Grid connected Solar system:

     A grid coupled PV system essentially consists of the PV panels (modules), one or several solar inverters, a protections device for automatic shutdown in case of a grid breakdown and a counter for the fed in solar electricity.
     The components of a grid-connected PV system include the PV modules, a power inverter, a safety device to power down at failures in the grid and an electricity meter. The "mains-commutated" inverter converts the direct current (DC) provided by the modules to alternating current (AC), simultaneously synchronizing the AC output to the AC in the grid. The power-generating capacity of a photovoltaic system is denoted in kilowatt peak (measured at standard test conditions and a solar irradiation of 1000 W per m²).
     *For further subsidy details see Public information.

OFF-Grid Solar photovoltaic system

     A stand-alone photovoltaic system can be used to generate the needed electric energy. The solar modules only produce electric energy during daytime, it is necessary to store energy for the night or for cloudy days. Such storage systems mostly use rechargeable lead batteries, due to their ability to accept with high efficiency both low and high input voltages. A battery regulator prevents overcharging, a load shedding circuit prevents deep discharges. Because of the high differences in energy harvest between winter and summer it is recommended to use hybrid systems for year-round applications, such as battery storage.
     *For further subsidy details see Public information.


     Solar Home Lighting system is a portable mini off-grid system that lets you use solar energy in an efficient and inexpensive way. It comes with fan, light and TV that run on DC, so that no energy is wasted in DC to AC conversion.

     When solar panel generates DC electricity, it goes through the Solar Home Lighting System, which has an in-built solar charge controller, to power DC electrical equipment such as lights, fan and TV. It also has in-built battery to store solar energy for future use.

     Solar Home Lighting System, compact, portable and easily mountable, is an economical solution to all your power problems and comes in an easy-to-install kit.
     *For further subsidy details see Public information.

Solar Street Lighting System

     Solar Street lighting system is a device that operates using the Light energy available from the sun to provide lighting during night time. The Solar PV outdoor lighting is a reliable and an efficient stand-alone system. It consists of a Solar PV module, a Battery & a Luminary with very high efficient electronics all mounted onto a pole with necessary hardware & cables. It s completely independent from utility power and the system is powered by clean solar energy.
     *For further subsidy details see Public information.



     Biogas typically refers to a mixture of different gases Such as Methane, Carbon-di-oxide, Hydrogen sulphide produced by the breakdown of organic matter in the absence of oxygen. Biogas can be produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste, food waste and Cow dung.
     *For further subsidy details please see:
Website :

The National Biogas and Manure Management Programme (NBMMP)

     The National Biogas and Manure Management Programme (NBMMP) is a Central Sector Scheme.
This target for the setting up of Family Type Biogas Plants mainly for rural and semi-urban/households.
A family type biogas plant generates biogas from organic substances such as cattle –dung, and other biodegradable materials such as biomass from farms, gardens, kitchens and night soil wastes etc.
The process of biogas generation is called anaerobic digestion (AD) and it provides

  1. Clean gaseous fuel for cooking and lighting,
  2. digested slurry from biogas plants is used as enriched bio-manure to supplement the use of chemical fertilizers
  3. It improves sanitation in villages and semi -urban areas by linking sanitary toilets with biogas plants, which help in reducing the causes of climate change.


     Wind power is the use of air flow through wind turbines to mechanically power generators for electricity. Wind power, as an alternative to burning fossil fuels, is plentiful, renewable, widely distributed, clean, produces no greenhouse gas emissions during operation, uses no water, and uses little land.


  1. Renewable Purchase obligation mandated by Central State Regulatory Commisssion and is applicable to Distribution Licensee/Power distribution companies (DISCOMS) , Open access Consumer & Captive consumer.
  2. The Regulatory Commission in each State mandates a certain percentage of electricity generated through the above process to be from renewable sources.

     Official website link for RPO target for UTs:
Renewable Energy Certificate

  1. A certificate to prove that energy or electricity produced is from a renewable source, such as wind,solar, hydro, and biomass.REC is tradable and investers can exchange them in a barter style.
  2. REC is an essential component of a plan designed to promote the production of renewable and sustainable energy.
Official website link for REC and its procedures


Energy Conservation Act

    The Energy Conservation Act, 2001 (Act No.52 of 2001) was enacted by the Govt of India and later on amended as The Energy Conservation (Amendment) Act 2010 Act No.28 of 2010) in August-2010.


     Puducherry Government has initiated the Standards and Labeling (S&L) programmes, as per the BEE guidelines, to provide the consumer an informed choice about the energy saving and thereby the cost saving potential of the relevant marketed product. The S&L scheme widely covers 21 appliances under the star labeling program, out of which the affixing BEE’s star label for 4 appliances was mandatory and for 17 appliances is voluntary.
     The list of appliances covered under star labeling program is as below,

1. Room Air Conditioner 12. Computers(Laptops/Network)
2. Tubular Fluorescent lamps 13. Ballast
3. Frost Free Refrigerator 14. Office equipments
4. Distribution Transformers 15. LPG Gas stoves
5. Direct Cool Refrigerator 16. DG Agricultural pumpset
6. Induction Motors 17. Diesel Engine Pumps
7. Agricultural pumpsets 18. Solid State Inverters
8. Ceiling fans 19. Cassete & Floor Standing Air Conditioners
9. Electric Geyser 20. Inverter ACs
10. Color Television 21. LED Lamps
11. Washing Machine  
Use Mobile app “BEE Star label” on Apple or Android smart phone, while purchasing appliances for comparison among the products.
Download : Please see notifications


     TThe ECBC has been incorporated in the Building Bye-Laws by the Government of Puducherry through Department of Town & Country Planning in the year 2012.
      Energy Conservation Building - Any building designed for energy efficiency under the budget building definitions should be in accordance with the Energy Conservation Building Code, 2007 notified by Central/State Government.

    1. Energy Conservation Building Code shall apply to all buildings having 100 kW of connected load or 120 kVA of contracted demand or 1000 sq.m. or more of Air-conditioned Area.
    2. All buildings having 100 kW of connected load or 120 kVA of contracted demand or 1000 sq.m. or more of Air-conditioned Area shall use 20% of their power requirement from Renewable Energy sources either from their own installations or from Renewable Energy Generators.
    3. 5% of Renewable Energy requirement shall be met from Solar Energy sources and balance could be from non-solar renewable energy sources for each buildings.
    Download : Please see notifications


     The REAP a hrough NSIC Technical Centre, Chennai has conducted energy audit for 14 government buildings in U.T. in two phases.


     Perform, Achieve and Trade (PAT) is a market based mechanism to enhance cost effectiveness of improvements in energy efficiency in energy intensive large industries and facilities, through certification on energy savings that could be traded. Targets for improvements in energy efficiency are set under section 14 of the Energy Conservation Act, 2001 in a manner that reflects fuel usage and the economic effort involved. The Government, in March 2007 notified units in nine industrial sectors, namely aluminium, cement, chlor-alkali, fertilizers, iron and steel pulp and paper, railways, textiles and thermal power plants, as Designated Consumers(DCs).

Gazette Notification Issued by Central Government on 27th May,2014 to make Energy Audit Mandatory for Designated Consumers
Download PAT Booklet
Download PAT Notification
Download PAT Rules
List of Industries in U.T. of Puducherry Covered Under PAT Scheme
PAT cycle -II Target for DC’s
For latest DC’s updates:- Click here