India stands at a pivotal juncture in its ambitious clean energy transition, having rapidly expanded its renewable generation capacity to become a global leader in solar deployment. However, the impressive strides in gigawatt additions are now confronting a fundamental challenge: the existing transmission infrastructure and the absence of large-scale energy storage solutions are becoming critical bottlenecks, threatening to impede the nation’s journey towards a reliable, green power system. Experts and industry leaders, at a recent high-level forum in Mumbai, underscored that the subsequent phase of this transformation will not merely be measured by raw generation figures but by the seamless integration of green power into the national grid and its dependable delivery to consumers.
The sheer scale of India’s renewable energy growth is remarkable. With an installed non-fossil capacity targeting 500 GW by 2030, including an estimated 300 GW from solar alone, the country’s current installed renewable energy base already exceeds 288 GW, with solar contributing a significant 162 GW. This expansion has driven down renewable energy tariffs, making them increasingly competitive, often cheaper than conventional power sources. Yet, this rapid proliferation of intermittent solar and wind power exposes systemic vulnerabilities. Madhav Pai, CEO of WRI India, highlighted a looming deficit: "The grid is clearly going to lag 40-50 GW behind what we generate." This significant gap between generation potential and transmission capability leads to several operational and economic inefficiencies, including the curtailment of green power, where electricity produced cannot be transmitted or consumed.
The consequences of this transmission lag are already manifesting in the market. Over the past two years, instances of power prices falling to zero or near-zero on power exchanges have become more frequent, particularly during periods of high solar generation relative to market demand. This phenomenon forces power distribution companies (Discoms) to offload surplus green power at prices well below their procurement costs, which typically range upwards of ₹2 per unit for renewable power and over ₹3 per unit for firm and dispatchable renewable energy (FDRE) projects. Such practices exacerbate the financial strain on already indebted Discoms, undermining the economic viability of renewable projects and creating disincentives for further investment in a sector vital for the nation’s climate goals. Pai advocates for greater transparency regarding delays in transmission capacity additions, arguing that making this information more visible can "get the right attention to accelerate it" and address the critical 40-50 GW generation-transmission gap.
Beyond transmission, energy storage emerges as the twin pillar of a stable green grid. As Deepak Thakur, Managing Director and CEO of Hinduja Renewables, articulated, India is transitioning from "building renewable energy assets to building a dependable energy system." The focus is shifting from raw gigawatts to the ability to deliver power precisely when customers need it, necessitating integrated portfolios that combine generation, storage, forecasting, and robust transmission. Investors are also recalibrating their strategies, now scrutinizing not just generation capacity but also project evacuation, storage integration, operational capabilities, and long-term reliability. The demand for "round-the-clock" power, particularly from energy-intensive sectors like data centers, is driving this shift, as are Discoms seeking reliable supply during peak demand periods.
Energy storage solutions come in various forms, from large-scale grid-connected battery energy storage systems (BESS) and pumped-hydro storage to "behind-the-meter" installations. Pai estimates that behind-the-meter battery storage, deployed at consumer premises such as those benefiting from the PM Surya Ghar scheme or by commercial and industrial (C&I) users, could contribute up to 20% of the country’s required battery energy capacity. This distributed approach not only enhances grid resilience but also empowers consumers and reduces the load on central infrastructure. Digital transformation, Pai adds, is crucial for optimizing these distributed energy resources. However, the integration of such advanced solutions comes with added costs. Thakur suggests that these costs will ultimately need to be borne by customers, necessitating the development of robust market platforms and regulatory frameworks to support the widespread adoption of storage technologies and ensure fair compensation for these added capabilities.
The discourse extends beyond the electricity sector into the broader industrial landscape, where green molecules are poised to revolutionize energy consumption and production. Derek M. Shah, MD & CEO of L&T Greentech, emphasized that the energy transition is not confined to power generation but is actively reshaping chemical industries, oil and gas, fertilizers, mobility, and steel. Efforts are already underway to replace conventional feedstocks like grey hydrogen and natural gas with green hydrogen and green ammonia. Oil marketing companies are initiating tenders for green hydrogen, while the Solar Energy Corporation of India Ltd (SECIL) has launched tenders for green ammonia, and the government plans for green methanol tenders to decarbonize the shipping industry. These green molecules are entirely dependent on renewable energy for their production, creating a synergistic demand loop.
While concerns about the initial cost of green hydrogen and other green molecules are prevalent, Shah posits that these projects, designed for long-term supply periods, are inherently viable. He predicts that within four to five years, green molecules will become economically more attractive than their fossil-fuel-derived counterparts. To foster domestic industry growth, Shah advocates for norms mandating the use of indigenously developed electrolysers, crucial for green hydrogen production. Thakur reinforces the need for sustained government support to achieve commercial viability for nascent green molecule industries. He also highlights the importance of aligning regulatory mechanisms with renewable power obligations (RPOs) to stimulate demand, which, in turn, will drive mass-scale production and lead to price reductions.
India’s journey towards a net-zero future by 2070 is an intricate tapestry of technological innovation, policy reform, and significant investment. The shift in investor perspectives towards integrated portfolios, which prioritize long-term reliability and operational capability alongside generation capacity, reflects a maturing market. The economic impact of addressing these infrastructure gaps is profound: it promises not only enhanced energy security and a cleaner environment but also significant job creation, the growth of a robust domestic manufacturing base for advanced energy technologies like electrolysers and batteries, and a more resilient national economy. The challenge for India’s energy future, therefore, is not merely about generating more green power, but about meticulously constructing the arteries and reservoirs – the transmission networks and storage facilities – that will ensure this vital energy flows dependably and efficiently across every facet of the nation’s burgeoning economy.
