For DER Aggregators

The aggregation stack for ISO-registered DER programs.

Nexwatt gives independent DER aggregators the technical infrastructure to onboard heterogeneous assets, model aggregated capacity, and participate in ISO wholesale markets.

Request a Technical Demo Platform Overview
API-First Infrastructure

API-first aggregation infrastructure

Nexwatt exposes a REST API for programmatic asset registration, portfolio modeling queries, and ISO dispatch event webhooks. Designed for DER aggregators who need to integrate aggregation data with their own operational systems.

Full API documentation available via pilot access. Supports OAuth 2.0 authentication, scoped access tokens, and signed webhook payloads for dispatch event delivery.

// POST /v1/assets/register
// Authorization: Bearer {token}
{
  "asset_id": "BTM-BESS-00441",
  "type": "battery_storage",
  "capacity_kw": 25.0,
  "energy_kwh": 50.0,
  "iso_zone": "NYISO-ZONE-J",
  "telemetry_endpoint": "https://..."
}
// 201 Created
{
  "status": "registered",
  "aggregation_id": "AGG-0094"
}
Multi-ISO Coverage

Multi-ISO support out of the box

Nexwatt handles the distinct telemetry, enrollment, and dispatch requirements of PJM, ISO-NE, and NYISO — so DER aggregators operating across multiple ISO zones manage a single platform, not three separate ISO integration workflows.

PJM

BRA/RPM capacity market. PEPCO, APS, BGE, and all PJM zones. ICAP qualification and settlement reporting.

ISO-NE

Forward Capacity Market. FERC Order 2222 compliance tariff. Real-time telemetry and dispatch testing workflows.

NYISO

ICAP market and DRIS registration. Downstate capacity zones supported. DER aggregation tariff provisions.

Platform Compliance

ISO compliance managed by the platform

Automated telemetry format conversion per ISO specification
DER aggregation registration documentation generation
Dispatch test scheduling and result documentation
Settlement data reconciliation and revenue attribution

Ready to streamline your ISO aggregation operations?

We'll walk through your current asset mix, target ISO zones, and integration requirements in a focused technical conversation.

Request a Technical Demo