In this exclusive interaction with StartupTalky, Vasudha Madhavan, Founder & CEO of Ostara Advisors, talks about pioneering climate-tech investment banking in India. She shares how spotting a capital gap in clean mobility and sustainability led her to build Ostara—a platform connecting mission-driven founders with global investors. With over $125 million in climate capital facilitated, Madhavan discusses attracting f irst-time global investors, driving strategic M&A like Greaves Cotton’s acquisition of Ampere Vehicles, and identifying high-potential sectors such as EVs, energy storage, and industrial decarbonisation. She also highlights the role of India’s progressive climate policies, her vision for the next decade of green finance, and her experience as a woman leader reshaping specialized investment banking through purpose-driven innovation.
StartupTalky: Ostara pioneered climate-tech investment banking in India. What gaps did you see in the ecosystem in 2015 that led you to start the firm?
Ms. Madhavan: In 2015, I had started seeing a stark gap in the ecosystem. On the one hand, there was a clean mobility and climate-tech innovation wave with entrepreneurs creating world-changing solutions. On the other hand, access to capital and the appropriate advisory was severely lacking. Most generalist advisors were not familiar with the industry nuances of such businesses, and this meant that founders found it difficult to raise money, or to find the right investors.
The epiphany moment for me was 2017–2018 when I headed India’s first electric two-wheeler M&A transaction, Greaves Cotton’s buyout of Ampere Vehicles. It was an experience that underscored the opportunity in clean mobility as much as the staggering capital gap in the industry. It dawned on me that if climate-tech had to scale successfully, it had to have specialized investment banking expertise to bridge the gap between mission-led founders and international investors.
Ostara Advisors was born out of that conviction, with a mission to build a focused platform that channels capital into climate-tech and clean mobility companies, helping visionary founders scale sustainable innovation.
StartupTalky: With $125M in climate capital facilitated, what key factors have enabled Ostara to consistently attract first-time global investors to India?
Ms. Madhavan: At Ostara Advisors, three key drivers have aided us in successfully attracting first-time international investors to India.
First, our extensive technical expertise ensures that every business we showcase is investor-ready. We carry out thorough research, consult industry titans for specialised input, and ensure that our clients are due diligence compliant. Such a degree of readiness inspires confidence among international investors looking at Indian opportunities for the very first time.
Second, our focused global outreach is based on a solid international network across the US, Europe, Asia, and the Middle East. We screen investors whose mandates match particular sector trends, especially in climate-tech. By spending time shaping their perception of the Indian market and establishing a robust loop of feedback, we position ourselves more sharply and engage more intensely.
Finally, our model is based on relationships, which results in lasting value generation. We focus on developing partnerships, rather than completing one-off transactions. This approach ensures fair price discovery, alignment of stakeholder incentives, and efficient closing. As a result, first-time investors in the growing climate-tech industry in India feel very comfortable and confident.
StartupTalky: How do you see strategic M&A shaping the climate-tech ecosystem, especially in sectors like electric mobility and decarbonisation?
Ms. Madhavan: Strategic mergers and acquisitions are instrumental in accelerating climate-tech ecosystems and the adoption of new technologies. Globally, from 2021-2024, there have been over 750 climate-tech mergers and acquisitions worth greater than USD 170 billion. Electric mobility is one of the leading themes in climate-tech and decarbonisation is another.
In India, the Greaves Cotton-Ampere acquisition signifies a watershed moment. Following the acquisition of Ampere Vehicles in 2018, Greaves Cotton changed its business model from being a traditional auto components vendor to being an EV OEM in the new electric two-wheeler market which was rapidly evolving at that time. By FY2025 it is forecast that e- 2Ws will represent almost 58% of all EV sales in India, having experienced a steep growth curve due to acquisitions.
These acquisitions accelerate scale and distribution for startups, whilst at the same time help incumbents to future proof their portfolio, improve ESG credentials and directly contribute to decarbonisation through the subsequent uptake of clean technologies.
StartupTalky: Having closed landmark transactions such as Greaves Cotton’s acquisition of Ampere, what lessons stand out from these early climate-tech deals?
Lessons from Climate-Tech Deals
Ms. Madhavan: The landmark transactions such as Greaves Cotton’s acquisition of Ampere Vehicles (EV two-wheeler pioneer) and leading Corporate Mobility platform, Routematic’s $40m Series C fund-raise highlighted several critical lessons for building India’s climate-tech ecosystem.
They proved that traditional industries can embrace clean technologies to reduce their carbon footprint, validating climate-tech as both viable and investable. Traditional ICE mobility sectors, such as the employee mobility market, can become transformational opportunities for EV adoption – as well as AI-driven mobility can be a powerful catalyst for resource efficiency on crowded Indian roads.
These deals also showed the importance of crafting strong narratives and providing data-driven insights to bridge investor trust gaps in a nascent sector. They underscored the need for persistent market education through reports, newsletters, and industry dialogues to establish credibility. Finally, they demonstrated that precise execution and clear founder positioning not only unlock capital but also set benchmarks that catalyze broader investor participation and sustained inflows into climate-tech.
StartupTalky: Climate-tech startups often require longer gestation periods. What strategies do you recommend for founders to stay investment-ready through this journey?
Ms. Madhavan: To stay in investment readiness with prolonged gestation periods, climate-tech founders need to focus on the following:
- Unit Economics Discipline: Have early signs of margins and cost savings tracked and reported, with a path to profitability as volumes increase.
- Adaptive GTM Strategy: Continuously improve the go-to-market strategy based on insights around segmentation, acquisition efficiency, and conversion.
- Strong Finance Function: Invest in an efficient forecasting, reporting and compliance function that demonstrates financial readiness and transparency.
- Operational Agility: Build lean, tech-enabled operations that can scale, with processes in place that ensure quality and margin.
- Data-Driven Story Telling: Use quantifiable milestones and KPIs in all functions to regularly signal strength of execution that builds investor confidence.
StartupTalky: Which climate-tech sub-sectors in India—such as EVs, energy storage, or carbon management—do you see offering the most attractive opportunities today?
Ms. Madhavan: In India, the most attractive opportunities today are emerging in a few high-impact climate-tech sub-sectors. Electric mobility is scaling rapidly, and smart energy management platforms are critical for balancing grid demand and optimizing charging infrastructure. Battery storage is another priority area, as it underpins both renewable integration and reliable EV adoption.
Industrial decarbonization is also gaining strong traction, with technologies like green hydrogen and green cement moving from pilot to scale. Circular economy models are transforming waste into valuable resources, while biofuels are beginning to replace fossil fuels in industrial use.
What excites me is that this momentum cuts across mobility, energy, and materials, with companies scaling faster than ever. The growth-stage funding gap remains a challenge, but the underlying opportunity is clear. These sub-sectors align closely with India’s climate goals and infrastructure priorities, making them highly investable today.
StartupTalky: How is the current policy and regulatory environment (such as FAME incentives, EV policies, or carbon frameworks) influencing investor interest in climate-tech?
Ms. Madhavan: Impact of India’s Regulatory and Policy Environment on Climate-Tech Investment
India’s 2025 policy and regulatory environment is also driving climate-tech investment strongly. The FAME-II program, which has offered INR 11,500 crore of support, has driven the uptake of more than 16 lakh electric vehicles, 5,100 e-buses, and 7,400 charging points. Complementary schemes like the Production Linked Incentive (PLI) for automobile and battery production, PM E-DRIVE, and PM e-Bus Sewa are supporting local manufacturing, increasing infrastructure, and promoting adoption, reducing entry costs and driving high growth in the EV and climate-tech space.
The Draft Climate Finance Taxonomy and the new compliance carbon market standardize ESG screening, lower greenwashing risk, and open up new asset classes in carbon avoidance and related digital solutions. GST incentives, including a 5 percent rate on electric vehicles, further enhance cost competitiveness and investor returns.
India has drawn more than $2 billion in climate-oriented investments in 2024, with top investors shifting from pilot scales to strategic bets in energy, transportation, waste, and cooling industries. International institutions like the European Investment Bank, IFC, and Temasek are actively facilitating this shift. In the next two to three years, India’s climate finance is likely to concentrate on scalable solutions that could drive the clean shift at scale.
StartupTalky: Looking ahead, how do you expect India’s climate-tech investment landscape to evolve over the next 5–10 years?
Ms. Madhavan: India’s climate-tech industry is positioned to grow rapidly over the next 5 to 10 years and will move well beyond electric mobility. And there is a large investment opportunity as the $27 billion per year financing gap to net-zero will be closed. Renewable energy integration, including load shifting and battery storage, will support grid stability and energy utilization. Funding will flow into the industrial and construction space into biofuels, including compressed bio-gas, green hydrogen, carbon-efficient cement, and other sustainable materials. Circular economy solutions, including recycling of batteries and biofuels, will further scale as companies try to reduce waste and emissions. Carbon capture and utilization will allow opportunities to embed CO₂ into concrete, fuels, and other products. In summary, the climate-tech ecosystem in India is poised for a large upswing in investment in energy, industrial, and environmental technology, with financial outcomes and tangible outcomes for the environment.
StartupTalky: For international investors exploring India’s climate-tech ecosystem, what are the key factors they should keep in mind before deploying capital?
Ms. Madhavan: First and foremost, India represents an enormous market opportunity. Aiming to contribute nearly one-fifth of its GDP by 2030, the country’s digital economy faces strong demand for climate-tech solutions in both the energy, mobility, and industrial space due to the growing sustainability agenda. The intersection of digital progress and green transition represents a significant investment opportunity.
- Equally important is India’s talent advantage. With more than 370 million youth, and the largest STEM graduate pool, with more than 2 million new graduates each year, India represents both skill and scalability. This level of technical talent allows for the development and deployment of climate-tech innovation efficiently and at a global standard.
- From a policy standpoint, India offers a favorable investment climate and mitigates investment risk. The government is spearheading initiatives such as the Production Linked Incentive (PLI) schemes, which collectively exceed $2 billion in funding, the Critical Minerals Mission, and various deep-tech startup policies, which are encouraging innovation in the renewable energy, circular economy, and decarbonisation sectors.
- Finally, as capital from the rest of the world begins to flow into climate-tech, investors will need to sift through levels of hype and amounts of actual innovation. The best way to do this is to find startups that have a clear way to differentiate their technology, a validated financial track record, and a certification of measurable climate impacts–assessable through a rigorous process of technical due diligence, product demos, and comparative evidence against peers in India and others global peers.
StartupTalky: As a woman entrepreneur leading in a highly specialised financial domain, what has your journey been like, and what advice would you share with aspiring women in climate finance?
Ms. Madhavan: My journey as a woman entrepreneur in climate finance has been both challenging and rewarding. Being a newcomer in a specialized, male-dominated industry has meant working harder to establish credibility, but belief in the need for targeted capital advisory in the climate-tech space kept me pushing forward. Growing Ostara Advisors has been about demonstrating that both deep experience and your purpose can fill a critical gap in the ecosystem.
The highlight has been getting to work with amazing women leaders like Hemalatha Annamalai from Ampere Vehicles and Kavitha Ramachandragowda from Routematic who are shaping the story of sustainable innovation in India. At Ostara, I am proud that we have built a women-majority team, showing that diversity is a strength even in specialised finance.
My encouragement to prospective women in climate finance is to carry yourself with belief and preparation. Develop deep expertise, find networks and mentors, and call out bias when it happens to you. Your point of view counts and can often offer a different or more effective outcome, as that just might lead to better and more equitable solutions. Surround yourself with the ways to grow and a supporting network and be bold about doing so. I try to pay this forward through mentoring young women in this space through Aspire For Her and encourage them to lead with confidence.