In the fall of 2024, the team reassessed how generation forecasts were supporting their day-ahead (DA) market decisions as market conditions and operational complexity continued to increase. As they began evaluating alternative forecasting solutions, two requirements stood out: dependable forecast accuracy and seamless integration into established day-ahead scheduling workflows.
For the schedulers responsible for day-ahead energy scheduling, reliable day-ahead generation forecasts are the key to managing Terra-Gen’s exposure and optimizing revenue outcomes. Given the scale of energy under management, even relatively small market price fluctuations can translate into meaningful financial impact, making forecast confidence a key input to effective risk management.
In parallel, the team also faced challenges related to data accessibility and usability. Daily workflows relied heavily on manual data downloads, spreadsheets, and incomplete data visualizations, which limited efficiency and made it difficult to maintain a clear, consolidated view of available information. Instead of focusing on broader grid trends and long-term planning considerations, time was often absorbed by recurring data preparation and validation tasks.
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With Amperon’s Asset Solar Short-Term Forecasts, Terra-Gen’s scheduling team gained access to reliable, easy-to-use forecasts designed specifically to support day-ahead decision-making. Custom day-ahead solar generation forecasts, complete with 15-minute generation intervals, are delivered in a format that aligns directly with the team’s operational workflows, enabling more decisive and timely bids. Amperon’s UI, designed specifically for energy professionals managing market risk, lets the team visualize and compare their data layers: the Amperon forecast, historic actuals, and the ISO generation forecast. Features include built-in MAPE and cnMAE analysis and peak hour identification. For deeper analysis, the CSV export function is convenient: it’s well-formatted and loads quickly.
Seeing this, the Terra-Gen team also took advantage of Amperon’s risk-free trial for the Grid Short-Term Forecast, which they can access through the same user interface that they use for their asset forecasts.This two-week forecast provides additional context into energy prices, informing bidding decisions. It also enables the team to schedule maintenance outages, easily identifying specific windows that meet generation and volatility requirements so that the O&M team can get their work done efficiently without impacting market operations.
"The Amperon UI saves me at least 15 to 20 minutes everyday. All the data layers I need are easy to find, and the platform loads fast." ― Energy Scheduler, Terra-Gen
With Amperon’s Asset Solar and Grid Short-Term Forecasts now in place, Terra-Gen operates with greater confidence in the inputs driving both bidding and maintenance decisions. The team can access asset generation and grid demand forecasts from multiple sources through a single platform,improving transparency and usability across workflows. Maintenance activities are scheduled with minimal operational disruption so that the assets are always running at their full potential.
"Amperon has significantly reduced our peak-hour forecast error (cnMAE)."
Terra-Gen is a leading independent renewable energy producer in the United States, specializing in developing, financing, and operating utility-scale wind, solar, and battery energy storage projects. They focus on clean energy, managing over 3.7 GW of wind and 1.3 GW of solar/storage, aimed at grid resiliency
The team has significantly reduced reliance on manual spreadsheets, freeing up time to focus on higher-value analysis and to strategize around system-wide changes. “We all knew the grid was going to change, but certain changes have come more quickly than expected,” says one energy scheduler. Extreme weather caused a fair amount of challenges when the team still relied on the data spreadsheets workflow. But the storms in November 2025 didn’t make them flinch. As grid conditions and weather patterns have grown more dynamic, having multiple forecasts available side-by-side has supported a more measured and resilient approach to decision-making. By benchmarking different forecast perspectives within one platform, the team is able to take more conservative positions during periods of uncertainty. That translates directly into lower balancing costs and predictable revenue outcomes, even during periods of extreme weather volatility.
The team makes big decisions all day, every day with inputs that are accessible, intuitive, and trusted -thanks to Amperon’s cutting-edge forecasting tools and analytics.
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