1. .  Potential Energy
the energy of a body or a system with respect to the position of the body. the particles of the system.

2. Kinetic Energy                                
energy of a body with respect to the motion of the body or of the particles in the system.

3. Joule   
work or energy, the work done by a force of one Newton when its point moves through a distance of one meter in the direction of the force.

4. .  Wattage                                           
amount of power, especially electric power, expressed in watts or kilowatts. The electric power is powered by an appliance or device.

5. Renewable energy                           
any naturally source of energy, as biomass, solar, wind, tidal, wave, and hydroelectric power, that is not derived from fossil or nuclear fuel.

6. Weather-stripping  
to apply weather stripping to (something).

7. Insulation
1 : Properly insulating your home will not only reduce your heating and cooling costs but make your home more comfortable.

8. Reactor
A Electricity. a device whose primary purpose is to introduce reactance into a circuit.3.Immunology, Veterinary Medicine.

9. Greenhouse Emissions
a gas that contributes to the greenhouse effect by absorbing infrared radiation.

10. Thermostat
a device, including a relay actuated by thermal conduction or convection, that functions to establish and maintain a desired temperature.

11. Ambient temperature
the temperature of the surrounding environment; technically, the temperature of the air surrounding a power supply or cooling .

12. Carbon Footprint
Carbon footprint describes the environmental impact of carbon emissions, measured in units of carbon dioxide.

13. Audit
an evaluation of a person, organization, system, process, enterprise, project or product. The term most commonly refers to audits in accounting, but similar concepts also exist in project management, quality management, and for energy conservation.
An unbiased examination and evaluation of the financial statements of an organization. It can be done internally (by employees of the organization) or externally (by an outside firm). 


14. .  Efficiency                          
The ratio of the work done or energy developed by a machine, engine, to the energy supplied to it, usually expressed as a percentage.