Tata Group Company: Gujarat’s largest on-site solar power system - CleanMax
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Tata Group Company: Gujarat’s largest on-site solar power system

High quality designing: better generation!

Overview
A 2 MWp solar power system started supplying power to this Tata Group Company in Gujarat in the August of 2015. It is the largest on-site solar power plant in the state. Installed on metal roofs, the system is exceeding the expected energy output by 105% on an average since the time of installation.

Quick Facts

  • LocationGujarat
  • Capacity2036 kWp
  • Type of systemMetal Roof installation
  • Annual generation28.5 lac units annually
  • Carbon dioxide abated2690 tons CO2 abated annually
  • Date of commissioningAugust 2015

Challenges

  • Zero penetration of roof – The project was executed without a single penetration on the client’s roof sheeting (standing seam galvanium sheet). German-made, non-penetrating module mounting clamps were used to achieve this. While this is only possible on certain roof sheets, CleanMax Solar uses non-penetrating systems whenever possible.
  • Loading on the rooftop – All the module mounting structures used are aluminum, thereby reducing the load on the roof significantly. The aluminum structure-based design puts a load of 20-25 kg/sq.m. on the roof, compared to ~70kg/sq.m. for conventional steel structure design. While lightweight, the structures are designed to last for more than 25 years, and to withstand the highest possible wind speeds at the plant location, based on historical wind data and IS standards, and with an additional margin of safety.

Solution

Executed in record time – Since the plant was a key component of the client’s cost reduction programme, they were very keen that it be set up at the earliest. Working under tremendous pressure, CleanMax executed the project in record time. The site was mobilised in June, 2015 and the plant (2 MWp spread over two metal roofs) was completed by August, 2015. This execution time of 2 months is half that usually taken to execute rooftop solar projects (3-4 moths) and is particularly notable in the face of strict safety regulations at the client’s factory and the challenging working conditions, including working on rooftops 20 metres high.

Power loss reduction – Despite the plant being Megawatt scale, central inverters as well as transformers have been avoided. Instead more expensive string inverters have been used and all connections have been made at LT (415V) to minimize energy losses involved in step up as well as the higher loss levels in central inverter systems. The electrical layout has been created to ensure that the cabling from the roof travels the minimum distance and connects directly to the LT distribution panels in the factory below. The principle of enabling consumption within the loads nearest to the generation source has been used in establishing which solar power plant output should connect to which client LT panel.

Highlights

Tata Group is widely seen as a thought leader in the country, and today they are leading users of rooftop solar power as well. When this Tata Group company chose CleanMax Solar to be their solar partners for a 25-year long journey, our zeal to meet client expectations and quality standards was very high. We met this challenge by installing the solar power plant in a record time of 2 months, surpassing our benchmark for installation speed. This speed was achieved while also maintaining a strict adherence to our own quality, safety and compliance standards, as well as those of Tata Group company.

Disclaimer:

The document contains information based on project undertaken by Clean Max Enviro Energy Solutions Pvt. Ltd. While due care has been taken to ensure the accuracy and completeness of the information supplied herein, Clean Max Enviro Energy Solutions Pvt. Ltd. cannot be held responsible for any errors or omissions.

Tata Group Company: Gujarat’s largest on-site solar power system

Overview
A 2 MWp solar power system started supplying power to this Tata Group Company in Gujarat in the August of 2015. It is the largest on-site solar power plant in the state. Installed on metal roofs, the system is exceeding the expected energy output by 105% on an average since the time of installation.

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