Policy · August 18, 2026 · 8 min read
FERC Order 2222 Explained: What It Means for VPPs in 2026
FERC Order 2222 requires regional transmission organizations to let aggregations of distributed energy resources compete in wholesale energy, capacity and ancillary services markets. The order set the principle; each ISO wrote its own tariff, and those differences decide whether a VPP can actually earn wholesale revenue in your region.
What the order actually requires
- Each RTO/ISO must create a participation model for DER aggregations.
- Aggregations of at least 100 kW must be eligible, mixing resource types and technologies.
- Aggregations may span multiple nodes subject to locational rules.
- Distribution utilities get a review role to protect local reliability, but cannot categorically block participation.
- Metering and telemetry rules must be workable for small devices, not copied from generator standards.
Where implementation stands by market
| Market | Aggregation model | Practical status |
|---|---|---|
| CAISO | DERP / aggregated resources | Longest-running model, predates the order |
| ISO-NE | DER aggregation participation model | Live, with settlement complexity |
| NYISO | Aggregation model | Live, dual participation rules matter |
| PJM | DER aggregation | Live; capacity qualification is the gating step |
| ERCOT | ADER pilot pathway | Pilot-based, not FERC-jurisdictional |
| MISO / SPP | Compliance implementation | Phased rollout with later effective dates |
ERCOT sits outside FERC jurisdiction, so Texas DER aggregation advances through ERCOT's own pilot rather than Order 2222 compliance.
The friction points that still matter
- Dual participation — whether a device in a retail utility program can also be bid into wholesale markets.
- Metering cost — sub-metering or telemetry requirements can exceed the revenue for small aggregations.
- Distribution utility review timelines that add months to registration.
- Locational granularity that fragments a fleet into too many small nodal aggregations to be economic.
- Settlement complexity that requires dedicated market operations staff.
What it means if you operate or buy VPP capacity
- Wholesale participation is a revenue add-on, not a replacement for utility programs, in most territories today.
- Ask an aggregator whether they are registered in the specific market, not whether the market allows it.
- Registration status and event history are stronger evidence than announced megawatts.
Frequently asked questions
What is FERC Order 2222 in simple terms?
It is a federal rule requiring wholesale electricity markets to allow groups of small distributed energy resources — batteries, EVs, thermostats, generators — to bid in together as a single resource.
Does Order 2222 apply in Texas?
No. ERCOT is not FERC-jurisdictional for these market rules, so Texas DER aggregation proceeds through ERCOT's own aggregated DER pilot pathway instead.
What is the minimum size for a DER aggregation?
Order 2222 sets the ceiling for that threshold at 100 kW, meaning ISOs cannot require aggregations to be larger than 100 kW to participate.
Find the operators serving your market
Compare source-linked VPP aggregators and flexible capacity providers by state, technology, and program status.
Keep reading
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