EnCompass Power Market Simulation Software

Make long-term power system and market decisions with confidence using EnCompass™, an integrated planning and power market simulation software platform built to support integrated resource planning and integrated systems planning. EnCompass brings together capacity expansion, production cost modeling, and zonal and nodal power flow modeling in a single system to reduce uncertainty and reveal the real operational and economic impacts of decisions before you make them.

By unifying market dynamics, transmission constraints, resource behavior, and policy assumptions through transparent, North America–focused modeling, EnCompass replaces fragmented workflows with defensible insight that supports smarter investment, planning, and development decisions. This solution is available via desktop, server, or cloud deployment to support modern, scalable planning workflows.

“The EnCompass model serves as the cornerstone of our analytical process. It allows us to navigate and make sense of a market that’s evolving at extraordinary speed, helping us to anticipate changes and identify opportunities. This powerful visualization tool transforms the nodal results into actionable insights, supporting our developers to make strategic decisions in greenfield site selections.”

Arebise (Xiaogeng) Deng, Senior Fundamental Analyst, Linea Energy

"We used to spend several man-hours in data processing time to extrapolate and manage data. Now our analysts can spend time doing more critical tasks.”

ACES

“Enhanced flexibility in modeling coal units, solar-battery hybrid resources, and emissions gave us a more sophisticated IRP model.”

Senior Engineer, Generation Optimization, Large IOU

End-to-end Power Planning in One Integrated Platform

Plan with One Source of Truth.
Eliminate handoffs across transmission and generation planning by working in a single, intuitive power market simulation platform that unifies capacity expansion and production cost modeling with consistent, validated zonal and nodal data delivered in partnership with Horizons Energy. Data is refreshed twice per year, with shared assumptions and results that are easy to access and share across teams.

Reduce Congestion and Deliverability Risk.
Understand how transmission constraints, power flow modeling, and market outcomes interact to surface real-world congestion analysis, curtailment exposure, and generation siting risks before they impact asset performance or portfolio value.

Optimize Portfolios with Operational Realism.
Evaluate portfolio optimization, fuel analysis, and emissions and environmental compliance using single-pass co-optimization of energy, capacity, and ancillary services. This includes nodal portfolio optimization, allowing you to apply nodal pricing (using stored interval bus prices or calculated shift factors) for portfolio runs. The platform provides detailed modeling of storage, hybrids, outages, and policy constraints that reflect real system behavior. It also features the demand: data center technology type, which models data centers as dispatchable loads that only incur demand when market prices are below a specific threshold.

Defend Decisions with Transparent Results.
Produce auditable, reviewable outputs that support regulatory filings, IRP and ISP submissions, asset valuation, and long-term investment decisions, with transparent logic designed to reflect North American market rules, policy changes, and regulatory requirements.

Eliminate Version Drift, Manual Reconciliation, and Stitched Results

Access Power Prices by Node, Plus Portfolio Management Tools.

Eliminate version drift, manual reconciliation, and stitched results across planning studies. EnCompass brings together power market simulation, production cost modeling, capacity expansion, and power flow analysis in a single platform with one shared data foundation, reducing setup time and accelerating insight across transmission and generation planning workflows. Product updates and enhancements are driven by North American market evolution, policy changes, and client-driven regulatory needs.

Model Emerging Technologies with Operational Realism

Simulate the Systems Planners Manage Today and Tomorrow.

EnCompass models storage, hybrids, demand response, fuel constraints, carbon caps, and accreditation rules such as ELCC with detailed operational constraints and flexible time resolution. Recent enhancements deepen cascading hydro and fuel logistics, modeling water flows between generators via tail storage and spill delivery points. Expanded fuel modeling separates delivery points from fuels, enabling dynamic addition of firm contracts and storage to projects and supporting emissions and environmental compliance without external tools.

Capture Real Interactions Between Congestion, Reserves, and Prices

Avoid Overstating Value or Understating Risk in Planning and Valuation.

With single-pass co-optimization of energy, capacity, and ancillary services, EnCompass captures the interaction between congestion analysis, reserves, and price formation, producing more accurate zonal and LMP price forecasting, curtailment outcomes, and asset valuation than multi-pass or heuristic engines.

Analyze Grid Constraints Visually and at Full Resolution

Understand Why Results Occur, Not Just What Happened.

Embedded power-flow modeling and grid visualization help identify binding constraints, congestion drivers, and deliverability impacts directly within the market simulation. The Constraint Analyzer enhances this capability with improved visualization, filtering by area, identification of equivalent constraints, and use of the largest dispatchable shift factor to pinpoint resources driving bottlenecks. The enhanced Constraint Maker supports more complex limits, including MISO Regional Directional Transfer, by incorporating BA interchange flows for more accurate grid analysis.

Run Sub-Hourly Scenarios With Confidence and Speed

Reveal Volatility and Operational Limits That Hourly Models Miss.

EnCompass supports time steps from annual to one minute, enabling analysis of ramps, reserves, fuel optimization, and short-duration storage in high-variability systems. Advanced Commitment vs. Dispatch uncertainty modeling applies different assumptions for day-ahead and real-time phases, more accurately reflecting market operations.

What Clients Are Saying

Frequently Asked Questions about EnCompass

Who is EnCompass designed for?

EnCompass is designed for organizations and teams responsible for long-term power system planning, market analysis, and infrastructure investment decisions.

Utilities use EnCompass to support integrated resource planning, capacity expansion, and fuel and emissions analysis, while also understanding how transmission constraints, congestion, and deliverability affect portfolio outcomes. Because zonal and nodal simulations live in one platform, planning teams can move beyond siloed IRP and transmission studies toward a more integrated system planning approach.

Transmission planners rely on EnCompass to evaluate congestion drivers, test transmission expansion options, and assess how new generation, retirements, or large load additions impact flows, reliability, and costs across the grid.

Developers, IPPs, and investors use EnCompass to evaluate generation and storage projects, assess basis and curtailment risk, identify binding constraints, and test sensitivities related to transmission upgrades, load growth, and policy changes. Nodal price formation and powerflow insights help inform siting, valuation, and acquisition decisions.

EnCompass is also widely used by consultants, cooperatives, regulators, and market participants who need a defensible, transparent modeling framework that supports scenario analysis, regulatory filings, and stakeholder review.

In short, any organization that needs to understand how generation, transmission, markets, and policy interact over time can benefit from EnCompass, especially those looking to replace disconnected tools with a single, integrated planning platform.

What capabilities does EnCompass have?

EnCompass is an integrated power market simulation and planning platform that combines zonal capacity expansion, production cost modeling, and nodal power flow modeling in a single system. It supports integrated resource planning and integrated systems planning through long-term portfolio optimization, fuel and emissions analysis, congestion and deliverability assessment, and zonal and LMP price forecasting across multi-decade planning horizons.

What algorithm does EnCompass use?

EnCompass uses a security-constrained unit commit (SCUC) and security-constrained economic dispatch (SCED) to determine the least-cost solution to meet energy demand. SCUC determines when generators will be on or offline, while SCED determines how much energy is dispatched from online or available resources.

Can EnCompass run zonal and nodal analysis?

Yes, our power market simulation software conducts zonal and nodal analysis.

Can EnCompass perform sub-hourly analysis?

Yes, EnCompass can produce results on an hourly and sub-hourly basis.

Does EnCompass come with data, or do I use my data?

EnCompass is delivered with data while some of our clients use their data. Our data includes the National Database (NDB) which contains generation, load, fuel, emissions, and cost data for 78 zones across North America. Our data team overlays a power-flow case on the zonal NDB to create our nodal datasets, which are available for the Eastern, Western, and ERCOT Interconnections.

Is EnCompass delivered on premise or in the cloud?

EnCompass is available as both an on-premise deployment and a fully managed cloud solution. Organizations can choose the deployment model that best aligns with their IT, security, and scalability requirements. The cloud option removes the need for hardware procurement and ongoing infrastructure management while enabling faster scaling and easier collaboration. Meanwhile, on-premise deployment provides full control for teams with internal infrastructure standards.

How does Horizons Energy data support EnCompass?

EnCompass is delivered with high-quality zonal and nodal datasets built in partnership with Horizons Energy. Horizons’ National Database provides a consistent foundation for generation, load, fuel, emissions, and market data across North America, which is integrated into EnCompass for long-term planning and power market simulation. These datasets are validated, benchmarked, and refreshed twice per year, helping ensure results remain accurate, consistent, and defensible across markets and planning horizons.

One Integrated Platform for Power Market Simulation