Project Topaz

Asia’s Largest Integrated EV Plant Outside China.


First largest EV integrated bus plant in India, is an advance new generation plant having new range of electric buses with right blend of automation to ensure world class quality standard, which can cater Aluminum/GI Bus manufacturing.

State-of-the-art facility spread over 83 acre, has been designed with Green building norms with Zero discharge, Zero emission, Water conservation, Daylight & Rain water harvesting etc.

World class infrastructure with an expandable capacity of 10,000 buses per annum is having an Integration of MES system, ERP system (SAP), PLM & digital simulator makes it complete digital factory which can be monitored from remote location & control room.

Equipment’s compatible with Industry 4.0. Real time health monitoring of equipment and early detection of abnormality leads to timely preventive maintenance & minimum line stoppages.

Dedicated Quality gates at end of each line with digital defect capturing and real time feedback to source stations, to ensure timely correction and eliminating cost due to poor quality.

11th March’21

13th May’21

18th Nov’21

9th Dec’21

24th Jan’22

30th Jun’22

Q3 22-23

3,28,720 m2

Total area

39,066 m2

Covered area:


  • 1 Assembly line designed with multi model production concept, having utmost flexibility to cater the future needs of new model introduction & global quality standard buses.
  • 2 While critical processes are controlled through MES, DC nut runners being used for critical joints like U Bolt, wheel nuts, power steering gear box, Traction motors, prop. Shaft etc.
  • 3 Material Handling Equipment's are designed to minimize human interface & multiple handling.
  • 4 Conveyors are equipped with VFD which makes plant scalable to meet future volumes. Latest Andon system is integrated with conveyor for real time line monitoring & minimize losses.
  • 1 Designed to achieve dust free atmosphere and controlled climatic condition for Robotic Painting resulting in uniform DFT (80+/5µ) and high DOI (85, Mirror DOI is 100).
  • 2 Fully automatic process assisted with conveyor, avoids direct manual touch to bus body resulting excellent end quality.
  • 3 Paint shop is equipped to produce Customized Multi color requirement.
  • 4 Process Parameter can be controlled and monitored through single window (Scada system) along with vehicle tracking system to diagnose the future field failure.
  • 1 End of line testing is equipped with latest & world class testing equipment like Roll & brake tester, Wheel alignment, Head lamp aiming, Electrical testing system which makes road worthy before road test.
  • 2 Latest & world class Shower testing facility which makes vehicle rain proof.
  • 3 1.6Km long test track, with water wading, cobble stone, pot hole & rumble test provision.


Plant Capacity

13,156 m2

Assembly Area

6,494 m2

Paint Area

3,249 m2

Testing Area

1.6 Km

Test Track