# Participation of Distributed Energy Resource Aggregations in Markets Operated by Regional Transmission Organizations and Independent System Operators
> **US Department of Energy** · Final rule. · Published 2021-06-28 · Effective 2021-08-27 · 86 FR 33853
## Document
- **Document number:** 2021-13442
- **Category:** other
- **Sub-agency:** US Department of Energy
- **Federal Register citation:** 86 FR 33853
- **CFR reference:** 18 CFR 35
- **Publication date:** 2021-06-28
- **Effective date:** 2021-08-27
- **Energy docket:** Docket No. RM18-9-003
## Abstract

In this order, the Federal Energy Regulatory Commission (Commission) addresses arguments raised on rehearing, sets aside in part and clarifies in part Order No. 2222-A.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2021/06/28/2021-13442/participation-of-distributed-energy-resource-aggregations-in-markets-operated-by-regional)
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