ERCOT · Pricing

SCED system lambda

The system-wide marginal energy price from every SCED run — one number for what energy is worth in ERCOT right now. Collected from ERCOT MIS (NP6-322).

ercot-sced-lambdaevery 5 min · 5m rows1 entity

What is in it

Updates: every 5 min · 5m rows
Entities: 1 entity
Source: ERCOT MIS · NP6-322-CD
Source timezone: US Central — every timestamp Dryos serves is UTC
Coverage: 29 August 2026 to now
Rows held: 5,271
Primary key: iso, market, interval_start_utc

What it measures

Every value, its unit, and what the source means by it.

System lambda$/MWh
Capped system-wide marginal energy price.
system_lambda

Columns

Exactly what a request answers with, read from the API rather than written here.

Column	Type	Description
interval_start_utcrequired	timestamp	Start of the interval, UTC. Always UTC — ERCOT publishes wall-clock Central with a repeated-hour flag, which is resolved on ingest.e.g. 2026-08-29T14:15:00Z
isorequired	string	Publishing ISO.e.g. ERCOT
marketrequired	string	Market the lambda cleared in: RTM (SCED) or DAM.e.g. RTM
system_lambdarequired	number	System-wide marginal energy price, $/MWh. For the real-time report this is the capped value — the one settlement uses.e.g. 15.60
system_lambda_uncapped	number	The uncapped system lambda, $/MWh.e.g. 15.60
source_published_at_utcrequired	timestamp	When ERCOT posted the document this row came from, UTC. For reports republished on a rolling window this is the vintage: the same interval appears once per publication, and the newest is the current view.e.g. 2026-08-29T14:17:01Z
collected_at_utcrequired	timestamp	When Dryos collected this row, UTC. Stamped by the platform, not the collector.e.g. 2026-08-29T14:18:02Z

Read it

Public, read-only, no key and no sign-up. Relative times stay relative, so a URL keeps working.

The newest rows

shell

curl "https://api.dryos.ai/v1/datasets/ercot-sced-lambda/query?limit=12"

The catalogue entry — every column, its type and the source

shell

curl "https://api.dryos.ai/v1/datasets/ercot-sced-lambda"

Full parameters — bucketing, aggregation, filters and search — are on the API reference.

Ask an agent

The same stream through the Model Context Protocol, so Claude, ChatGPT, Cursor or any MCP client can query it directly.

shell

claude mcp add --transport http dryos https://api.dryos.ai/mcp

Then ask:

Show me System lambda on SCED system lambda over the last 24 hours.

Setup for every client is on the MCP server page.

How this stream is checked

Pulled straight from ERCOT MIS · NP6-322-CD — no reseller in between — and compared against that file before it is served.
Null means the source did not report it — never zero.
A reading lands every 5 min; the interval timestamp is the start of the interval, in UTC.
ERCOT settles and publishes on US Central time. Every timestamp Dryos serves is UTC.

What is in it

What it measures

Columns

Read it

Ask an agent

How this stream is checked

Related streams