Trigeneration Tamil Nadu House, Delhi
Challenge: India sees a rapidly growing cooling demand, which is predominantly covered by
electricity from coal fired power plants and costly diesel generators. Inefficient
cooling technologies aggravate India’s power shortage, increase its peak power
demand, cause frequent power cuts and more greenhouse gases emissions.
Objective: Increased use of trigeneration based energy efficient cooling technologies help to
reduce India’s power shortage and greenhouse gas emissions.
Target groups: Buildings and industry with simultaneous demand for electricity, heat and
cold, and energy service companies (ESCO) which can implement such projects. Implementation partner: Bureau of Energy Efficiency (Ministry of Power, Govt. of India)
Current Project phase: December 2008 – November 2011
India’s energy supply is not able to keep pace with the current growth rate of 6.7 % of the
economy with frequent power shortages and power cuts. In order to keep import
dependency in the conventional energy sector as low as possible, strategies for enhancing
energy efficiency and utilising renewable energy are increasingly the focus of India’s energy
Trigeneration technology - the simultaneous production of electricity, heat and cooling, is
largely unknown in India and not sufficiently tested. Air conditioning is a major source of
energy consumption with ambient temperatures reaching over 40?C in summer in most part
of the country. Present cooling technologies are predominantly based on compression
chillers which are driven by electricity from the grid. Due to losses in power generation and
transmission, only 25% of the primary energy used in a coal fired power plant reaches the
end user. In comparison a cogeneration or trigeneration system at the end users site, can
reach overall efficiencies of 80%, as it can utilize the waste heat from power generation to
cover the heating and cooling demand of the facility. In addition, there are no transmission
losses. The benefits are even higher, since the decentralized cogeneration and trigeneration
units are lowering peak power demand. They even could provide costly peak power and
reduce damaging power cuts in India if they are allowed to sell to the grid.
Most promising areas of trigeneration application include hospitals, hotels, departmental
stores, data centres, industries, etc. Overall it is estimitaed that there are several thousand
potential sites in India where trigeneration could be applied economically within a range of
200 kW to several MWper installed system. elel Project approach
The project consists of two major components:
? Setting up of a demonstration project at a suitable building in Delhi
? Measures for country wide promotion of the trigeneration technology
The Tamil Nadu State Guest House in New Delhi has already been chosen as a
demonstration site with high visibility. At the core of the trigeneration system will be a 350
gas engine driven by natural gas. The waste heat of the engine will be used in the elkW
kitchen and in a vapour absorption machine to provide cooling during the hot summer
months. In winter the system can be switched to room heating. The efficiency of the system
will be monitored for two years after installation to verify energy and greenhouse gas savings.
A best practice case study will be compiled and published. Various measures will be
undertaken for scaling up of the project through countrywide promotion of trigeneration.
Major project activities are as follows:
Major project activities:
? Setting up of a pilot plant in a public building
? Information dissemination
? Launch of a website providing centralized access to information
? Survey of potential locations, preparation of energy checks and energy audits
? Provision of information to trigeneration plant suppliers
? Development of a concept for improving the legal and economic framework
Dr Rudolf Rauch Dr Anant Shukla Manager – IGEN Senior Technical Expert - TRIGEN Indo-German Energy Programme (IGEN) Indo-German Energy Programme (IGEN)
Bureau of Energy Efficiency (MoP) Bureau of Energy Efficiency (MoP) thth4 Floor, Sewa Bhawan, 4 Floor, Sewa Bhawan, Sector 1, R K. Puram, Sector 1, R K. Puram, New Delhi 110 066. New Delhi 110 066. T +91 11 2617 9699 T +91 11 2617 9699 M +91 97174 58 799 M +91 96543 06 007 F +91 11 2617 8352 F +91 11 2617 8352 E-mail email@example.com E-mail firstname.lastname@example.org
? A “best practice” project convinces the target group of the economic and technical feasibility of trigeneration in
? Familiarity with trigeneration technology is enhanced.
? Interested persons are able to easily access information regarding the technology and suppliers.
? Potential sites for additional (privately financed) plants are evaluated.
? Suppliers of trigeneration plants develop the Indian market.
? The Indian government and / or individual states implement a concept for improving the legal and economic
framework for trigeneration (CCHP) plants.
? Decision makers in industry, the service sector and public
administration are made aware of the opportunities offered by trigeneration and incorporate these in their planning.
Being able to see the functioning of the pilot plant coupled with the easy accessibility of manufacturer information
lowers people’s hesitation to conduct their own feasibility studies. Indian plant manufacturers recognise trigeneration
as a market opportunity and develop relevant products. Foreign suppliers feel encouraged to venture onto the Indian
? Measurements at the pilot plant establish the impact not just
on the national climate balance but also on stabilising the power grid. The pilot plant saves about 20% to 30% of
primary energy obtained from coal power plants as compared to conventional systems. Grid load reduction takes
place mainly during peak load hours. About 40,000 tons of carbon dioxide emissions are saved in 20 years. Up to 100
privately financed plants between 200 to 2000 kW are initiated within five years due to the campaign.