India Solar Industry Outlook 2025-26: Key Trends

Key Takeaways

• India installed 25+ GW of solar capacity in FY2024-25, bringing total installed capacity past 90 GW — firmly on track for the 280 GW solar target by 2030.
• Module prices have dropped 30–40% from their 2023 peaks due to Chinese oversupply, making 2025–26 the best time in history to invest in industrial solar.
• Industrial electricity tariffs continue rising 5–7% annually across states, widening the gap between grid power and solar — ROI for factory solar has never been better.
• ALMM 2.0 (Approved List of Models and Manufacturers) enforcement strengthens domestic manufacturing but may create short-term module supply tightness.
• Battery storage costs are approaching viability for C&I applications, with prices expected to drop below ₹6,000/kWh by 2027.

India's Solar Capacity: Where We Stand

Installed Capacity Milestones

The C&I (commercial and industrial) rooftop segment is growing at 35–40% annually, driven by high grid tariffs and increasingly favorable net metering and open access policies.

The C&I Solar Boom

India's C&I rooftop solar segment has emerged as the fastest-growing segment:

• C&I rooftop installations in FY2024-25: ~5.5 GW (up from 3.8 GW in FY2023-24)
• Average system size trending up: From 200 kW to 350 kW as factories install larger systems
• Top C&I states: Maharashtra, Gujarat, Rajasthan, Haryana, Tamil Nadu, Karnataka
• Key driver: Industrial tariffs of ₹8–13/kWh vs. solar LCOE of ₹2.5–3.5/kWh — the economics are overwhelming

Module Price Trends: Best Time to Buy

Global Module Price Collapse

Chinese solar module oversupply has driven global prices to historic lows:

This means a 1 MW solar EPC project that cost ₹4.5–5.0 Crore in early 2023 now costs ₹3.2–4.0 Crore — a 20–30% reduction.

BCD and ALMM Impact on Indian Market

The Indian government has implemented measures to promote domestic manufacturing:

• Basic Customs Duty (BCD): 40% on imported modules, 25% on imported cells — effectively making Chinese modules uncompetitive in India
• ALMM (Approved List of Models and Manufacturers): Only ALMM-listed modules can be used in government and subsidy-backed projects
• Production Linked Incentive (PLI): ₹24,000 Crore allocated for domestic solar manufacturing

What this means for industrial buyers: Indian-manufactured modules from Waaree, Adani Solar, and Vikram Solar are the primary options. Prices are slightly higher than Chinese imports but BIS certification and ALMM listing ensure quality and warranty enforceability.

Module Technology Trends

The best choice for industrial rooftop in 2025: Mono PERC remains the value sweet spot. TOPCon offers 8–10% more energy per square meter, justifying the premium for space-constrained rooftops.

Industrial Tariff Trends: The Growing Case for Solar

State-Wise Tariff Trajectory

Industrial electricity tariffs have increased consistently:

Meanwhile, solar LCOE has dropped from ₹4–5/kWh in 2020 to ₹2.5–3.5/kWh in 2025. The cost gap widens every year, making the case for solar stronger with each passing quarter.

Cross-Subsidy Surcharge Trends

For open access and group captive solar buyers, CSS trends are important:

• CSS rates have generally increased across states as DISCOMs try to protect revenue
• The Electricity (Amendment) Bill proposes rationalization of CSS, which could reduce rates for renewable OA
• Until then, group captive (with CSS waiver) remains the most cost-effective OA model

Policy Developments Shaping Industrial Solar

National Level

1. Electricity (Amendment) Bill: Proposes delicensing of distribution, which would enable easier open access and direct renewable energy procurement. If passed, this could be the single biggest boost to C&I solar.

2. Green Energy Open Access Rules, 2022: Already simplified OA for renewable energy — reduced minimum capacity threshold, standardized charges, and faster approvals. Impact is being felt in increased OA solar installations.

3. National Solar Mission Phase-III: Target of 100 GW rooftop solar by 2030. While PM Surya Ghar Yojana focuses on residential, the policy environment supports C&I growth through streamlined net metering and OA.

4. Carbon Credit Trading Scheme (CCTS): India's voluntary carbon market is developing. Industrial solar installations will be able to monetize carbon credits, adding ₹0.5–2.0/kWh in additional value.

5. RPO Trajectory: Renewable Purchase Obligation targets are increasing to 43% by FY2030 (with 25% solar). Non-compliance penalties are being enforced more strictly, making solar installation a compliance necessity.

State-Level Developments

Haryana:

• DHBVN and UHBVN have streamlined net metering approvals — now 30–45 days
• Industrial policy incentives for solar under HEPP (Haryana Enterprise Promotion Policy)
• Sun Wave Technologies, based in Faridabad, works closely with both DISCOMs

Rajasthan:

• Rajasthan Investment Promotion Scheme (RIPS) continues to support industrial solar
• Best solar irradiance in India (5.5–6.0 kWh/m²/day) makes the state a top destination for open access solar plants
• Reduced wheeling charges for intra-state solar

Maharashtra:

• MERC is reviewing net metering regulations — potential shift to net billing for larger systems
• Very high industrial tariffs (₹10–13/kWh) ensure excellent solar economics regardless of policy changes
• Strong developer ecosystem for RESCO/PPA projects

Gujarat:

• Lowest CSS among major states (₹0.87/kWh) makes third-party open access viable
• Strong domestic manufacturing base (Waaree, Adani Solar headquartered in Gujarat)
• Progressive solar policy with consistent government support

Battery Storage: The Next Frontier for Industrial Solar

Where Battery Costs Stand

What Battery Storage Means for Factories

Currently, solar offsets only daytime electricity consumption. With battery storage:

• Peak shaving: Store cheap solar power and use it during evening peak tariff hours
• DG replacement: 4–6 hours of battery backup can eliminate diesel generators entirely
• Demand charge reduction: Reduce your peak demand, lowering the fixed charge component
• 24/7 renewable: Achieve 80–100% renewable electricity consumption

The Timeline for Industrial Battery Adoption

• 2025–2026: Early adopters with very high tariffs (Maharashtra, Delhi) and heavy DG usage
• 2027–2028: Mainstream adoption for factories with evening/night shifts
• 2029–2030: Standard feature in all new industrial solar installations

What This Means for Your Factory: Action Items

If You Haven't Installed Solar Yet

Act now. Module prices are at historic lows, grid tariffs are at historic highs, and the cost gap is the widest it's ever been. Every month of delay costs you money. Start with:

1. Get a site assessment from an experienced EPC contractor
2. Compare CAPEX and RESCO options
3. Apply for net metering immediately (30–45 day lead time)

If You Already Have Rooftop Solar

Expand with open access. If your rooftop is fully utilized but you still have significant grid consumption:

1. Explore group captive solar for CSS-free off-site power
2. Consider expanding to ground-mount solar on unused factory land
3. Upgrade your monitoring system if not already in place

If You're Planning for 2027–2030

Design for battery-readiness. When installing solar now:

1. Choose inverters that are battery-compatible (hybrid-ready Sungrow or Huawei models)
2. Allocate space for future battery installation
3. Size your solar system 10–20% larger than current daytime demand to account for future battery charging

Frequently Asked Questions

Is 2025-26 a good time to install industrial solar in India?

2025-26 is arguably the best time in history to install industrial solar in India. Module prices are at historic lows (₹16–20/Watt, down 40% from 2023), grid tariffs are at historic highs (₹8–13/kWh for industrial), and the resulting cost gap means faster payback periods than ever — typically 2.5–3.5 years for CAPEX installations. The government policy environment is also strongly supportive, with streamlined net metering and increasing RPO requirements.

How will ALMM affect industrial solar module availability?

ALMM (Approved List of Models and Manufacturers) ensures only quality-tested modules are available in India. For industrial buyers, this means you'll primarily use modules from Indian manufacturers like Waaree, Adani Solar, Vikram Solar, and their licensed manufacturing partners. While ALMM initially caused some supply tightness, domestic manufacturing capacity has expanded significantly. Prices for ALMM-listed modules are 5–10% higher than Chinese imports but come with better warranty enforceability and BIS certification.

When will battery storage become affordable for factories?

Battery storage costs are declining rapidly — from ₹15,000/kWh in 2022 to ₹7,000–10,000/kWh in 2025. At current prices, batteries are viable for factories with very high tariffs (above ₹12/kWh) or heavy diesel generator usage. By 2027, prices are expected to reach ₹5,000–7,000/kWh, making solar-plus-battery economical for most industrial applications. If you're installing solar now, choose hybrid-ready inverters to easily add batteries later.

What is India's solar capacity target and are we on track?

India's National Solar Mission targets 280 GW of solar by 2030. With approximately 90 GW installed by March 2025 and annual additions accelerating to 25+ GW, India is broadly on track but needs to maintain aggressive installation rates. The C&I rooftop segment is expected to contribute 30–40 GW to this target. Every factory that installs solar contributes to India's energy security and carbon reduction goals.

How will rising electricity tariffs affect my solar investment returns?

Rising tariffs directly improve your solar ROI. Every 1% increase in grid tariff increases your annual savings proportionally. With industrial tariffs rising 5–7% annually and solar LCOE fixed at ₹2.5–3.5/kWh, the savings gap widens every year. A 1 MW system saving ₹1.3 Crore in year 1 will save ₹2.1 Crore by year 10 and ₹3.4 Crore by year 20 (at 5% tariff escalation). The total 25-year savings exceed ₹40 Crore per MW — compared to a one-time investment of ₹3.5–4.5 Crore.

What are the key solar policy changes expected in 2025-26?

The most significant expected changes are: (1) Electricity Amendment Bill passage, which would simplify open access and renewable procurement; (2) Increased RPO enforcement with stricter penalties for non-compliance; (3) Carbon Credit Trading Scheme operationalization, adding ₹0.5–2.0/kWh in additional solar value; (4) Potential net metering to net billing transition in some states for larger systems; and (5) Continued expansion of PM Surya Ghar Yojana for residential solar, which indirectly supports the ecosystem that benefits industrial installations.