A New Milestone in Responsible TMT Bar Manufacturing
Sri Durga TMT has reached an important milestone in its journey towards responsible steel manufacturing with a 91.36% verified greenness score and a 5-Star Green Steel rating for its TMT Bars.
The certification was issued by the National Institute of Secondary Steel Technology (NISST), established by the Ministry of Steel, Government of India, under the country’s Green Steel framework.
The certificate records an average emission intensity of 0.19 tCO₂e per tonne of finished steel (tfs) for 92,467 tonnes of TMT Bars produced during FY 2025–26. The certificate was issued on 5 August 2026 and is valid until 31 March 2027.
For Sri Durga TMT, this recognition represents more than a rating. It reflects a manufacturing approach where steel strength, product quality and environmental responsibility move forward together.
The Government of India’s Green Steel Taxonomy provides a defined framework for measuring the greenhouse gas emission intensity of steel and assigning green ratings based on verified performance.
What Is 5-Star Green Steel?
5-Star Green Steel is the highest green rating defined under India’s Green Steel Taxonomy.
The Government of India classifies steel according to its greenhouse gas emission intensity, measured in tonnes of CO₂ equivalent per tonne of finished steel.
The current classification is:
- 5-Star Green Steel: Up to 1.6 tCO₂e/tfs
- 4-Star Green Steel: Above 1.6 to 2.0 tCO₂e/tfs
- 3-Star Green Steel: Above 2.0 to 2.2 tCO₂e/tfs
Steel with an emission intensity above 2.2 tCO₂e/tfs is not eligible for a green rating under the taxonomy.
Sri Durga TMT’s certified emission intensity of 0.19 tCO₂e/tfs falls well within the 5-Star Green Steel category.
This makes the certification a measurable indicator of the environmental performance associated with the certified TMT Bar production.
What Does Sri Durga’s 91.36% Greenness Score Mean?
The 91.36% greenness score is not simply a sustainability claim.
Under the Green Steel Taxonomy, greenness is calculated by comparing the verified emission intensity with the 2.2 tCO₂e/tfs green-steel threshold.
The calculation is:
Greenness % = [(2.2 − Emission Intensity) / 2.2] × 100
With a certified emission intensity of 0.19 tCO₂e/tfs, the resulting greenness is approximately 91.36%.
In simple terms, the score provides a standardised way to communicate how far the certified steel production’s emission intensity is below the Government of India’s green-steel threshold.
For Sri Durga TMT, this gives customers and industry stakeholders a measurable environmental-performance indicator rather than relying only on general sustainability statements.
Why Does a 5-Star Green Steel Rating Matter?
Steel is one of the most important materials in construction. From homes and commercial buildings to infrastructure projects, TMT bars play a critical role in reinforced concrete structures.
Traditionally, TMT Bar selection has focused on factors such as:
- Strength
- Ductility
- Durability
- Quality consistency
- Manufacturing standards
- Reliability
Today, environmental performance is becoming another consideration.
A 5-Star Green Steel rating adds a verified environmental-performance dimension to the selection of steel.
For builders, contractors, developers, dealers and project stakeholders, this can be particularly relevant when sustainability targets and responsible material sourcing are becoming part of project planning.
For a TMT brand such as Sri Durga, the certification strengthens the message that quality steel and responsible manufacturing do not have to be separate priorities.
How Is 5-Star Green Steel Certified?
The 5-Star Green Steel rating is based on a defined certification and verification framework rather than a self-declared claim.
The Government of India’s Green Steel Taxonomy was notified in December 2024 as a framework for supporting India’s transition towards lower-carbon steel production.
The certification process involves several important stages.
1. Registration
The steel producer registers for Green Steel Certification through NISST.
2. Emission Data Preparation
The plant prepares the required production and greenhouse gas emission data according to the prescribed methodology.
The certification framework covers emissions up to the finished-steel boundary, including Scope 1, Scope 2 and specified Scope 3 emissions.
3. Verification
An Accredited Carbon Verification Agency (ACVA) verifies the submitted data.
The NISST certification process includes site-level verification and examination of supporting records and data.
4. Report Submission
Following verification, the ACVA prepares and submits the verification report to NISST.
5. NISST Review
NISST reviews the submitted information and verification results.
6. Certificate Issuance
Once the requirements are successfully completed, NISST awards the Green Steel Certificate with the applicable emission intensity, greenness percentage, star rating and certified quantity.
This structured process gives 5-Star Green Steel its value as a verified classification under India’s Green Steel framework.
Sri Durga TMT’s Green Steel Certification at a Glance
The certification issued to Sakthi Steel Industries Limited, Kancheepuram District, Tamil Nadu, records the following details for the certified TMT Bars:
| Certification Detail | Information |
| Product | TMT Bars |
| Green Steel Rating | 5.0 Star |
| Verified Greenness | 91.36% |
| Average Emission Intensity | 0.19 tCO₂e/tfs |
| Certified Quantity | 92,467 tonnes |
| Production Period | FY 2025–26 |
| Certificate Issued | 05 August 2026 |
| Certificate Valid Until | 31 March 2027 |
| Certifying Institution | NISST |
These figures provide a clear snapshot of the certified green-steel performance.
Where Does FE 550 TMT Bar Fit In?
For construction projects, environmental performance is only one part of choosing the right TMT Bar.
The FE 550 TMT Bar remains an important choice for applications where higher yield strength is required.
FE 550 refers to the steel’s specified yield strength grade, while 5-Star Green Steel refers to the environmental performance classification under the Green Steel Taxonomy.
These are therefore two different aspects of steel:
FE 550 → Strength and mechanical performance
5-Star Green Steel → Verified environmental performance
For customers considering Sri Durga FE 550 TMT Bar, this distinction is important. Product grade and green-steel rating should not be treated as the same specification.
Instead, they represent different factors that can contribute to a more informed material-selection decision.
Sri Durga TMT continues to position its FE 550 TMT Bar as a high-strength solution for modern construction while the brand’s Green Steel certification highlights its progress towards more responsible manufacturing.
Why Choose Sri Durga TMT Bar?
Choosing a TMT brand is an important decision because the steel becomes part of the structural foundation of a building.
Sri Durga TMT focuses on delivering dependable TMT Bars while continuously improving its manufacturing approach.
The latest 5-Star Green Steel certification adds another important dimension to the Sri Durga TMT proposition.
For customers looking for a TMT brand, the combination of product performance, manufacturing quality and verified environmental performance provides a more complete picture of the material they are choosing.
Whether the requirement is for residential construction, commercial projects or larger infrastructure applications, selecting the right TMT Bar requires consideration of the project’s technical and material requirements.
Sri Durga’s portfolio, including FE 550 TMT Bar, is designed to serve the evolving requirements of the construction sector.
A Greener Direction for the Steel Industry
India’s steel industry is moving towards a more sustainable future.
The Ministry of Steel’s Green Steel initiative focuses on reducing the carbon intensity of steel production through improvements in energy efficiency, renewable energy, process technologies, green hydrogen and other decarbonisation pathways.
The Green Steel Taxonomy creates a common framework for identifying and recognising lower-emission steel.
As this transition progresses, certifications such as 5-Star Green Steel can help businesses and customers better understand the environmental performance of steel products.
For Sri Durga TMT, achieving 91.36% verified greenness and a 5-Star Green Steel rating is an important step in that direction.
Strength That Moves Forward
A modern TMT brand must look beyond strength alone.
It must focus on quality, consistency, reliability and the changing expectations of the construction industry.
Sri Durga TMT’s 91.36% verified greenness and 5-Star Green Steel rating mark an important milestone in that journey.
With certified TMT Bar production achieving an emission intensity of 0.19 tCO₂e/tfs, Sri Durga TMT is taking a measurable step towards more responsible steel manufacturing.
And as the construction industry moves towards a more sustainable future, Sri Durga TMT continues to build towards one clear goal:
Stronger Steel. Responsible Manufacturing. A Greener Future.
Frequently Asked Questions
1. What is 5-Star Green Steel?
5-Star Green Steel is the highest green rating under India’s Green Steel Taxonomy for steel with emission intensity up to 1.6 tCO₂e/tfs.
2. What is Sri Durga TMT’s greenness score?
Sri Durga TMT’s certified TMT Bar production has achieved 91.36% verified greenness.
3. What is the emission intensity of Sri Durga’s certified TMT Bars?
The certificate records an average emission intensity of 0.19 tCO₂e per tonne of finished steel.
4. Is FE 550 the same as 5-Star Green Steel?
No. FE 550 is a strength grade, while 5-Star Green Steel is an environmental-performance classification.
5. Who issues Green Steel certification in India?
NISST, established by the Ministry of Steel, Government of India, administers the Green Steel certification and rating process.