Smart optimization of
sustainable energy systems

LEC ENERsim models complex energy systems and optimizes them for costs, CO₂ and resilience — from early design to commercial operation.

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About LEC ENERsim

From early design to commercial operation

LEC ENERsim is a simulation platform for modern energy systems. Integrate any mix of energy sources, converters, storage units and consumers — then analyze performance, evaluate efficiency, and assess economic viability and environmental impact across every scenario.

  • Model multi-vector systems end to end
  • Optimize any scenario and operating strategy
  • Maximize flexibility and efficiency
Symbolic diagram of an interconnected multi-vector energy system: solar, battery, wind, EV charging, buildings, shipping, heat pump and clean power generation connected around a central optimization hub (AI-generated illustration)

Why ENERsim

Cost, emissions and security of supply

CO₂ prices, emission limits and outage scenarios are part of the same optimization as the costs.

Industrial complex with rooftop and ground-mounted solar panels, battery storage and a compact substation set in a green landscape, representing cost optimization (AI-generated illustration)
Economics
01 — Cost

Minimize total cost

LEC ENERsim finds the configuration and dispatch strategy that minimizes capital and operating costs across the system's entire lifetime.

Aerial view of a container port with a docked container ship, rooftop solar panels on a warehouse, fuel storage tanks and offshore wind turbines, representing low-carbon operation (AI-generated illustration)
Environmental
02 — CO₂-Reduction

Reduce emissions

Quantify and cut emissions by optimally sizing renewables, storage and converters around your real load profiles.

Power grid substation with solar panels, battery storage, backup power-plant stacks and a fuel tank in the foreground, representing resilient energy supply (AI-generated illustration)
Resilience
03 — Resilience

Stay reliable

Design systems that ride through outages and demand peaks, balancing reliability against cost and emissions.

The platform

Clear results, built on research

LEC ENERsim returns costs, efficiency, emissions and autarky for each scenario, with energy flows down to every component and time step.

  • Design and operational optimization
  • System-level KPIs at a glance
  • Sankey and timeseries energy-flow visualization
  • Detailed economics, environmental & resilience analysis
ENERsim system builder canvas showing connected components — PV, battery, genset, heat pump and chiller — for a resilient energy system
Sankey diagram of energy flows from sources through converters to heat, cold and electricity demand
Time-series chart of a year of simulated energy flows between components
Demand profile chart showing cooling demand across the simulated year
Yearly cash-flow chart showing CAPEX, OPEX and replacement costs over the project lifetime
System builder — drag & connect components

Included out of the box

Historic weather data for renewables
Custom load data or standard load profiles
Historic power market data (spot)
Multi-vector (electricity, heat, cooling, fuels)
Detailed cost analysis
Autarky and islanding analysis
Flexibility analysis
Resilience testing
Maritime regulatory framework (IMO, EU ETS, FuelEU Maritime)
Over 50 generic and complex component models
Multiple libraries (e.g., Renewables, Microgrid, Maritime, Hydrogen)
SDK interface for advanced integrations such as predictive control

Use Cases

Application areas

Battery storage and renewables balancing a flexible microgrid, with an EV charging hub for passenger cars and heavy-duty trucks plugged into dedicated charging columns (AI-generated illustration)
01

Hybrid Microgrids

Combine solar and wind with battery storage and demand-side flexibility, including smart EV charging, to use spot-price spreads while keeping supply reliable.

Learn more View demo
Container ship docked at a port terminal served by ship-to-shore gantry cranes, with containerized shore-power units on the quay (AI-generated illustration)
02

Maritime Systems

Optimize on-board and shore-side energy for vessels and ports, including alternative fuels and onboard carbon capture.

Learn more View demo
Critical infrastructure campus with a resilient multi-vector energy system: solar power, battery backup, cooling towers and heat-recovery piping (AI-generated illustration)
03

Resilient Energy Systems

Design multi-vector power, heat and cooling systems that keep critical infrastructure running through grid outages and component failures, with dedicated backup and cellular CORE-SHELL architectures.

Learn more View demo
Large-scale coastal power plant with multiple stacks, fuel storage tanks, a solar field and offshore wind turbines (AI-generated illustration)
04

Future Power Plants

Size hydrogen power plants and future-fuel production, storage and distribution, including hybrid setups with energy storage and heat pumps.

Learn more Demo coming soon

Services

How to use LEC ENERsim

Web Application

Build, simulate and optimize energy systems in the browser, with no installation.

Customized Development

Tailored models and solutions for the components and constraints unique to your system.

Optimization as a Service

You provide load, site and cost data; we deliver the optimized system design and a written analysis.

Advanced Use & Controls

A REST API with SDKs to embed LEC ENERsim in your own tools and control loops.

Partners

HDC Solutions is LEC's strategic distribution partner for LEC ENERsim, with a focus on critical infrastructures. Under the THORIUM brand, HDC Solutions offers a comprehensive suite: the innovative ENERsim platform from LEC is extended with consulting, installation, maintenance, and customized add-ons. Together, we deliver adaptive, crisis-proof energy systems that perform reliably even under extreme conditions.

Resilience is the future

Intelligent energy concepts for safety-critical infrastructures: our modular platform combines predictive strategies with adaptive system logic — for maximum resilience, self-sufficiency and security of supply.

HDC Solutions

Request a free demo license

See what LEC ENERsim can do for your energy system. Get in touch and we'll set you up.

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