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Solar-DC Inverterless Controller

World’s first dual input and output solar backup system with ac-dc output

March 2021
Gallery Solar-DC Inverterless Controller 1
Gallery Solar-DC Inverterless Controller 1


The Solar-DC Inverterless Controller has been developed based on the global trends of increasing relevance of distributed energy generation through rooftop solar and savings through energy efficiency. Solar-DC Inverter-less Controller for Off-Grid Homes or near Off-Grid-Homes (where grid is available but power availability is intermittent) is a Low Voltage DC technology based on 48V DC. The key product which will be used is the Cygni Integrated Built-in Lithium-Ion Battery Inverter-less System. This is one of the most efficient photovoltaic power backup system available in the market offering up to 40% lesser power consumption and 50% reduction in electricity bills. About 30-40% of the energy conversion loses can be reduced.

  • /
Label Date March 10, 2021
From India
Maturity stage Medium and large scale commercialization
Looking For New clients, Visibility

The environmental benefits

  • First DUAL input (solar and grid) and DUAL output (AC and DC output) Solar Backup System.
  • Uses 'Always ON' technology with a novel Brown-out Concept to provide uninterrupted power.
  • Reduction in GHG per day (10 hours of usage) by Inverterless unit, capacity of a single Inverterless unit is 7.2 kW, energy consumed from a Inverterless unit for 10 hrs 72kWh. PV system of 5 kWp generate 22.25kWh of energy per day. 18913 gGCO₂eq Reduction
  • Reduction in GHG due to energy efficient equipment:The AC energy for 72kWh of energy from Inverterless unit144KWh,Energy saved by Inverterless power solution (50% energy savings) 72KWh,Reduction of GHG gases from the saved energy 65520gCO₂eq.

The Financial benefits

  • Most efficient photovoltaic power backup system available in the market offering up to 40% lesser power consumption and 50% reduction in electricity bills.
  • The typical payback for a Inverterless System with built-in Li-Ion batter is less than 3 years, as against 5 years for the traditional AC based solar power back-up systems.
  • 30-40% of the energy loses can be avoided.

Activity Region

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  • Headquarters
  • Activity

Company Profile

Cygni Energy

At Cygni, we believe solar power can actually cost less than we pay now resulting in significant savings! CYGNI’s Inverterless Solar-DC solution offers an economical and affordable solution for off-grid/ near off-grid homes (homes with large power-cuts), and is also useful for grid-connected homes in saving power-bills as well as providing back-up power. This is achieved by Solar-DC INVERTERLESS technology, developed in collaboration with IIT Madras. Solar-DC Inverterless is an innovative technology that provides 48V DC to power DC appliances. With growing emphasis on energy conservation world over and with more DC appliances now becoming available, most homes in the world will gradually move to DC power. This is India’s opportunity to lead this “Go-DC” revolution.

View company profile Solution website
Headquarters 3507 Biglen, Switzerland

Networking Partner

Global Business Inroads

Global Business Inroads (GBI) is an international business, technology and innovation management consultancy, based in India, Europe, UK and USA that is specialized in technology access and deployment.

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The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. This information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances. The innovator Cygni Energy has asserted ownership of the intellectual property rights for images, videos, and content showcased above, affirming full and unrestricted usage rights, and has provided explicit permission for the Solar Impulse Foundation to publish such information designated as "public" in the application form.