other program design and implementation templates that communities nationwide have used to create their own efficiency programs.

Author(s)
Kira Ashby and Hilary Forster, Consortium for Energy Efficiency,
Bruce Ceniceros, Sacramento Municipal Utility District,
Bobbi Wilhelm, Puget Sound Energy,
Kim Friebel, Commonwealth Edison,
Rachel Henschel, National Grid,
Shahana Samiullah, Southern California Edison
Publication Date
Organizations or Programs
National Grid,
Southern California Edison,
Puget Sound Energy,
Sacramento Municipal Utility District (SMUD),
Commonwealth Edison Company (ComED)

This paper explores ways in which program administrators are using social norms to spur behavior change and, as a result, curb energy use. In recent years, home energy reports (HER) programs have applied the concept of social norms to the energy efficiency context. These feedback programs inform customers of how their energy consumption compares to their neighbors' and provide other information about their usage, with the goal of enticing customers to change their energy use behavior to improve their relative neighborhood ranking.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton
In this video interview segment, Yvonne Kraus of Conservation Services Group in Bainbridge Island, Washington, discusses why the RePower program created multiple branding and messaging themes.
Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton

In this video interview segment, Yvonne Kraus of Conservation Services Group describes how program and utility partnerships can co-benefit each other.

Author(s)
Climate Solutions
Publication Date
Organizations or Programs
Hailey's Community Climate Challenge,
EnergySmart,
Eugene Water and Electric Board,
Community Energy Challenge,
Hailey's Community Climate Challenge,
Jackson Hole Energy Sustainability Project,
Knoxville,
TN,
Oberlin Project,
Energize New York,
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton,
Burlington Sustainability Action Team,
Gainesville Regional Utilities,
Hillsboro Solar Advantage,
Issaquah,
WA,
MPower Madison Program,
Solarize Pendleton,
Clear the Air Challenge,
Santa Fe,
NM,
West Union,
IA,
Sustainable Williamson,
CharlestonWISE,
City of Aiken,
SC,
City Green Initiative,
Kilowatt Cruncher Challenge,
Smarter Sustainable Dubuque,
Small Cities Climate Action Partnership,
City of Grand Rapids,
MI,
Town of GreenÞeld,
MA,
City of Keene,
NH,
Home Energy Affordability Loan (HEAL),
Clean Local Energy Accessible Now,
RichmondBuild Pre-apprenticeship Construction Skills and Green Jobs Training Academy

This report from Climate Solutions analyzes small- to medium-sized American cities that are using successful methods to further clean energy economic development. Better Buildings Neighborhood Program partners that are featured in the report include Bainbridge Island and Bremerton, Washington; Boulder, Colorado; Bedford, New York; Madison, Wisconsin; and Grand Rapids, Michigan. The report includes details on the how the featured cities funded their projects, found successful models to reach their goals, and to see which new projects are off to a promising start.

Author(s)
RePower Bainbridge
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton
The RePower programs in Washington State convened local community leaders, organizations, contractors, and program partners for a planning summit to consider the benefits and challenges of different business models for the post-grant period. Participants considered four models: non-profit organization, utility, county or city government, and private sector.
Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton

In this video interview segment, Will Ranes of RePower Kitsap discusses the importance of understanding your market, including being able to speak the language of utilities and other key players.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
BetterBuildings for Michigan,
CharlestonWISE,
Enhabit,
Community Power Works,
Connecticut Neighbor to Neighbor Energy Challenge,
Efficiency Maine,
emPowerSBC,
Energize Bedford,
Energize Phoenix,
EnergySmart Colorado,
Energy Upgrade California,
EnergyWorks,
Greater Cincinnati Energy Alliance (GCEA),
Green Madison,
BetterBuildings Lowell Energy Upgrade,
Milwaukee Energy Efficiency (Me2),
Missouri Agricultural Energy Saving Team - A Revolutionary Opportunity (MAESTRO),
NeighborWorks H.E.A.T. Squad,
New Hampshire BetterBuildings,
New York State Energy Research and Development Authority (NYSERDA),
reEnergize,
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton

This presentation includes the brands, website addresses, and images for most of the Better Buildings Neighborhood Program partners.

Financing Programs: RFP & Contract Terms and Conditions

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
SustainableWorks,
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton,
Milwaukee Energy Efficiency (Me2),
City of San Diego Residential Energy Efficiency Loan Program

This webcast discusses financing program RFPs and contract terms and conditions.

Author(s)
RePower Program
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bremerton,
RePower Bainbridge

This document details the procedures for identifying, documenting, and responding to performance problems associated with contractors in the RePower Program in Washington. It includes example forms and a draft letter to contractors.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
Indianapolis Better Buildings Program,
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton

This peer exchange call summary focused on what energy efficiency programs are doing to target low- and moderate-income households.

Author(s)
RePower Bainbridge
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton
This presentation explores the community-based social marketing aspects of RePower Bainbridge and includes insights on knowing your audience, market barriers, and leverage opportunities.
Author(s)
Kira Ashby, Consortium for Energy Efficiency,
Monica Nevius, New York State Energy Research and Development Authority,
Bruce Ceniceros, Sacramento Municipal Utility District
Publication Date
Organizations or Programs
Pepco Holdings' Home Performance with Energy Audits Program,
Energy Trust of Oregon,
Public Service of New Hampshire,
PSE&G Whole House Energy Efficiency Program,
FortisBC’s 20/20 Challenge Program,
Focus on Energy

This paper describes a wide variety of behavior change insights potentially applicable to the energy efficiency program context, provides examples of efficiency programs that have applied these insights, and explores some untapped opportunities to achieve energy savings through behavior change.

Author(s)
Consortium for Energy Efficiency
Publication Date
Organizations or Programs
Ameren Illinois Utilities,
Avista Utilities,
BC Hydro,
Cape Light Compact,
All-Electric Home Performance Tune-Up,
Efficiency Vermont,
New Jersey Natural Gas,
Northeast Utilities Home Energy Solutions,
New York State Energy Research and Development Authority (NYSERDA),
PSE&G Whole House Energy Efficiency Program,
Vectren Energy Delivery's Home Energy Savings Program,
Focus on Energy

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.

Author(s)
State of Washington Department of Commerce
Publication Date
Organizations or Programs
RePower Kitsap,
RePower Bainbridge,
RePower Bremerton
A sample request for proposals from Washington state to develop an energy efficiency credit enhancement grant program.
Author(s)
U.S. Department of Energy,
U.S. Environmental Protection Agency
Publication Date
Organizations or Programs
National Grid,
New York Energy $mart Program,
Focus on Energy

This guide describes a structure and several model approaches for calculating energy, demand, and emissions savings resulting from energy efficiency programs that are implemented by cities, states, utilities, companies, and similar entities.

Author(s)
U.S. Department of Energy
Publication Date
Organizations or Programs
New York State Energy Research and Development Authority (NYSERDA),
Flex Your Power Program,
Sacramento Municipal Utility District (SMUD),
Focus on Energy,
Austin Energy
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.