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Dynamic line rating goes live at full scale on New York transmission lines

Dynamic line rating goes live at full scale on New York transmission lines

New Capabilities

Sensors on four 115kV lines in western New York let operators use real-time capacity, cutting wind curtailments by 350 megawatts

Today: DLR at full operational scale on western New York corridor

Overview

Updated 1 hour ago

Transmission lines have long been operated at static ratings based on worst-case weather assumptions. In western New York, that just changed: National Grid and LineVision have deployed dynamic line rating (DLR) sensors on four 115-kilovolt lines, feeding real-time capacity data directly to grid operators.

The sensors measure actual line sag and weather conditions, so lines can carry more power when conditions allow. National Grid expects average capacity increases of 20-30% per line, cutting wind curtailments by more than 350 megawatts and adding 190 megawatts of average corridor capacity.

Why it matters

If DLR spreads, utilities can add renewable capacity to existing lines in months instead of waiting five-plus years for new transmission.

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Key Indicators

350+ MW
Wind curtailment reduction
Expected reduction in wind power curtailed along the corridor from DLR and circuit rebuilds.
190 MW
Average corridor capacity increase
Expected average capacity gain across the western New York corridor.
20-30%
Average line capacity increase
Expected capacity gain per line from DLR, per National Grid estimates.
4
Transmission lines equipped
Four 115kV lines in upstate New York with LineVision DLR sensors.

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People Involved

Organizations Involved

Timeline

2022 October 2026

5 events Latest: Today
Tap a bar to jump to that date
  1. DLR at full operational scale on western New York corridor

    Today Milestone

    National Grid and LineVision confirm DLR at full operational scale on the western New York corridor, a first for the United States.

  2. LineVision DLR fully integrated into National Grid operations

    Milestone

    The DLR system was integrated into National Grid's transmission control room, marking the largest operationalization of DLR in the US.

  3. DLR deployment becomes operational

    Deployment

    The DLR system began operating on the western New York lines, following a year of pilots with National Grid.

  4. National Grid and LineVision announce largest US DLR project

    Announcement

    The companies announced DLR sensors on four 115kV lines in western New York, the first real-time DLR operation in the state.

  5. Sensors installed on four 115kV lines in upstate New York

    Deployment

    LineVision's LineRate DLR sensors were installed on transmission lines serving the Cassadaga and Arkwright Summit wind projects.

Scenarios

1

National Grid expands DLR to Massachusetts and UK

Likely Resolves by End of 2027

Discussed by: Latitude Media, National Grid executives

National Grid has said it is considering similar DLR deployments in Massachusetts and its UK operations. The company has data from the Syracuse deployment and expects future deployments to require less effort, since the integration playbook is now established.

2

New York utilities adopt DLR systemwide

Possible Resolves by End of 2028

Discussed by: New York Public Service Commission, Canary Media

New York's Public Service Commission has required utilities to consider DLR as part of grid plans to meet the state's 70% renewable by 2030 goal. The National Grid deployment could serve as a template for other utilities in the state.

3

DLR capacity gains fall short of projections

Unlikely Resolves by End of 2027

Discussed by: Latitude Media, grid operations analysts

The 20-30% capacity increases are projections based on pilot data. If real-world operations show smaller gains, utilities may be slower to adopt DLR. The operational challenge of training control room operators on new data also affects adoption speed.

Historical Context

2 moments from history that rhyme with this story — and how they unfolded.

2003-2010

Phasor measurement unit deployment (2003-2010)

After the 2003 Northeast blackout, utilities deployed phasor measurement units (PMUs) to get real-time visibility into grid conditions. The sensors measure voltage and current at high speed, giving operators a live picture of grid stability.

Then

Utilities gained real-time situational awareness that helped prevent cascading failures.

Now

PMUs became a standard grid monitoring tool, laying the foundation for modern grid operations.

Why this matters now

Like PMUs, DLR is a sensor technology that gives grid operators real-time data to operate lines more efficiently, without building new infrastructure.

2009-2015

Smart grid stimulus investments (2009)

The American Recovery and Reinvestment Act allocated billions for smart grid technologies, including advanced sensors, smart meters, and grid automation. Utilities used the funding to modernize aging infrastructure.

Then

Utilities deployed millions of smart meters and grid sensors across the US.

Now

The investments built the data infrastructure that enables technologies like DLR to work.

Why this matters now

The smart grid buildout created the data pipelines and control room systems that make DLR integration feasible today.

Sources

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