DC SREC income: what it is, what it pays, and why it's declining

If a solar company is pitching you a loan and showing you SREC income as a reason to say yes — read this first. DC SRECs are real income, but the number they're showing you today is not the number you'll be earning in year 10 or year 15.

What is an SREC?

SREC stands for Solar Renewable Energy Certificate. Every time your solar system generates one megawatt-hour (1,000 kWh) of electricity, it earns one SREC. That certificate can then be sold to electric utility companies in DC who are required by law to source a certain percentage of their electricity from solar energy.

If they don't meet that requirement, they pay a penalty called the Solar Alternative Compliance Payment, or SACP. The SACP effectively sets a ceiling on what SRECs can be worth — utilities will only buy SRECs up to the price of the penalty they're avoiding.

Why DC has one of the strongest SREC markets in the country

Washington DC has unusually strict renewable energy requirements. The District has committed to 100% renewable energy by 2032, with a specific solar carve-out that requires an increasing percentage of electricity to come from solar specifically. Because DC is a dense urban area with limited roof space and challenging infrastructure, solar supply has consistently fallen short of these ambitious targets.

That gap between what's required and what's actually installed has kept DC SREC prices far above other states. While SREC prices in Maryland or New Jersey may trade at $20 to $40 per credit, DC SRECs have consistently stayed in the hundreds of dollars — making DC one of the most lucrative solar markets in the entire country for system owners.

The SREC decline curve — what the data shows

Here is the part most solar loan salespeople skip entirely: DC SREC prices are on a structured, legislated downward path. The SACP — the ceiling that determines maximum SREC value — decreases on a fixed schedule set by DC law. As that ceiling drops, so does the maximum value of your SRECs.

At the same time, more solar is being installed across DC every year, gradually closing the supply gap that has kept prices high. More supply plus a lower ceiling equals lower prices over time. This is not speculation — it is baked into DC's renewable energy legislation.

These projections are based on the DC SACP schedule and current market supply trends. They represent a gradual decline — not a crash — but the direction is clear and consistent. By the time a 20-year solar loan reaches its halfway point, SREC income will likely be roughly half of what it is today.

How this affects solar loan math

This is where things get important. When a solar company shows you the financial case for a loan, they typically use today's SREC price to calculate your "income" from the system. The pitch looks like this: your loan payment is $170/month, but your SREC income is $339/month — so solar is actually making you money.

That math is accurate in year 1. It becomes increasingly misleading as the years go on.

This is not a niche concern or a worst-case scenario. It is the predictable, legislated trajectory of the DC SREC market. Any solar professional who presents SREC income without disclosing this decline curve is not giving you complete information.

What about a free PPA — does SREC decline matter?

With a free PPA, SREC income goes to the solar company — not you. At first glance this sounds like a disadvantage. But consider what you're trading: you're trading SREC income (which is declining) for $0/month electricity costs (which are locked in forever) and zero loan risk.

As SREC prices fall over the coming decade, the economic advantage of owning a solar system diminishes. As Pepco rates rise — which they will, based on every approved rate plan currently in place — the value of generating your own free electricity grows. A free PPA positions you on the right side of both of those trends simultaneously.

What to ask if you're being sold a solar loan

If a solar consultant is presenting a loan using SREC income as part of the financial case, ask these questions directly:

What will SREC prices be in year 5, year 10, and year 15? Can you show me the projected income at those prices, not just today's rate? What is my net monthly cost in year 10 if SREC prices drop to $200 per credit? What is the total amount I repay over the life of this loan including all fees?

A consultant who answers these questions clearly and honestly is someone worth working with. A consultant who deflects, minimizes, or says "SREC prices will stay strong" without evidence is not giving you the full picture.