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ERCOT / PUCT · Live CAISO · Live PJM · Beta FERC · Layer

Track the regulatory record behind battery storage.

Battery storage is the fastest-growing resource on the US grid — and since FERC's landmark Order 841 (2018) opened wholesale markets to storage, ERCOT and CAISO have led its deployment. But whether a BESS project pencils out is decided in the regulatory record: the FERC orders, ISO market rules, capacity-accreditation methods, and interconnection dockets that determine how storage is dispatched, paid, and connected. NodalPulse tracks that record across ERCOT, CAISO, PJM and FERC — deadlines and party positions extracted, threaded, and cited to the filing.

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A battery's revenue is written in the rules.

FERC Order 841 · 2018 Opened RTO/ISO energy, capacity, and ancillary-services markets to storage. Still generating compliance filings and disputes.
FERC Order 2222 · 2020 Enabled distributed-energy aggregations — including batteries — to participate in wholesale markets, ISO by ISO.
ERCOT RTC Real-Time Co-optimization reshapes how batteries are dispatched and paid for reserves — where much of ERCOT storage revenue lives.
Capacity accreditation · ELCC Duration-based accreditation can credit a 4-hour battery for a fraction of its nameplate MW — and the method keeps changing in dockets.

Every one of these carries comment windows and effective dates buried inside the filings. Miss one and your project's revenue assumptions change without you in the room.

What NodalPulse tracks for storage

ISO market-design & dispatch rules.

ERCOT (incl. Real-Time Co-optimization), CAISO and PJM protocol revisions that change how storage is dispatched and paid for energy and ancillary services — with the deadlines and party positions surfaced.

Capacity accreditation (ELCC).

The accreditation dockets that decide how much a battery counts toward capacity — and therefore how much capacity revenue it earns — tracked as they evolve, especially in PJM.

FERC storage orders & compliance.

Order 841 and Order 2222 compliance proceedings and the disputes around them, threaded to the ISO filings that implement them — so a federal change and its market-level effect read as one story.

Interconnection-reform dockets.

Proceedings like FERC Order 2023 and the ISO interconnection-process revisions that reshape how — and how fast — storage projects reach the grid. We track the rules and dockets, not a project-by-project queue database.

One battery. Federal rules, ISO markets, and a queue.

A storage project's return depends on a FERC order, an ISO's dispatch and accreditation rules, and an interconnection proceeding — decided in separate venues, in dockets with no shared ID. Tracking them apart means you learn about a capacity-accreditation change or an ancillary-services revision after it's already priced into someone else's model.

NodalPulse threads the legs into one living Record page per matter, with the deadline, the parties, and the citation back to the filing — so the record reads as one story.

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Battery storage regulation: common questions

How is battery storage (BESS) regulated in US power markets?
Storage sits at the intersection of federal and market rules. FERC sets the wholesale-market participation framework — Order 841 (2018) required RTOs/ISOs to open their energy, capacity, and ancillary-services markets to storage, and Order 2222 (2020) extended participation to distributed-energy aggregations that include batteries. On top of that, each ISO (ERCOT, CAISO, PJM) sets how storage is dispatched, accredited for capacity, and interconnected. A single BESS project's economics depend on all of these at once.
What are FERC Order 841 and Order 2222?
Order 841 (2018) is FERC's landmark rule directing each RTO/ISO to remove barriers to electric storage participation in the wholesale energy, capacity, and ancillary-services markets. Order 2222 (2020) requires RTOs/ISOs to allow distributed energy resource aggregations — which can include behind-the-meter and small-scale storage — to participate in those markets. Both continue to generate compliance filings and disputes at FERC and in each ISO's stakeholder process.
How does ERCOT Real-Time Co-optimization affect batteries?
ERCOT's Real-Time Co-optimization (RTC) co-optimizes energy and ancillary services in the same real-time dispatch — a structural change that reshapes how batteries are dispatched and paid for reserves. Because so much of a battery's revenue in ERCOT comes from ancillary services, RTC and its associated protocol revisions materially affect storage economics, and they move through ERCOT's stakeholder process with hard implementation deadlines.
What is capacity accreditation (ELCC) for storage?
Capacity accreditation determines how much a resource counts toward reliability requirements. Many markets use an Effective Load Carrying Capability (ELCC) method that discounts a battery's nameplate MW based on its duration and marginal reliability contribution — so a 4-hour battery may be credited for far less than its rated capacity. PJM and other markets continually revise these methods in dockets, and the outcome directly affects a storage project's capacity revenue.
How do I track battery storage (BESS) dockets and interconnection rules?
NodalPulse tracks the regulatory record behind storage — the FERC orders and compliance proceedings, ERCOT/CAISO/PJM market-design and capacity-accreditation dockets, and interconnection-reform proceedings (e.g. FERC Order 2023) that govern how storage connects and gets paid — extracting the deadlines and party positions, threaded across jurisdictions and cited to the filing. Start a free 14-day trial (no card) to track the matters that affect your projects.

Track the rules that price your batteries.

ERCOT and California live · PJM in Beta · FERC layer threaded in. Start free — no card.

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