Visaka Atum – India’s First Integrated Solar Roof

Visaka Atum – India’s First Integrated Solar Roof

by Editor
Visaka Atum

In early 2017, Visaka Industries has made a cement board named, ‘V-Next,’ which would go on to form the base of ATUM by Visaka Industries. Solar Roof Tile is one of its products.

“We developed this board using fly ash, cement and recycled cement bags. It is strong and can be easily substituted for plywood, gypsum boards and sand/water-based construction materials, and is already being used by several people who wish to build sustainable homes,” he says.

Then, over three years ago, they decided to come up with solar roofs. After about 2.5 years of research and development, the ATUM integrated solar rooftop was launched in December 2018.

The ATUM rooftop was made by fixing 72 solar cells on V-next. It serves all functions of a traditional roof while also regulating the temperature with high thermal conductivity. Unlike traditional solar panels, ATUM does not have to be mounted upon surfaces and can be placed right next to each other, allowing maximum utilization of space.

The 7ft x 3ft ATUM rooftop can generate about 320W of power. It needs to be placed like tiles depending on the dimensions of the roof of a particular home. It is sturdy, rustproof, leak-proof, can bear a load of up to 300 kgs and withstand fire for almost 2 hours and 57 minutes.

ATUM walkways consist of eight panels of 2.5 kW that charge four batteries of 150 Ah each

Also ATUM – the integrated hybrid solar-roofing system is now been recommended for sustainable off-grid, the air-conditioned walkway has been favoured by Air India SATS Airports Services Private Ltd, a gateway services and food solutions provider.

It is expected to provide better levels of comfort to all customers and smooth access to people with reduced mobility while they board the aircraft. The ramp walkway will be established in the AISATS Hyderabad station, according to Ramanathan Rajamani, CEO of the Air India SATS Airports Services.

ATUM will function as a traditional roof whilst giving 20 per cent more output than conventional solar panels.

It has integrated solar panels with a fibre cement base made of Vnext boards that regulate temperature with higher efficiency.

Technical Specification

  • Electrical characteristic standard test conditions (STC)
Module TypeVIL-320P
Maximum Power -Pmpp(W)320
Positive Power Tolerance0~2.5%
Open Circuit Voltage -Voc(V)46.18
Short Circuit Current -Isc(A)9.06
Maximum Power Voltage -Vmpp(V)37.2
Maximum Power Current -lmpp(A)8.61
Module EfficiencyApprox. 16%
  • Mechanical Characteristic
Dimensions1980 x 1010 x 14 mm (Board Thickness)
Weight44.0 Kg
FrameFrame Less
CellsPolycrystalline – 72 cells.
Junction BoxRated current ≥ 15A,IP ≥ 67,TUV&UL
CableLength 1000mm,1x4mm
ConnectorMC4/compatible with MC 4
  • Temperature Characteristics
Voltage Temperature Coefficient-0.300±0.024%/°C
Current Temperature Coefficient0.059±0.007%/°C
Power Temperature Coefficient-0.342±0.004%/°C
  • Maximum Ratings
Maximum System Voltage(V)1000
Maximum Over-current Protection Rating15A
Series Fuse Rating(A)15
Reverse Current Overload(A)20

  • Sustem Design
Temperature Range-40°Cto+85°C
HailMax.diameter of 25mm with 23m/s impact speed
Maximum CapacitySnow 5400 Pa,wind 2400 Pa
Safety Application ClassClass A
Safety Class In Accordance With IS 61140Class ll
Fire Safety ClassClass A
Recommended Maximum Series/parallel Module ConfigurationsMax 21 in series


AISATS ATUM walkways consist of eight panels of 2.5 kW that charge four batteries of 150 Ah each.

This off-grid solution can work up to six hours with holding a weight of over 300kgs on the roof, and powers two air-conditioners of 0.75 tonnes each.

This fire-resistant and shock-proof walkway can also withstand winds up to 200 kilometres per hour. One of the topmost requirements of Air India SATS was that the walkway survives varying wind conditions at the apron.

Vamsi Gaddam, Joint Managing Director, Visakha, said, “ATUM will be an essential roofing solution in the near future for any application that require power and a roof.”

Atum is used in various other applications as well, it can be used in various sectors as well as a alternative energy source. Stay tuned for more info about Visaka Atum, its use and its applications.
Tags: Solar energySolar Panel

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