ISO New England
ISO New England Inc. is the independent, nonprofit regional transmission organization authorized by the Federal Energy Regulatory Commission to operate the high-voltage power system, administer the wholesale electricity markets, and plan the power system for Connecticut, Rhode Island, Massachusetts, Vermont, New Hampshire, and most of Maine. Home market is the United States. It sits at the wholesale layer of the value chain, between generators, transmission owners, interconnections with New York and Canada, and the load-serving entities that resell power to retail customers - and it states on its own site that handling retail electricity is something it does not do. Its API posture is the sector's classic split, read from the wholesale end. Market and system data is genuinely open, so open that the ISO Express portal serves full nodal day-ahead LMP files as anonymous CSV and the public dashboards are backed by an anonymous JSON feed. Consumer data does not exist here at all, and cannot, because ISO New England holds no retail customer relationships and no Green Button, ESPI, or consumer data-portability mandate reaches it. The one documented programmatic contract, the Web Services API v1.1, is a real, richly documented RESTful surface of 477 path templates across 90 market and operations resources, but it answers 401 to anonymous callers - a developer must first create a free, self-serve ISO Express account, which the ISO says automatically grants access to the data feeds, and then authenticate with HTTP Basic over SSL.
ISO New England is tracked in the API Evangelist network. This page is the human-readable profile that sits on top of the machine-readable index we maintain at apis.io.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
ISO New England is in the network as a tracked entity. We haven't yet indexed a public API surface for it — when one is published, the artifacts, score, and agent-readiness read will appear here automatically. The source repository is where that profile is built.
← All providers · Data indexed from github.com/api-evangelist/iso-new-england · machine-readable index on apis.io