Green Energy Corridor Phase-III: India’s 135 GW Renewable Energy Grid, Battery Storage and Energy Transition

The Union Cabinet approved the Green Energy Corridor Phase-III (GEC-III) on 30 September 2026. The scheme aims to strengthen India’s intra-state electricity transmission network so that up to 135 GW of renewable energy can be evacuated and integrated into the national power system.

The scheme has a total outlay of ₹1,86,405 crore, including ₹1,36,378 crore for intra-state transmission systems and ₹50,000 crore for 50 GWh of Battery Energy Storage Systems (BESS). The Central Financial Support under the scheme will be ₹54,082 crore. The scheme is targeted for implementation by FY 2032–33.

For UPSC aspirants, GEC-III is much more than a power-sector scheme. It connects with:

Renewable Energy → Electricity Transmission → Battery Storage → Grid Stability → Energy Security → Climate Change → India’s 2030 Targets → Green Transition

Why Is Green Energy Corridor Phase-III in News?

The Union Cabinet has approved Green Energy Corridor Phase-III (GEC-III) to expand and strengthen India’s intra-state transmission infrastructure.

The major objective is to ensure that electricity generated from renewable sources such as solar and wind can reach consumers efficiently.

The scheme will support:

• evacuation of up to 135 GW renewable energy;
• 50 GWh Battery Energy Storage Systems;
• strengthening of intra-state transmission networks;
• reduction of renewable-energy curtailment;
• improvement in grid flexibility;
• integration of renewable energy into the electricity grid;
• long-term energy security.

The scheme is expected to contribute to India’s long-term goal of integrating 900 GW of installed non-fossil-fuel capacity by 2035.

First Understand: What Is a Green Energy Corridor?

Before understanding GEC-III, we need to understand the basic problem.

India is rapidly increasing its renewable-energy capacity.

Solar and wind projects are often located in areas where:

• sunlight is abundant;
• wind conditions are favourable;
• large land parcels are available.

However, these renewable-energy-rich regions are not always close to major electricity-consuming centres.

This creates a basic problem:

Electricity may be generated, but without adequate transmission infrastructure, it cannot be efficiently delivered to consumers.

A Green Energy Corridor (GEC) is designed to address this problem.

Simple Definition

Green Energy Corridor is a dedicated transmission infrastructure system designed to evacuate and integrate electricity generated from renewable-energy sources into the power grid.

In simple words:

Renewable Energy Generation → Transmission Network → Power Grid → Consumers

The transmission network is the bridge between renewable-energy generation and electricity consumption.

Why Does India Need a Green Energy Corridor?

India’s renewable-energy capacity has expanded rapidly.

As of 31 August 2026, India’s total installed renewable-energy capacity stood at about 295.55 GW, while total installed non-fossil capacity, including large hydro and nuclear, was about 304.33 GW according to MNRE data. Solar alone stood at around 168.04 GW, while wind capacity was around 58.52 GW.

This creates a new challenge.

The problem is no longer only:

“How do we generate renewable electricity?”

It is increasingly:

“How do we transmit, store and integrate large quantities of renewable electricity reliably?”

This is why transmission infrastructure and energy storage have become critical components of India’s energy transition.

The Renewable Energy Problem: Generation Is Not Enough

Suppose a solar park produces a large amount of electricity during the afternoon.

At that time:

Solar generation ↑

But electricity demand may not rise by the same amount.

Later, in the evening:

Solar generation ↓

while:

Electricity demand ↑

This creates a mismatch between generation and demand.

Wind power has a similar issue because wind speeds are variable.

This phenomenon is known as intermittency.

What Is Renewable Energy Intermittency?

Simple Meaning

Intermittency means that renewable-energy generation from sources such as solar and wind is variable and cannot always be produced continuously according to demand.

For example:

Solar power

High generation → Daytime

Low/zero generation → Night

Wind power

Generation varies according to wind conditions.

Therefore, a renewable-heavy electricity system needs:

• stronger transmission;
• flexible generation;
• energy storage;
• better forecasting;
• smart-grid technologies;
• demand management.

GEC-III addresses several of these challenges through transmission expansion and battery storage.

What Is Power Evacuation?

The term power evacuation is very important for UPSC.

It does not mean removing electricity from the country.

It means:

Moving electricity generated at a power plant through transmission infrastructure to the wider electricity grid.

For example:

Solar Park → Substation → Transmission Line → Grid → Distribution Network → Consumer

If adequate transmission capacity is unavailable, electricity generation may have to be reduced even when the plant is technically capable of producing power.

This is called curtailment.

What Is Renewable Energy Curtailment?

Curtailment means reducing or stopping available electricity generation because the electricity system cannot absorb or transmit all the power being generated.

This may happen because of:

• insufficient transmission capacity;
• grid congestion;
• low demand;
• system-security requirements;
• lack of storage.

Therefore:

More renewable generation without adequate transmission and storage does not automatically mean more usable renewable electricity.

This is one of the central reasons behind GEC-III.

Green Energy Corridor: Evolution

The Green Energy Corridor programme originated from the need to develop dedicated transmission infrastructure for large-scale renewable-energy projects.

A study by Power Grid Corporation of India Limited (PGCIL) in 2012 identified inadequate transmission infrastructure near several potential renewable-energy locations. Based on the study, States prepared transmission plans, which were subsequently appraised by the Central Electricity Authority. Implementation began in 2015 after the required approvals.

The programme has subsequently evolved through different phases.

GEC Phase-I

The first phase focused on developing transmission infrastructure required to integrate renewable-energy generation into the grid.

The larger objective was to create transmission capacity in renewable-energy-rich States and facilitate the movement of renewable electricity.

The programme established the foundation for India’s renewable-energy transmission architecture.

GEC Phase-II

The second phase strengthened the intra-state transmission system.

According to MNRE, GEC-II is being implemented in:

• Gujarat
• Himachal Pradesh
• Karnataka
• Kerala
• Rajasthan
• Tamil Nadu
• Uttar Pradesh

The scheme envisages approximately:

• 10,750 circuit kilometres of transmission lines
• 27,500 MVA of substations
• integration of approximately 20 GW of renewable generation capacity

The total project cost is about ₹12,031.33 crore, with Central Financial Assistance of around ₹3,970.34 crore.

GEC Phase-III: The New Development

The latest phase takes the programme to a much larger scale.

GEC-III at a Glance

Why Is 135 GW Important?

The number 135 GW is one of the most important Prelims facts from this current affair.

GEC-III is designed to enable the evacuation of up to:

135 GW of Renewable Energy

This does not mean that the scheme itself will generate 135 GW.

Rather:

It will provide the transmission infrastructure required to evacuate and integrate renewable electricity generated by renewable-energy projects.

This distinction is extremely important.

Common Confusion

Incorrect:

“GEC-III will generate 135 GW of renewable energy.”

Correct:

“GEC-III will enable evacuation and integration of up to 135 GW of renewable energy.”

What Is Intra-State Transmission?

This is another important technical term.

Intra-State

Within a State.

Therefore, an intra-state transmission system carries electricity within the boundaries of a State.

For example:

Solar/Wind Project → State Transmission Network → State Grid → Distribution System

GEC-III specifically focuses on strengthening this intra-state transmission infrastructure.

Intra-State vs Inter-State Transmission

UPSC Tip

Do not treat the entire Green Energy Corridor as simply an “inter-state transmission project.”

The GEC-III scheme approved in September 2026 specifically strengthens intra-state transmission systems.

Why Is Battery Storage Included in GEC-III?

This is perhaps the most important conceptual feature of the new phase.

GEC-III is not merely a transmission scheme.

It also includes:

50 GWh of Battery Energy Storage Systems

The storage component has an allocation of approximately ₹50,000 crore.

Why?

Because electricity generation and electricity demand do not always occur at the same time.

Storage helps bridge this gap.

What Is Battery Energy Storage System?

Simple Definition

A Battery Energy Storage System (BESS) stores electricity in batteries when electricity is available and supplies it later when required.

Think of it as:

Electricity Bank

During surplus:

Grid → Battery

During shortage:

Battery → Grid

How BESS Helps Renewable Energy

Consider solar power.

Afternoon

Solar generation is high.

↓

Excess electricity can be stored.

↓

Evening

Solar generation falls.

↓

Demand remains high.

↓

Stored electricity can be discharged.

Thus:

Solar + BESS = More flexible renewable electricity

This can reduce:

• renewable-energy curtailment;
• grid congestion;
• peak-hour stress;
• mismatch between supply and demand.

The government specifically identifies intermittency, congestion, peak-hour curtailment and non-solar-hour demand as problems the BESS component is intended to address.

What Does 50 GWh Mean?

Do not confuse:

GW and GWh.

GW — Gigawatt

Measures power/capacity.

It tells us:

How much electricity can be produced or delivered at a given moment.

GWh — Gigawatt-hour

Measures energy.

It tells us:

How much electricity can be stored or supplied over time.

Therefore:

135 GW → renewable-energy evacuation capacity

50 GWh → battery energy storage capacity

This distinction is a potential Prelims question.

Where Will the BESS Be Installed?

The scheme allows BESS deployment:

• at the renewable-energy developer/generator end; or
• at other locations important for grid flexibility.

This gives the system greater flexibility in managing electricity flows.

Why Is Energy Storage Important for India?

As India’s renewable-energy share rises, the electricity system needs greater flexibility.

India’s National Electricity Plan projections already show a rapidly increasing requirement for battery storage and other storage technologies.

The Central Electricity Authority’s planning studies estimate substantial BESS requirements as renewable generation expands through 2031–32.

Thus:

Renewable Energy Expansion → Storage Requirement → Grid Flexibility

GEC-III and India’s 500 GW Target

One of the most important connections for UPSC is India’s 2030 non-fossil capacity target.

India has committed to achieving:

500 GW of non-fossil electricity capacity by 2030

India had already achieved 50% of cumulative installed electricity capacity from non-fossil sources in June 2025, five years ahead of the original 2030 timeline for that particular NDC milestone.

The challenge now is not only adding generation capacity.

India also needs:

Transmission + Storage + Grid Flexibility + Distribution Reform

This is where GEC becomes important.

From 500 GW to 900 GW

The GEC-III announcement also links the scheme with the longer-term goal of integrating approximately:

900 GW of installed non-fossil capacity by 2035

The Central Electricity Authority has separately prepared transmission planning for integrating over 900 GW of non-fossil capacity by 2035–36.

Therefore, India’s energy-transition strategy can be understood as a progression:

500 GW by 2030

↓

Expanded transmission infrastructure

↓

Storage + grid flexibility

↓

900 GW non-fossil capacity by 2035

This is an important long-term planning perspective.

GEC-III and India’s Net-Zero Goal

India has announced a long-term goal of achieving:

Net-Zero emissions by 2070

The renewable-energy transition is one component of this larger strategy.

Other components include:

• energy efficiency;
• electric mobility;
• green hydrogen;
• nuclear power;
• renewable energy;
• carbon sinks;
• cleaner industrial processes;
• energy storage.

Therefore:

GEC → Renewable Integration → Lower dependence on fossil-based electricity → Lower carbon intensity

However, the corridor itself is a transmission infrastructure programme, not a standalone net-zero programme.

GEC-III and Energy Security

Energy security means ensuring that a country has:

• adequate energy supply;
• reliable access;
• affordable energy;
• resilient infrastructure.

Renewable energy can improve India’s energy security because solar and wind resources are domestically available.

However, large-scale renewable deployment also creates new dependencies involving:

• transmission infrastructure;
• battery technology;
• critical minerals;
• grid management;
• manufacturing supply chains.

Therefore, India’s energy security strategy must increasingly consider the entire energy ecosystem.

GEC-III and Grid Stability

A power grid must maintain a balance between:

Electricity generation = Electricity demand

If generation and demand become significantly mismatched, grid stability can be affected.

Large amounts of variable renewable energy make this balancing task more complex.

GEC-III addresses the challenge through:

• transmission strengthening;
• battery storage;
• grid flexibility;
• better evacuation;
• reduced congestion.

What Is Grid Flexibility?

Simple Meaning

Grid flexibility is the ability of the electricity system to respond quickly to changes in electricity generation and demand.

Flexibility can come from:

• batteries;
• pumped-storage hydropower;
• flexible thermal generation;
• demand response;
• inter-regional transmission;
• smart grids;
• improved forecasting.

GEC-III adds more transmission and BESS capacity to this flexibility toolkit.

Tariff-Based Competitive Bidding

GEC-III also introduces an important implementation mechanism.

Greenfield Projects

New transmission projects under the InSTS component will be implemented through:

Tariff-Based Competitive Bidding (TBCB)

In simple terms:

Different eligible transmission developers compete through a bidding process to provide transmission services at competitive tariffs.

What About Brownfield Projects?

Greenfield

A greenfield project is a new project built from the beginning.

Brownfield

A brownfield project involves upgrading, expanding or strengthening an existing system.

Under GEC-III:

Greenfield projects → TBCB

Brownfield upgradation/network strengthening → Cost Plus Basis

The State Transmission Utilities will be the overall implementing agencies. Transmission Service Providers will participate through the Build-Own-Operate-Maintain (BOOM) model under the competitive-bidding route.

Central Financial Support

The total project outlay is:

₹1,86,405 crore

It consists of:

₹1,36,378 crore

For intra-state transmission systems.

₹50,000 crore

For 50 GWh BESS.

The government will provide:

₹54,082 crore Central Financial Support

The objective is also to help offset intra-state transmission charges and keep electricity costs lower for consumers.

Why Government Financial Support Is Necessary

Transmission infrastructure requires large upfront investment.

Renewable-energy projects may also be located in remote areas.

Without financial support:

• transmission charges could rise;
• renewable power could become less competitive;
• States could face financial constraints;
• project implementation could slow down.

Central support can therefore reduce the financial burden on States and transmission infrastructure developers.

GEC-III and Employment

The scheme is expected to create employment through:

• transmission construction;
• manufacturing;
• engineering;
• infrastructure development;
• battery manufacturing;
• installation;
• operation and maintenance;
• grid management.

The BESS component can also support India’s domestic energy-storage ecosystem.

GEC-III and Make in India

Large-scale transmission and storage deployment can create demand for:

• batteries;
• power electronics;
• transformers;
• substations;
• transmission equipment;
• control systems;
• grid-management technologies.

Therefore, GEC-III can contribute to both:

Energy transition + domestic manufacturing

Himachal Pradesh Connection

This topic is particularly relevant for HPPSC aspirants.

Himachal Pradesh is already one of the States covered under GEC Phase-II.

This is important because Himachal Pradesh has significant renewable-energy potential, particularly in:

• hydropower;
• solar energy;
• small hydro;
• emerging green-energy technologies.

The State’s mountainous geography also creates specific challenges related to:

• transmission infrastructure;
• difficult terrain;
• landslides;
• extreme weather;
• environmental sensitivity;
• evacuation of hydropower.

The CEA also maintains transmission-planning material specifically concerning hydro projects in Himachal Pradesh.

HPPSC Angle

A question can potentially connect:

Himachal Hydropower → Transmission → Green Energy Corridor → Energy Security → Environmental Concerns

Why Transmission Is a Major Challenge in Himachal Pradesh

Himachal Pradesh generates substantial hydropower, but its geography creates infrastructure challenges.

Mountainous terrain can increase the difficulty and cost of:

• constructing transmission lines;
• building substations;
• maintaining infrastructure;
• managing landslide risks;
• obtaining clearances.

Thus, for Himachal Pradesh:

Energy generation capacity alone is insufficient; evacuation infrastructure is equally important.

Major Benefits of GEC-III

Better Renewable Energy Integration

More renewable electricity can be connected to the grid.

Reduced Curtailment

Improved transmission and storage can reduce situations where renewable power must be curtailed.

Greater Grid Flexibility

BESS can help balance fluctuations.

Energy Security

Greater use of domestic renewable resources can reduce dependence on imported fossil fuels.

Climate Benefits

Greater renewable-energy integration can support lower carbon intensity.

Economic Benefits

Transmission and storage investment can create employment and manufacturing opportunities.

Consumer Benefits

Central support is intended to help contain transmission-related costs.

Major Challenges

GEC-III is significant, but implementation will not be automatic.

High Capital Cost

The scheme requires an investment of ₹1.86 lakh crore.

Large infrastructure projects require:

• financing;
• land;
• equipment;
• skilled manpower;
• coordination between agencies.

Land and Right-of-Way Issues

Transmission lines require corridors across large geographical areas.

Land acquisition and right-of-way issues can delay projects.

Environmental Concerns

Transmission infrastructure can affect:

• forests;
• wildlife habitats;
• agricultural land;
• fragile mountain ecosystems.

This is particularly relevant in Himalayan States.

Battery Supply Chains

Large-scale BESS deployment creates demand for battery materials and technologies.

This raises questions about:

• lithium;
• nickel;
• cobalt;
• graphite;
• rare earth-related supply chains;
• recycling.

Therefore:

Renewable-energy transition → Critical minerals demand

Battery Waste and Recycling

Large-scale battery deployment will eventually generate battery waste.

India will therefore need:

• recycling infrastructure;
• safe disposal;
• material recovery;
• circular-economy systems.

Grid Management

More renewable energy means more complex electricity-system management.

India will need:

• better forecasting;
• advanced control systems;
• smart grids;
• storage;
• demand response.

Green Energy Corridor and Smart Grid

A smart grid is an electricity network that uses digital technologies, sensors, communication systems and automated controls to monitor and manage electricity flows.

As renewable-energy penetration rises, smart-grid technologies become increasingly important.

The future electricity system is therefore likely to look like:

Renewable Generation

↓

Transmission

↓

Battery/Pumped Storage

↓

Smart Grid

↓

Distribution

↓

Consumers

This is the emerging architecture of India’s clean-energy transition.

Green Energy Corridor vs Green Hydrogen

These two concepts are related but different.

Green Energy Corridor

Focus:

Electricity transmission and renewable-energy integration

Green Hydrogen

Focus:

Production of hydrogen using renewable electricity

The Green Energy Corridor can indirectly support green hydrogen because renewable electricity must be reliably transmitted to hydrogen-production facilities.

The CEA also lists transmission planning for connectivity to green-hydrogen plants among its responsibilities.

GEC and Pumped-Storage Hydropower

Battery storage is not India’s only storage option.

Another important technology is:

Pumped-Storage Hydropower (PSP)

During periods of surplus electricity:

Water is pumped to a higher reservoir.

During periods of high demand:

Water flows downward through turbines to generate electricity.

India is increasingly considering pumped storage as an important component of grid flexibility.

The CEA has also prepared a roadmap for 100 GW of pumped-storage projects.

Thus:

BESS + Pumped Storage + Transmission = Renewable Grid Flexibility

The Bigger Picture: India’s Energy Transition

GEC-III should not be studied in isolation.

It forms part of a much larger ecosystem:

Generation

Solar + Wind + Hydro + Nuclear + Biomass

↓

Transmission

Green Energy Corridor + Inter-State Transmission System

↓

Storage

BESS + Pumped Storage

↓

Grid

Smart Grid + Forecasting + Flexibility

↓

End Use

Industry + Transport + Agriculture + Households

↓

Long-Term Goal

Energy Security + Lower Emissions + Sustainable Development

Key Government Initiatives Connected With GEC

UPSC aspirants should connect GEC-III with:

• National Solar Mission
• National Green Hydrogen Mission
• PM Surya Ghar: Muft Bijli Yojana
• Renewable Purchase Obligations
• Green Energy Open Access Rules
• Battery Energy Storage Systems
• Pumped Storage Projects
• National Electricity Plan
• Green Energy Corridor
• National Mission for Enhanced Energy Efficiency

These are not identical schemes, but they form part of India’s broader clean-energy transition.

Prelims Perspective

Important Facts to Remember

Green Energy Corridor Phase-III

→ Approved on 30 September 2026

→ Strengthens intra-state transmission

→ Enables evacuation of up to 135 GW renewable energy

→ Includes 50 GWh BESS

→ Total outlay: ₹1,86,405 crore

→ Transmission component: ₹1,36,378 crore

→ BESS component: ₹50,000 crore

→ Central Financial Support: ₹54,082 crore

→ Target completion: FY 2032–33

→ Supports integration of 900 GW non-fossil capacity by 2035

Important Conceptual Distinctions

GW vs GWh

GW = power/capacity

GWh = energy/storage quantity

Generation vs Evacuation

Generation = producing electricity

Evacuation = transmitting generated electricity to the grid

Greenfield vs Brownfield

Greenfield = new infrastructure

Brownfield = upgrading existing infrastructure

Intra-State vs Inter-State

Intra-State = within a State

Inter-State = between States

Renewable Capacity vs Renewable Generation

Installed capacity tells us the maximum rated generating capability.

Actual generation depends on factors such as:

• sunlight;
• wind;
• water availability;
• plant utilisation;
• grid availability.

Possible UPSC Prelims Questions

Question 1

With reference to Green Energy Corridor Phase-III, consider the following statements:

1. It aims to strengthen intra-state transmission systems.
2. It includes provision for Battery Energy Storage Systems.
3. It will itself generate 135 GW of renewable electricity.
4. It is targeted for completion by FY 2032–33.

Which of the statements given above are correct?

Answer: 1, 2 and 4 only

The scheme enables evacuation of up to 135 GW; it does not itself generate 135 GW.

Question 2

Consider the following pairs:

Which of the above are correctly matched?

Answer: All four

Question 3

The primary purpose of a Green Energy Corridor is to:

A. Produce electricity from renewable sources

B. Provide transmission infrastructure for integrating renewable electricity

C. Manufacture solar panels

D. Replace all thermal power plants

Answer: B

UPSC Mains Perspective

GS Paper III

This topic is primarily relevant to:

Infrastructure + Energy + Environment + Science & Technology

It can also be connected with:

• economic development;
• climate change;
• energy security;
• critical minerals;
• manufacturing.

Possible Mains Question

“India’s renewable-energy transition requires not only generation capacity but also adequate transmission and storage infrastructure. Discuss with reference to the Green Energy Corridor Phase-III.”

Introduction

India is rapidly expanding its renewable-energy capacity as part of its energy-security and climate objectives. However, the growing share of variable renewable energy creates challenges relating to transmission, grid stability and supply-demand balancing. Green Energy Corridor Phase-III seeks to address these constraints.

Body

Need for GEC

• Renewable-energy projects are often geographically concentrated.
• Generation centres may be far from demand centres.
• Solar and wind generation is variable.
• Transmission bottlenecks can cause curtailment.

Key features of GEC-III

• ₹1.86 lakh crore outlay
• 135 GW renewable-energy evacuation
• 50 GWh BESS
• Central Financial Support of ₹54,082 crore
• intra-state transmission strengthening
• implementation targeted by FY 2032–33

Significance

• renewable-energy integration;
• grid flexibility;
• lower curtailment;
• energy security;
• employment;
• manufacturing;
• climate mitigation.

Challenges

• land acquisition;
• environmental concerns;
• high capital requirements;
• battery supply chains;
• recycling;
• grid management;
• inter-agency coordination.

Way Forward

India should adopt an integrated approach combining:

Transmission + BESS + Pumped Storage + Smart Grids + Domestic Manufacturing + Recycling + Better Forecasting

Conclusion

The success of India’s renewable-energy transition will depend not merely on how much renewable capacity is installed, but on how effectively that electricity can be transmitted, stored and integrated into a reliable grid. GEC-III therefore represents an important shift from simply adding renewable capacity towards building the infrastructure required to make renewable electricity usable at scale.

Essay Perspective

GEC-III can also be used in essays on:

“Energy Security in the Age of Climate Change”

“Infrastructure as the Backbone of Sustainable Development”

“India’s Path Towards a Green Economy”

“Technology and the Energy Transition”

“Balancing Development and Environmental Sustainability”

Keywords You Must Know

Renewable Energy

Energy obtained from naturally replenishing sources such as solar, wind, hydro and biomass.

Non-Fossil Energy

Energy sources that do not rely on fossil fuels; in India’s policy context this includes renewable sources and nuclear power.

Transmission

Movement of electricity over high-voltage networks from generation facilities towards distribution systems.

Power Evacuation

Transfer of generated electricity from a power plant through transmission infrastructure to the grid.

Curtailment

Reduction or restriction of electricity generation despite available generating capability, often because the grid cannot absorb or transmit all available power.

Intermittency

Variability of electricity generation from sources such as solar and wind.

Grid Flexibility

The ability of an electricity system to respond to changes in supply and demand.

BESS

Battery Energy Storage System used to store electricity and supply it when required.

Smart Grid

A digitally enabled electricity network capable of monitoring, controlling and optimising power flows.

Pumped Storage

A hydropower-based storage technology that stores energy by pumping water to an elevated reservoir and generates electricity when water is released.

TBCB

Tariff-Based Competitive Bidding, a competitive mechanism used for selecting transmission service providers.

One-Page Revision Notes

Green Energy Corridor Phase-III — 2026

Approved: 30 September 2026

Ministry: Ministry of New and Renewable Energy

Core focus: Intra-State Transmission System

Renewable evacuation: 135 GW

Storage: 50 GWh BESS

Total outlay: ₹1,86,405 crore

Transmission: ₹1,36,378 crore

BESS: ₹50,000 crore

Central Financial Support: ₹54,082 crore

Completion: FY 2032–33

Long-term objective: Support integration of 900 GW non-fossil capacity by 2035

Major problems addressed:

• Intermittency
• Transmission congestion
• Curtailment
• Peak-hour demand
• Non-solar-hour demand

Implementation:

Greenfield → TBCB

Brownfield → Cost Plus Basis

Implementing agency: State Transmission Utilities

Transmission providers: BOOM model under TBCB

The Bigger UPSC Takeaway

The most important lesson from GEC-III is:

India’s renewable-energy challenge is moving from “How much electricity can we generate?” to “How effectively can we transmit, store and integrate that electricity?”

This represents a major shift in India’s energy-transition strategy.

Earlier, the primary emphasis was on:

Solar + Wind Capacity Addition

Now the system increasingly requires:

Generation + Transmission + Storage + Smart Grids + Flexibility

Therefore, GEC-III should be understood as an important piece of India’s broader transition towards a reliable, renewable-rich and low-carbon electricity system.

For UPSC, remember the complete chain:

Renewable Energy → Transmission → Storage → Grid Flexibility → Energy Security → Climate Goals

That single chain can help you connect this current affair with GS-III, Environment, Economy, Science & Technology, Geography and Essay.