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The building sector in India is growing at a rapid pace and contributing significantly for the increase in energy demand. The increase in energy demand leads to increase in Green House Gas (GHG) emissions and hence global warming. Green buildings have demonstrated that about 25 to 30% reduction in energy consumption with respect to the National baselines, can be achieved by implementing energy efficient practices and technologies.
The advancements in the renewable energy technologies, policy interventions by the Government and the wider adoption of renewable energy sources have made the cost of renewable energy generation very competitive. In fact, buildings can become self-sufficient by generating their own energy requirements economically, through the use of onsite/ offsite renewable energy sources.
Against this background, the Indian Green Building Council (IGBC) has launched 'IGBC Net Zero Energy Rating System' in 2018. This rating system is a tool which enables the designer to apply energy efficiency concepts and adopt appropriate renewable sources by design to achieve Net Zero Energy Status. In case of an existing building, the tool enables implementation of energy efficient measures to reduce energy consumption and meet the rest of the energy requirements through renewable energy sources.
Net Zero Energy concepts and techniques encourage to use of Renewable Energy sources to meet the energy requirements of the building. It would result in
The rating system evaluates buildings on a performance-based approach. The rating system is evolved to be comprehensive and at the same time user-friendly. The programme is fundamentally designed to reduce the energy needs of a building and national priorities.
IGBC Net Zero Energy rating system addresses energy efficiency and Renewable Energy through the following sections
Note:
The mandatory requirements and credits earned at the preliminary review are only considered as expected. These mandatory requirements and credits are not awarded until the final documents are submitted, along with additional documents showing implementation of design features.
IGBC Net Zero Energy Rating System is designed for both new and existing buildings/ projects, both for air-conditioned and non-air-conditioned spaces.
Net Zero Energy Building (NZEB) Rating is applicable to Commercial, Industrial as well as Residential building projects those are able to off-set 100% annual grid energy use by renewable energy sources (either on-site and or off-site). These buildings include but not limited to offices, banks, IT parks, shopping malls, hotels, hospitals, airports, convention centers, educational institutions (schools, colleges, university Campus), Factory Building/ projects, Warehouses, Railway Stations, etc.
The rating awarded for IGBC Net Zero Energy under Design & Construction phase or Operations phase would be valid for a period of 3 years. The projects certified under Design & Construction phase shall apply for Operations phase certification with the prevailing version. The projects certified under Operations phase shall apply for recertification with the prevailing version
Projects can apply for IGBC Net Zero certification during Design and Operation phase, and following are the types of certification:
For more details, please click here.
The threshold criteria for certification levels are as under :
| Certification Level | Compliance Requirement (Percentage of renewable energy w.r.t. total annual energy consumption) | Minimum Points to Comply |
|---|---|---|
| Near Net Zero Energy | Meet/ offset 75% or more project’s annual energy requirement from on-site/ off-site RE sources | NA |
| Net Zero Energy | Meet/ offset 100% or Maximum Allowable Quantity* of project’s annual energy requirement from on-site/ off-site RE sources | NA |
| Net Zero Energy Platinum | Meet/ offset 100% or Maximum Allowable Quantity* of project’s annual energy requirement from on-site/ off-site RE sources | 80 |
* Maximum Allowable Quantity (MAQ):
(a) Maximum allowable quantity depends on the state electricity policy related to maximum allowable capacity for the respective project with respect to onsite and offsite/open access renewable energy sources.
(b) The maximum allowable quantity shall be equal or higher than 95% w.r.t. building’s annual energy consumption.
| Membership Category | Fee (₹) |
| IGBC Founding Member | ₹ 25,000 |
| IGBC Annual Member | ₹ 25,000 |
| Non Member | ₹ 30,000 |
| Membership Category | Base Fee | Additional fee for Projects with multiple buildings including common basements (Applicable for up to four buildings) | |||
| Overall built-up area | |||||
| 5,000 sqm & below | 5,001 sqm to 20,000 sqm | 20,001 sqm to 50,000 sqm | 50,001 sqm to 75,000 sqm | For each additional building with built-up area 5,001 sqm and above | |
| Flat Fee (₹) | Flat Fee (₹) | Flat Fee (₹) | Flat Fee (₹) | Flat Fee (₹) | |
| IGBC Founding Member | ₹ 1,80,000 | ₹ 2,60,000 | ₹ 3,55,000 | ₹ 4,75,000 | ₹ 50,000 |
| IGBC Annual Member | ₹ 1,90,000 | ₹ 2,70,000 | ₹ 3,70,000 | ₹ 4,90,000 | ₹ 50,000 |
| Non-Member | ₹ 2,00,000 | ₹ 2,80,000 | ₹ 3,80,000 | ₹ 5,00,000 | ₹ 50,000 |
* Design certification fee is applicable for projects in design and construction phase.
| Membership Category | Base Fee | Additional fee for Projects with multiple buildings including common basements (Applicable for up to four buildings) | |||
| Overall built-up area | |||||
| 5,000 sqm & below | 5,001 sqm to 20,000 sqm | 20,001 sqm to 50,000 sqm | 50,001 sqm to 75,000 sqm | For each additional building with built-up area 5,001 sqm and above | |
| Flat Fee (₹) | Based on sqm (₹) | Based on sqm (₹) | Flat Fee (₹) | Flat Fee (₹) | |
| IGBC Founding Member | ₹ 1,80,000 | ₹ 2,05,000 plus ₹ 6 per additional sqm over & above 5,000 sqm | ₹ 3,25,000 plus ₹ 6 per additional sqm over & above 20,000 sqm | ₹ 5,75,000 | ₹ 50,000 |
| IGBC Annual Member | ₹ 1,90,000 | ₹ 2,15,000 plus ₹ 6.25 per additional sqm over & above 5,000 sqm | ₹ 3,40,000 plus ₹ 6.25 per additional sqm over & above 20,000 sqm | ₹ 5,90,000 | ₹ 50,000 |
| Non-Member | ₹ 2,00,000 | ₹ 2,25,000 plus ₹ 6.50 per additional sqm over & above 5,000 sqm | ₹ 3,50,000 plus ₹ 6.50 per additional sqm over & above 20,000 sqm | ₹ 6,00,000 | ₹ 50,000 |
# Certification fee/ Provisional certification fee is applicable for projects in operation phase. The fee for Provisional certification is same as Certification fee, and projects which apply for Provisional certification need not pay Certification fee later.
NZ – Energy, Water and NZ Waste to Landfill
NZ – Carbon
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