Stanford Seed has selected Oorja as one of the disrupting companies for its wide range of innovative solutions offering. We are thrilled to be part of this program as it helps us leverage Stanford’s vast expertise in business execution and expansion which its network brings to us.

Stanford Seed workshop at Oorja

Stanford Seed workshop at Oorja
Stanford Seed workshop at Oorja
Oorja was shortlisted and selected by Stanford Seed after carefully reviewing many companies all across India. Stanford team has visited our facility to conduct a thorough evaluation of our operations and business model which is required for the selection and then Oorja was selected for this prestigious scale-up program. This program helps us in further streamlining our business operations, improve market penetration as well as enhance overall customer satisfaction.
As we start on our journey of executing some of the major impact projects in the country, recognition from esteemed institutions across the world reassures our confidence in achieving our mission of providing innovative green solutions through which we deliver greater value to our customers.
We would like to take this opportunity to thank everyone who has helped us through this journey and we are looking forward to providing bigger and better solutions in the future.
Stanford Seed at Oorja
Stanford Seed at Oorja

Oorja Energy Eng’g has been shortlisted as one of the semi-finalist for the Global Cleantech Innovation Program (GCIP) – 2017 for its innovative solar thermal based poly-generation system that provides Power, Heat and Clean water. The system is modular, highly scalable and cost 1/3rd the capital cost of Solar PV with storage.


Global Cleantech Innovation Programme in India is run by United Nations Industrial Development Organization (UNIDO) in association with world’s largest clean technology accelerator (Cleantech Open USA) under the aegis of the ministry of MSME. It was participated by all selected companies, their mentors, trainers from Cleantech Open and officials from UNIDO, MSME, NDRC and AEEE


This is the second year in a row that Oorja’s innovation has been part of this program. Previously, Oorja’s Radiant Cooling technology was selected.

The UN Climate Change Conference (UNCCC) is the annual Conference of the Parties (COP) to the United Nations Framework Convention on Climate Change (UNFCCC). The annual COP is the supreme decision making body of the UNFCCC. In this international convention, 197 countries have committed themselves to reducing their greenhouse gas emissions. In light of the outcomes of the Paris Agreement, there is a lot of buzz and expectations for more reduction of emission of Greehouse Gases (GHG) and other positive climate change action plan.

Oorja has been selected to be a part of the India Pavilion at the event as a leading Cleantech Innovator. 
The event will showcase the innovations by Oorja in Cleantech Heating & Cooling and Oorja’s representive will also be part of the panel discussions at the event.

We would like to share this honour with all customers, vendors and partners whose contributions have helped us reach this stage.

About Oorja Energy:

Oorja Enegy is a Cleantech Heating & Cooling company offering innovative solutions that include radiant heating/coolingsolar heating for industrial processessolar coolingsolar desalination etc. for industrial and commercial sectors. All our solutions aim at using a renewable source or reducing the use of fossil fuel for heating & cooling requirements.

For more details, you can visit us at You can also click on any of our social media links below to know more about us.

We Love You. Please Like Us.

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Oorja was conferred with the Excellency Award by Eco Sure at The Solar Perspective Summit 2017 held in Hyderabad. Oorja was recognised for its innovation and their contribution in the development of Indian Solar Industry.

Mr Madhusudhan was one of the panelist. He spoke about varied Solar Thermal technologies and its applications in multiple industries. He also explained the audience about appropriate Solar Thermal technology for different temperature ranges.


Technologies Mr. Madhusudhan covered included Parabolic Trough Concentrator (PTC), Compound Parabolic Concentrator (CPC), Beam Down Heliostat and Solar Drying systems for industrial effuluent system.

He also shared case studies of two projects that were executed by Oorja using Solar Thermal technology. The first project that was discussed was Solar Cooking for the Devnar School for Blind and the second project was Industrial process heating for an automobile major.


There after he answered questions regarding Solar Thermal technologies.


The following processes in automobile manufacturing have scope for integrating solar heating:

  • Phosphating Process
  • Parts Washing
  • Paint Shop Drying
  • Sludge Drying
  • Effluent treatment

Solar Integration for Phosphating

Phosphating process is used as a pretreatment method in conjunction with another method for corrosion protection. Phosphate coating is usually applied to the components by immersing them in solution baths as shown below:

Phosphating auto parts

Such baths use electrical heaters or diesel/furnace oil fueled boiler for maintaining the bath temperature around 90 deg C. Concentrating Solar Thermal (CST) technologies can be used to provide the heat required for phosphating process without any change to the process.

Parts Washing using Solar Heat

Parts washer is used to remove contaminants or debris such as dirt, grime, metal chips etc. from the components before they are assembled. These washing machines today used electrical heaters to raise the temperature of the water being used for washing.

Compound Parabolic Collector

The temperature of the water is between 70-90 deg C and this can be provided by Compound Parabolic Collector (CPC) shown above. CPCs can be installed even on the shed roof. Solar heat can also be used during non-solar hours by incorporating hot water storage tank.
CPCs provide low concentration that is suitable for providing pressurized hot water upto 120 deg C. They do not require tracking and can utilize even diffuse radiation from sun. The maintenance requirements are also low and hence, are appropriate for low grade heat requirements (70-120 deg C).

Solar Paint Shop Drying

Paint shop is used for many automobile components, machine components and other made gadgets use paint shop for resistance against exposure to element of nature like chemicals, moisture, rain, dust, and for having an aesthetically appealing product. Paint curing requires heat, mostly in the form of hot air. Today fossil fuel based heating is used in paint shops, to generate curing air temperatures ranging from 80° C to 150° C. Atmospheric air being taken in by the oven can be fed with air pre-heating using solar concentrators.
CPCs or Parabolic Trough Concentrators (PTC) as shown below can be used for such requirements with a suitable thermic fluid to air heat exchanger.

Parabolic Trough Concentrator

Solar Sludge Drying

Waste water sludge needs to be dried to minimize the its mass to reduce the sludge hauling and disposal costs. Today most industries dry sludge using open evaporation method. However, this process can be significantly accelerated by using solar heat in different forms.
Oorja integrates its expertise in Radiant Heating systems and Heat Pumps to design and implement a sludge drying system that further enhances the rate of drying of the sludge.

Solar Effluent Treatment

Many companies are now adopting Zero Liquid Discharge (ZLD) policy for treatment of effluents and a Multi Effect Evaporator (MEE) is generally being used to treat waste water and reuse it for process or other plant needs. MEE requires steam temperature of which is dependent on the number of stages of the evaporator. Today the MEE uses fossil fuels like diesel or natural gas or furnace oil.
Solar Concentrators can provide steam required for MEE to waste water treatment.

steam Boilers

The solar field can be integrated with the existing boiler to operate the system in a hybrid manner. Oorja can provide all required engineering for integration of existing boiler with solar concentrator field.

About Oorja Energy Engineering

Oorja Energy Engineering is a complete Cleantech Heating & Cooling solutions company. We offer energy efficient and renewables based products and solutions for industrial and commercial heating and cooling requirements.
Oorja is a Ministry of New and Renewable Energy (MNRE) approved manufacturer of Concentrating Solar Thermal (CST) systems. We can design & implement cleantech heating and cooling solutions for your specific requirements.

Oorja was represented by Mr. Madhusudhan Rao at the CII Green Power 2017 organised in Chennai. Mr. Madhusudhan was one of the panelist offering his thoughts and the work done by Oorja in the field of Biomass and Solar Thermal.

Mr. Madhusudhan talked about multiple potential Solar Thermal provides in the area of Rural electrification and Hydrogen fuel production, along with Industrial process heat and space heating/cooling solutions.


Solar Thermal can be used together in a hybridized power plant that can operate 365 days. This also solves the problem of low Plant Load Factor (PLF) that plagues the Biomass power projects.

Mr. Madhusudhan also discussed the importance of energy storage in delivering both heating and power solutions using Solar Thermal technologies.


He shared with the audience details of some of the innovative solutions Oorja has executed recently.

Heating in Food Processing

The following processes in food processing have scope for integrating solar heating:


Solar Drying

Drying is a part of most food processing industries and currently expensive fuels like electricity or diesel are used for drying. Concentrating Solar Thermal (CST) technology can be used in conjunction with the existing drying system to reduce the fuel consumption.

CST systems are versatile and can be integrated with drying systems that use steam or hot water or thermic fluid.

Pressurized Hot Water with Solar

Solar Compound Parabolic Collectors (CPCs) can be used to generate pressurized hot water that can be used for pre-heating Boiler Feed Water (BFW).


Pasteurization uses steam or thermic fluid for generating temperature around 90 Deg C to 150 Deg C using fossil fuel based heating systems. Concentrating Solar Thermal (CST) technologies can be used to provide the heat required for pasteurization process without any change to the process.

Solar Pasteurisation in Milk Industry

Solar Boiler

Parabolic Trough Concentrator (PTC), like the one shown below, can be used to generate temperatures up to 350 deg C and can be used as solar boiler. The heat generated from such solar boiler can be used for various food processing needs.

parabolic trough concentrator

Heat from the PTC field can be provided to the processes using any of the following steps:

  • Use thermic fluid in the PTC field and use hot thermic fluid to generate steam in a heat exchanger.
  • Steam can then be given to the process directly or can be integrated into a common steam header.

Since the output from solar field will vary depending on the radiation available, it is critical to design appropriate controls for efficient integration of solar and conventional boiler outputs.

Solar Heat can also be stored in an appropriately sized storage system for extending the usage of heat to non-solar hours.

Solar Sludge Drying

Oorja’s Solar Sludge Drying solution enhances the drying rate of an open pit sludge drying. Reducing the water content from the sludge significantly reduces the associated hauling and disposal costs.

Oorja’s solution integrates its expertise in solar heating, radiant heating and heat pumps to offer a unique solution that can help organisations reduce the drying time of the sludge significantly.

solar sludge drying

About Oorja Energy Engineering

Oorja Energy Engineering is a complete Cleantech Heating & Cooling solutions company. We offer energy efficient and renewables based products and solutions for industrial and commercial heating and cooling requirements.

Oorja is a Ministry of New and Renewable Energy (MNRE) approved manufacturer of Concentrating Solar Thermal (CST) systems. We can design & implement cleantech heating and cooling solutions for your specific requirements.

Radiant Cooling for Industrial Buildings

There are primarily three sources of heat in an industrial building:

  • Solar Heat Gains through Structure
  • Internal Machinery, Lighting & Occupancy
  • Ventilation

Of the above, solar heat gains forms much of the load during peak season, especially if the roof is made of GI or Galvanium sheets. The thermograph below shows the temperature profile for inside surface of the roof of an industrial building.


The roof absorbs all the solar radiation during the day. However, a metal roof has very low thermal mass compared to a RCC roof and therefore, the rise in temperature of the roof is much higher for a metal roof.

Though insulation can reduce the amount of solar heat gains, the surface temperature of the roof is still significantly high during summer months.

Radiant Cooling

Cooling is the process of taking the heat away and there are only three ways of heat transfer as shown below:

Types of Heat Transfer

Air conditioning uses convection as a means of heat transfer whereas Radiant Cooling uses radiant heat transfer as the primary means of heat transfer. Radiant Cooling uses “heat sinks” in ceiling or floor to take the heat away from the space as shown below.

Radiant Cooling

Radiant Ceiling Cooling

Radiant Ceiling Panels have been used in many industrial buildings in Europe & North America for heating and cooling. Oorja has poineered and provides radiant cooling solutions.

Radiant Ceiling Cooling

These panels act as heat sinks or sources depending on whether they are being used for cooling or heating. These cooling panels block the heat radiated from the metal roof and absorb the heat from the space below, thus cooling the space.


The above thermograph shows the radiant panel temperature that workers are exposed to compared to much higher temperatures without them.

Radiant Floor Cooling

Radiant Cooling can also be done by embedding specialized pipes in the floor to make it a heat sink as shown below.


Such installation can be planned for greenfield projects.

Energy Efficiency

Radiant Cooling offers 30-50% energy savings over conventional air based cooling systems due to:

  • Savings on fan motors due to very low air recirculation requirement.
  • Savings on chiller operation due higher temperature water requirement (16-20 deg C) compared to 7 deg C in conventional system.

About Oorja Energy Engineering

Oorja Energy Engineering is a complete Cleantech Heating & Cooling solutions company. We offer energy efficient and renewables based products and solutions for industrial and commercial heating and cooling requirements.

Oorja is a Ministry of New and Renewable Energy (MNRE) approved manufacturer of Concentrating Solar Thermal (CST) systems. We can design & implement cleantech heating and cooling solutions for your specific requirements.

Confederation of Indian Industries’ (CII) GreenCo rating is one of its kind in the world . The 6th edition of the Annual GreenCo Summit was held in Pune, India from 21st – 23rd June, 2017
Oorja Energy participated in the event as a supporter of GreenCo rating and exhibited the products and solutions we had to offer.
There was a great interest from different industry sectors in the solutions we had to offer. Some of the solutions that attracted interest of many were:
– Solar Paint Shop Drying System
– Solar Sludge Drying System
– Shopfloor Cooling using Radiant Cooling Panels

Team Oorja participated in ACREX 2017 – South Asia’s largest Refrigeration & Air Conditioning Exhibition at New Delhi between 23-25 February 2017. Oorja launched it newest product – Graphite based Radiant Cooling Panels. Graphite based radiant cooling panels offer higher output and better aesthetics required for implementing panel based radiant cooling solutions for offices.
With the launch of the new graphite based panels, Oorja now offers two options for radiant panels:
1. Extruded Aluminium Panel with Copper Pipes
2. Graphite based Panel with Copper Pipes
Both products received enthusiastic response from the visitors at the exhibition.

“The two entrepreneurs — Oorja Energy Engineering Pvt Ltd and Boond Engineering Services Pvt Ltd — have been conferred with WWF-India’s Climate Solver award under the GHG Reduction and Energy Access category, respectively,” a WWF statement said.

Climate Solver is a global innovation platform that encourages innovations in technology and business models that contribute towards mitigating climate change and enhancing energy access through their economic growth.

WWF’s Climate Solver platform first began in Sweden in 2008 and has now expanded to China, South Africa and India.

“Climate Solver platform complements the efforts by the government to provide momentum to the innovation ecosystem in the country.

“Through this platform, we have been showcasing some of the best innovations emerging from the SME sector that are scalable and have tremendous scope for mitigating carbon emissions and enhancing energy access to people living in remote and rural areas,” said Ravi Singh CEO, WWF-India.

Speaking at the event, Stefan Henningsson, Senior Adviser, Climate Innovation, WWF, Sweden, said that though there is a relatively high public research and development expenditure in the Indian market, one cannot see as many Indian cleantech entrepreneurs being listed on the stock market.

“Thus, the need for expansion finance for our Indian entrepreneurs is an issue of Indian competitiveness as well as the global emissions reduction,” he said.

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