How do I use the Commercial Anaerobic Digester & Biogas-to-RNG Economic Sizer?

Enter your specific project or financial parameters into the input fields above. The engine recalculates outputs dynamically in real time and updates visual charts and summary metrics.

Can I export and share these results?

Yes, you can generate shareable state links, export clean CSV spreadsheets, or print high-resolution executive reports with a single click.

Is this calculator free to use?

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EPA AgSTAR & RFS2 D3 Pathways • Renewable Natural Gas

Commercial Anaerobic Digester & Biogas-to-RNG Sizer

Model dairy manure, swine, wastewater sludge, and organic food waste digestion kinetics. Size membrane gas scrubbers to pipeline-quality Renewable Natural Gas (RNG), underwrite EPA RFS D3 RINs, California LCFS carbon credits, and Section 48 ITC tax monetization.

🐄 Feedstock & Digestion Kinetics

Primary Feedstock Profile

Animal Units / Tons per Day

Biogas Yield (ft³/head-day)

Raw Methane Purity (% CH₄)

Membrane Upgrading Recovery (%)

Hydraulic Retention Time (Days)

Total Plant CapEx ($)

💵 Commodity, RIN & Carbon Credits

Pipeline Gas Offtake ($/MMBtu)

EPA D3 RIN Price ($/RIN)

Carbon Intensity (CI Score)

CA LCFS Credit Price ($/MT)

Annual O&M Expense ($)

Section 48 ITC Credit (%)

Raw Biogas Production

292 SCFM

420,000 ft³/day gross output

Pipeline RNG Injected

90,300 MMBtu

>98% pipeline spec biomethane

Blended Value per MMBtu

$64.80 / MMBtu

Commodity + D3 RIN + LCFS

Annual Revenue Stacking vs. Operating Expenditures RFS2 / LCFS HARVEST

Pipeline Natural Gas Commodity Sales: +$316,050 / yr

EPA RFS D3 Renewable Identification Numbers (RINs): +$3,282,600 / yr

California LCFS Clean Carbon Intensity Credits: +$2,253,400 / yr

(-) Plant Power, Media, Enzymes & Upgrading O&M: -$750,000 / yr

Net Annual EBITDA Cash Flow: +$5,102,050 / yr

CapEx, Tax Credit Monetization & Payback

Gross Project CapEx

$12,500,000

Section 48 ITC

-$3,750,000

Simple Payback

1.7 Years

Under the Inflation Reduction Act (IRA), commercial biogas upgrading and anaerobic digester property qualify as Section 48 Investment Tax Credit (ITC) property. Dairy manure digesters achieve deeply negative Carbon Intensity (-250 to -350 CI), commanding premium transportation fuel prices across California LCFS and EPA Renewable Fuel Standard (RFS) markets.

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