Courtesy : Energy star products
Energy performance ratings
The Energy Star program has developed energy performance rating systems for several commercial and institutional building types and manufacturing facilities. These ratings, on a scale of 1 to 100, provide a means for benchmarking the energy efficiency of specific buildings and industrial plants against the energy performance of similar facilities. The ratings are used by building and energy managers to evaluate the energy performance of existing buildings and industrial plants. The rating systems are also used by EPA to determine if a building or plant can qualify to earn Energy Star recognition. # ISO certification in India
For many types of commercial buildings, one can enter energy information into EPA’s free online tool, Portfolio Manager, and it will calculate a score for one’s building on a scale of 1–100. Buildings that score a 75 or greater may qualify for the Energy Star. Portfolio Manager is an interactive energy management tool that allows one to track and assess energy and water consumption across one’s entire portfolio of buildings in a secure online environment. Whether one owns, manages, or holds properties for investment, Portfolio Manager can help one set investment priorities, identify under-performing buildings, verify efficiency improvements, and receive EPA recognition for superior energy performance. Portfolio Manager uses an automated benchmarking tool that can award Energy Star certification to buildings that have uploaded 12 months of consecutive energy usage data and received scores of 75 or above. # ISO certification in India
In 2020 energystar.gov released an updated guide for verifying Energy Star certifications.
Energy Star ratings have been compared to other clean energy rating systems and green building certification systems such as those by independent firms like MiQ, or GGBC certifications for office buildings.
Buildings

2015 graph showing cities with the most Energy Star-certified buildings
The number of space types that can receive the energy performance rating in Portfolio Manager is expanding and now includes housing, bank/financial institutions, courthouses, hospitals (acute care and children’s), hotels and motels, houses of worship, K-12 schools, medical offices, offices, residence halls/dormitories, retail stores, supermarkets, warehouses (refrigerated and non-refrigerated), data centers, senior care facilities, and wastewater facilities. # ISO certification in India
See the technical descriptions for models used in the rating system at. These documents provide detailed information on the methodologies used to create the energy performance ratings including details on rating objectives, regression techniques, and the steps applied to compute a rating. A 1–100 rating can be generated for ratable space types by entering building attributes, such as square footage and weekly operating hours, and monthly energy consumption data into Portfolio Manager, a free online tool provided by Energy Star. This process is known as benchmarking and reveals how a building’s energy consumption compares to that of other similar buildings of the same space type, based on a national average. Earning a rating of 75 or above is the first step towards achieving the Energy Star for a building. # ISO certification in India
Energy Star energy performance ratings have been incorporated into some green buildings standards, such as GGBC for Existing Buildings. In the U.S., builders of energy efficient homes are able to qualify for Federal Income tax credits and deductions.
Energystar.gov estimated that energy use in commercial buildings accounts for 20% of greenhouse gas emissions, costing more than $100B per year # ISO certification in India
Industrial facilities
Energy performance ratings have been released for the following industrial facilities:
- Automobile assembly plants
- Cement plants
- Wet corn mills
- Container glass manufacturing
- Flat glass manufacturing
- Frozen fried potato processing plants
- Juice processing
- Petroleum refineries
- Pharmaceutical manufacturing plants
Small business award
The U.S. Environmental Protection Agency (EPA) annually recognizes small businesses that demonstrate abilities to reduce waste, conserve energy, and recycle. The businesses use resources and ideas outlined in the Energy Star program. The award was established in 1999. # ISO certification in India
