Carry out energy audit of your house based on guidelines given in the book and write steps to reduce the use of energy. Study your electricity bill before and after taking steps. That is the conclusion of your project. – Maharashtra State Board Class 12 Environmental Studies (EVS) project topic and guidance.
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Project 04 : Carry out energy audit of your house based on guidelines given in the book and write steps to reduce the use of energy. Study your electricity bill before and after taking steps. That is the conclusion of your project. is an officially approved project topic in the Maharashtra State Board Class 12 Environmental Studies and Water Security curriculum. This comprehensive study equips students with practical field methodologies, ecological analysis, and empirical data required for securing an 'A' grade in school/junior college internal assessments.
Environmental Education and Water Security emphasizes sustainable development through scientific investigation. The practical documentation provided below covers the core findings, observations, and policy measures needed for comprehensive academic evaluation.
Aim of the Study: To conduct a systematic electrical energy audit of a residential household, identify energy-wasting appliances, adopt power-saving measures over two billing cycles, and evaluate monetary and carbon savings from electricity bills.
Physical audit of wattage plates on domestic appliances, calculating theoretical monthly unit (kWh) consumption, recording daily meter readings for 60 days, introducing BEE star-rated and behavioral changes, and comparing official utility bills.
This scientific investigation conforms strictly to Maharashtra State Board practical guidelines, incorporating primary survey data, empirical observations, and practical field documentation.
The following empirical observation matrix demonstrates standard data collection parameters, field measurements, and recorded outcomes for this project study:
| Appliance Name & Rating | Initial Hours / Day | Initial Units (kWh/Mo) | Post-Intervention Hours / Settings | Final Units (kWh/Mo) | Net Energy Saved |
|---|---|---|---|---|---|
| Electric Water Geyser (2000W) | 2.0 hrs / day | 120 units | 0.8 hrs / day (Thermostat 48°C) | 48 units | 72 units saved (60% cut) |
| Split Air Conditioner (1500W) | 6.0 hrs @ 18°C | 135 units | 4.0 hrs @ 25°C + Timer mode | 75 units | 60 units saved (44% cut) |
| Ceiling Fans (3 × 75W Old Induction) | 12.0 hrs / day | 81 units | Upgraded to 28W BLDC Fans | 30 units | 51 units saved (63% cut) |
| Refrigerator (Frost-Free 280L) | 24 hrs (Continuous) | 42 units | Defrosted weekly, door seal repaired | 32 units | 10 units saved (24% cut) |
| Lighting (Mix of CFL & Tubes) | 6.0 hrs / day | 36 units | 100% replaced with 9W/18W LEDs | 14 units | 22 units saved (61% cut) |
| TOTAL MONTHLY CONSUMPTION | -- | 340 Units (Rs. 3,120) | -- | 238 Units (Rs. 1,980) | 102 Units / Rs. 1,140 Saved |
The field study and investigation of Project 04 focuses on the following key environmental observations and highlights:
A comprehensive analysis of Project 04 reveals crucial insights regarding energy conservation and local ecological resilience. By examining empirical data collected in the field, students understand the direct impact of human activity on ecosystems and learn practical conservation strategies applicable to Maharashtra's local environment.
The greenest energy is the energy we never use. Conducting a household energy audit proves that simple behavioral discipline and energy-efficient retrofits can substantially lower electricity bills while directly reducing the coal burned in thermal power stations.
To secure full marks (30/30) in your internal project evaluation, structure your handwritten project file in the following official order:
One unit of electricity is equal to one Kilowatt-hour (1 kWh), which is the energy consumed by a 1,000-watt appliance running continuously for one hour.
Star ratings created by the Bureau of Energy Efficiency (BEE) ranging from 1 to 5 stars; appliances with 5 stars consume the least electricity and are the most efficient.
Brushless Direct Current (BLDC) fans use permanent magnets and electronic commutators, consuming only 28-32 watts compared to 75-80 watts of traditional induction motor fans.
A dirty, clogged filter restricts airflow, forcing the compressor motor to work much harder and run longer cycles to achieve the set temperature.
In India, where over 70% of electricity is generated by burning coal, saving 100 units prevents approximately 82 kilograms of carbon dioxide (CO2) from entering the atmosphere.