How Reslink is powering India’s clean future
New Delhi-based Reslink is building smart solar inverters and energy storage systems for residential and commercial use, and is also working to reduce India’s reliance on China for renewable energy products.
During his freshman year at IIT Delhi, Shashank Jha attended a talk in a nearly empty 1,000-seat hall—he was one of only five people there. The guest lecturer casually mentioned quitting their job at Google in California because they were getting ‘too comfortable’.
That remark struck a chord with Jha. Shortly after graduating in 2023, he started Reslink, a New Delhi-based greentech company.
“The name is drawn from ‘Researcher’s link to the world’—Reslink, in short,” Jha says.
The company provides end-to-end hybrid solar solutions for residential and commercial use.
“We are a research-heavy company that aims to make smart and efficient renewable energy sources accessible to the public. We do this by creating AI-enabled storage facilities to stabilise the grid by working closely with IPPs (Independent Power Producers) and EPCs (Engineering, Procurement, and Construction) firms,” says Jha.
The founding team consists of Jha, and Co-founder and CTO Kalyan Tarafdar, among others. It consists of a 10-member team operating out of Hauz Khas in South Delhi with lab facilities. The startup is part of the Indian government’s Design Linked Incentive Scheme.
From R&D service to building products
Reslink initially began as an R&D-on-demand company, helping other startups build their tech. However, the team soon realised that this model wasn’t sustainable in the long run.
“Many companies would raise Rs 20 crore and announce that 30% of it is going to R&D. They would only pay us around Rs 2 lakh to make their entire technological base,” says Jha .
Reslink neither got the IP nor any royalties from the product, and the business model no longer appealed to the founders.
Jha believes that the Indian startup ecosystem is heavily focused on trade and not on research. So, instead of waiting for clients, Reslink pivoted to become a research-first company.
“So now, we create the technologies, as many as we have to. We enable researchers, and if we have to partner with someone, we find the right person.”
Reslink still runs its service arm, Reslink Lab, an R&D service that has helped over 30 startups develop technology and hardware. It has also built a network of about 3,000 researchers.
Product and services
Reslink’s flagship products include AI-enabled solar inverters (on-grid and hybrid) and energy storage systems.
Solar inverters can be on-grid (grid referring to electric power grid—main supply), off-grid, and hybrid (a combination of both).
“An on-grid inverter sends solar power directly to the electricity grid, from which you then draw power. An off-grid system skips the grid entirely, supplying solar energy straight to your home or facility. A hybrid inverter can do both—either feed solar power into the grid or store it in a battery system for later use,” Jha explains.
“Our goal is to stabilise the grid and support independent power producers (IPPs) in setting up large-scale, standalone energy storage solutions.” He adds that artificial intelligence (AI) is making these systems increasingly intelligent and efficient.
On-grid inverters cost between Rs 39,999 and Rs 1,52,000 (excluding GST); hybrid inverters are priced between Rs 39,999 and Rs 92,000. These products are primarily for B2C customers.
For B2B clients, Reslink offers Mega packs—large energy storage systems priced at Rs 9,75,000.
However, the Energy Storage Systems (ESS) and Battery Energy Storage Systems (BESS) haven’t been launched in the market. They have been soft-launched to 15 select clients.
Reslink plans to add about 300 members in its total clientele (B2B and B2C) by the end of this year. The startup is primarily looking to work with hospitals, cold chains, schools, and manufacturing units. The startup also conducts regular checks to monitor product condition and to incorporate any new innovations or updates.
According to the team, their systems deliver 30% higher efficiency compared to the market average. They are also building systems for peer-to-peer (P2P) Energy trading.
In addition, Reslink is developing L3 EV fast charging stations with a capacity of 250-400KW that charge vehicles in just 30 minutes compared to the standard eight-hour charge.
However, these L3 chargers cost about Rs 50 lakh. To make them more accessible, Reslink offers them on a rental basis, usually shared by a group of people, at an undisclosed subsidised rate.
Initially, the company struggled with energy data. As it didn’t have any control over it, it had to first build a data capture mechanism first—a hardware which collects data from its BESS.
“Other than this, operationally, trusting vendors is difficult. We had to build a lot of SOPs and quality checks to make sure solar installation is done well, and would stand for 10-15 years,” says Jha.
Reducing Chinese dependency
Reslink aims to reduce India’s coal dependency and accelerate the process of switching to renewable energy.
According to the Rubix Industry Insights – 2025 Renewable Energy report, India imported a whopping 93% of its PV cells and 94% of its modules from China. While that number has dropped to about 68% and 59%, respectively, in early FY25, China still dominates the renewable energy (RE) market in India. This also means that China controls most of our RE sources.
“Every country has a killswitch—a digital or physical mechanism to shut down a system. So, if on one fine day they want to shut down our entire RE system, they can easily do it. This threat is grave. The larger reason we are working on storage systems is to eventually reach a point where this dependency on a foreign country dissipates,” Jha emphasises.
Reslink takes inspiration from Tesla Energy and China’s BYD. In India, the startup competes with Pune-based AmpereHour Energy. However, Reslink stands out for its AI-enabled products that are trained and optimised for Indian climate and grid.
The road ahead
Bootstrapped with Rs 2.5 lakh and additional funding of Rs 1 crore in a seed round led by Chandigarh Angels Network and IIMA Ventures in 2023, Reslink made an annual revenue of Rs 80 lakh in FY25.
“We are planning to raise about $10 million in a Series A round by the end of this year. We are also targeting an annual revenue of Rs 10 crore,” Jha says.
The startup is planning to expand operations to cyclone-prone areas like Mumbai, the Southern belt near Chennai, Gujarat, Rajasthan, and Odisha. “We will also be launching in the Middle East in the next few months,” he says.
Investor Azhar Iqubal, Co-founder and Chairman, Inshorts, says, “It was clear that they (Reslink) are the kind of people who don’t give up easily; a rare quality in today’s world. I’ve always believed that strategy, business models, and growth paths can be figured out along the way. What truly matters is the mindset,” says Iqubal.
Edited by Megha Reddy