India has enough sunlight to power its future many times over. A new study by the National Institute of Solar Energy (NISE) estimates that the country can generate 3,343 GWp of solar power from just 27,571 sq km of wasteland — more than eight times its current installed capacity. With Rajasthan, Maharashtra, Andhra Pradesh, and Gujarat leading the way, this report highlights how solar potential extends far beyond deserts, unlocking new opportunities for jobs, investment, and India’s clean energy transition.
India’s dream of becoming a renewable energy powerhouse just received a big boost. A new study by the National Institute of Solar Energy (NISE) has revealed that the country has the potential to generate over 3,343 gigawatts (GWp) of electricity through ground-mounted solar projects. What’s more striking is that this potential can be harnessed using only a fraction of the country’s wasteland — about 27,571 square kilometres, or less than 7% of total wasteland available.
This fresh estimate is a sharp rise from NISE’s earlier 2014 assessment, which had pegged the potential at about 749 GWp. The jump reflects advances in solar technology, better geospatial mapping, and a more refined understanding of land and resource use.
NISE, an autonomous institute under the Ministry of New and Renewable Energy (MNRE), carried out a detailed analysis using advanced geospatial datasets. Unlike the earlier study, which relied heavily on broad assumptions, the new report factors in crucial development constraints. These include:
-
Terrain (slope and aspect of land)
-
Land use and sustainability concerns
-
Solar irradiance (amount of sunlight received)
-
Proximity to roads and electricity substations
By applying these filters, the study ensures that the identified potential is both feasible and practical, not just theoretical. Importantly, it also capped solar deployment at no more than 10% of wasteland in any given state, ensuring sustainable land use.
The numbers: Where the potential lies
The report reveals that Western India alone accounts for nearly half (45%) of the total potential. The region benefits from vast stretches of barren land and some of the highest solar radiation in the country.
Here are the leading states with the highest feasible capacity:
-
Rajasthan – 828.78 GWp
-
Maharashtra – 486.68 GWp
-
Madhya Pradesh – 318.97 GWp
-
Andhra Pradesh – 299.31 GWp
-
Gujarat – 243.22 GWp
Southern states also contribute significantly. Andhra Pradesh, Karnataka (223.28 GWp), Tamil Nadu (204.77 GWp), and Telangana (140.45 GWp) together add up a large share despite having less wasteland than Rajasthan or Maharashtra. Their strength lies in favourable solar geometry, high irradiation levels, and efficient land use.
On the other hand, Northeastern and Himalayan states such as Nagaland, Mizoram, Arunachal Pradesh, and Uttarakhand have much lower potential due to rugged terrain, dense forests, and scattered wastelands that are harder to access.
India has come a long way in solar adoption. Back in 2014, the country had just 2.82 GW of installed solar capacity. Fast forward to January 2025, and solar installations have crossed the 100 GW milestone.
This transformation has been driven by falling solar panel costs, rising efficiencies, supportive policies, and a growing domestic manufacturing base. Today, India has built over 100 GW of annual solar PV module manufacturing capacity and nearly 20 GW per year in wind turbine capacity, with about 80% of the wind sector now indigenised.
One of the most important insights from the NISE study is that solar potential is not limited to deserts like Rajasthan and Gujarat. States such as Maharashtra, Andhra Pradesh, Karnataka, and Tamil Nadu also have massive untapped potential.
For example, Maharashtra alone has the capacity to add nearly 487 GWp, while Andhra Pradesh can add 299 GWp. This diversification means that India’s solar growth can be spread across regions, bringing economic opportunities, jobs, and investment to multiple states.
What this means for India’s energy future
To put things in perspective, India’s entire installed power capacity from all sources combined is far less than the 3,343 GWp solar potential identified in this report. In other words, the sunlight falling on India’s wastelands could generate over eight times the country’s current power capacity.
This aligns well with India’s commitment to achieve 500 GW of non-fossil fuel capacity by 2030. With 100 GW of solar already installed and new opportunities identified, the country is well on track to scale up its renewable ambitions.
The minister for renewable energy, while commenting on the report, highlighted that improved technology and reduced costs are game changers. Unlike the earlier methodology, which assumed just 3% of wasteland could be used, the new study leverages real-world data and acknowledges the rapid advances in photovoltaic efficiency.
The road ahead
The findings open doors for both policymakers and investors. With clear mapping of where solar projects can be most effective, states can now plan targeted policies and infrastructure support. It also underlines the importance of continuing to build a robust domestic solar industry, capable of meeting large-scale demand without relying on imports.
At the same time, the report stresses the need for balanced land use. Solar expansion must respect ecological and social factors, ensuring that renewable energy growth goes hand in hand with sustainable development.
Read more:
From waste to watts: Why bio-energy could spark the next energy revolution in India
India’s strategic bet on alternative battery technologies and energy security
FAQs:
What is India’s total solar energy potential according to the latest NISE report?
India has an estimated 3,343 GWp of ground-mounted solar potential, mapped from 27,571 sq km of wasteland across the country.
Which state in India has the highest solar energy potential?
Rajasthan tops the list with 828 GWp, followed by Maharashtra (486 GWp), Madhya Pradesh (318 GWp), Andhra Pradesh (299 GWp), and Gujarat (243 GWp).
How much solar capacity has India installed so far?
As of January 2025, India has crossed 100 GW of installed solar capacity, up from just 2.8 GW in 2014.
How does India’s solar potential compare to its renewable energy targets?
The 3,343 GWp potential is more than 8 times India’s current total power capacity and a strong base to achieve the 500 GW non-fossil fuel capacity target by 2030.
Why is solar potential not limited to deserts like Rajasthan and Gujarat?
The NISE report shows that several southern states — like Andhra Pradesh, Karnataka, Tamil Nadu, and Telangana — also have high potential due to good solar irradiance, efficient land use, and proximity to infrastructure.
