SRECs, SMART and Performance Incentives

Overview

Not every solar incentive is a discount on the invoice. Some programs pay you for energy the system produces, sometimes for ten, fifteen or twenty years. Those payments can be worth thousands of dollars, but they depend on registration, a capacity block, a utility territory, and the continued existence of a market. That is precisely why HelioCalc does not put them into a default 25-year projection: an invented SREC price is worse than an omitted one.

Upfront vs production-based

An upfront credit or rebate reduces net cost once, at the start — easy to model and easy to verify. A production incentive pays per kWh or per MWh generated, so its value depends on realized output, the program's rate, the contract term and whether the rate is fixed or market-traded. New Jersey's SuSI / ADI program and Massachusetts' SMART are the clearest U.S. examples; Illinois Shines pays an upfront REC amount that behaves more like the first category.

Why the owner matters

In a lease or PPA, the third-party owner usually holds the environmental attributes and the associated incentive revenue, not the homeowner. If a proposal includes SREC income while also saying the provider owns the RECs, ask the question directly. Ownership of a certificate and the right to claim an environmental benefit are the same issue.

How to include a confirmed amount

If you have a written, program-specific dollar figure, enter it in the utility rebate field on the calculator. For a per-kWh program, multiply the confirmed rate by modeled first-year production and enter that as a one-time rebate — then note in your own working that the real program pays over many years, so a one-time entry is an approximation. For a rigorous comparison, build a year-by-year schedule with the program's actual term.

Verification before reliance

Check DSIRE for program status, then the program administrator for the current block, rate and waitlist, then the utility for eligibility. Programs close, budgets fill, and rates step down by capacity block. A 2024 brochure is not a 2026 entitlement.

Key figures worth keeping

• One MWh — the generation represented by one SREC.
• 10–20 years — the typical payment term of successor production programs.
• $0 — the amount HelioCalc models by default for any production incentive.
• 15 years — the term commonly quoted for New Jersey's successor program.
• One — the party that can claim the environmental attribute: the REC owner.

How this shows up in a real estimate

If you have a confirmed per-kWh rate, the honest way to put it into this model is as an approximation that you label yourself. Multiply the confirmed rate by modeled first-year production, enter the result in the utility rebate field, and note that a real program pays over many years while the model treats it as a single upfront reduction. That will slightly overstate NPV. For a decision involving real money, build a separate year-by-year schedule with the program's actual term and step-downs, and ask who owns the certificates before assuming any of the income reaches you.

Checklist before you decide

• Check the REC ownership clause in any lease or PPA.
• Confirm the current capacity block, rate and waitlist with the administrator.
• Enter only a written, program-specific figure in the rebate field.
• Ask a tax professional how a specific payment is treated.
• Do not count a program that closed in a prior year.