JIS Energy is a U.S.-based energy technology company dedicated to advancing the way energy systems are designed, evaluated, and deployed. With deep roots in energy systems engineering and a mission to make complex modeling tools accessible and actionable, we develop software that empowers energy professionals to make data-driven decisions for resilient, efficient, and cost-effective infrastructure.
Our flagship platform, CogenS™, was built to solve real-world challenges in the combined heat and power (CHP) and microgrid sectors. Over the years, we have expanded CogenS into a robust suite of technoeconomic modeling tools that support the design and evaluation of cogeneration power plants, boilers, hot water heaters, chillers, and cooling towers. Each module enables side-by-side manufacturer comparisons using real building data, weather files, utility tariffs, and equipment specs to determine the best solution based on total cost of ownership, emissions, and energy performance.

JIS energy

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JIS energy

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