Fractal Model

Release Notes

The Fractal Model is updated every quarter. See what's new in each release, from new market data to new modeling features.

Schedule a DemoFractal Model Overview

Latest Release

Fractal Model Version 26.9

Released September 2026.

▶Video Coming SoonFractal Model Version 26.9 walkthrough

What's New

  • New State Program TemplatesA NY VDER template with DLM.
  • Sensitivity AnalysisA new sensitivity analysis feature for the Fractal Model Add-in.

Previous Releases

Select a release to see what changed.

26.6June 2026New State Program Templates, FEOC-Compliant CAPEX Update, Python Sensitivity Analysis V2
  • New State Program TemplatesA Massachusetts Clean Peak Standard (CPS) template for the 83E RFP.
  • FEOC-Compliant CAPEX UpdateAn updated CAPEX benchmark for FEOC-compliant BESS equipment.
  • Python Sensitivity Analysis V2An advanced version for flexible scenario design and sensitivity analysis.
▶Video Coming SoonFractal Model Version 26.6 walkthrough
26.3March 2026Updated State Program Templates, Advanced Aux Load Analysis, Python-Based Sensitivity Analysis
  • Updated State Program TemplatesEnhanced support for NY VDER, MA SMART and CPS, and the CT Energy Storage Program.
  • Advanced Aux Load AnalysisAmbient weather-based modeling for precise auxiliary load calculations.
  • Python-Based Sensitivity AnalysisA new module for portfolio-level modeling and deeper sensitivity analysis.
25.12December 2025Dynamic Ancillary Services, Fractal Model API, Coincident Peak Discharge
  • Dynamic Ancillary ServicesSet the discharge or charge direction for reserves, and set a custom throughput price for all ancillary services.
  • Fractal Model APIA Python API to run the Fractal Model, and run tens of models in parallel.
  • Coincident Peak DischargeDynamic continuous and discrete hour ranges for coincident peak (CP) windows.
25.9September 2025CAPEX and Supply Chain Update, Expanded Hybrid and Gas Generation Model, Training Library
  • CAPEX and Supply Chain UpdateCapital cost and supply chain calculations reflecting the BESS market in Q3 2025.
  • Expanded Hybrid and Gas Generation ModelHybrid model features with detailed gas and PV efficiency inputs.
  • Training LibraryVideo walkthroughs of the latest models and templates at app.fractalmodel.com.
25.6June 2025Custom Benchmarks and Trading Inputs, Expanded Gas Model, Custom 40-Year Profiles
  • Custom Benchmarks and Trading InputsCustom TB benchmarks, trading horizon and variable O&M.
  • Expanded Gas ModelGas generation modeling with heat rate settings.
  • Custom 40-Year ProfilesCustom 40-year generation and curtailment profiles.
25.3March 2025Long-Term Forecasts in the Add-in, Gas Generator Modeling, Cost Benchmarks
  • Long-Term Forecasts in the Add-inFractal long-term price forecasts for ERCOT and CAISO, built into the Fractal Model Add-in.
  • Gas Generator ModelingModel gas generation alongside Fractal solar, wind and BESS models.
  • Cost BenchmarksUpdated BESS CAPEX and OPEX benchmarks.
24.12December 2024Fractal Energy Expands to CAISO, Advanced Tax Equity Model, Updated Pricing Intelligence
  • Fractal Energy Expands to CAISOThe Fractal Energy portal now provides historical CAISO data.
  • Advanced Tax Equity ModelFinancial analysis features to optimize the tax equity structure of your projects.
  • Updated Pricing IntelligencePricing curves updated with real-world BESS capital and operating costs observed in competitive procurements.
24.9September 2024Fractal Energy Portal, New York and Massachusetts Templates, Cost Benchmarks
  • Fractal Energy PortalA new portal for downloading historical prices.
  • New York and Massachusetts TemplatesUpdated templates for the NY Index Storage Credit and the Massachusetts Clean Peak Standard.
  • Cost BenchmarksUpdated BESS CAPEX and OPEX benchmarks.
24.6June 2024Long-Term Forecasts, NY Index Storage Credit, Cost Benchmarks
  • Long-Term ForecastsFractal long-term price forecasts available within the Add-in.
  • NY Index Storage CreditPre-built Fractal Model templates for the NY ISC mechanism.
  • Cost BenchmarksUpdated BESS CAPEX and OPEX benchmarks.
24.3March 2024Historical Nodal Prices, Pre-Built Market Templates, Cost Benchmarks
  • Historical Nodal PricesImport historical nodal prices for ERCOT and CAISO.
  • Pre-Built Market TemplatesTemplates for all US markets and upcoming RFPs.
  • Cost BenchmarksUpdated BESS CAPEX and OPEX benchmarks.
23.12December 2023Fair Market Value in the Tax Equity Model, Advanced Dispatch Optimization, Historical Benchmarks (ERCOT)
  • Fair Market Value in the Tax Equity ModelA new input to step up the asset basis to fair market value in tax equity models.
  • Advanced Dispatch OptimizationMarket restrictions, market dilution and risk-adjusted trading rules.
  • Historical Benchmarks (ERCOT)Four years of historical energy and ancillary service prices to benchmark past performance.
23.9September 2023Hourly Dispatch Diligence, Availability Calculation, Battery Price Update
  • Hourly Dispatch DiligenceQuery hourly dispatch and revenue calculations.
  • Availability CalculationRun sensitivities on the impact of availability.
  • Battery Price UpdateBattery cost benchmarks updated with the latest market data.
23.6June 2023Automated Bidding, Market Price Statistics, Sizing Sensitivities, Peak Mitigation Reserve, Mapping Tools
  • Automated BiddingA new bidding algorithm that co-optimizes the day-ahead and real-time markets.
  • Market Price StatisticsA new tab that summarizes market prices with statistics.
  • Sizing SensitivitiesA new tab that runs sensitivities across multiple storage and solar sizes.
  • Peak Mitigation ReserveReserve hours for peak mitigation, then optimize the remaining hours for energy and ancillary services.
  • Mapping ToolsContinued enhancements to the project development mapping tools in the Fractal Portal.
23.3March 2023Fractal Map Revenue Calculation (Beta), Cost Benchmarks, Optimization Engine, Mapping Tools
  • Fractal Map Revenue Calculation (Beta)Compare revenue at multiple pricing nodes in Texas using historical prices.
  • Cost BenchmarksUpdated CAPEX and OPEX benchmarks.
  • Optimization EngineAn improved optimization engine.
  • Mapping ToolsContinued enhancements to the project development mapping tools in the Fractal Portal.
22.12December 2022Merchant Revenue, Dashboard and Calculations, Project Development Mapping
  • Merchant RevenueImproved merchant revenue calculation with 8760 prices for solar and wind.
  • Dashboard and CalculationsImproved dashboard reporting and calculation improvements across the model.
  • Project Development MappingA new mapping tool showing existing power plants, transmission lines and other key data.
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