Once you understand why community solar programs exist and how projects generally work, the next important question is: how do subscribers pay for the credits they receive?
In most cases, the answer is straightforward. Community solar providers structure payments so subscribers receive bill credits from a solar project, then pay the provider for a portion of those credits.
The most common structure is a Fixed % Discount. Other models exist, but they are less common and usually apply in more specific circumstances.
The Main Contract Structures
Community solar contracts are usually built around one of three payment structures:
- Fixed % Discount — the most common and generally simplest model.
- Fixed $/kWh Discount — less common, but sometimes used when subscribers want a fixed savings amount per unit of energy.
- Fixed $/kWh Payment — rare in community solar and generally more relevant for larger or more sophisticated energy deals.
Fixed % Discount: The Most Common Model
The Fixed % Discount model is the most common community solar structure because it is easy to understand and keeps the subscriber’s savings tied directly to the value of the credits received.
Under this model, you receive bill credits on your utility bill, then pay the community solar provider a fixed percentage of the value of those credits. For example, if the program offers a 10% discount, you pay 90% of the credit value and keep the remaining 10% as savings.
If the credit value rises, your dollar savings rise too. If the credit value falls, your savings may shrink, but the structure is still designed so you are paying less than the value received.
Why it is common
The Fixed % Discount model is popular because it is simple, low-risk, and intuitive. Subscribers do not need to make a complicated forecast about future energy prices to understand the benefit.
For most homeowners, renters, apartment dwellers, nonprofits, and businesses, this is the structure they are most likely to see.
Fixed $/kWh Discount: More Predictable, Less Common
A Fixed $/kWh Discount model gives the subscriber a set savings amount for each unit of solar production.
For example, if your discount is $0.02/kWh, you save that amount regardless of whether the bill credit value is higher or lower in the future.
This can be useful for subscribers who value steady, easy-to-model savings. However, it is less common than the Fixed % Discount model and may not provide the same upside if credit values increase over time.
Fixed $/kWh Payment: Rare and More Market-Dependent
A Fixed $/kWh Payment model works differently. Instead of guaranteeing a fixed discount, the subscriber agrees to pay a fixed price for the solar credits.
If the bill credit value is higher than the fixed payment, the subscriber saves money. If the bill credit value is lower, savings can shrink or potentially disappear.
Because this structure depends more heavily on future credit values, it is much less common in standard community solar subscriptions. It is generally more relevant for larger organizations or more customized energy agreements.
What Most Subscribers Should Expect
For most residential subscribers and small businesses, the Fixed % Discount model is the standard structure to expect.
That is a good thing. It keeps the relationship simple: credits appear on your utility bill, you pay less than the value of those credits, and the difference becomes your savings.
Other structures can still be useful in certain situations, but they are more niche. The right fit depends on the subscriber’s goals, risk tolerance, utility rules, and the specific project terms.
Turquoise Trail helps subscribers understand the structure being offered so they can compare options clearly and choose a community solar program that fits their needs.