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    Request for Proposals (RFP)

    Request for Proposals (RFP)

    AES Indiana is focused on accelerating cleaner, more efficient and cost-effective energy solutions for our more than 500,000 customers.

    About AES Indiana

    AES Indiana is engaged primarily in generating, transmitting, distributing, and selling electric energy to more than 500,000 retail customers in Indianapolis and neighboring areas, with the most distant point being about 40 miles from Indianapolis. AES Indiana’s service area covers about 528 square miles. They are subject to the regulatory authority of the Indiana Utility Regulatory Commission (IURC) and the Federal Energy Regulatory Commission. They fully participate in the electricity markets managed by the Midcontinent Independent System Operator (MISO).

    AES Indiana is a transmission company member of Reliability First. Reliability First is one of eight Regional Reliability Councils under the North American Reliability Corporation, which has been designated as the Electric Reliability Organization under the EPAct. AES Indiana is part of the AES Corporation, a Fortune 500 global power company with a mission to improve lives by accelerating a safer and greener energy future.

    About the Request for Proposal (RFP)

    The purpose of this 2022 all-source RFP is to competitively procure energy and capacity in the near term and to inform AES Indiana’s 2022 Integrated Resource Plan (IRP) development. Competitive proposals for energy and capacity available beginning for the 2025–2026, 2026–2027, and/or 2027–2028 MISO Planning Years will be accepted for evaluation. AES Indiana will accept proposals of any range of energy and capacity. AES Indiana is interested in both Asset Transfer Agreements (ATAs) and Power Purchase Agreements (PPAs) for all viable replacement technologies to fill this potential capacity need. PPA durations may be as short as three (3) years and as long as 30 years. AES Indiana will also consider ATA proposals that can utilize the remaining interconnection rights associated with Petersburg Generating Station Unit 2 retirement, not to exceed 200 MW.

    This RFP is intended for energy and capacity and generation resources, preferably within or connected to, the AES Indiana service territory. Proposals will be accepted for all ranges of energy and capacity needs, including traditional and commercially ready untraditional technologies, including, but not limited to, thermal, wind, solar, battery energy storage, hydrogen, geothermal, biomass, or such combination of energy and capacity resources. AES Indiana will estimate the Unforced Capacity (UCAP) for solar resources from a fundamental view of solar penetration and contribution to peak load in alignment with (or similar to) the MISO Renewable Integration Impact Assessment dated February 2021. Wind UCAP will be estimated from the most recent MISO Effective Load Carrying Capability (“ELCC”) study. Proposed resources are required to deliver capacity to the MISO Local Resource Zone (LRZ) 6.



    About Sargent & LundyAES Indiana has contracted Sargent & Lundy to manage this RFP process. Sargent & Lundy is an engineering consulting firm providing comprehensive engineering, energy business consulting, and project services for power generation and delivery systems. Sargent & Lundy will act as an independent third-party consultant on behalf of AES Indiana to execute the RFP and evaluate proposals. Learn more about Sargent & Lundy at

    Additional resources

    Project scheduleRFP milestone dates and deadlines.

    RFP documentsLearn how to submit an RFP proposal.

    RFP Q&ARead RFP questions and answers.

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