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Assigned vs. Separated RINs: Understanding K1 and K2 Under the Renewable Fuel Standard

by Brianna Welsh | Feb 25, 2026 | RINs

If you’ve dipped your toes into the world of the Renewable Fuel Standard (RFS), you’ve likely bumped into the term RINs (Renewable Identification Numbers). These aren’t just random digits; they are the “currency” of the RFS program. However, a RIN’s...

2025 RIN Trends: How RINSTAR Data Compares to National RFS Activity

by Brianna Welsh | Jan 23, 2026 | RINs, RINSTAR News

As RFS compliance continues to evolve, 2025 provided helpful insight into how market participants are generating, trading, and managing RINs. Beyond high-level EPA totals, platform-level data offers a clearer picture of how compliance is handled day to day. We took a...

EPA News Grab Bag: Biodiesel Tax Credits, SAF Incentives & Key RFS Signals for 2026

by Brianna Welsh | Jan 7, 2026 | RFS Updates, RINs

As 2025 comes to a close, renewable fuels policy has seen no shortage of movement. From proposed tax credit reinstatements to renewed attention on sustainable aviation fuel incentives, several developments are already influencing market conversations. In this grab...

RIN Haircut Debate: How a 50% RIN Credit for Imports Could Reshape Biomass-Based Diesel Markets

by Brianna Welsh | Dec 19, 2025 | RFS Updates, RINs

Here at RINSTAR, we’ve been closely following the “Half RIN” debate because of its impacts across the market offering advantages for some obligated parties while creating new compliance considerations for others. Half RIN aka RIN Haircut is the proposed lowering of...

What Are Obligated Parties Under the RFS? Roles, Responsibilities & Compliance Support

by Brianna Welsh | Jun 17, 2025 | Renewable Energy, RINs

The Renewable Fuel Standard (RFS) program is a program that the renewable fuel industry is quite familiar with. Its main objective is to reduce greenhouse gas emissions, enhance energy independence, and support the domestic biofuels industry. To achieve these...

RIN Compliance Made Simple: Understanding D-Codes and Fuel Categories in the RFS

by Brianna Welsh | Jun 10, 2025 | RINs

Each RIN is tied to a specific type of renewable fuel, identified by what’s known as a “D-code.” These D-codes represent key details such as the feedstock used, the production process, and the level of greenhouse gas (GHG) emission reductions achieved. For producers,...
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Recent Posts

  • Assigned vs. Separated RINs: Understanding K1 and K2 Under the Renewable Fuel Standard
  • Treasury and IRS Release Proposed 45Z Clean Fuel Tax Credit Rules
  • Efficient Producer Petition (EP3) Guide for 2026: How Ethanol Plants Can Generate More RINs Under the RFS
  • EPA & Biofuels Roundup: Production Records, Policy Shifts, and Regulatory Updates
  • 2025 RIN Trends: How RINSTAR Data Compares to National RFS Activity
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