This document discusses renewable compressed natural gas (CNG) as a vehicle fuel from biogas. It provides an overview of BioCNG, a company that develops biogas upgrading systems to produce CNG. The presentation then covers the benefits of biogas energy conversion to CNG, including lower fuel costs and greenhouse gas reductions compared to gasoline and diesel. Examples are given of BioCNG systems installed at wastewater treatment plants and landfills that produce CNG to fuel local vehicle fleets in a cost-effective and sustainable manner.
2. Presentation Overview
BioCNG Company Overview
Potential of Biogas Energy
City of Janesville
BioCNG Benefits
Q & A
3. 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
4. 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)
5. 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
6. 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.
7. Characteristics of Biogas Projects
Small scale producers of biogas
High quality, low contaminant gas
May have a captive vehicle fleet
8. Trucks & Buses Shifting To CNG: Cleaner, Quieter & Cheaper Fuel Fleets, Communities & Drivers Love Them
12. 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
15. South Transfer Station Sacramento, CA
Clean World now has a BioCNG 100 and a BioCNG 200 commissioning this year.
16. 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
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*
Carbon Intensity
Fuel Type and Pathway
Carbon Intensity for Fuels and Renewable Substitute
gCO2e/MJ
18. 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
19. 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