Renewable CNG Vehicle Fuel

Wisconsin Clean Cities NG Roundtable

October 23, 2014

Presentation Overview

BioCNG Company Overview

Potential of Biogas Energy

City of Janesville

BioCNG Benefits

Q & A

BioCNG Overview

BioCNG, LLC

Sales and Marketing for BioCNG

Formed in 2010-First system was piloted at the Dane

County Landfill in Madison WI

Headquarters in Madison, WI

Unison Solutions, LLC - Exclusive manufacturer of the

BioCNG system

Cornerstone Environmental Group-Engineering Services

Design

Project Management

Permitting

Energy Values to Consider

Gasoline= 33.4 kWh/gallon energy content

$0.12/kWh @ $4.00/gallon

CNG

$0.07/kWh@ $2.50/gasoline gallon

equivalent (GGE)

Energy Conversion

30 to 40% of biogas energy can be

converted to electricity

70 to 90+% of biogas methane can be

recovered as CNG vehicle fuel

O & M Cost Example

Biogas upgrading= $0.36/GGE

CNG Fueling Station= $0.20/GGE

$0.56/GGE

$0.017/kWh Compare to co-generation.

Characteristics of Biogas

Projects

Small scale producers of biogas

High quality, low contaminant gas

May have a captive vehicle fleet

Trucks & Buses Shifting To CNG: Cleaner, Quieter & Cheaper Fuel Fleets, Communities & Drivers Love Them

Gas Upgrading Technology

BioCNG 100 Gas Cleanup Skid

Putting it All Together

Project Sites

City of Janesville, WI

WWTP Digester

100 gallons gasoline

equivalent storage

sphere.

Fill-up time

comparable to

conventional fuel

station.

Gas treatment and microturbines inside

Digester with gas storage

Chiller Compressor

Fuel dispenser

High Pressure

Gas Storage

Persigo WWTP, Grand Junction CO

Pipeline

South San Francisco Blueline

South Transfer Station

Sacramento, CA

Clean World now has a BioCNG

100 and a BioCNG 200

commissioning this year.

Biogas/Vehicle Fuel System

Information

System Size Biogas Inlet

Flow (scfm)

Fuel

Production (GGE/day)

Fleet Size Per Unit

Light duty Heavy duty

BioCNG 50 50 200-300 20-27 2-4

BioCNG 100 100 375-600 38-55 5-8

BioCNG 200 200 775-1200 77-110 11-17

95

75

13

-15

-48

-65 -80

-60

-40

-20

0

20

40

60

80

100

120

Diesel CNG RNG-Landfill RNG- Dry AD RNG- Wet AD RNG-WWTP*

Carb

on I

nte

nsi

ty

Fuel Type and Pathway

Carbon Intensity for Fuels and Renewable Substitute gCO2e/MJ

Biogas-to-CNG Benefits

• Green Fueling Infrastructure

– Distributed cleaner, greener infrastructure

• Greenhouse gas reductions

– Negative Carbon Intensity Pathway

• Homegrown Fuel

– Fuel savings (and credits) accrue to local public and private entities

– Infrastructure primarily from local sources - GC, electric,

construction, permitting, fueling station

• Significant cost savings

– 50-75% savings over current gas/diesel cost

• Control and distributed source

– Fuel cost locked in for 15-20 years

Biogas-to-CNG Summary

Low cost fuel and fixed long term

Short-term pay back with w/RINS and credits

Compatible with all CNG infrastructure

Greenest fuel

Fits the scale of digester projects

Questions