Community & shared solar

Credit rate vs utility rate tool

Check whether your bill credit rate is a fair baseline before the discount even applies. This gap matters more than most subscribers realize.

Your numbers

1 Project details Optional
Shown on your exported report. Leave blank to skip.
2 Both rates
Check your community solar contract or your utility's tariff page.
Your standard rate without community solar, found on your bill.
3 Subscription discount and usage

How it works

Three steps to checking the gap

Step 1

Get both rates from real sources

Your utility rate is on your bill. The credit rate is in your community solar contract or your utility's tariff filing. Don't assume they're equal without checking, and don't rely on the quick savings estimator for this specific check since it assumes the two rates match.

Step 2

Look at the baseline gap before the discount

This is the step most subscribers skip. A discount looks good on paper but means less if it's applied to a credit rate that's already below your retail rate. See the provider comparison tool to check this across multiple offers at once.

Step 3

Check the real net savings number

The final figure accounts for both the baseline gap and the discount together. Compare it against the subscription cost per kWh tool for a second angle on the same math.

Understanding the two-rate structure

Why two separate rates even exist

Your utility rate is what you'd pay without any community solar involvement. The bill credit rate is a separate figure, set by your utility or state regulator, that determines how much your subscription share is worth on your bill. In most states these two rates are set equal, but that's a policy choice, not a law of physics, and it varies by state. See how this rate translates into monthly credits with the credit allocation estimator. The avoided cost rate calculator covers the related rate a utility uses when it isn't crediting at the full retail rate.

What it means when the credit rate is below the utility rate

If your credit rate starts below your utility rate before any subscription discount, you need a bigger discount just to reach parity with your normal bill. A credit rate 20% below the utility rate paired with a 10% subscription discount can leave you paying more overall than staying with your utility bill alone, depending on the exact numbers. Run the subscription savings calculator to see this play out over a full contract term. The Department of Energy's community solar basics guide covers the general bill-credit mechanism this comparison depends on.

The less obvious case: credit rate above utility rate

Some states use a value of solar tariff that sets the credit rate higher than the standard retail rate, to reflect the broader grid value of solar generation. In this case a smaller advertised discount can still deliver strong real savings, since the starting point is already favorable. Don't judge an offer by discount percentage alone without checking this baseline. The DSIRE database lays out the same rules from the regulator's side.

What to do with a concerning result

If your net savings number comes back negative or very small, ask the provider directly whether the credit rate is fixed by state policy or negotiable, and compare the full effective rate using the subscription cost per kWh tool. A negative result doesn't always mean walk away, but it does mean read the contract carefully. The savings calculator by utility rate is a useful cross-check against what a rooftop system would deliver at your same starting utility rate. Check the DSIRE database for how your specific state regulates this rate, since the rules vary widely.

Questions

Frequently asked

In most states, yes, community solar credit rates are set to match the retail utility rate one for one, so the discount you're offered translates directly into real savings. In a smaller number of states, credit rates are set below retail value, which changes the math significantly.

If the bill credit rate sits below your retail utility rate before any subscription discount, you need a larger discount percentage just to break even with your regular bill. Always check the credit rate itself, not just the advertised discount, before assuming a subscription saves money.

Yes, some states use a value of solar tariff that credits community solar production at a rate different from, and sometimes higher than, standard retail rates. When this happens, a modest discount off that higher credit rate can still land close to or above your normal utility rate, so check the actual net rate carefully.

Check your utility's community solar or net metering tariff page, or ask the provider directly during enrollment, since this rate is set by regulation and doesn't vary between providers in the same utility territory. Your community solar contract should also state it explicitly.

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