Running ERCOT Telemetry from a Cloud-Hosted Geo SCADA System
Key Takeaway
A cloud-hosted Geo SCADA system can deliver ERCOT telemetry, but the architecture must guarantee continuous, low-latency, redundant data flow to the QSE and ERCOT. That means resilient connectivity, primary/standby redundancy across fault domains, edge buffering, and failover that restores telemetry within compliance windows — because an outage in a hosted system carries the same penalties as an on-premise one.
Quick Answer
A cloud-hosted Geo SCADA system can deliver ERCOT telemetry, but the architecture must guarantee continuous, low-latency, redundant data flow to your Qualified Scheduling Entity (QSE) and ERCOT. That requires resilient connectivity, primary/standby redundancy across independent fault domains, edge buffering at the source, and failover that restores telemetry within compliance windows. An outage in a hosted system carries the same financial and market-participation penalties as one in an on-premise system, so reliability is non-negotiable.
What ERCOT Telemetry Demands
ERCOT requires reliable, timely telemetry from registered load resources, generation, and demand-response participants, delivered within defined latency windows. The baseline requirements are covered in our articles on ERCOT telemetry support with Geo SCADA and ERCOT telemetry requirements for generation. Hosting the Geo SCADA server in the cloud does not relax any of these — it shifts where reliability must be engineered.
Connectivity Is the Critical Path
In a hosted model, telemetry travels from field assets to the cloud Geo SCADA server and onward to the QSE. Every hop must be resilient:
- Redundant paths from the site to the cloud (diverse VPN tunnels or a private circuit with backup), so a single link failure does not interrupt ERCOT data.
- Edge buffering so events queue at the RTU and backfill after any brief interruption.
- Low, predictable latency to stay within ERCOT's windows — favoring a private circuit over best-effort internet where timing is tight.
- Secure transport throughout, per securing hosted Geo SCADA.
Redundancy and Failover Within Compliance Windows
ERCOT telemetry failures should be treated as the highest-severity incidents. A hosted deployment must run primary and standby Geo SCADA servers in separate availability zones and prove, through drills, that telemetry to the QSE resumes within the compliance window after a failover — exactly the discipline in HA and DR for hosted Geo SCADA and backup and failover testing. Test the full path, not just the server: confirm the QSE actually receives data after switchover.
Data Quality Still Matters
Reliable delivery is necessary but not sufficient — ERCOT also expects accurate, non-stale values. Automated data-quality checks in the Geo SCADA scripting engine should flag frozen values, spikes, or calculation errors before they reach the QSE, regardless of where the server is hosted.
Who Carries the Risk
Independent Procurement Programs and other ERCOT market participants remain responsible for compliance even when the platform is hosted or managed — see managed SCADA for IPP ERCOT compliance. This makes the choice of hosting and support provider, and the SLAs around ERCOT-critical telemetry, a material decision. ERCOT-specific provisions belong in the SLA, as outlined in SLA best practices.
Getting Help
NFM Consulting designs and operates cloud-hosted Geo SCADA environments that meet ERCOT telemetry requirements — redundant connectivity, zone-separated failover, data-quality validation, and ERCOT-specific SLAs — through our managed Geo SCADA and telemetry support. Contact NFM Consulting to review ERCOT readiness for your hosted SCADA.
Frequently Asked Questions
Yes, provided the architecture guarantees continuous, low-latency, redundant data flow to your QSE and ERCOT. That means redundant connectivity from the field to the cloud, edge buffering, primary/standby redundancy across separate availability zones, and failover that restores telemetry within ERCOT's compliance windows. Hosting in the cloud does not relax ERCOT requirements; it changes where reliability must be engineered.
Telemetry must resume to the QSE within ERCOT's compliance window after a failover. A hosted deployment should run primary and standby servers in separate availability zones and prove through regular drills that the full path — not just the server — recovers in time, confirming the QSE actually receives data after switchover. ERCOT telemetry failures carry financial and market-participation penalties regardless of hosting model.
The market participant — for example an IPP or registered load resource — remains responsible for ERCOT compliance even when the platform is hosted or managed by a provider. This makes the choice of provider and the SLAs around ERCOT-critical telemetry a material decision, and ERCOT telemetry failures should be classified as the highest-severity incidents in the support agreement.