Thermal Power Solution
Recover Waste Heat. Generate More Power. Improve Plant Efficiency.
Recover low and medium-temperature waste heat from boiler stacks, air preheaters, economisers, turbine auxiliaries, and condenser cooling systems to generate additional grid electricity.
Executive Summary
Unlocking bottoming-cycle energy from thermal station exhaust.
Thermal power plants convert fuel into electricity by producing high-pressure steam to drive turbines. While this process delivers reliable power, a significant portion of the fuel's energy is ultimately rejected as waste heat through flue gases, condenser systems, cooling water, and auxiliary equipment.
This lost thermal energy represents a major power opportunity.
At Datre Renewable Energy, we help thermal power plants recover available waste heat and convert it into additional electricity using Organic Rankine Cycle (ORC) technology—improving plant efficiency, reducing fuel-specific energy losses, and increasing the value of existing generating assets.
Heat Source Mapping
Where Does Your Plant Lose Energy?
Large thermal power stations continuously reject recoverable thermal energy from several systems.
| Process Area | Typical Heat Source | Temperature Range |
|---|---|---|
| Economiser Exit | Flue Gas | 250–350°C |
| Air Preheater Outlet | Hot Flue Gas | 150–220°C |
| Boiler Stack | Final Stack Gas | 120–180°C |
| Turbine Auxiliary Systems | Process Heat | 100–180°C |
| Condenser & Cooling Systems | Low-Grade Heat | 40–80°C |
Disclaimer: The temperatures, recovery potential, and energy estimates presented on this page represent typical industry values and are provided for illustrative purposes only. Actual recoverable energy depends on plant design, operating conditions, production capacity, heat source characteristics, and overall system configuration. A detailed engineering assessment is recommended to determine the feasibility and performance of an Organic Rankine Cycle (ORC) system for your facility.
Did you know?
Conventional thermal power plants typically convert only 35–45% of the fuel's energy into electricity, while the remaining energy is rejected as heat through exhaust gases, condensers, and cooling systems. Depending on plant configuration, part of this thermal energy can be recovered using ORC technology.
Operating Impact
What Does This Mean for Your Plant?
Every hour your power plant operates, valuable thermal energy leaves the facility without generating additional revenue.
Lower Overall Efficiency
Discharged flue gas and condenser heat reduce the total net heat-to-power conversion ratio.
Higher Fuel Consumption
Unrecovered exhaust heat forces higher fuel burn per megawatt-hour of electricity delivered.
Increased Operating Costs
Operational expenditures expand without secondary bottoming-cycle power recovery.
Higher Carbon Emissions
Lower net thermodynamic efficiency inflates CO₂ emissions per unit of electricity produced.
Lost Generation Opportunities
Unused stack flue gas and auxiliary thermal streams bypass potential revenue generation.
Output & Financial ROI
Typical Energy Recovery Potential
Datre manufactures standard 10 kW, 50 kW, and 500 kW ORC systems that scale modularly for thermal power stations of any capacity.
| Process Heat Stream | Power Output |
|---|---|
| Small Captive Unit / Economiser Stream | 10 kW – 50 kW |
| Industrial Captive Boiler / Preheater Flue | 50 kW – 500 kW |
| 100 MW – 250 MW Thermal Power Station | 500 kW |
| 500 MW – 800 MW Utility Thermal Complex | 500 kW – 5 MW+ |
Imagine the Value for a 500 kW System
Suppose a 500 kW Datre ORC System operates 8,000 hours per year, generating approximately 4,000,000 kWh (40 Lakh units) of electricity annually.
If industrial electricity value averages ₹7–9 per kWh, the generated captive power represents:
Instead of allowing recoverable thermal energy to escape through the stack or auxiliary systems, your thermal plant can convert waste heat into reliable electricity using modular Datre 10 kW, 50 kW, and 500 kW ORC units to significantly increase power output.
Engineering Approach
How Datre Helps Thermal Power Plants
Every thermal power station has unique operating conditions and waste heat recovery opportunities. Datre Renewable Energy provides customized engineering solutions that maximize energy recovery while integrating seamlessly with existing plant infrastructure.
Value Proposition
Benefits for Thermal Power Plants
High reliability, low maintenance, and immediate increase in total electrical generation.
Increase Power Generation
Generate additional electricity from recoverable waste heat without increasing fuel consumption.
Improve Overall Plant Efficiency
Recover unused thermal energy and maximize the value extracted from every tonne of fuel.
Lower Specific Fuel Consumption
Produce more electricity from the same fuel input, significantly improving plant economics.
Reduce Carbon Emissions
Increase power generation efficiency while lowering greenhouse emissions per unit produced.
Maximise Existing Assets
Improve performance of boilers, turbines, and auxiliaries without major steam cycle changes.
Future-Ready Power Generation
Support energy efficiency initiatives, decarbonisation strategies, and long-term sustainability.
Technology Advantage
Why Organic Rankine Cycle (ORC)?
ORC technology is highly effective for recovering medium-temperature waste heat that conventional steam cycles cannot economically utilize. By converting this unused thermal energy into electricity, ORC systems enhance the performance of existing thermal power plants with minimal operational impact.
- No additional fuel required — Operates purely on stack gas, preheater heat, and process flues
- Increased electrical output — Adds bottoming-cycle megawatts to existing plant busbar
- Fully automatic operation — Unattended, self-regulating closed loop
- High operational reliability — Engineered for continuous thermal power plant duty
- Low maintenance requirements — Non-corrosive, non-eroding working fluid
- Easy integration with existing plants — Seamless connection without main cycle disruption
- Long operational life — Proven 20+ year lifecycle with stable performance
Qualification
Is Your Plant a Good Candidate?
Your thermal power plant may benefit from ORC technology if you operate:
If your facility continuously rejects heat through boiler exhaust gases, economisers, or auxiliary thermal systems, there is a strong possibility that recoverable energy is currently being lost.
NEXT STEP
Discover Your Plant's Energy Potential
Every thermal power plant has unique operating characteristics. Our engineering team can evaluate your facility and estimate: