Rebate for Sonnen Batteries By Rocky Mountain Power in Ephraim

As of December 1, 2020, Rocky Mountain Power began implementing its Wattsmart Battery Program. When you opt to participate in this program, Rocky Mountain Power (RMP) will automatically manage your backup battery as part of their smart power grid.

Wattsmart is part of RMP’s ongoing efforts to find ways to use energy efficiently. The program comes with the following benefits:

Upfront incentive upon enrollment
Earn ongoing bill credits
Help create a healthier environment
Keep electric prices among the lowest in the nation
Use renewable energy efficiently

SunPower by Custom Energy is proud to be the best battery backup company near you in Ephraim.

Looking to Get Started with your Rebate? Take This First Step Today!

Submit your information below, and we will call to discuss battery options and schedule your free in-home estimate!

Signing Up

Signing up for the Wattsmart program does not have any negative side effects on your solar battery . It will still perform as normal, with the only major change being RMP now having the ability to turn your battery on and off.

With this program, Rocky Mountain Power means to connect participating solar batteries to create an energy resource pool large enough to provide energy when needed. Excess solar energy is stored during the bright, powerful daylight hours and stored for use in the evening or early morning hours.

Learn More

How to Enroll


Work with a qualified installer who can evaluate and determine your options.


Read the program requirements and rules to ensure participating is the right choice for you.


Have the solar system installed with an approved battery and interconnected with Rocky Mountain Power’s customer generation meter.


Submit application for participation and incentive.


RMP will verify the ability to communicate and dispatch the battery


Verification of Customer Generation application approval by RMP


Incentive check is issued!
Get Started!

Which Batteries Are Eligible?

This program and rebate is currently available to those with Sonnen Core, Sonnen Eco and Sonnen EcoLinx backup batteries. Learn more about the details of the incentive program on Rocky Mountain Power’s website.

Utah is a prime state for harnessing the advantages of solar power and backup batteries. With Sunpower by Custom Energy, you can boost your home’s value, use a renewable energy source to power your home and take advantage of rebates and incentives like those with Rocky Mountain Power. Call us today to get started with a free in-home estimate!

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Lighten Your Energy Bill

Through Rocky Mountain’s Wattsmart rebate program, Sonnen and select batteries are eligible for exclusive incentives, making it even more accessible to harness sustainable energy solutions for your home.

About the Wattsmart Battery Program

Wattsmart Battery Program

Discover Rocky Mountain Power's Wattsmart Battery program, a leader in energy efficiency. This innovative initiative seamlessly integrates energy storage into the smart power grid, providing participants with upfront incentives, ongoing bill credits, and an opportunity to contribute to a sustainable environment through the effective use of renewable energy.


No. For Rocky Mountain Power to justify paying an incentive, the batteries must be able to connect to their system. This will require battery manufacturers to work with us to create a working connection to our system.

The best candidates are customers who are early adopters of technology, energy conscious and want to make a positive impact on the environment with renewable energy. This innovative program is in its infancy and will evolve over time. Customers who do not wish to be part of a continually evolving program should not participate.

At this time, the following batteries qualify for the program:

  • Sonnen Core
  • Sonnen Eco
  • Sonnen EcoLinx
  • SolarEdge Energy Bank
  • Fortress Power Envy True

Yes, if you are an existing solar customer and install an eligible battery you can receive an enrollment incentive and annual incentives. Your participation in the Wattsmart Battery program, will not impact your current net metering/customer generation rate.

As long as you participate through the commitment period of four years and maintain your battery with our system, you will not have to pay back the incentive. You must also maintain your internet connection to the battery so we can communicate with it. If we are unable to communicate with the battery at any point during participation, we will notify you to fix it. If it is not fixed, you will be required to pay back a prorated portion of the incentive.

Yes, if your current battery is a Sonnen or SolarEdge battery you can enroll in the program, although you will not be able to receive the upfront enrollment incentive. You will be eligible to receive the annual participation bill credit. The enrollment incentive is available for batteries purchased and installed after the effective date of the program.

Choosing SunPower by Custom Energy Ephraim's Top Solar Company Choice

SunPower is the solar provider of choice for the world’s leading organizations and discerning homeowners. SunPower by Custom Energy is proud to bring this same solar provider of choice to the local residents of Ephraim as the top Master dealer of SunPower in Ephraim!

SunPower by Custom Energy is the most trusted solar provider near you in Ephraim.

SunPower by Custom Energy is one of the top solar providers near you in Ephraim with A+ ratings.
A+ Rating

Better Business Bureau*

SunPower by Custom Energy is the best solar company in Ephraim with over 500 five star reviews.

Five-star reviews on ConsumerAffairs*

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U.S. government installations

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With SunPower® solar on their homes

*As of November 2020.

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Recommended by Family & Friends Every Time

  • Custom Energy - 5 Star Review By MIchael a

    MIchael a


    Custom energy had repaired my solar panels, replacing all inverts and associated controls on Sun Power warranty. That is why I had Custom energy install my batteries for solar backup. They did a wonderful job, I trust them completely.

  • Custom Energy - 5 Star Review By brad burnham

    brad burnham


    They kept me informed through the whole process of installation. We had the roof replaced during the process, and the new roof looks amazing. The panels are working like they should so far(1 month), unless it snows then they work fine once the snow melts.

  • Custom Energy - 5 Star Review By Cheryl Cook

    Cheryl Cook


    We really liked the "all in one solar system" not components from different manufacturers. The system was expertly and timely installed. Both SunPower and Custom Electric meet all of our expectations.

  • Custom Energy - 5 Star Review By elizabeth Tubbs

    elizabeth Tubbs


    Custom Energy provided detailed, accurate and timely information. Our own research indicated that the manufacturer (SunPower) as well as Custom Energy provides quality products, good service and prompt response to any questions or issues. Our system was installed in a timely manner and is operating better than expected. I appreciate the all encompassing service approach - if I have a problem I call the same person regardless of the origin of the issue. I would not hesitate to recommend Custom Energy and SunPower to anyone looking for a quality system and install.

  • Custom Energy - 5 Star Review By N Brown

    N Brown


    Called for a bid and they were helpful and responsive. The layout appears to be able to satisfy our needs, but we were not able to move forward with the installation until later. Overall was good to get a bid and understanding of next steps.

  • Custom Energy - 5 Star Review By Bridget Strickland

    Bridget Strickland


    They replaced the microinverters on our solar panels in a timely manner. Made appointment, showed up on time and did a great job.

  • Custom Energy - 5 Star Review By Joel Cantor

    Joel Cantor


    I purchased a 20kw system for $64.2k in 2021. I wanted the best panels from a manufacturer with the best reputation. SunPower’s panels and equipment met these requirements. Their Utah affiliate, Custom Energy, visited my home within the week of my inquiry and provided me with a clearly illustrated proposal which said my electric bill would go down from over $400 per month to $30 per month. I was skeptical of course. The installation occurred three months thereafter with little hassle and done with precision in one day. Other electricians visiting my home said the install was the “cleanest” they’ve seen. One year in and my monthly power bill is just $16…yes…$16. It’s amazing and I am very excited to no longer have a huge bill to run our air conditioning which can run very high in Moab, Utah’s desert where 100 degrees is typical. Love solar and love Custom Electric.

  • Custom Energy - 5 Star Review By Lilburn Deskins

    Lilburn Deskins


    The company was professional from start to finish. They had the product on hand, told me when the installation would start and when it would be finished. They provided weekly feed back telling me where the approval process stood and what I needed to do. After installation, they were there to answer questions about the system. When friends ask about my panels, I highly recommend SunPower by Custom Energy to them.

  • Custom Energy - 5 Star Review By Robert Cook

    Robert Cook


    The sales process was professional, easy to understand, and answered all our questions. The salesman was helpful throughout the whole process from placing the order to follow up after start-up. The company was also responsive in getting us documents necessary for filing for our tax rebate. The installation crew was quick and professional and did an excellent job. We only received about 2 days notice before their arrival. A little more notice would have been helpful. The new meter from our power company was installed a few days after installation was complete. When that was done the system was turned on. However, no power was being generated because of a communication problem. After calling Custom Electric they sent someone to rectify the problem within a day. Since then, the system has been operating well without any issues. The system size seems to have been determined well since it is generating enough power for our home usage and provides some excess which goes back into the grid. The app that reports how much energy the system is producing and how much the house is using is confusing and just wrong. This could definitely be improved since it has a lot of potential to give customers insight into their energy usage and production. Overall, I would highly recommend SunPower Equipment and Custom Electric to anyone who intends to add solar power to their house. The experience was positive and the people were helpful and responsive.