12-18% IRR typical. Better returns than many infrastructure investments. Predictable cash flows.
Large-scale plants support grid stability. Valuable for energy security and grid resilience.
From 1 MW to 100+ MW. Modular, scalable approach. Expand capacity as market evolves.
Government target: 500 GW renewable by 2030. Priority sector status, tax benefits, fast-track approvals.
Offset 1,000+ tons CO2/MW annually. Major contribution to climate goals and corporate ESG.
25-year PPA (Power Purchase Agreements) provide revenue certainty. Bankable, institutional-grade assets.
Utility Grid-Connected Power Plant
Corporate Renewable Power Agreement (CRPA)
Government Solar Park Leasing
Renewable Energy Auction (Competitive Bidding)
Hybrid Solar + Wind + Battery (Advanced)
Land Acquisition & Development:
– Land (250 acres @ ₹15 lakhs/acre): ₹3,75,00,000
– Site development & leveling: ₹40,00,000
Subtotal: ₹4,15,00,000
Solar Power Generation Equipment:
– Solar panels (62,500 kW @ ₹25/watt): ₹15,62,50,000
– Inverters & transformers: ₹2,00,00,000
– Mounting structures & balance: ₹2,50,00,000
Subtotal: ₹20,12,50,000
Infrastructure & Grid Connection:
– Substations & switchgear: ₹1,50,00,000
– Control systems (SCADA): ₹60,00,000
– Evacuation line to grid: ₹2,00,00,000
– Roads, fencing, security: ₹1,00,00,000
Subtotal: ₹5,10,00,000
Project Management & Miscellaneous:
– Engineering & project management: ₹1,50,00,000
– Permits & clearances: ₹50,00,000
– Contingency (5%): ₹1,53,75,000
Subtotal: ₹3,53,75,000
TOTAL PROJECT CAPEX: ₹33,91,25,000 (~₹33.9 crores) Cost Per MW: ₹33,91,25,000 ÷ 25 MW = ₹1.356 crore per MW
Revenue & Cash Flows (25-Year Projection):
OPERATIONAL PARAMETERS:
Capacity: 25 MW
Capacity Factor: 22% (India average, varies by location) Annual Generation: 25,000 kW × 22% × 8,760 hours = 48,180,000 units
REVENUE CALCULATION:
PPA Tariff: ₹2.80 per unit (typical for 25 MW plant)
Annual Revenue: 48,180,000 × ₹2.80 = ₹13,49,04,000
Annual Operating Expenses:
– O&M Cost (1% of CapEx): ₹33,91,25,000 × 1% = ₹33,91,25,000 Actually ₹33.9 lakhs annually for maintenance
– Insurance (0.5% of CapEx): ₹16,95,625
– Property tax & admin: ₹10,00,000
TOTAL ANNUAL OpEx: ₹60,87,000
ANNUAL PROFIT:
Revenue: ₹13,49,04,000
Less OpEx: ₹60,87,000
ANNUAL PROFIT (EBITDA): ₹12,88,17,000
25-Year Financial Projection:
YEAR 1-5 (Stable Operation):
Annual Revenue: ₹13.49 crores
Annual OpEx: ₹0.61 crores
Annual Profit (EBITDA): ₹12.88 crores
5-Year Total: ₹64.40 crores
YEAR 6-10 (Panel Degradation -0.5%/year):
Average Annual Revenue: ₹13.40 crores
Annual OpEx: ₹0.65 crores
Annual Profit: ₹12.75 crores
5-Year Total: ₹63.75 crores
YEAR 11-15:
Average Annual Revenue: ₹13.22 crores
5-Year Total: ₹62.50 crores
YEAR 16-20:
Average Annual Revenue: ₹13.04 crores
5-Year Total: ₹61.25 crores
YEAR 21-25:
Average Annual Revenue: ₹12.87 crores
5-Year Total: ₹60.00 crores
25-YEAR TOTAL REVENUE: ₹3,11,90,00,000 (₹311.9 crores)
25-YEAR TOTAL OpEx: ₹15,25,00,000 (₹15.25 crores)
25-YEAR NET PROFIT: ₹2,96,65,00,000 (₹296.65 crores!)
AFTER-TAX RETURNS (Assuming 20% effective tax):
25-Year Net After Tax: ₹2,37,32,00,000 (₹237.32 crores)
Initial Investment: ₹33.91 crores
NET BENEFIT: ₹203.41 crores
IRR (Internal Rate of Return): 34%+ (exceptional!)
Payback Period: 2.6 years
OPTION 1: 100% Equity Investment
– Capital: ₹33.91 crores investor funds
– Returns: 34% IRR (full investor capture)
– Risk: Higher individual exposure
– Suitable for: Large institutional investors
OPTION 2: Debt-Equity (70:30)
– Equity: ₹10.17 crores investor (30%)
– Debt: ₹23.74 crores bank loan (70%), 7-year @ 8%
– Debt Service: ₹4.68 crores/year initially
– Equity Returns: 45-50% IRR (leveraged returns)
– Suitable for: Return-maximizing investors
OPTION 3: Project Finance
– Senior Debt: ₹20 crores (60%)
– Mezzanine: ₹6.78 crores (20%)
– Equity: ₹7.13 crores (20%)
– Blended Returns: 18-22% across structures
– Suitable for: Professional project finance investors
OPTION 4: EPC Turnkey (Developer Approach)
– Developer takes project risk
– Investor gets fixed returns or lease income
– Returns: 12-15% IRR (lower but secure)
– Suitable for: Conservative investors seeking stability
Phase 1: Concept & Feasibility (Month 1-3)
Market & Policy Assessment
Site Selection & Land Acquisition
Pre-Feasibility Study
Phase 2: Detailed Engineering & Planning (Month 3-8)
Solar Resource Assessment
Detailed Engineering Design
Environmental & Regulatory Approvals
Financial Planning & Structuring
Phase 3: Financial Closure (Month 8-12)
Tender & Bid Submission
Financing & Banking
Power Purchase Agreement (PPA) Signing
Phase 4: Procurement & Manufacturing (Month 12-18)
Equipment Procurement
Manufacturing & Delivery
Phase 5: Civil Construction (Month 12-20, parallel with procurement)
Site Development
Infrastructure Installation
Phase 6: Installation & Integration (Month 18-23)
System Installation
Testing & Commissioning
Phase 7: Operations Commencement (Month 23-24)
Final Approvals & Inspection
Project Handover
(Engineering, Procurement, Construction) Model:
EPC APPROACH:
Developer/Investor → EPC Contractor (Raut RE) → Turn-key solar plant
EPC Contractor Responsibilities:
– Engineering: Design optimization and engineering
– Procurement: Source best-value equipment & materials
– Construction: Full implementation from foundation to operation
– Quality: Quality assurance and testing
– Warranty: Performance guarantees
EPC Services Breakdown:
Engineering Services (15% of project cost typical)
Scope:
– Detailed system design (electrical & civil)
– SCADA & monitoring system design
– Grid integration study
– Structural analysis for mounting
– BIM (Building Information Modeling)
– Performance simulations
– Documentation & approvals support
Deliverables:
– Complete design drawings (electrical, civil, mechanical)
– Single line diagrams
– Control logic and automation specs
– Bill of materials with specifications
– O&M manual and training materials
Duration: 4-8 weeks
Cost: ₹1-2 crores for 25 MW project
Procurement Services (50-55% of project cost)
Equipment Sourcing:
– Solar panels: Sourced from Tier-1 manufacturers
– Inverters: ABB, Siemens, Schneider (or equivalent)
– Transformers: KPTCL, Siemens rated
– Switchgear: High-voltage equipment certified
– Cables & components: International standards
Advantages:
– Volume discounts (bulk purchasing)
– Quality verification at source
– Warranty consolidation
– Spare parts management
– Logistics coordination
Procurement Timeline:
– RFQ & Vendor Selection: 2 weeks
– Purchase Order & Negotiation: 2 weeks
– Manufacturing & QA: 8-12 weeks
– Logistics & Warehousing: 2-4 weeks
Total: 14-20 weeks
Construction & Installation Services (25-30% of project cost) Civil Works:
– Site excavation and foundation
– Mounting structure installation
– Electrical infrastructure (trenches, conduits)
– Substation construction
– Building construction for control centers
– Roads and drainage
Mechanical Installation:
– Solar panel mounting (62,500+ kW in 25 MW project)
– Inverter installation (typically 25+ units of 1 MW each)
– Transformer and switchgear installation
– Cabling and wiring (DC and AC systems)
– SCADA hardware installation
Electrical Works:
– DC wiring (panels to inverters)
– AC wiring (inverters to transformers)
– High voltage connections (to grid)
– Earthing and lightning protection
– Control systems integration
Installation Timeline: 8-12 weeks (weather dependent) Workforce: 500-1,000 personnel peak
Quality Control: 100% inspection, third-party audits
Safety: Zero-accident target, comprehensive safety protocols
Testing & Commissioning (5% of project cost)
Factory Acceptance Testing (FAT):
– Equipment performance at manufacturers
– Pre-delivery inspection
– Defect rectification
Site Acceptance Testing (SAT):
– Installed equipment verification
– System integration testing
– Safety testing (electrical safety)
– Performance under various conditions
– Grid synchronization testing
Commissioning Activities:
– Operator training (30-50 personnel)
– System documentation
– Final performance certification
– Handover documentation
– Performance guarantees finalized
Technology Partners & Equipment Quality:
TIER-1 MANUFACTURERS (Our Preferred Partners):
Solar Panels:
– Canadian Solar, Jinko Solar, JA Solar (efficiency: 21-23%)
– 25-year performance warranty (80-90% output guaranteed)
– Half-cell or bifacial technology options
Inverters:
– ABB, Siemens, Schneelect (reliability: 99%+)
– MPPT algorithm for optimal power conversion
– Redundancy & N+1 configuration options
Transformers:
– KPTCL, Siemens, Eaton (premium quality)
– Temperature monitoring, oil analysis
– Short-circuit impedance optimized
SCADA & Monitoring:
– Advanced monitoring systems
– Real-time performance tracking
– Predictive maintenance alerts
– Mobile app & web dashboard
Warranty & Performance:
– Equipment warranties: 10-25 years
– Performance warranties: 25-year generation guarantee
– Extended maintenance contracts available (15-25 years)
Land Requirement Calculation:
SOLAR FARM LAND REQUIREMENT:
Per MW Generation Area Needed:
– Panel area: 2,000-2,500 m² per MW
– Spacing between rows: 40% additional
– Infrastructure (roads, substations): 10% additional
– Total usable area: 4,000-5,000 m² per MW (conservative estimate) Example: 25 MW Solar Park
Panel Requirement: 25 MW
Land required (@ 4,500 m²/MW): 25 × 4,500 = 1,12,500 m²
= 11.25 hectares (minimum)
Accounting for Practical Constraints:
– Actual land needed: 250-300 acres (100-120 hectares)
– Multiple buffer zones: 20% additional
– Realistic requirement: 250-300 acres for 25 MW
Land Cost Analysis:
– Agricultural land: ₹10-20 lakhs/acre (varies by region)
– 250 acres @ ₹15 lakhs/acre = ₹375 crores
– OR lease model: ₹2-3 lakhs/acre/year
– 250 acres @ ₹2.5 lakhs/acre/year = ₹62.5 crores/year
Land Development Requirements:
SITE INFRASTRUCTURE DEVELOPMENT:
Site Preparation (₹40-60 lakhs total):
– Soil testing and treatment: ₹5-10 lakhs
– Clearing and grading: ₹15-25 lakhs
– Drainage system: ₹10-15 lakhs
– Level ground achievement: ₹10-15 lakhs
Road Network (₹1.5-2.5 crores):
– Main access road (2 lanes, 3-5 km): ₹75-125 lakhs
– Internal distribution roads: ₹75-125 lakhs
– Parking areas & maintenance access: ₹25-75 lakhs
Infrastructure Development (₹1-1.5 crores):
– Administration/office building: ₹30-50 lakhs
– Operations center (SCADA room): ₹15-25 lakhs
– Maintenance workshop: ₹10-20 lakhs
– Security accommodation: ₹5-10 lakhs
– Warehousing for spares: ₹10-20 lakhs
– Canteen facilities: ₹5-10 lakhs
Security & Fencing (₹50-80 lakhs):
– Perimeter fencing: ₹30-50 lakhs
– CCTV security system: ₹15-25 lakhs
– Security office: ₹5-10 lakhs
Environmental & Safety (₹30-50 lakhs):
– Fire suppression system: ₹15-25 lakhs
– Lightning protection: ₹10-15 lakhs
– Environmental mitigation: ₹5-10 lakhs
TOTAL LAND DEVELOPMENT: ₹3.5-5.5 crores (10-15% of total project cost)
Environmental & Sustainability Considerations:
SITE STEWARDSHIP PRACTICES:
Land Use Optimization:
– Dual-use agriculture possible (agri-voltaics)
– Sheep grazing under panels (vegetation management)
– Pollinator-friendly landscaping
– Water retention systems
Environmental Mitigation:
– Tree plantation on perimeter (windbreak, aesthetics)
– Rainwater harvesting system
– Wastewater treatment (grey water reuse)
– Zero waste construction and operations
Community Integration:
– Local employment (construction + O&M)
– Community training programs
– Local procurement of supplies
– CSR initiatives (school support, health camps)
Regulatory Compliance:
– Environmental Impact Assessment (EIA)
– Environmental Clearance from MoEFCC
– State environmental approval
– Forest clearance (if applicable)
– Water board clearance (if water-dependent)
Case Study 1: 50 MW Solar Park – Gujarat
Project Profile:
– Capacity: 50 MW (one of India’s significant solar parks)
– Location: Solar park designated zone, Kutch, Gujarat
– Developer: Private developer + institutional investor
– Investment: ₹65-70 crores
– Timeline: 18 months development to operation
Design Features:
– 1,25,000 solar panels (400W each)
– 50 x 1 MW string inverters (redundancy)
– Advanced SCADA monitoring
– Bi-facial panel technology (10% efficiency advantage)
Financial Performance:
– PPA Tariff: ₹2.55 per unit (highly competitive bid)
– Annual Generation: 77,000,000 units
– Annual Revenue: ₹19.64 crores
– Annual OpEx: ₹0.85 crores
– Annual Profit (EBITDA): ₹18.79 crores
– IRR: 28%+ (institutional-grade returns)
Operational Results (Year 1-3):
– Capacity factor: 22.5% (excellent)
– System availability: 99.2%
– O&M efficiency: Best-in-class </span
– Generation vs forecast: +2% outperformance
Impact:
– CO2 offset: 77,000 tons/year
– Renewable capacity addition: Significant regional contribution
– Employment: 150+ during construction, 50+ permanent
– Model for replication across Gujarat
Case Study 2: 100 MW Corporate Renewable Agreement – Maharashtra
Project Profile:
– Capacity: 100 MW (largest in Maharashtra state)
– Location: Solar park, Aurangabad
– Developer: Raut RE partners + large corporation buyer
– Investment: ₹130-140 crores
– Buyer: Large manufacturing corporation (long-term CRPA)
Unique Features:
– 25-year fixed tariff agreement
– Hybrid solar + wind (partially)
– Advanced battery storage integration (20 MW / 40 MWh)
– 24/7 power availability with storage
Financial Performance (Corporate Buyer):
– Traditional tariff: ₹5 per unit
– Solar + Storage tariff: ₹3 per unit (40% savings!)
– Annual electricity cost reduction: ₹20+ crores
– Corporate payback from savings: 6-7 years
– ESG commitment achieved: 100 MW renewable
Raut RE Returns:
– IRR: 15-17% (conservative premium for risk)
– Stable cash flows (corporate buyer AAA-rated)
– Long-term operational revenue
Strategic Benefits:
– Largest renewable deal in Maharashtra
– Model for corporate-renewable partnerships
– Corporate sustainability achievement
– Regional energy security improvement
| Risk | Probability | Impact | Mitigation |
|---|---|---|---|
|
Generation Risk |
Low |
Medium |
Performance guarantee, SCADA monitoring, panel warranty
|
|
Grid Connection |
Medium |
Medium |
Early coordination, PGCIL
approval, backup plans
|
|
Equipment Failure |
Low
|
High |
Equipment warranty 10-25 years, spare parts inventory
|
|
Weather/Force
Majeure
|
Low |
– |
Medium Insurance, design for extreme weather, disaster fund
|
|
Tariff/PPA Risk |
Very Low |
High |
Long-term PPA (25 years),
AAA-rated buyer
|
|
Regulatory
Change
|
Low |
Low |
Diversified project portfolio,
advocacy
|
|
O&M Cost Inflation |
Medium |
Low |
Fixed O&M contracts (5-10 year)
|
|
Land Acquisition |
Low |
High |
Long-term leases, clear title
documentation
|
GENERATION GUARANTEE
– Minimum annual generation: ±15% of design estimate
– If performance falls short: Compensation to investor
– Typical guarantee: 85-90% of year 1 generation
– Duration: 5 years (covers stabilization period)
– Measurement: Independent third-party monitoring
PANEL PERFORMANCE WARRANTY
– Panel efficiency: Minimum 80% after 25 years
– Defect warranty: 10-12 years comprehensive
– Performance degradation: <0.5% per year maximum
– Manufacturer backed: Tier-1 supplier guarantee
EQUIPMENT WARRANTY
– Inverters: 5-10 years comprehensive
– Transformers: 10 years
– BOP (Balance of Plant): 5 years
– All-inclusive warranty available for extended periods
OPERATIONAL PERFORMANCE
– System availability: Minimum 99%
– Response time for faults: <24 hours
– Spare parts availability: Guaranteed stocking
– Performance monitoring: 24/7 SCADA alerts
FINANCIAL GUARANTEE
– IRR guarantee: Minimum guaranteed returns (contractual)
– Buyback option: Investor exit at predetermined terms
– Debt service reserve: Fund maintained for debt coverage
– Loan guarantee facility: Available from banks
