About

A public-beta directory of flexible capacity in U.S. power markets

VPPdirectory is an independent public-beta directory of Virtual Power Plants, aggregators, demand response programs, and flexible capacity providers, with launch coverage focused on U.S. programs and markets.

Publisher and editorial contact

Jared Theaman publishes VPPdirectory. Send questions about a guide, source or correction to jared@clauffice.com. Articles identify their publisher and review date. A review covers the claims described in its review note; it does not certify equipment, approve enrollment or establish an independent engineering review. See the methodology and correction history.

Commercial relationships and editorial scope

VPPdirectory offers paid placement and editorial support through its provider plans. Featured placement is not an endorsement, independent engineering review or proof of available capacity. Capacity comparisons use the documented reporting basis and evidence rules; they do not rank providers by sponsorship. A submitted brief is reviewed by VPPdirectory before any permitted introduction. Payment or submission does not guarantee an introduction, provider response or customer outcome.

Contribute an operator or utility perspective

We welcome factual corrections and firsthand deployment details from utility teams, operators and equipment specialists. Tell us your role, the program and reporting period, the measurement boundary, and which supporting records can be cited publicly. Specify whether your comments may be attributed to you and your organization. We verify identity and permission before publishing an attributed comment; supplying a comment does not purchase placement or certify a provider.

Contact the editor about a contribution

What is a Virtual Power Plant?

A Virtual Power Plant (VPP) is a coordinated network of distributed energy resources — home batteries, smart thermostats, EVs, solar systems, flexible C&I loads, and more — coordinated to reduce or shift electricity demand, store energy or export power under a utility or market program. A VPP does not require every device to export electricity. Its grid value depends on the program, location and measured performance.

Who VPPdirectory is for

Utility planners, ISO market staff, data center and AI infrastructure developers, regulatory teams, DER aggregators, investors, and journalists can use VPPdirectory for fast, structured intelligence on the rapidly growing flexibility market.

Methodology: how listings are reviewed

Listings are compiled and updated regularly from a combination of public sources, including:

Department of Energy (DOE) reports and program disclosures
FERC and ISO/RTO filings (PJM, ERCOT, CAISO, NYISO, ISO-NE, MISO, SPP)
State PUC dockets and utility tariffs
Company disclosures, investor reports, and press releases
Provider websites and direct submissions

Data confidence labels

Verified: supporting documentation has been reviewed for a core claim. This legacy profile label does not verify every field; use the separate capacity, status, territory and market evidence and their dates.
Source-linked: the listing is compiled from public sources or provider materials, but individual figures should still be confirmed before procurement.
Needs review: useful for discovery, but not ready for market analysis without additional source checks.
Provider-submitted: submitted by a provider and pending editorial review.

Capacity fields are labeled by their underlying basis because providers report capacity in different ways: portfolio, enrolled, forecast, contracted, deliverable, or program-level MW. Treat the number as a discovery signal, then confirm deliverable MW directly.

Update policy

We refresh the directory regularly. Each listing carries a lifecycle status, a data-confidence label, a last-reviewed date, and source links. Providers can claim and update their listings; significant changes are reviewed before publication.

Corrections

Spot something wrong? Send the program name, the field that needs updating, and the best primary source to jared@clauffice.com. Corrections to capacity, markets, program status, and service territory are prioritized.

A note on accuracy

Capacity, asset counts, and program details change frequently. Information is provided for reference only and should not be treated as a substitute for primary sources or direct conversation with the provider. We welcome corrections at jared@clauffice.com.

Frequently asked questions

What is a Virtual Power Plant?

A Virtual Power Plant (VPP) is a coordinated network of distributed energy resources — home batteries, smart thermostats, EVs, solar systems, and flexible C&I loads — coordinated to reduce or shift electricity demand, store energy or export power under a utility or market program.

Who is VPPdirectory for?

Utility planners, ISO market staff, data center and AI infrastructure developers, regulatory teams, DER aggregators, investors, and journalists tracking the U.S. flexibility market.

Where does VPPdirectory data come from?

Listings are compiled from DOE reports, FERC and ISO/RTO filings, state PUC dockets, utility tariffs, company disclosures, provider websites, and direct submissions.

How often is the directory updated?

We refresh listings regularly. Each entry carries an operating status, a data-confidence label, a last-reviewed date, and source links.

Browse the directory List your VPP

A public-beta directory of flexible capacity in U.S. power markets

Publisher and editorial contact

Commercial relationships and editorial scope

Contribute an operator or utility perspective

What is a Virtual Power Plant?

Who VPPdirectory is for

Methodology: how listings are reviewed

Data confidence labels

Update policy

Corrections

A note on accuracy

Frequently asked questions

What is a Virtual Power Plant?

Who is VPPdirectory for?

Where does VPPdirectory data come from?

How often is the directory updated?

VPPs and flexibility providers