It is well known that the convergence of renewable energy and battery storage would have transformational impacts on electricity markets. It overcomes the intermittancy problem that bedevils renewable generation. However, the high battery costs have been a problem.
But two recent news articles highlight why that may be a thing of the past. One, for the first time, battery storage costs have fallen below thermal. Estimates by think tank Ember suggests that the cost of battery packs used in grid-scale storage systems fell by 45 per cent last year alone.
This trend has been expedited by the geopolitical convulsions of recent times, with the surging demand from data centres and the oil and natural gas supply squeeze due to Iran war turbocharging it. In 2026, 40 per cent more large-scale batteries are estimated to be installed than in 2025.
Second, this convergence is being reflected in tenders being called in India to procure battery power.
Solar Energy Corporation of India (SECI) ran an auction to buy electricity capacity where they (SECI) demanded the availability of a thermal generator. A bidder who plans to use solar or wind is then forced to load up with the batteries required, to charge in the day, so as to deliver thermal-style availability. This auction discovered a price of ₹5.25 per kWh, guaranteed for 25 years. It is hard to identify a single comparable price for coal thermal in India because coal-extraction rights are given by the state in non-market ways. But if we look at recent new coal-power contracts in India, they are priced at ₹5.38-6.30 a unit. The SECI-discovered thermal-mimicking price for renewable power is now 10 per cent cheaper than that for new coal.
However, this convergence is accompanied by the now common concern about dependency on China.
Chinese producers account for 95 per cent of large-scale storage batteries, says Benchmark Mineral Intelligence. The sector’s rapid growth is strengthening China’s position as the dominant force in low-carbon energy, compounding opportunities for Chinese companies in adjacent markets such as wind and solar generation equipment… The seeds of China’s battery storage boom were sown in the years after Xi Jinping took power in 2012, with his pledge to build an “ecological civilisation”.
An industry in China that emerged from China’s industrial policy efforts to support battery production for EVs is now shifting towards grid storage.
By 2021, it had become clear to the Chinese state that a vast amount of renewable power was being wasted, with solar and wind plants often generating far more electricity than the grid could absorb. So it launched a strategic push to deploy battery storage on the grid at large scale. Across much of the country, developers were required to build or commission large-scale storage as a condition of approval for new wind and solar plants. Again CATL has been at the forefront of this effort. Its fastest-growing business line today is the production of cells for large-scale energy storage systems. The company accounted for 22 per cent of cell sales for these systems globally in the first half of the year, making it the market leader in China and abroad. As a result of the state’s drive, China’s battery storage capacity expanded from 2.4 gigawatts in 2020 to more than 140GW at the end of last year, according to the Energy Institute, an industry membership body. In the first half of this year, coal’s share of Chinese power generation fell below 50 per cent for the first time ever. Exports of China’s large-scale battery technology have also surged. Researchers at BloombergNEF estimate that new battery storage capacity of 84.6GW will be added outside China this year — 65 per cent higher than last year.
Understandably, the Western governments have been taking action to reduce the dependence on China.
In August, Trump authorised the energy department to block Chinese-linked battery storage equipment from the US grid on national security grounds. Washington has also revised the rules around tax credits for battery storage, in effect limiting the amount of Chinese equipment American companies can use. Some US officials say that Chinese-made storage equipment could potentially contain chips enabling it to be controlled or switched off remotely. Similar worries have emerged in the EU, where the authorities have moved to restrict public funding for storage projects using certain key components from “high-risk” countries including China… The US crackdown will force a growing reliance on kit made by alternative suppliers such as South Korea’s Samsung SDI and LG Energy Solution, whose storage batteries are significantly more expensive.
Buoyed by the success of the SECI auction in August that secured 1 GW of solar and storage capacity, the Government of India plans to emulate China and drive battery storage.
Chinese-made batteries are now being deployed en masse in the country, which in the first half of this year added seven times as much new power storage as it had in total at the end of 2025, according to energy research company Mercom India. Much of the rise comes from a single huge solar and storage project built by the Adani Group... The government is now planning regulation that would require storage to be installed alongside new solar and wind power plants — similar to the rules that drove China’s storage lift-off. Climate advocates hope this will reduce the country’s heavy reliance on coal, the most carbon-intensive fossil fuel.
However, India’s independent power producers have relied heavily on Chinese manufacturing capabilities to import commoditised thermal BTG equipment in the first decade of the millennium, and solar cells and wind turbines in the second decade. In both cases, the country missed the opportunity to leverage the massive demand to develop indigenous manufacturing capabilities.
In both industries - thermal and renewables - the biggest multi-sector corporate groups in India, with a great appetite for entering new industries, led the capacity addition. But instead of thinking long-term and seeing manufacturing as a vertical integration opportunity, they preferred the short-term and easy way of importing from China.
Another opportunity in power sector that is playing out right now is that of smart meters, where too the same corporate groups have been satisfied with importing Chinese meters and making the easy money by being contractors to install and maintain them.
The massive future demand for batteries presents a fourth opportunity in power sector itself over the last two decades for both the government and the same corporate groups to learn from their mistakes in thermal and solar generation and smart meters. Many large Indian corporate groups are already engaging in the battery energy storage systems (BESS) industry. The Adani group has already started work on the 30GW Khavda renewable energy park, one of the largest in the world.
These, as I have blogged here, are opportunities for an industrial policy that involves partnering with large domestic corporate groups to catalyse domestic manufacturing.
Only these groups have the heft to overcome the coordination problems, financing deep pockets, and risk-aversion to be able to manufacture at a scale that’s attractive enough to break away from the vice-like grip of Chinese manufacturers, and shift component manufacturing in India. Even with the most generous industrial policy and the favourable geopolitical tailwinds of diversifying out of China, there are hard limits to how much industrial policy and market dynamics on their own can go in relocating component makers from China… For countries like India, without any large domestic OEM and without the unique circumstances behind Apple’s engagement with China, local corporate groups may be valuable assets to succeed with the objective of deepening and broadening their manufacturing base.
In this context, there’s always the risk of crony capitalism. Already, there are strong trends of business concentration across sectors in the Indian economy, driven by the large corporate Groups. But this risk should not be an excuse to overlook the large body of evidence from across the world about the value of large domestic corporate groups in national economic growth.
Such engagement by the private corporate group would involve some very logical long-term bets. For one, the Indian market itself presents a great opportunity for huge growth, and therefore a strong case to forge strategic partnerships, acquisitions, technology licensing, and invest in R&D and innovation, to build domestic capabilities in battery manufacturing. Besides, this would be a bet not only on the large Indian market, but also the global market in an emerging technology where there is an acute scarcity of non-Chinese manufacturers.
Further, for these groups, grid-scale battery business has deep synergies with their existing businesses, thereby providing them important leverage in negotiations on joint ventures, technology licensing, and domestic manufacturing. This is important since Indian corporates have preferred to leverage the scale of their purchases for short-term pricing considerations when negotiating with their suppliers.
The Indian corporate groups must summon a long-term vision to both grow into an emerging frontier technology, and also invest in capabilities in R&D and innovation that allow movement up the value chain. They would have to formulate 4-7 year strategies for acquiring capabilities in battery chemistry, starting with the current system integration (or assembly) role to moving up the value chain from licensed to proprietary manufacturing. This would be taking a leaf out of what CATL, BYD, and Sungrow have done.
The government could provide a big boost by coupling battery and renewables in future power purchase agreements, thereby creating an effective advance purchase volume commitment (even if at competitively determined prices). The new version of the Production Linked Incentive (PLI) scheme should embrace the details outlined here (for smart meters) to encourage progressively increasing domestic value addition. It could use diplomacy to support this with securing access to the various chokehold inputs required for the industry.
But most importantly, a non-negotiable requirement for government support should be mandatory export competition from the outset to ensure that a globally competitive industry emerges in the country.
As strategy, it may be useful to bring all the fiscal and other support, including the likes of Viability Gap Funding (VGF) financing, under one umbrella so as to ensure efficient administration and ease of access by companies. This is an important enough agenda to merit such a dispensation. Further, the selected industry partners should be made to commit to medium-term action plans that are linked to simple and easily verifiable milestones and outcomes, and they should periodically report on them. All public policy support should be made contingent on realisation of these outcomes.



























