Energy Efficiency Programs

“Energy efficiency programs produce 'negawatts' - power that is never used.” 

Eversource is a Nationally Recognized Leader in Energy Efficiency

Eversource is consistently recognized as a leader in energy efficiency by national industry organizations. Two states within which Eversource operates have ranked in the top 10 of the American Council for an Energy-Efficient Economy (ACEEE) State Energy Efficiency Scorecard for the past eight years. In its 2014 State Scorecard, the ACEEE ranked Massachusetts as the number one state in energy efficiency for the fourth year in a row and Connecticut ranked sixth in the nation. ACEEE also ranked Boston the number one city in the nation. Eversource takes great pride in helping our states and communities remain vibrant and successful by administering programs that are emulated by others across the country.     

Energy Efficiency Benefits Every Customer

Energy efficiency is an inherent part of our region's energy source mix and a critical component of our overall strategy for meeting the needs of our customers. The Eversource energy efficiency portfolio is designed to reflect and respond to the way our customers use energy today and takes a multi-year approach that enables us to plan for the future.

Energy efficiency is one of the most cost-effective ways to collectively save money, create jobs, reduce greenhouse gas emissions, enhance energy security, and reduce the need for additional generation plant construction. Through energy efficiency programs, energy is saved in thousands of homes and businesses and in effect produces “negawatts” - power that is never used. This energy savings is the equivalent of building a virtual power plant. In total, over the 2012-2014 period, energy efficiency peak demand savings by Eversource customers was approximately 350 megawatts (MW).

In addition, in 2014 the energy efficiency programs administered by Eversource resulted in an estimated $180.7 million savings for our customers. Last year alone:

  • Eversource electric customers saved over one billion kilowatt hours (kWhs) of electricity and will save more than 11 billion kWhs over the lifetime of the installed measures. To put those two numbers into perspective, the electricity saved in 2014 through energy efficiency measures could provide power for all 3.1 million Eversource electric customers for seven days and the lifetime savings could power the same number of customers for 74 days.
  • Eversource gas customers saved over 9.2 million therms (1 therm equals 100,000 British Thermal Units) and more than 131.7 million lifetime therms. The natural gas saved in 2014 through energy efficiency measures could provide energy for 500,000 Eversource natural gas customers for three days and the lifetime savings could provide energy to the same number of customers for 45 days.
  • “Fuel neutral” initiatives administered by Eversource, such as programs which install weatherization and insulation measures, also saved customers an estimated 521,388 MMBTU (MMBTU is defined as 1 million British Thermal Units) from reductions in home heating fuel usage such as oil, liquid propane, kerosene and wood. The emissions reduced by not using these fuels equates to taking 5,820 passenger vehicles off the road.

Environmental benefits from the successful implementation of Eversource’s energy efficiency offerings from 2012 through 2014 resulted in cumulative peak demand MW reductions, generation equivalents and annual MWh savings as shown in the graphs below:





The following tables show preliminary results for Eversource’s 2014 energy efficiency programs by Eversource territory:


2014 Preliminary Results - Electric Energy Efficiency Programs


  CT Electric  

 Eastern MA Electric  

 NH  Electric

Western MA Electric  

Electric Total 

Eversource Energy Efficiency Electric Data  

2014 Actual 


2014 Preliminary 

2014 Actual 


Customers Participated






Spend (US$)






Annual kWh Saved






Lifetime kWh Saved






Summer Peak Annual kW Saved






Winter Peak Annual kW Saved






Annual CO2 reduced in Ton






Lifetime CO2 reduced in Ton






Customer $$ Saved Annually






Customer $$ Saved Lifetime






Fuel Neutral MMBTU Savings Annual






Fuel Neutral MMBTU Savings Lifetime












2014 Actual Results - Natural Gas Energy Efficiency Programs


 MA Gas  

CT Gas  

Gas Total 

Eversource Energy Efficiency Gas Data  

2014 Actual 


2014 Actual 

Customers Participated




Spend (US$)




Annual Therm Saved




Lifetime Therm Saved




Winter Therm Peak




Annual CO2 reduced in Ton




Lifetime CO2 reduced in Ton




Customer $$ Saved Annually




Customer $$ Saved Lifetime








DISCLAIMER: Please note that the above tables are for informational purposes only and include both planned results and preliminary actual data subject to revision, reconciliation, and approval by regulatory bodies in the state in which each company operates.  

2014 Solution Highlights

Eversource helps to shape new, forward looking energy efficiency policies, legislation and regulations in each of the states in which we operate. Because programs vary by state, we invite you to visit our Save Money and Energy pages at for CT, eastern MA, western MA, and NH program details. We are proud to partner with our regulators and stakeholders to offer statewide energy efficiency initiatives which are marketed under the brands Energize Connecticut, Mass Save and NH Saves.

Empowering Customers with Energy Savings Plan

In 2014 Eversource empowered its customers to make smart energy decisions and improvements with the launch of the online tool, Energy Savings Plan. Energy Savings Plan is an interactive tool within that enables residential and business customers to examine how they are currently using energy, how they compare to other customers, and, most importantly, how they can reduce their energy consumption costs. Energy Savings Plan utilizes our customer’s existing usage data, collects additional information through a series of easy-to-answer profile questions, and then makes customized, actionable energy efficiency recommendations. Features of the online tool include potential savings estimates, “learn more” case studies and links to solution resources.

Energy Efficiency at Home

A 1963 suburban home was cold in the winter and hot in the summer. Eversource connected the homeowner to an authorized contractor for an in-home assessment, identifying energy-saving opportunities resulting in annual savings of more than $1,000.  

“After completing the basic assessment, the technician explained that insufficient insulation in my attic was the main source of my heating and cooling inconsistencies. After explaining the benefits and cost savings of the upgrades, it became clear that the addition of insulation was a worthwhile investment for my family and my wallet.”    

In 2014, residential customers took advantage of rebates and incentives that encourage the purchase of energy-efficient products such as lighting, insulation, heating, cooling, windows, and water heating equipment. 

  • Comprehensive Home Improvements: Eversource offers customers a wide array of services, incentives, and financing to enable energy savings in customer homes. In 2014,77,660 Eversource customers in all three states participated in our industry-leading home energy assessment and service programs that provide turnkey energy improvements and rebates.
  • Customer Experience Enhancements: The Massachusetts Home Energy Services Program introduced an Energy Concierge pilot with the goal of increasing customer satisfaction and encouraging more customers to install energy-efficient products.  Results of 1,000 served customers will be evaluated and key learnings will be applied to the broader program.
  • High Efficiency Lighting: In 2014, retail lighting programs administered by Eversource increased the sale of light emitting diode (LED) bulbs in Connecticut by 175 percent, representing 38 percent of total residential lighting sales, compared to just 13.8 percent in 2013. Similarly, New Hampshire saw an increase in LED bulbs purchased, from just over 10 percent in 2013 to nearly 44 percent in 2014.

Energy Efficiency at Work

For two years, a steel manufacturer worked with Eversource on a series of projects to improve the factory’s energy efficiency. LED lighting, refrigeration controls, programmable thermostats, and more resulted in an annual savings of about $19,000.   

“Improving our energy efficiency was a fairly large undertaking. Luckily, Eversource helped us identify ways we could simultaneously modernize and save on our energy costs. They made the overall process a smooth and timely one with no disruption to our employees or customer service.” 

Eversource supports commercial and industrial customers by helping to identify smart energy improvements, lowering operational costs, and enabling greater business competitiveness. Eversource retains teams of highly skilled technical staff to help customers identify energy saving opportunities, and offers attractive financial incentives to help facilitate implementation.

  • Dedicated energy efficiency account executives and consultants are available to business customers to advise and assist with efficiency opportunities. Customers benefit not only from cost reductions; these efforts also often result in enhancements to their business environment and/or productivity.
  • In 2014, a new initiative for tenant fit-out spaces in Massachusetts encouraged customers to utilize comprehensive lighting solutions through attractive incentives for eligible projects. This simplified, flexible approach is critical in the fast-paced fit-out market and has been well received by large property management firms in our Eversource territory.
  • The PRIME program provides manufacturers with a systematic approach to evaluating and identifying inefficiencies and waste in operations to streamline production and reduce electrical energy consumption and environmental impact. By utilizing LEAN manufacturing techniques manufacturers can reduce costs and remain competitive.
  • Eversource remains focused on incentivizing LEDs to replace metal halide or high pressure sodium exterior lighting in parking lots and fluorescent lighting in buildings.  Through the upstream lighting program, large commercial and industrial customers can purchase energy–saving compact fluorescent lights (CFLs) and LEDs at a discounted rate from participating distributors, eliminating the need for a paper rebate form.

Examples of Creative Leadership

Energy consumption is highly concentrated with our largest customers, with under four percent of our customers using over 75 percent of the energy we deliver. This provides Eversource the opportunity to engage these customers in a partnership (MOU Partnership Agreement) to significantly support and expedite energy efficiency efforts to reduce energy usage, carbon impacts, and operating costs.  Eversource applies decades of experience driving energy efficiency results in all systems and technologies consuming electricity and natural gas.

  • In 2010, Eversource signed a ground breaking Memorandum of Understanding (MOU) with the Massachusetts Institute of Technology (MIT). As part of this partnership, MIT committed to a 15 percent reduction in energy use over a three-year period. At the end of the term, MIT not only achieved but exceeded its goal. What is truly remarkable is that this was done while MIT was still in a growth mode. The graphic below illustrates how growth and energy use were decoupled through the efforts of this partnership.


  • In 2014, Eversource and the University of Massachusetts-Amherst began a three-year energy efficiency alliance with a goal of reducing energy consumption on campus by three million kWhs per year. Eversource will provide assistance with energy efficiency incentive funding, technical expertise, outreach and educational programs on campus. In addition, we will be involved in the design of new construction, expansion and major renovations, with a target to be 25 percent more energy efficient than is state mandated.
  • The strategy supporting this success has been scaled and replicated at a number of our largest customers across the Eversource territory in 2014. The value of the relationships is not only experienced in financial results, but also in the response from these customers in recognition and MOU Partnership Agreement extensions.

Energy Efficiency in Our Communities

Through key partnerships and our memberships in the New England Clean Energy Council, Massachusetts Energy Efficiency Advisory Council, Connecticut Energy Efficiency Board and the New Hampshire Energy Efficiency and Sustainable Energy Board, Eversource works closely with community leaders, residents, schools and businesses to reduce energy consumption, increase the use of renewable resources, and encourage participation in smart energy programs. We engage with the communities we serve in numerous ways, including educational materials available at, training workshops held throughout the region, and informational booths at large events, such as the Eversource Hartford Marathon.  

  • Eversource partners with the Connecticut Technical High School System in the E-House program, which provides high school students with hands-on training to prepare them to enter the green workforce.  On-site E-Houses serve as energy efficiency learning laboratories, enabling students to gain experience in plumbing, wiring and construction, and learning with examples of past and present construction practices. Eighteen E-Houses in Connecticut are expected to be completed by the end of the 2015 school year.
  • Through the Clean Energy Communities program, a total of 120 cities and towns in Connecticut have been empowered to take charge of their energy future by signing a pledge to reduce municipal energy consumption by 20 percent by 2020.
  • In partnership with the city of Boston, Eversource responded to the rising energy costs during the winter months through targeted outreach to residents.  The multi-channel strategy included educational energy efficiency workshops, a dedicated website for the purchase of discounted lighting and energy saving products, and point of purchase marketing materials reinforcing energy efficiency as a way to offset electric price increases in the region.

Kill A Watt™ Kits are available at local libraries throughout Massachusetts providing customers with a tool to assess their individual electric consumption, tips to save energy, and information on programs available through Mass Save.

Industry Engagement

Eversource leadership engages with many organizations focused on advancing energy efficiency policy, program development, research, and education opportunities. Our senior leadership holds Board positions on the American Council for an Energy Efficient Economy (ACEEE), Northeast Energy Efficiency Partnership (NEEP), and the Consortium of Energy Efficiency (CEE). 

In 2014, Eversource expanded its engagement with the research and development community by joining the Fraunhofer Center for Sustainable Energy Systems Advisory Board. Penni Conner, Eversource Senior Vice President and Chief Customer Officer, and Fraunhofer Center Board member is heading this effort to connect industry-leading research with the growing needs of our customers. This collaboration provides a new opportunity to link energy efficiency innovation with real world opportunities and is helping to build a vision for how to meet our efficiency goals in the future.

We are a member of the DesignLights Consortium (DLC) and served as co-chair as it evolved from a regional communication vehicle to a national clearinghouse for the blossoming LED industry. The DLC ensures consistency and quality into both the marketplace and through the many EE programs across the country.

Additionally, Eversource has an active presence and peer-to-peer relationships with program administrators and leading forums throughout the industry.  Examples include ESource, Department of Energy (DOE), American Society of Mechanical Engineers (ASME), American Society of Heating, Refrigeration and Conditioning Engineers (ASHRAE) and Lighting Research Center (LRC). To learn more about our research and development efforts in energy efficiency, please visit the Research and Development section of this report.

Awards and Recognition

In 2014, ENERGY STAR® recognized New England’s ENERGY STAR Products Program with its Sustained Excellence Award.  This award was given to all the New England electric utilities working with NEEP, including Eversource in CT, MA, and NH.

In 2014, ENERGY STAR recognized New Hampshire’s ENERGY STAR Homes Program with its Partner of the Year Award. In 2015, EPA recognized this same program with its Energy Star Sustained Excellence Award

In 2015, the EPA recognized the CT Home Energy Solutions weatherization program with its Partner of the Year Award

Eversource, along with other regional program administrators, received the following industry awards in recognition of innovative work: 

  • ENERGY STAR® Partner of the Year  This sustained Excellence Award was presented to the sponsors of NEEP for the program administrators’ longstanding dedication to regionally coordinated energy efficiency programming designed to drive market transformation for ENERGY STAR certified lighting and products.
  • Greenlite “2014 President Award.” - The President Award is given a by leading energy efficiency lighting manufacturer, Greenlite, once per year to either utilities or retailers which set themselves apart from the group. For 2014, the President Award was given to the MA/RI program administrators for their innovative vision and program design.

2015 Energy Efficiency Plans

Eversource has set aggressive goals for 2015 that support our customers’ current and longer-term needs and reflect energy efficiency and environmental regulations and goals of the states in which Eversource operates. 

2015 Goals - Electric and Natural Gas Energy Efficiency Programs

Energy Efficiency Data   

CT Electric 

 Eastern MA Electric 


Western MA 

 Eastern MA Gas 

 CT Gas 

Spend (US$)







Annual kWh Savings







Summer Peak KW Savings







Winter Peak KW Savings







Annual ccf/therm Savings(1) 














(1) Massachusetts Annual Savings are reported in therms and Connecticut Annual Savings are reported in ccf consistent with each states' regulatory reporting requirements. 
DISCLAIMER:  Please note that the above table is for planning purposes only.

To view the energy efficiency plans filed with the regulatory bodies in the Eversource service territory, please use the following links.

Connecticut 2013-2015 Plan 

Connecticut 2015 Plan update  

Massachusetts 2013-2015 Plan 

Additionally, an update to the 2013-2015 Electric and Gas Energy Efficiency Plan was submitted to the Massachusetts Department of Public Utilities by all Program Administrators on February 28, 2014 indocket D.P.U. 14-05. 

New Hampshire 2014 

New Hampshire 2015-2016 Plan 

View previous year’s energy efficiency information