Solar-Hydrogen Rooftop Cooking & Heating System

“My Rooftop, My Energy”

A Sustainable Pathway Towards Energy Independence in India

India’s renewable energy push has created unprecedented opportunities for decentralized energy solutions. While rooftop solar adoption has accelerated, the challenge of excess daytime power and grid instability persists. Traditional solutions like net metering and battery storage have limitations in efficiency, safety, and cost.

Garv Industries Pvt. Ltd., in collaboration with international advisors and guidance from Dr. S. P. Sharma (Ex-GM NTPC, IIT Roorkee alumnus)is pioneering a Solar-Hydrogen Rooftop Cooking & Heating System –an innovation that directly converts rooftop solar energy into hydrogen for safe on-site storage and usage. This not only addresses surplus power management but also reduces dependency on fossil fuels like LPG and CNG.

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Problem Statement

• Excess Solar Generation : Rooftop solar often produces energy when household demand is low, causing grid backdowns and instability.

• Dependence on Fossil Fuels : Urban and rural households rely heavily on LPG and firewood for cooking, leading to high costs, CO₂ emissions, and logistical challenges.

• Energy Transport Losses : Conventional centralized models result in transmission inefficiencies.

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Solution Overview

The proposed Solar-Hydrogen Rooftop System integrates:

☀️ Solar Panels → ⚡ Electrolyzer → 🔋 Hydrogen Storage → 🔗 Distribution → 🔥 Cooking & Heating.

• ⚡ 5 kW Solar DC (48V) → Converter

• 🔬 PEM Electrolyzer (70% efficiency)

• 🔋 H₂ Composite Storage (350 bar / ~5000 psi)

• 🛡️ Safety System: Regulator + Flame Arrestors

• 🔥 End Use: Modified Burners + Flame Sensors

• Solar Panels : Capture rooftop energy.

• Electrolyzer : Splits water into hydrogen and oxygen using solar power.

• Hydrogen Storage : Safe, high-pressure tanks with global-standard safety features.

• Cooking & Heating Devices : Modified burners and heaters designed for hydrogen combustion with high thermal efficiency.

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Innovation & Differentiation

• First-of-its-kind domestic rooftop hydrogen utilization system in India.

• Higher end-use efficiency compared to grid export or battery storage.

• Zero transport cost for energy – produced and consumed at the same site.

• Safety-first design with globally referenced hydrogen storage standards.

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Implementation & Architecture

• Rooftop solar panel feeds power to electrolyzer.

• Electrolyzer generates hydrogen, stored in composite cylinders (tested technologies available at NTPC/CBIP trials under Sharma’s supervision).

• Hydrogen is piped to kitchen/heating appliances with flame-stability technology.

• Optional integration with hybrid systems (solar-electric cooking or backup LPG).

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Impact & Benefits

Quantitative

• 1 kg of hydrogen replaces ~2.7 LPG cylinders (19kg each), saving households ₹1,500–2,000/month.

• Reduces 2 tons of CO₂ annually per household.

• At scale (1 million households), potential savings of ₹10,800 Cr annually in LPG imports.

Qualitative

• Energy independence at the household level.

• Cleaner indoor air, reduced firewood dependence in rural areas.

• “Green job” creation in installation, maintenance, and safety monitoring.

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Strategic Partnerships

Through technical validation supported by Dr. S. P. Sharma’s extensive research in hydrogen storage and renewable energy applications and an MoU with ID Advisors LLC (USA) Garv Industries is building:

• R&D collaboration in hydrogen safety and efficiency.

• International alliances for technology validation.

• Market access in regions facing similar grid-balancing and cooking fuel challenges.

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Conclusion

The Solar-Hydrogen Rooftop Cooking & Heating System represents a game-changing decentralized energy model for India. By transforming surplus solar into hydrogen for daily use, it reduces fossil fuel dependence, enhances grid stability and promotes household-level sustainability.

Backed by the thought leadership of Dr. S. P. Sharma, a pioneer in hydrogen energy, this initiative is not just a technology-but a decisive step towards realizing Atmanirbhar Bharat in Energy.