National SREC Broker Comparison SREC Market Guide: SRECTrade vs. Sol Systems vs. Flett Exchange vs. Carbon Solutions Group vs. Knollwood Energy
Head-to-head forensic comparison of the 5 largest US residential SREC brokers and aggregators (SRECTrade, Sol Systems, Flett Exchange, Carbon Solutions Group, and Knollwood Energy): commission percentages, spot vs. upfront lump-sum traps, and how to switch brokers.
1. How the National SREC Broker Comparison SREC Market & Registration Process Works
Comparison 1 — Spot Market Brokerage (Flett Exchange & SRECTrade EasyREC / Brokerage: 5% to 7% Fee): If you live in a high-value or rising SREC state (Washington DC, Maryland, Virginia, Pennsylvania, Massachusetts Class I), the highest lifetime cash payout comes from Spot Market Brokerage. Flett Exchange runs a live online bid/ask exchange where you can sell minted SRECs yourself for a flat ~2.5%–5% fee with next-day ACH payout, while SRECTrade automates monthly meter reads and batch auctions for a 5%–10% commission.
Comparison 2 — Fixed 3-to-5 Year Annuity Strips (Sol Systems Sol Annuity): Sol Systems (based in Washington, DC) offers both a standard brokerage track (Sol Brokerage) and "Sol Annuity," which guarantees a fixed dollar payment per SREC for 3, 5, or 10 years—ideal for homeowners who want 100% predictable quarterly direct deposits with zero price-drop risk.
Comparison 3 — Upfront 15-Year Lump-Sum Checks (Carbon Solutions Group & Illinois Shines Approved Vendors): In Illinois (Illinois Shines ABP), 15 years of RECs are paid upfront by state law, where Carbon Solutions Group and SRECTrade compete on charging the lowest Approved Vendor fee (5%–9%). However, outside Illinois (in DC, MD, VA, PA), beware of "Upfront SREC Buyout" offers ("Sol Upfront")—because the broker discounts 15 years of future SRECs by 50%–65% for time-value and policy risk!
Comparison 4 — How to Fire a High-Fee Broker or Rescued Orphaned Account on PJM-GATS: Unless you signed a binding multi-year forward delivery contract (like a 15-year Illinois Shines or 3-year annuity contract), standard spot-market SREC brokerage agreements can be terminated with 30 days written notice, transferring your PJM-GATS or NEPOOL-GIS generator ID to a lower-fee broker for $0!
2. 10-Year SREC Cash Earnings & Incentive Stack Worksheet
Model Your System Payback →HEAD-TO-HEAD SREC BROKER & CONTRACT MODEL COMPARISON (2026) =================================================================================== Broker / Aggregator Primary States Spot Fee Best Contract Option ----------------------------------------------------------------------------------- 1. Flett Exchange DC, NJ, PA, MD, OH, VA 2.5% – 5% Self-Directed Spot Exchange (Fastest Cash) 2. SRECTrade DC, NJ, MA, IL, MD, PA 5% – 10% Hands-Free Automated API Meter Reads 3. Sol Systems DC, MD, VA, PA, OH, IL 5% – 9% 3–5 Yr Fixed "Sol Annuity" in DC/MD 4. Carbon Solutions Group IL, OH, PA, IN, Midwest 5% – 8% #1 Illinois Shines Lump-Sum Vendor 5. Knollwood Energy MA, NJ, PA, MD, DC 5% – 8% Legacy MA SREC-I/II & NEPOOL Class I
National SREC Broker Comparison SREC Trading & Tax FAQ
Why should I NEVER take a "15-Year Upfront Lump-Sum SREC Buyout" in Washington, DC, Maryland, or Virginia?
Look at the math in Washington, DC: a 10kW system earns ~$4,900 EVERY SINGLE YEAR on the spot market ($49,000 over 10 years!), whereas a 15-year upfront lump-sum buyout typically offers only $13,000–$16,000 one-time cash—meaning you give away over $33,000 of your own cash just to get paid early! Only use upfront REC payments in Illinois, where the state agency (IPA) mandates and funds full-value 15-year upfront payments.
How does my SREC broker know how many kWh my solar panels generated each month?
Modern aggregators (SRECTrade, Sol Systems, Carbon Solutions Group) link directly via cloud API to your Enphase Enlighten, SolarEdge Monitoring, or Tesla account so your revenue-grade inverter readings are submitted automatically to PJM-GATS / NEPOOL-GIS on the 1st of every month without you lifting a finger.
Can I register directly on PJM-GATS myself without using ANY broker at all?
Yes! Any homeowner can open a direct PJM-GATS Generator account at pjm-eis.com for $0 and transfer minted SRECs directly into Flett Exchange’s spot bid window or New Jersey’s InClime ADI portal—keeping 97.5% to 100% of every dollar!