©AGreen Energy, LLC, 2010. All rights reserved.
So what are we building?
©AGreen Energy, LLC, 2010. All rights reserved.
Quasar Facility – .25 acre – 300K gallons
Gas Membrane
Digestion Tank
Containerized Support Equipment
Specifications:
Complete Mix (30 day HRT)
100% Automated
Mesophilic (100 degrees F)
3 year performance guarantee
©AGreen Energy, LLC, 2010. All rights reserved.
Simplified Anaerobic Digestion Process
Manure
SSO
SSO
SSO
SSO Processing
Farm AD System Electricity/Heat
Digested Fiber
Recycled Fertilizer
©AGreen Energy, LLC, 2010. All rights reserved.
The Anaerobic Digestion Approval Environment
Manure
SSO
SSO
SSO
SSO Processing
Farm AD System Electricity/Heat
Digested Fiber
Recycled FertilizerDEP
DEP
MDAR
DEP
MDAR/APR NRCS
NRCS
DPUNGrid DEPMuni
©AGreen Energy, LLC, 2010. All rights reserved.
Anaerobic Digestion – GHG Reduction and Energy
Combustion of Methane:
CH4 + 2O2 CO2 + 2H2O
Transforms methane (Global Warming Potential of 21-25) to carbon dioxide (GWP of 1)
Replaces fossil fuel use for electricity generation and local heating
300kW GenSet 92.5% UptimeX = 2,430,900kWh per year
2,430,900kWh per year / 7,620 kWh per household =
319
Renewable Massachusetts Households per AD
©AGreen Energy, LLC, 2010. All rights reserved.
Benefits of Anaerobic Digestion Deployment
Host Farm- Reduced energy cost (electricity and heat)- Reduced manure odor/pathogen load w/ increased inorganic nitrogen content- Recycled nutrients for field fertilization- Animal bedding- New Farm Income
Local Community- Renewable power produced for export at high efficiency- Preservation and creation of local jobs- Reduced manure spreading odor- Recycled nutrients available for local agriculture- Preservation of agricultural heritage
The Commonwealth- Diversion of organic materials from landfills- Helps meet state renewable power goals- Attracts clean tech technology development
Our World Community- Reduces greenhouse gas emissions
©AGreen Energy, LLC, 2010. All rights reserved.
Challenges – Juggling Many Parties
Farms Organics Energy Funding
Utilities
Attributes
Workable net metering or feed-in tariff
Sale of excess electricityat close to retail
Short turn around for equity
Not bundled with energy
Cash Market
Scrape facilities
Use, or willing to switch to organic bedding
Truck Access (25 ton loads)
3 phase power service
Existing heat demand andwaste heat user
350-1,000 cows, or abilityto aggregate
Existing waste hauler
Allowances and incentivesfor organic waste diversion
Market size and currentCost of disposal
Fields with slight or no slope
Desire to control odor orenvironmental challenge
Proximity
Grant Programs
Equipment/ Construction
Equity and Loans
Interconnection requirement
Bonds
Equity Sources
Long term utility contract
Co-products
Organic fertilizer market
Soil amendment market
©AGreen Energy, LLC, 2010. All rights reserved.
Slide 9
US Dairy Farms vs Digester Deployment
©AGreen Energy, LLC, 2010. All rights reserved.
Goal of AGreen Energy – Smaller facilities, more output
Existing Sites - Vermont Herd kW (const.) kW / Cow
Blue Spruce Farm 950 148 .16
Green Mountain Dairy 1,050 208 .20
Montagne Farms 680 159 .23
Berkshire Cow Power, LLC 1,500 399 .27
Maxwell’s Neighborhood Energy, LLC 850 199 .23
Gervais Family Farm 950 89 .09
AgStar Average (Plugflow) 1,809 388 .20
AgStar Average (Complete Mix) 1,069 325 .29
Proposed CM w/ food waste system 350 210 .60
©AGreen Energy, LLC, 2010. All rights reserved.
Hof Oegens – 185kW, model facility
Important Characteristics
-Small herd (120 cows from two herds)-Large amount of non-manure substrate
-Use of waste heat for ag purposes-Commercial site
©AGreen Energy, LLC, 2010. All rights reserved.
Hof Oegen - CHP
185kW – containerized, quiet, process controls
Sends hot water to greenhouses as well as electricity to grid Sensor Reports
Containerized CHP
Output Meter
©AGreen Energy, LLC, 2010. All rights reserved.
Hof Oegen – Waste Heat Utilization
1,000m3 currently, heat production can support up to 4,000m3
Digester House/Barns Greenhouses
Waste Heat Use 25% 35% 40% (10% now)
Heat Exchanger
Soil Sterilizer
©AGreen Energy, LLC, 2010. All rights reserved.
How Much?
Project Funding – One Farm
Grants 1,050,000
Other Equity 800,000
Loan 900,000
Total: $2,750,000
Loan Guarantees 1,800,000
Project Spending – One Farm
Equipment 2,200,000
Fees 550,000
Total: $2,750,000
Going from One to Five Farms:
Project Challenge
First Farm:
All Set, Operational in 2010
©AGreen Energy, LLC, 2010. All rights reserved.
Future Business Development – More Farms Source Separated Organics
Facility planned utilization is 50%
Fifty-two dairy farms in MA of the correct size (five in this project)
Management, O&M, etc. built to scale with additional facilities
Small state size creates geographic efficiency in a uniform regulatory environment (transport distances) ?
©AGreen Energy, LLC, 2010. All rights reserved.
Future Business Development – CoProduct Dev.
EnerGro, a product developed by Clear Horizons to market their fiber product
A mixture of dried manure solids and other soil products
Inclusion of manure fibers adds nutrients (NPK)
Developed as a replacement to peat moss
Primarily used in container growing
©AGreen Energy, LLC, 2010. All rights reserved.
Future Business Development – Feedstock Dev.
Agricultural waste/non-market products
Develop when SSO markets have exhausted potential for growth
Grasses Corn Silage
©AGreen Energy, LLC, 2010. All rights reserved.
Future Business Development – Energy Products
Biogas, a mixture of carbon dioxide, methane, and other trace substances can be cleaned and used as an alternative to natural gas in existing CNG/NG engines
Can be injected into local NG grid
Market: off-site heating, CNG engines (buses), natural gas generators
Image: a biogas cleaning, compression, and injection facility owned by EWE AG
