Energy Market Modeling & Simulation, Trusted for 25+ years

PLEXOS® is the energy modeling and simulation engine that utilities, system operators, IPPs, traders, developers, and consultants have relied on for their biggest energy decisions for over 25 years. It co-optimizes power, gas, water, and hydrogen across every time horizon, at the zonal and nodal level.

The future of PLEXOS®? It’s intelligent. PLEXOS® Intelligence is the next evolution of PLEXOS®, the energy decision platform, with AI at the core of every step. Describe what you need, and it prepares data, builds and edits models, runs simulations, and explains what drives the results, on your models and the PLEXOS® engine. Run more scenarios, get answers faster, and make decisions you can defend.

Renewable Integration

Since 2008, PLEXOS® has been used for increasingly ambitious renewable integration studies.

Investment Decisions

PLEXOS® supports high-renewable IRPs around the world and in many US states.

Storage Investment and Operations

PLEXOS® optimizes storage investment and operations across all time horizons.

Hydro and Pumped Storage Hydro

PLEXOS® models hydropower alongside wind, solar, batteries, and other resources in a single study.

Emissions, CCUS, Nuclear, and other technologies

PLEXOS® models emerging energy technologies and the market impact of energy policy.

Unlimited flexibility

Model Your Way

Configure PLEXOS® with a wide range of scenarios, customized constraints, conditional variables, physical elements, simulation horizons, simulation period durations, integration phases, and model resolution.

This data-driven flexibility creates a dynamic solving engine: it adapts to your data, producing the right balance of detail and performance while giving you scalability and full control over every variable, constraint, and setting.

PLEXOS® is also completely transparent. If you want to see how the solution delivered the results, all equations, objective functions, and constraints are open for you to review.

Run real-world studies for greater accuracy
Analyze hundreds of scenarios for richer insights
Co-optimize electricity, water, and gas systems
Simulate competitive behaviors
Calibrate your simulations to balance accuracy and speed
Demonstrate auditable results
Control every constraint in your modeling runs

A Uniquely Unified Approach to Energy

Discover Hidden Value with Co-optimized Energy Market Simulation

PLEXOS® helps you understand market variations across the entire energy landscape: power, gas, water, hydrogen, and carbon. Every commodity, covered.

Perform long-term planning, Projected Assessment of System Adequacy (PASA), and medium- and short-term scheduling, with each phase automatically connected to the others.

Create one source of truth for the entire organization
Maximize your profitability across multiple commodities
Reduce your IT costs and timelines
Make decisions based on real-world scenarios
Streamline your input/output processes and reduce errors
Work more efficiently across teams by eliminating iterative planning

Power

Represents every generating unit and transmission line in a given market and schedules the assets to meet system load at least cost.

Gas

Configure the complete electric topology, zonal or nodal, as well as the complete gas topology from the wellhead to the city gate.

Water

Assess emerging water constraints alongside energy retirements for asset development planning and operations.

Hydrogen

Model your hydrogen assets from generation, storage, transportation, and fuel blending to optimize your entire energy portfolio.

PLEXOS® Intelligence

Demand for analysis is outpacing what modeling teams can deliver. PLEXOS® Intelligence closes that gap, preparing data, building and editing models, running simulations, and explaining what drives the results, all on your own models and the PLEXOS® engine. You stay in control and approve every change, so answers are fast enough to act on and rigorous enough to defend.

Expertise where it counts: Hand off data updates and troubleshooting, and let recurring studies run on their own, so modelers and analysts spend their time on the work only they can do.
Better decisions across the business: Evaluate more options, and put results in front of planners, traders, and executives, who can ask questions and explore what-ifs, so answers arrive inside the decision window.
Results you can stand behind: Every result runs on the PLEXOS® engine, every change is validated before you run, and every step leaves an audit trail.

PLEXOS®Pulse

PLEXOS® Pulse delivers regularly refreshed forecasts across short-, medium-, and long-term horizons, all through an intuitive AI agent chat interface. Interrogate the model, explore “why,” and instantly generate bespoke analytics and visualizations, with no coding required. With zero setup and immediate integration, PLEXOS Pulse brings instant clarity to your trading and planning decisions.

AI-driven querying, analytics, and explanations: Build your bespoke analytics and visualizations leveraging our AI agent.
Holistic fundamental model: Fundamentally modeled from the ground up. Leveraging Energy Exemplar’s highly detailed dataset.
Horizon-matched refresh: Forecasts refresh on a cadence matched to each horizon, from daily short-term updates to monthly long-term updates, with millions of rows cleaned, scraped, and transformed so you can focus on decisions.
MCP access: Access forecasts from your AI tool of choice and feed the data into your other tools and systems.

PLEXOS® Playbooks

Prebuilt. Editable. Simulation-ready.

PLEXOS® Playbooks provide validated modeling templates with ready-to-run scenarios, detailed reports, and editable components, so teams can move faster, stay aligned, and reduce setup time. Ideal for accelerating planning cycles and compliance-driven studies.

Jump start the journey by:

Running an Integrated Resource Plan (IRP) using editable inputs and pre-built reports
Adjusting gas price forecasts quickly through intuitive scenario editing
Evaluating European price dynamics by layering in your own trading assumptions