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Oregon Department of Energy Leading Oregon to a safe, clean, and sustainable energy future The Biogas / RNG Inventory Advisory Committee Meeting 3 January 11, 2018 Dan Avery 1 SB 334 RNG Advisory Committee Goals for today Metro

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  1. Oregon Department of Energy Leading Oregon to a safe, clean, and sustainable energy future The Biogas / RNG Inventory – Advisory Committee Meeting 3 January 11, 2018 Dan Avery 1

  2. SB 334 – RNG Advisory Committee Goals for today Metro Presentation Brief update on inventory work Develop and prioritize a list of barriers, opportunities and policy concepts that relate to the production and utilization of RNG in Oregon 2

  3. Chapter 1 _______________________________________________________________________________________________ A review of all the existing technologies available to this state for the conversion of biomass to biogas and RNG, including but not limited to anaerobic digestion and thermal gasification . Goal: define available and near future technology to create biogas, RNG. Establish conversion rates (feedstock to biogas to RNG) Work product: A written technical review on Thermal Gasification, Anaerobic Digestion, and other potential technologies (hydrothermal processing?) as well as biogas clean up – this is a 10/7/17 12/18/17 3/18/18 12/17/17 7/13/18 8/3/18 8/25/18 found literature review only. Generate a table that presents the estimated range of conversion 6/5/18 2/7/18 3/6/18 4/10/18 5/8/18 7/10/18 1/11/18 8/7/18 9/18/18 10/7/17 12/6/17 rates for various raw material to biogas by the different technologies. A second table will show the resulting amount of RNG after biogas is cleaned to pipeline standards. At each step identify where there are losses of gas and losses through conversion efficiency. Group Questions: How much detail and how deep should we go for each technology? Are there other gas production technologies we should investigate and where do we draw the line for this initial 2018 report? Should we present a variety of pipeline gas standards at this point or elsewhere in a separate discussion? 3

  4. Chapter 2 _______________________________________________________________________________________________ Section 1 (2) (a) A list of potential biogas and renewable natural gas sources in this state and the estimated potential production quantities available at each source (b) An estimated energy content of listed potential biogas and renewable natural gas sources: Feedstocks CH4 scf and BTUs 10/7/17 Gross Gross 12/18/17 3/18/18 12/17/17 7/13/18 8/3/18 8/25/18 theoretical theoretical 6/5/18 2/7/18 3/6/18 4/10/18 5/8/18 • minus 7/10/18 1/11/18 8/7/18 9/18/18 10/7/17 12/6/17 • minus amount amount • By Conversion Practical • Transportation, production access, storage, efficiency technology limitations preprocessing and clean up • Feedstocks • CH4 available in Net amount Net amount Available tons, gallons, scf By county and feedstock By county and feedstock 4

  5. Chapter 2 table ( table numbers are fictional ) _______________________________________________________________________________________________ County Feedstock Gross Volume Net Volume Net BTUs CH4 scf Biogas Lincoln Ag Manure 100,00 wet 30,000 tons 19,617,000,000 19,617,000 30,180,000 tons Food Waste 500 wet tons 300 tons WWT 1M gallons 1M gallons 12/18/17 3/18/18 12/17/17 7/13/18 8/3/18 8/25/18 7/10/18 LF 10 million 6/5/18 2/7/18 3/6/18 4/10/18 5/8/18 1/11/18 8/7/18 9/18/18 10/7/17 12/6/17 tons Forest 9 million bone Residuals dry tons Agricultural 3 million bone Residuals dry tons County total 5

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  7. SB 334 Assignments The department shall appoint an advisory committee to assist in developing, maintaining and periodically updating the inventory required by this section. The committee must include but not be limited to persons familiar with the renewable natural gas industry. The Committee shall make recommendations to the department: (a) Regarding the identification and removal of barriers to producing and utilizing biogas and renewable natural gas in this state as a means toward providing the greatest feasible reductions in greenhouse gas emissions and improvements in air quality; (b) On establishing policies to promote renewable natural gas; and (c) On any other matters related to this section, as requested by the department. 7

  8. Risk Categories Producers Developers Local Distribution Companies Fleets Government 8

  9. Policy, Barriers, and Opportunities Long Term Policy Short Term Policy Regulatory Barriers Commercial Barriers General Opportunities 9

  10. Questions Dan Avery Oregon Department of Energy 503-373-2295 Daniel.Avery@Oregon.Gov 10

  11. Example Example for anaerobic digestion What about other technology like thermal gasification or? 11

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