Case Study: Larsen & Toubro – Hazira


Larsen & Toubro, commonly known as L&T, is an Indian multi-nationalconglomerate headquartered in Mumbai. The company has business interests in engineering, construction, manufacturing goods, information technology, and financial services, and has offices worldwide

Larsen & Toubro - Hazira


Larsen & Toubro


L & T – Special Steeland Heavy Forging Pvt. Ltd


34,400 ft2

Project Location

Hazira, Surat

Case Study

Overall Savings

This is an administration office building of a manufacturing complex located in Surat. It consists of three stories


The challenge was to get all 19 points (i.e., to get minimum of 48% cost savings when compared to ASHRAE baseline design) under Energy & Atmosphere – Optimize Energy Performance credit for LEED India Platinum rating.



Early in the design process, Conserve facilitated a charrette to discuss desired green and high-performance features to get 19 points under EA Cr 1. Conserve explored possible number of Energy Conservation Measures (ECMs) in all areas using energy simulation and the most optimum of them were proposed.

The following Energy Conservation Measures were suggested and implemented by client:

  1. Efficient Building Envelopes (Fly Ash Brick & EPS Insulated Roof)
  2. High Performance Glazing (KT 440 DGU low-e coated)
  3. Efficient Lighting Design for interior and exterior areas
  4. Occupancy Sensors in required spaces
  5. Daylight Sensors wherever feasible
  6. CO2 Sensors
  7. Vapor Absorption Chiller (VAM) running on waste heat from the nearby forging plant
  8. Solar Photovoltaic Panels (40 kWp) to achieve the maximum points


Conserve’s energy analysis evaluated alternatives, leading to a package of systems proposed that are expected to reduce energy costs by 52.62% when compared to an ASHRAE 90.1-2007 code-compliant baseline building. Based on the above ECMs, the cost savings come to around ` 29 Lakhs per Annum. The payback period of the proposed building designs would be 3 years

Cost Saving

₹ 29 Lakhs
per Annum

Cost Reduction

energy costs from
baseline building


Ready to kickstart your journey to

Talk to our sustainability consultants.