PSEG
Public Service Enterprise Group (PSEG) is a diversified energy holding company headquartered in Newark, New Jersey. Its regulated utility subsidiary Public Service Electric and Gas (PSE&G) is New Jersey's largest electric and gas distribution utility, and PSEG Long Island operates the transmission and distribution system on behalf of the Long Island Power Authority. PSEG sits squarely in the utility-retailer tier of the United States energy value chain — it meters, bills, and serves end customers, and it sells generation into the PJM wholesale market rather than publishing that market's data itself. Its API posture is honestly closed. There is no developer portal: developer., developers., api., docs., and data.pseg.com do not resolve, and /developers, /api, and /docs on pseg.com return the site's soft-404 page. Green Button is present only as a file: PSEG Long Island's MySmartEnergy FAQ states customers can "download data information in CSV or Green Button (.XML) format," which is Download My Data behind a customer login, not Connect My Data. There is no documented programmatic third-party access to customer usage data — in the New Jersey BPU AMI docket PSE&G described manual secondary-user sharing, a Letter of Authorization with spreadsheets emailed back, and EDI for BPU-licensed suppliers. Grid data is equally closed: the PSE&G NJ and PSEG Long Island outage maps are vendor-hosted KUBRA StormCenter applications with no published data API. Open market data for this territory comes from PJM and the EIA, not from PSEG.
PSEG 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.
PSEG 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.
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