Flex Batteries is a residential battery demand response program that allows PSE and Uplight to remotely call on your home battery system to discharge energy to your home during Flex events. There is nothing you need to do during these events. You will receive incentives for the energy, in kWh, your home battery discharges during these events. By enrolling in Flex Batteries with an eligible battery system, you help reduce reliance on electricity from the grid during Flex events and help support the grid.

Your battery level participation used to calculate performance incentives is hosted in your FlexSaver account (Planned Fall 2026) or can be requested from the Program directly by contacting support@pseflex.com. While we make reasonable efforts to ensure the accuracy and completeness of device level measurements, data may be delayed, incomplete, or subject to change. Your energy data, including energy discharged during Flex events, is available in your device-specific app.

All enrollees in Flex Batteries will receive incentives in the form of checks:

• A one-time enrollment incentive equal to $75 per kWh of enrolled battery storage, up to $1,000 maximum per battery.
• $.50 per kWh, up to $500 per battery per year for your participation during Flex events.

You will receive your enrollment reward in the form of a check within 4-6 weeks after enrollment and completion of a W-9, sent by Uplight. You will need to complete the W9 form from Uplight on behalf of PSE in order to receive your incentive. Your system may begin participating in events prior to completing the W-9. Then, 4-6 weeks after the close of the summer season (September 30th), you will also receive payment by check for your participation incentives.

Flex Batteries is administered on behalf of PSE by Uplight, overseeing program implementation, payment processing, and customer support. For the fastest assistance, you can contact Uplight's customer support directly at support@pseflex.com or by calling 1-888-793-9347.

Enrollment in Flex Batteries is currently accepted from:

• Enphase
• Franklin WH
• SolarEdge (including qualified LG batteries paired with SolarEdge inverters)
• Tesla

You can download a detailed list of the current eligible systems here. If you have a question about your battery equipment eligibility, please contact the Flex Batteries team at support@pseflex.com.

PSE and Uplight are working with battery manufacturer partners and hope to make more options available in the future. PSE will update this webpage as more eligible battery manufacturers become available.

Once enrolled, you don’t have to do anything. Flex events will happen automatically.

Try to avoid opting out of events to maximize PSE’s demand response, and your participation and incentives.

The standard enrollment timeline takes up to one week. If you enroll your battery system prior to receiving permission to operate (See Interconnection and Billing FAQ below), your enrollment will be rejected, and you will need to re-enroll. Please reach out to support@pseflex.com if your enrollment is not approved or rejected within the following week.

Your enrollment request might be denied for a few reasons, including:

• Your battery system is not interconnected yet. We’ve noticed a number of customers try to enroll their battery system without a complete interconnection application. If you enroll your home battery system in Flex Batteries prior to receiving Approval to Energize, your enrollment will be rejected. You will need to re-enroll and your enrollment may need to be manually reprocessed. If your battery system is not interconnected or does not have permission to operate, please review Interconnection and Billing FAQ ; below
• You don’t have an electric account with PSE.
• You don’t have an AMI meter at your home.
• Inaccurate customer or account information was provided during the sign-up process.
• Your equipment is not eligible. If you have a question about your battery equipment, please contact the Flex Batteries team at support@pseflex.com.

If you need additional assistance signing up, Uplight’s customer support directly at support@pseflex.com or by calling 1-888-793-9347.

Enrollments for Flex Batteries are processed weekly, but the occasional enrollment can slip through the cracks. If your enrollment has been pending for longer than a week, please contact us at support@pseflex.com.

Yes, if your household has multiple eligible batteries, you can receive an enrollment reward for each of them.

Are your new batteries interconnected with PSE? If so, please contact the Flex Batteries team at support@pseflex.com to enroll your additional batteries. If not, please contact your installer to submit a modification to your existing solar or battery interconnection application. Once you’ve received Permission to Operate with the modified system, please contact support@pseflex.com.

A battery customer may not participate in Time-of-Use at this time due to billing complexities. We are working to change this in the future. Learn more.

Yes. For information and resources to learn more about installing solar at your home, please visit Customer Connected Solar.

Yes. You can enroll other qualified smart devices in PSE Flex Smart and Flex EV.

However, if you are signed up for Flex Rewards already, you will need to unenroll to participate in Flex Batteries.

If you would like to remove your battery from Flex Batteries and no longer participate in events, please contact support@pseflex.com.

A Flex event is a period when PSE identifies an opportunity for customers to help support the electric grid by temporarily reducing electricity use.

There is no single condition that triggers a Flex event. PSE evaluates a variety of factors across the electric system, including: electricity demand, resource availability, energy market conditions and weather. When these conditions indicate that reducing demand would benefit our electric grid, a Flex event may be called.

By participating in Flex programs, you help support a reliable grid while earning rewards.

When PSE schedules an event, your device might receive an automatic command to charge from your solar or from the grid ahead of the event. When the Flex event starts, your battery system will automatically start to discharge over the duration of the event. You do not need to do or change anything to participate in the event.

If your home or neighborhood is currently experiencing an outage such that your battery is already discharging to back up your home, your battery will automatically be excluded from the scheduled Flex event.

Through Uplight’s integrations with the participating manufacturers, PSE can schedule events that send automatic commands to the participating devices. These commands take into account the current status of the device, including state of charge, and the planned duration of the Flex event. Typically, your battery will discharge at a constant power output during the event.

Note: Devices will never be discharged less than 20% of the battery capacity, meaning 80% of the energy will be discharged. Your battery will return to normal operation following the event.

Flex events will only occur during the hours of 6 a.m. to 10 p.m. and will never take place on holidays (see list below).

• Winter events can occur from November 1 to March 31
• Summer events can occur from May 1 to September 30.
• PSE may call upon your battery up to 50 times per season, or 100 per year.
• PSE may call upon your battery 7 days a week.

Holidays:

• New Years
• Memorial Day
• Independence Day
• Labor Day
• Thanksgiving
• Christmas

No, events are structured such that the battery response is automatic and you do not need to do anything.

By default, you will not receive a notification of your battery participation during a Flex event from Uplight or PSE. However, you may receive a notification from your battery manufacturer, depending on your app settings.

If you would like to receive a notification from PSE, please contact Uplight’s customer support directly at support@pseflex.com or by calling 1-888-793-9347.

You may opt out of events in your app as supported by the device manufacturer.

Note: Your system may automatically opt out of Flex events if a storm mode is enabled within your manufacturer’s app. We recommend disabling these features to ensure maximum participation and participation incentives, but this is your choice. 

Your ability to withstand an outage is important to us, so there are a few protections in place:

• Flex events are human controlled. At PSE our meteorologists and system operators are constantly vigilant about outage risk. If we feel the risk of an outage is high, we will likely defer calling a Flex Batteries event.
• The number of Flex Batteries events is limited. This reduces the probability that a Flex event coincides with an outage.
• If your home is currently experiencing an outage such that your battery is already discharging to back up your home, your battery will automatically be excluded from the scheduled Flex event.
• Weather matters. Outages often occur during blustery weather conditions, while Flex events are typically called with conditions on the electric system indicate that reducing demand would help support grid operations. Because these situations do not always occur at the same time, the likelihood of a Flex event coinciding with an outage is low.

To participate in Flex Batteries, your battery much be connected to PSE’s grid. If you battery is paired with solar, learn more about creating a new interconnection or modifying an existing one here. If you only have a battery, create a new or modify an existing interconnection through PSE’s Distributed Renewables interconnection portal.

In all cases, PSE recommends you work with your Recommended Energy Professional (REP) to get interconnected safely.

Enrolling your battery requires that your home be equipped with AMI (Advanced Metering Infrastructure), the current standard for metering technology that facilitates two-way communication between meters and PSE. As part of PSE’s Meter Upgrade Project, nearly 2 million meters in our service area were upgraded to AMI between 2018 and 2023. For more information, please visit the Meter Upgrade Project.

Yes. If you have solar panels and a qualifying battery, you can participate in both Flex Batteries and PSE Net Metering. The combined solar and battery system will need to be approved through our interconnection process. Then, through net metering, you can use or store the solar power you generate. At times when your solar panels generate more power than you can use or store, the excess energy will be sent to PSE's grid and you'll receive net metering credit. Learn more.

Participating in Flex Batteries should have a minimal impact on your Net Metering credits or energy costs. Here's why:

• Any energy your battery system exports to the grid during Flex events is credited to your Net Metering bank, just like solar exports
• When your batteries recharge after an event, that energy is either drawn from your Solar, Net Metering bank, or purchased from PSE - the same way your regular Net Metered billing works
• Battery storage isn't perfectly efficient - most systems are 90% to 95% efficient - for every kilowatt-hour your battery discharges it needs about 1.1 kilowatt-hour to recharge.
• For the average customer, that extra 0.1 kilowatt-hour equates to roughly $0.14 per Flex Event, or $8.40 over the course of 60 Flex Events

Remember:

• During a Flex event, you use stored battery energy instead of grid power to power your home
• The purpose of Flex events is to shift when you use the energy, not to use more overall
• Shifting the energy use of Flex Batteries customers to different times helps relieve demand on the electrical grid.

In the winter:

• The same principles apply, but depending on your system settings, your battery may use PSE’s grid to recharge more frequently because solar isn’t as plentiful
• You may not accrue a Net Metering Bank and deplete it just as you would without participation in Flex Batteries

Think of it this way - whether you use energy directly from the grid or from your batteries during a Flex event and under ideal conditions, you'll use nearly the same total amount of energy. Flex Batteries simply helps PSE manage when that energy is used while providing you additional incentive payments for participating in Flex events.

Yes, you can still participate in Flex Batteries with a storage-only system if it is an eligible system and is interconnected to PSE’s grid. When your battery sends energy back to the grid during events, your meter tracks this contribution, and PSE credits it back to your monthly bill. This ensures that you are not billed twice for the same energy—once for using it and again for sending it back during events.

If you're installing a storage-only system and want to participate in the Flex Batteries program, the installation process is similar to Net Metering, and you'll still need to work with an installer and apply for interconnection. Visit PSE’s Distributed Renewables page to get started.

PSE recommends you work with a Recommended Energy Professional to install and interconnect the system safely.

Completing the interconnection process ensures your battery is safe to operate and keeps it eligible for PSE programs, if you decide to participate in the future.

Yes! Residential batteries are a vital part of PSE’s clean energy goals. In August of 2026, Flex Batteries had more than 14 megawatts and 40 megawatt-hours of residential customer batteries enrolled and that number is growing. This Flex Batteries capacity helps PSE support reliable grid operations, increase resiliency, and reduce the need for less-efficient, more costly sources of power.

Home battery systems can be a significant investment. A basic system can start at $15,000. Depending on your home energy needs, required electrical upgrades, permits, and installation costs, the final cost may be higher.

Incentives for enrolling and participating in the programs are considered taxable income. As such, Uplight will collect W9 forms from all participants before processing incentives so that Uplight has the necessary information to issue 1099 forms in January. The tax implications for each participant will depend on individual circumstances, and we recommend you discuss with your tax professional.

W9 forms will be stored securely with restricted access and used only for the purpose of issuing the 1099 forms.

Log into the Trade Ally portal to review more FAQs. You may also reach out to our Trade Ally team for assistance at tradeallysupport@pse.com.

PSE is working on battery storage in a variety of local scenarios to determine the best ways they can potentially enhance the grid and meet our customers’ unique energy needs. Learn more.

Batteries are clean, quiet sources of backup power that can provide added energy security for you and your community. Depending on your energy needs, a single battery may be able to power important devices in your home, such as a refrigerator, Wi-Fi, LED lights and a laptop, for days during an outage. A home battery can also recharge a cell phone thousands of times.

Today’s battery technology today is automatic. If the power goes out, the battery takes over immediately, without the need to cart out a generator in the dark.

If you still want or need a generator, some manufacturers now offer batteries with automatic generator control. When connected, the battery can help manage both systems.

You can find answers to additional frequently asked questions related to battery storage technologies on our Battery Storage FAQ page.

Still have questions? Please contact our Energy Advisors.