Green Plains : and Green Plains Partners Investor Presentation

Investor Presentation

September | 2023

Forward-Looking Statements

This presentation includes forward-looking statements that reflect management's current views of company performance, industry conditions and future economic environment. These statements are based on assumptions and various factors that are subject to risks and uncertainties. Green Plains has provided additional information about such risks and uncertainties that could cause actual results to differ materially from those expressed or implied in its reports filed with the Securities and Exchange Commission.

Forward-looking statements are made in accordance with safe harbor provisions of the Private Securities Litigation Reform Act of 1995. These statements are based on current expectations which involve a number of risks and uncertainties and do not relate strictly to historical or current facts, but rather to plans and objectives for future operations. These statements include words such as "anticipate," "believe," "continue," "estimate," "expect," "intend," "outlook," "plan," "predict," "may," "could," "should," "will" and similar words and phrases as well as statements regarding future operating or financial performance or guidance, business strategy, environment, key trends and benefits of actual or planned acquisitions.

Factors that could cause actual results to differ from those expressed or implied are discussed in this report under "Risk Factors" or incorporated by reference. Specifically, we may experience fluctuations in future operating results due to a number of economic conditions, including: disruption caused by health epidemics, such as the COVID-19 outbreak; competition in the ethanol industry and other industries in which we operate; commodity market risks, including those that may result from weather conditions; financial market risks; counterparty risks; risks associated with changes to government policy or regulation, including changes to tax laws; risks related to acquisitions and disposition activities and achieving anticipated results; risks associated with merchant trading; risks related to our equity method investees and other factors detailed in reports filed with the SEC.

We believe our expectations regarding future events are based on reasonable assumptions; however, these assumptions may not be accurate or account for all risks and uncertainties. Consequently, forward-looking statements are not guaranteed. Actual results may vary materially from those expressed or implied in our forward- looking statements. In addition, we are not obligated and do not intend to update our forward-looking statements as a result of new information unless it is required by applicable securities laws. We caution investors not to place undue reliance on forward-looking statements, which represent management's views as of the date of this report or documents incorporated by reference.

This presentation also includes estimated projections of future operating results. This information is not fact and should not be relied upon as being necessarily indicative of future results; the projections were prepared in good faith by management and are based on numerous assumptions that may prove to be wrong. Important factors that may affect actual results and cause the projections to not be achieved include, but are not limited to, risks and uncertainties relating to the company and other factors described under "Risk Factors" sections of the Company's Annual Report on Form 10-K . Actual results may differ materially from those contained in the estimates. Accordingly, there can be no assurance that the estimates will be realized.

Neither the SEC nor any other regulatory body has passed upon the accuracy or adequacy of this presentation. Any representation to the contrary is a criminal offense. Except as otherwise indicated, this presentation speaks as of the date hereof. The delivery of this presentation shall not, under any circumstances, create any implication that there has been no change in the affairs of the company after the date hereof.

Certain of the information contained herein may be derived from information provided by industry sources. While the company believes that such information is accurate and that the sources from which it has been obtained are reliable, it has not independently verified data from these third-party sources.

2	GREEN PLAINS INC.

Green Plains - A Technology Driven Producer of Low Carbon Ingredients

Operational Areas

		Produces ~900MM gallons of ethanol annually across 10 biorefineries
	Ethanol Production	Produces ~2MM of equivalent dried tons in distillers grain annually
	Processes more than 10MM tons of corn, originating more than 300MM
		bushels of corn annually through more than 5,000 farmer customers
	Fluid Quip	Owns intellectual property driving the growth of DCO Tech™, MSC™ Ultra-
	Technologies(1)	High Protein and CST™; with over 40 patents and more pending
		DCO capacity of ~300MMlbs today and approaching ~375MMlbs / y by
	Renewable Corn Oil
		2025
	Ultra-High Protein	MSC™ technology installation expected to produce ~480K tons of Ultra-
	High Protein by 2025
	Clean Sugar	Expected to have ~500MMlbs / y of CST™ capacity by 2026 while only
	Technology	converting ~ 4% of platform corn grind
		Opportunity to remove ~2MM metric tons of CO2 from the atmosphere
	Carbon Reduction	through planned carbon pipeline initiatives and potential upside direct
		inject initiatives with attractive economics
			Green Plains Today
	$2.5Bn Enterprise Value (1)	3 Innovation Centers

$1.9Bn Equity Value (1)

Own and Control Disruptive Ag-Tech IP Portfolio

Biorefineries

3	GREEN PLAINS INC.

1 Equity values as of Sep 1, 2023, Balance Sheet values as of June 30, 2023

We are transforming our assets for a low-carbon future

UNDER OUR GREEN PLAINS 2.0

TRANSFORMATION, WE ARE:

Executing across four strategic areas of growth - value-added ingredients, renewable corn oil, clean sugar and carbon capture - to achieve our long- term goals and lead the way to a low- carbon future.

4	GREEN PLAINS INC.

Transformation in Biofuels is Happening Today

• Technologies, such as those provided by Fluid Quip Technologies, are driving the transition to a biocampus model
• • Low-carbonintensity proteins
  • Low-carbonintensity renewable corn oil
  • Low-carbonintensity dextrose syrups
  • Low-carbonintensity biofuels
• Biofuel is lowering its carbon intensity and is incentivized by provisions in the IRA to pursue
• • CCUS
  • Cogeneration / combined heat and power
  • Renewable energy sources
  • Regenerative farming
• Low-carbonintensity biofuels can serve as crucial feedstocks in the development of Sustainable Aviation Fuels

5	GREEN PLAINS INC.