This is about the size needed for the 200 to 600 cow operations specifically designed for the MA farms. This is a 300K gallon tank, with organics arriving on the site in a 6K gallon tanker truck, pumped into a storage tank, and blended with the animal waste. No organic sees the light of day. Permits are under the composting rules of the DEP. There also need to be positive rules from the net metering — allowing for the new virtual metering interpretation where behind the meter and for the excess the farms receive the retail price. The MA Green Communities Act passed in July 2008 provides for this. The contemplated revisions to the MA composting rules will also recognize digesters as a form capable of taking organic waste onto the farm in the quantities needed.
We welcome comments and suggestions.
Recycling Organics thru Sm. Farm Anaerobic Digestion - Snellings
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
Simplified Anaerobic Digestion Process Manure SSO SSO SSO SSO Processing Farm AD System Electricity/Heat Digested Fiber Recycled Fertilizer
The Anaerobic Digestion Approval Environment Manure SSO SSO SSO SSO Processing Farm AD System Electricity/Heat Digested Fiber Recycled Fertilizer DEP DEP MDAR DEP MDAR/APR NRCS NRCS DPU NGrid DEP Muni
Anaerobic Digestion – GHG Reduction and Energy <ul><li>Combustion of Methane: </li></ul><ul><li>CH 4 + 2O 2 CO 2 + 2H 2 O </li></ul><ul><li>Transforms methane (Global Warming Potential of 21-25) to carbon dioxide (GWP of 1) </li></ul><ul><li>Replaces fossil fuel use for electricity generation and local heating </li></ul>300kW GenSet 92.5% Uptime X = 2,430,900kWh per year 2,430,900kWh per year / 7,620 kWh per household = 319 Renewable Massachusetts Households per AD
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
Challenges – Juggling Many Parties Farms Organics Energy Funding Utilities Attributes Workable net metering or feed-in tariff Sale of excess electricity at 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 and waste heat user 350-1,000 cows, or ability to aggregate Existing waste hauler Allowances and incentives for organic waste diversion Market size and current Cost of disposal Fields with slight or no slope Desire to control odor or environmental 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
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
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
Hof Oegen - CHP <ul><li>185kW – containerized, quiet, process controls </li></ul><ul><li>Sends hot water to greenhouses as well as electricity to grid </li></ul>Sensor Reports Containerized CHP Output Meter
Hof Oegen – Waste Heat Utilization <ul><li>1,000m3 currently, heat production can support up to 4,000m3 </li></ul>Heat Exchanger Soil Sterilizer Digester House/Barns Greenhouses Waste Heat Use 25% 35% 40% (10% now)
How Much? Going from One to Five Farms: Project Challenge First Farm: All Set, Operational in 2010 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
Future Business Development – More Farms <ul><li>Source Separated Organics Facility planned utilization is 50% </li></ul><ul><li>Fifty-two dairy farms in MA of the correct size (five in this project) </li></ul><ul><li>Management, O&M, etc. built to scale with additional facilities </li></ul><ul><li>Small state size creates geographic efficiency in a uniform regulatory environment (transport distances) </li></ul>?
Future Business Development – CoProduct Dev. <ul><li>EnerGro, a product developed by Clear Horizons to market their fiber product </li></ul><ul><li>A mixture of dried manure solids and other soil products </li></ul><ul><li>Inclusion of manure fibers adds nutrients (NPK) </li></ul><ul><li>Developed as a replacement to peat moss </li></ul><ul><li>Primarily used in container growing </li></ul>
Future Business Development – Feedstock Dev. <ul><li>Agricultural waste/non-market products </li></ul><ul><li>Develop when SSO markets have exhausted potential for growth </li></ul>Grasses Corn Silage
Future Business Development – Energy Products <ul><li>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 </li></ul><ul><li>Can be injected into local NG grid </li></ul><ul><li>Market: off-site heating, CNG engines (buses), natural gas generators </li></ul><ul><li>Image: a biogas cleaning, compression, and injection facility owned by EWE AG </li></ul>
Thank You Sam Snellings AGreen Energy, LLC 580 Harrison Ave, Suite 404 Boston, Massachusetts 02109 339-235-0145 [email_address] (and thanks to the EPA AgStar program, the USDA, NRCS, the APR Program, the Massachusetts Department of Environmental Protection, the Massachusetts Department of Agricultural Resources, The Massachusetts Department of Public Utilities, MassCEC, Western Mass Electric Company, New England Organics, Quasar Energy Group, Rockville Farm, Barstow’s Longview Farm, Jordan Dairy Farms, Hager Brother’s Farm, National Grid, Mary Greendale, Energy Consumers Alliance of New England, Sebesta Blomberg, First Pioneer Farm Credit, Farm Viability, Brown and Caldwell, TechEnvironmental… and the dozens of other organizations and individuals who have helped over the past two years to make this all a reality)