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family with flex solar battery storage by sunrun

Sunrun Flex: A solar plan designed to grow with you

Don’t get stuck with a system you’ll outgrow
Solar and storage sized to meet your energy needs today and tomorrow
Get a larger system, but pay only for the energy you use*
Avoid expensive oversizing & costly second systems

*Subject to a monthly minimum bill

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illustration of a home indicating why homeowners might need more energy in the future

Your needs are evolving. Your energy should too.

A growing family, hotter summers, or that new EV. Energy needs tend to go up and up. A traditional solar energy system might meet your needs today, but once you start using more energy, you'll have to pay the utility.
Here's how Sunrun Flex works

Step 1 - Forward-thinking system install

We design a system to meet your energy needs today, but we install enough panels & batteries to meet your needs tomorrow.

Step 2 - Pay only for today's usage

Start with a low monthly minimum bill that covers your current energy needs, with extra solar capacity available for when your energy needs grow.

Step 3 - Additional energy when you need it

When life changes and you need more energy, simply tap into your additional capacity at a low, locked-in rate (subject to an annual escalator). No system upgrades or construction needed.

Step 4 - Lock in low solar rates

While utility rates keep climbing, your Flex rate stays locked in. (Subject to an annual escalator) That means predictable bills today and protection from rate hikes tomorrow.

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See how Flex stacks up

Local utilities

  • Reliable, affordable power
  • Protects against rate hikes

    Traditional solar

    • Reliable, affordable power
    • Protection against rate hikes
    • Ability to access more solar energy without an oversized or second system

      Sunrun Flex

      • Reliable, affordable power
      • Flexibility to access more affordable solar power when you need it without an oversized or second system
      • Only pay for the energy you use*

        Get a quote

        *Subject to a monthly minimum bill

        FAQs

        It’s pretty simple. For customers who think they’ll increase power (which is typically what happens after going solar) Flex provides a ton of value. We don't recommend Flex to customers who know their usage will be going down or staying the same - for example, if your family is moving out, or if you know you're living elsewhere part time. 

        Sunrun doesn't own the additional energy your system produces. It's yours to use or export. If you are exporting that additional energy to the grid, the exact treatment for those exports depends on your state and utility.

        You should always expect to have at least a small utility bill. Even when solar offsets all of your energy needs, the utility will still require base fees for being connected to the grid. You’ll also pay for any energy you need beyond what your solar covers. This can change over time if the way you use energy - or when you use energy - changes. The great thing with Flex is it helps keep future utility costs low as your usage needs increase.

        Your utility bill is based on how much electricity you import from the utility and anything you send back from your solar. As you use more energy, you may also import more electricity from the grid. This would increase your utility bill.

        We estimate your usage based on the previous 12 months of your utility bills.  We take this

        annual number and divide it by 12 months to arrive at your levelized monthly pre-solar consumption.  We then size your System based on information you share with us your anticipated growing energy needs. 

        If 12 months of past utility bills were not available, we use your home's square footage to determine your Estimated Current Usage.

        You can carry over Rollover credits from one year to the next up to your Flex Monthly Baseline * 12.  You cannot carry over credits that bring you below your Flex Monthly Baseline * 12. As an example – if your pre-solar usage is 12,000 kWh, you have consumed 12,400 kWh and have -200 kWh in Rollover credits, those credits will carry over to the next year. If you consumed 11,800 kWh and have -200 kWh in Rollover credits, none of those credits will carry over to the next year.

        At the end of every 12-month period, Sunrun looks at (1) your annual pre-solar usage (used to calculate Flex Monthly Baseline); (2) the number of kWh charged at the Flex Rate; and (3) the total kWh produced by the System. If (3) - (1) is less than (2), you will receive an annual production adjustment, which is called our Flex Guarantee!

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