Green Mountain Power’s
Bring-Your-Own-Device (BYOD) Battery Program

Homeowners and small business owners in Vermont who are electricity customers of Green Mountain Power can earn valuable incentives for helping reduce peak demand to benefit everyone.

Get paid to help the grid and reduce carbon emissions

Green Mountain Power (GMP) customers in Vermont with at least 6 kWh of Enphase IQ Batteries have a unique opportunity to get paid to support the electric grid. When electricity demands peak, you can share your stored, clean energy with the grid. This crucial contribution helps reduce energy costs and carbon emissions for all GMP customers.

Financial incentives

Enroll in the program and receive substantial upfront incentives toward your IQ Battery purchase.

  • Standard Upfront Incentive: Earn $850 per kilowatt (kW) of enrolled capacity for participating in three-hour discharge events.

  • Additional Incentive: In areas needing extra storage, receive an additional $100 per kW enrolled.

  • Example Incentive: For an Enphase® IQ Battery with 10 kWh usable capacity, homeowners are eligible for:1

    • $2,550 upfront incentive in most areas of the state

    • $2,850 upfront incentive in areas requiring extra storage capacity

Program commitment

  • Peak-demand events: Anticipate five to eight events per month, each lasting about three hours

  • Program duration: Once enrolled, your IQ Battery is automatically set for a ten-year participation in all peak events

Start now to earn your upfront battery incentive

To purchase an Enphase IQ Battery, contact your local Enphase installer or email us.

Find an Enphase installer Learn about Enphase IQ Batteries GMP BYOD Program

Frequently asked questions

All residential or small commercial (SC Rate 6) electricity customers of GMP with an installed and interconnected2 Enphase IQ Battery system of at least 6 kWh of useable energy can apply for the Program. Participants must also maintain an internet connection for the battery storage system at all times.

Devices in the Program have to maintain an internet connection. In the event GMP loses internet connectivity with the battery system, GMP will notify you and you will have 30 days to restore the connection. If you do not resolve the issue in this time frame, GMP will remove your battery system from the Program and you will be subject to the termination clause found in the program Terms and Conditions. 

After your Enphase IQ Battery is commissioned, you apply to enroll in the Program through the Enphase App on your smart phone. The Enphase App is available for download on the App Store and Google Play. First, you must navigate to the “Grid Services” section of the “Services” page in the Enphase App “Menu”. Then, you must select your utility provider and click on the program page to view program details. Click on “Sign Up for Free” and follow a few short prompts that walk you through the in-App application steps, including: 

  1. Complete the application form (only key details are required, Enphase will auto-fill known fields)
  2. Accept the legal terms and conditions via digital signature
  3. Submit the application

Key application steps via the Enphase App are summarized in the screenshots below.

Applications are typically accepted or rejected by GMP within 4-5 business days. If you are accepted by GMP, Enphase will automatically activate your battery to participate in the program. Note that activations can take 5-7 business days or longer to process.

How to apply

The Program offers an upfront incentive of $850 per kW enrolled for three-hour discharge events. Batteries in areas of the state where extra storage is needed most can get an extra payment of $100 per kW enrolled. For example, each Enphase® IQ Battery with useable battery capacity of 10 kWh would be eligible for an upfront incentive of $2,550 in most of the state or $2,850 in an areas of the state that need extra storage capacity3. Areas of the state that need extra storage are represented by red, orange, or yellow sections of GMP's Solar Map at the time of enrollment. Participants who receive the added incentive agree to ensure that their IQ Battery is charging via solar between the hours of 10 a.m. and 2 p.m. daily. The maximum upfront incentive available per customer is $10,050 (approximately 8 IQ Battery 5Ps).

Enphase and other program sponsors have no liability to any participant for any loss, damage, cost or expense incurred as a result of or in connection with participation in the program. All incentive payments are the responsibility of GMP. Additional details are provided in the Terms and Conditions.

Yes. Enrolled and activated batteries will participate in every peak demand event regardless of which battery operating mode you have selected. Your battery system will deliver up to 90% of its energy capacity during every peak demand event. In addition, if you have enabled your battery’s StormGuard feature, StormGuard will be automatically overridden during peak demand events. Note that GMP will make adjustments when possible to avoid completely discharging a battery prior to a pending weather event that could create outages. Finally, you may not use the enrolled battery system for any controls other than providing backup power for your premises. Therefore, your battery will be set to Full Backup mode during your 10-year commitment period.

Electric utility companies or other program sponsors typically implement demand response programs to reduce peak demand, which lowers electricity costs for all customers. A “Peak Demand Event” occurs when the program sponsor requests Program participants with flexible load devices, like Enphase IQ Batteries, to reduce electricity demand or directly supply energy to the electric utility grid during peak demand periods. Participants of demand response programs are eligible to receive incentives in exchange for helping to reduce peak demand.

In this case, GMP will make adjustments to your IQ Battery, such as discharging your battery at a specific rate, during peak demand events. Participants will be able to see when peak demand events have been scheduled via the Enphase App at least four hours in advance of the event.

Customers with Enphase IQ Batteries participating in the GMP BYOD program can expect peak demand events to occur an average of five to eight times per month for about three hours at a time. Once you are activated to participate in the program, your IQ Battery will be automatically set to participate in all events for ten years. Note that you cannot “opt-out” of specific events.

Participants enrolled in the program cannot “opt-out” of specific events.

Enrollment is a ten-year commitment, beginning on the date of acceptance.

Storage-only systems or storage systems which are not charged by a renewable energy system are eligible to participate.

Program participants keep the functionality of their Enphase IQ Battery, including backup power, in several ways. First, the three-hour peak demand events are expected to occur only about five to eight times per month. Second, although StormGuard will be overridden during peak demand events, if a weather event is expected to bring outages to your area, GMP will take steps to minimize the peak demand event impacts to make sure you have backup power when you are likely to need it the most. Specifically, GMP will make adjustments when possible to avoid completely discharging your battery prior to a pending weather event that could create outages. Finally, the program will maintain a Battery Discharge Limit of 10%, which will enable you to have a reserve of backup energy in case of a grid outage during or immediately after a demand response event.

Once you are activated to participate in the program, your IQ Battery will be automatically set to participate in all events for ten years. You may unenroll and terminate your GMP BYOD Battery Program Agreement by providing 30 days written notice of termination to GMP. Upon early termination, the customer will owe GMP a pro-rated repayment of the upfront incentive. Additional details are provided in the Program Terms and Conditions.

Upfront incentives will be mailed to Program participants in the form of a check within approximately two weeks of GMP confirming the functionality of the installed system. All incentive payments are the responsibility of GMP.

If you do not have an Enphase IQ Battery installed, the first step is to find an Enphase installer to get an accurate quote for your home energy system. Find an installer in your area here.

You are encouraged to talk with their Enphase installer about additional state and federal battery incentives that may be available. For example, Enphase battery systems qualify for the 30% Residential Clean Energy Credit – so the purchase and installation of your IQ Battery may qualify for a 30% credit on your federal taxes.

Enphase is committed to the customer experience. Participating customers can email gridservices@enphase.com for dedicated customer service related to the program or any customer service needs.

We encourage you to visit GMP’s BYOD Battery Program website to learn more about specific program requirements: https://greenmountainpower.com/rebates-programs/home-energy-storage/bring-your-own-device/ 

1 Requires the customer’s battery to deliver up to 90% of its energy capacity during every peak demand event. The maximum upfront incentive available per customer is $10,050 (approximately 8 IQ Battery 5Ps).

2 Interconnected batteries are connected to the internet and the electric grid. Note that Enphase does not support permanently off-grid battery systems and those systems would not be able to participate in this program.

3 Requires the participant’s battery to deliver up to 90% of its energy capacity during every peak demand event.