For Utility-Scale Developers & IPPs
(1) Ensure Compliant HSL/RTPP Telemetry
HSL/RTPP accuracy is now a compliance requirement in high PV growth regions like ERCOT and Georgia Power. Traditional methods fall short, creating risk.
Inverter-Level Accuracy
✔ Calculate HSL in real time at every inverter
✔ Captures effects of variable cloud shading
regardless of curtailment status
No New Hardware Required
✔ Works with existing SCADA and Plant Controls
✔ Seamless integration provides immediate value
(2) Unlock Actionable Insights
Turn high accuracy HSL telemetry into operational value with clear, accurate analytics.
Precisely Quantify Curtailment
✔ Measure curtailed energy with confidence
✔ Support financial reporting and settlement validation
✔ Inform capital decisions with clear curtailment insights
Back Validate Forecasts
✔ Strengthen confidence in operational and market decisions
✔ Compare forecasted vs. actual generation potential with
high accuracy
For Utilities and Grid Operators
Integrate PV Assets with Frequency Regulation
Enable solar to participate directly in frequency regulation by integrating PV onto AGC. This provides fast, inverter-level response that strengthens grid stability while reducing dependence on conventional generators.

Provide Synchronous Reserves with PV
Leverage solar headroom to provide synchronous reserves traditionally met by thermal assets. Meet evolving market requirements like PJM’s 2026 reserve obligations while improving overall system flexibility and reducing costs.
Drive Down System Operating Cost
Reduce reliance on fossil fuel peaker plants by using PV headroom as a flexible resource. Unlock more value from existing solar fleets and optimize battery investments by reserving storage for when it matters most.
Explore how Latimer Controls compares to alternative solutions
For real-time solar HSL calculation and curtailment response
This interactive graph shows real plant behavior during a partially cloudy day at a site in Hawaii. Each line represents a key metric, helping you understand the difference between operations with and without Latimer Controls installed on-site.
How to interact with this demo
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Click legend items to toggle data on and off. The graph starts by showing HSL accuracy, but you can also compare curtailment response.
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Zoom in by clicking and dragging. Double-click to zoom back out to the full day.
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Hover over lines to view exact values at each timestamp.
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Notice how the dark blue “Latimer HSL” line closely follows the blue-shaded “True HSL” area throughout the day—especially during periods of cloud cover. In contrast, the orange “Single Irradiance Meter HSL” often over- or under-estimates available power.
By the numbers
17.9%
<1%
HSL Error Using Latimer FSMS
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