Term Loan vs Working Capital

What Is Term Loan vs Working Capital?

Term Loan and Working Capital are the two fundamental debt instruments that power solar project finance in India. Together, they cover the full financial lifecycle of a solar plant, from groundbreaking steel to decades of operations.

A Term Loan is long-term debt that finances the capital expenditure (CAPEX) of building a solar plant. It funds modules, inverters, mounting structures, civil works, turnkey EPC services, and grid interconnection. For utility-scale solar in India, term loans carry tenures of 12 to 18 years, closely matching the 25-year economic life of a solar asset. The loan is drawn down during the 12 to 18-month construction phase and then repaid through predictable PPA revenue over the loan tenure.

A Working Capital facility is short-term debt that finances the operating expenses and cash flow cycles of a running solar plant. It bridges the gap between when bills are due (O&M contracts, insurance premiums, employee salaries, statutory dues) and when PPA revenue is received. Working capital facilities are typically 1-year revolving structures, renewed annually, with interest charged only on the amount drawn.

Important: For a typical 100 MW Indian solar project, the term loan dominates at Rs 350 to 400 crore, while working capital is modest at Rs 1 to 3 crore. Both are essential, one builds the asset, the other keeps it running.

The distinction matters for every stakeholder in Indian solar. For developers, the term loan determines project bankability and equity returns. For lenders, the term loan represents the bulk of credit exposure, while working capital is a lower-risk revolving facility. For C&I consumers evaluating open access or captive solar, understanding these debt structures explains why solar tariffs are structured the way they are.

India’s solar term loan market has matured significantly. PSU banks, IREDA, REC, PFC, and NBFCs all actively lend to solar projects. Interest rates have compressed from 12-14% in 2015 to 9-11% in 2026, reflecting improved lender confidence, better project track records, and policy stability from schemes like PM Surya Ghar and PM-KUSUM.

Why Term Loan vs Working Capital Matters

1. Project Bankability: A well-structured term loan with adequate tenure, moratorium, and amortisation schedule is the difference between a bankable and non-bankable solar project. Lenders evaluate Debt Service Coverage Ratio (DSCR), project IRR, and LCOE before committing debt, and increasingly expect a bankable, PVsyst-validated yield report as part of the due-diligence package.

2. Equity Return Enhancement: Term loans typically cover 70-75% of project cost, meaning developers contribute only 25-30% equity. This leverage amplifies equity returns. A project with 14% unlevered IRR can deliver 18-20% equity IRR with 75% debt financing.

3. Operational Continuity: Working capital ensures the plant never misses an O&M payment or insurance premium. A single missed maintenance cycle can degrade performance, void warranties, and trigger PPA penalties.

4. Cash Flow Predictability: Term loans with fixed amortisation schedules give developers and lenders predictable cash flow profiles. This predictability supports long-term PPA pricing and investor confidence.

5. Tax Efficiency: Interest on both term loans and working capital is tax-deductible under India’s Income Tax Act. For projects claiming 80-IA or Accelerated Depreciation, the interest deduction stacks with these benefits for comprehensive tax optimisation.

6. Risk Segregation: Separating long-term CAPEX financing from short-term operational financing allows each to be optimised independently. Term loans get long tenors and asset-backed security; working capital gets revolving flexibility and current-asset backing.

7. Lender Ecosystem Development: India’s solar term loan market has attracted IREDA, REC, PFC, multilateral lenders (IFC, ADB, AIIB), and foreign banks. This competition has improved terms, reduced rates, and expanded access to capital for solar developers.

How Term Loan vs Working Capital Works

Term Loan Lifecycle

Step 1: Loan Sanction

The developer approaches lenders with a detailed project report, PPA, land documents, EPC contract, and environmental clearances. Lenders conduct due diligence on project viability, sponsor strength, and revenue certainty, including the strength of the PPA’s payment security mechanism.

Step 2: Financial Closure

Once lenders commit, the project achieves financial closure, a milestone where all debt and equity commitments are in place. This is typically required within a defined period after PPA signing.

Step 3: Drawdown During Construction

The term loan is drawn in tranches matching construction milestones: site preparation, module delivery, inverter installation, commissioning. Each drawdown requires EPC progress certificates and disbursement requests.

Step 4: Moratorium Period

After commissioning, a 6-month to 1-year moratorium applies. During this period, only interest is paid; principal repayment is deferred. This allows the plant to ramp up generation and stabilise cash flow before debt service begins.

Step 5: Amortisation

Principal plus interest is repaid in equal quarterly or monthly installments over the remaining loan tenure. Early years are interest-heavy; later years are principal-heavy.

Step 6: Refinancing (Optional)

Some projects refinance term loans after 5-7 years when project risk has reduced, potentially securing lower rates or better terms.

Working Capital Lifecycle

Step 1: Facility Sanction

A revolving working capital facility is sanctioned based on projected operating expenses and cash flow cycles. For a 100 MW plant, this is typically Rs 1-3 crore.

Step 2: Monthly Drawdowns

As operational bills arrive (O&M invoices, insurance premiums, salaries), the facility is drawn. The outstanding balance fluctuates month to month.

Step 3: Monthly Repayment

PPA revenue is received monthly (or as per PPA terms). The working capital drawdown is repaid from this revenue. The facility is then available for redraw.

Step 4: Annual Renewal

The facility is reviewed and renewed annually based on the project’s operating track record and the sponsor’s credit standing.

Visual Explanation

Real-World Example

100 MW Solar IPP in Rajasthan

A developer wins a 100 MW SECI tender at Rs 2.50/kWh. The project requires Rs 500 crore total investment.

Term Loan Structure:

• Loan amount: Rs 375 crore (75% of project cost)
• Interest rate: 10% per annum
• Tenure: 15 years
• Moratorium: 1 year (interest only)
• Repayment: Quarterly equal installments after moratorium

Year 1 (Moratorium):

• Interest paid: Rs 37.5 crore
• Principal: Rs 0
• Outstanding: Rs 375 crore

Year 5:

• Interest: Rs 28 crore
• Principal: Rs 22 crore
• Outstanding: Rs 285 crore

Year 10:

• Interest: Rs 16 crore
• Principal: Rs 34 crore
• Outstanding: Rs 110 crore

Year 15:

• Final principal: Rs 30 crore
• Outstanding: Rs 0

Total interest over 15 years: Rs 240-260 crore

Working Capital Facility:

• Sanctioned: Rs 2.5 crore
• Monthly O&M: Rs 40 lakh
• Monthly PPA revenue: Rs 1.05 crore
• Peak working capital usage: Rs 1.8 crore (during insurance renewal quarter)
• Average outstanding: Rs 80 lakh
• Annual interest cost: Rs 8 lakh

The term loan dominates project finance, but the working capital facility ensures smooth operations without cash flow stress.

Technical Specifications / Benchmarks

Benefits / Advantages

• Leverage Enhancement: Term loans at 70-75% LTV amplify equity returns, making solar projects attractive to investors.
• Predictable Debt Service: Fixed amortisation schedules enable accurate long-term financial planning.
• Construction Risk Coverage: Term loan drawdowns match construction milestones, ensuring funding availability when needed.
• Operational Flexibility: Working capital revolving facilities adapt to seasonal and cyclical cash flow variations.
• Tax Shield: Interest on both instruments is tax-deductible, reducing effective cost of debt.
• Moratorium Protection: The initial interest-only period protects projects during ramp-up.
• Competitive Lender Market: Multiple PSU banks, IREDA, REC, PFC, and NBFCs compete for solar term loans, improving terms.
• Refinancing Option: As projects de-risk, refinancing can lower interest costs mid-tenure.
• Working Capital Efficiency: Revolving structures mean interest is paid only on amounts actually drawn, not the full sanction.
• Risk Segregation: Separating CAPEX and operational financing allows each to be optimised for its specific risk profile.

Limitations / Drawbacks

• Long-Term Interest Burden: A Rs 400 crore term loan at 10% over 15 years accumulates Rs 240-260 crore in total interest, significantly increasing project cost.
• Rigid Amortisation: Fixed repayment schedules offer limited flexibility if PPA revenue is delayed or disrupted.
• Collateral Requirements: Term loans require extensive security, asset mortgages, share pledges, escrow accounts, restricting developer flexibility.
• Covenant Burden: Lenders impose DSCR, leverage, and dividend covenants that constrain operational and financial decisions.
• Refinancing Risk: Projects relying on refinancing assumptions may face higher rates or unavailability when the time comes.
• Working Capital Renewal Risk: Annual renewal depends on sponsor credit and project performance; non-renewal can disrupt operations.
• MAT Interaction: For projects claiming 80-IA, interest deductions reduce taxable income but MAT may still apply on book profits.
• Forex Exposure: ECB term loans expose projects to currency fluctuation risk if revenues are in INR.
• Documentation Complexity: Project finance term loans involve 200+ page agreements, multiple security documents, and extensive legal costs.
• Concentration Risk: Over-reliance on a single lender or lender group creates vulnerability if that lender faces stress.

Comparison Section

Applications

Utility-Scale Solar Parks (100 MW+): Term loans are the primary financing instrument, covering 70-75% of Rs 400-500 crore project costs. Working capital is smaller but essential for O&M continuity.

Commercial & Industrial (C&I) Solar (100 kW - 5 MW): Term loans finance CAPEX model installations. Working capital needs are minimal due to smaller scale and simpler operations. The inverter and hardware sizing behind these CAPEX estimates typically follows a C&I solar solution design spec before the loan amount is finalised.

OPEX/RESCO Model: Under the OPEX model, the RESCO developer uses term loans for plant CAPEX and working capital for operations. The consumer pays only per-unit charges with zero upfront investment.

Group Captive Arrangements: The captive SPV raises term debt for the plant and working capital for operations. Multiple consumers share the power and the cost stack.

PM-KUSUM Component A: Farmers and cooperatives access term loans through NABARD and cooperative banks for solar pump and decentralised plant installations.

Residential Rooftop (PM Surya Ghar): Homeowners typically do not use project finance term loans. Instead, they may use personal loans or the PM Surya Ghar subsidy to reduce upfront cost.

Industry Standards & Regulations

Reserve Bank of India (RBI) Guidelines: RBI regulates bank lending norms, including exposure limits, asset classification, and provisioning requirements for solar project loans.

IREDA Financing Norms: IREDA, India’s dedicated renewable energy financier, has standardised term loan terms for solar projects including interest rates, tenure, and security requirements.

SEBI Infrastructure Investment Trust (InvIT) Regulations: Provides an alternative to traditional term loans by allowing projects to raise capital through listed InvITs.

Income Tax Act Provisions: Sections 80-IA, 32 (Accelerated Depreciation), and 115JB (MAT) interact with debt financing structures. Interest deductions reduce taxable income.

Indian Contract Act 1872: Governs enforceability of loan agreements, security documents, and escrow arrangements.

SARFAESI Act 2002: Enables lenders to enforce security interest in project assets in case of default.

India-Specific Context

India’s solar term loan market has evolved from a niche, high-rate segment in 2010 to a mature, competitive financing avenue in 2026. Several factors drive this transformation:

Policy Stability: Schemes like JNNSM, PM Surya Ghar, and PM-KUSUM have provided long-term policy visibility, reducing lender risk perception.

Lender Competition: IREDA, REC, PFC, SBI, Bank of Baroda, Canara Bank, and multiple NBFCs actively compete for solar term loans. This has compressed rates from 13-14% in 2015 to 9-11% in 2026.

Track Record: Over 85 GW of installed solar capacity in India by 2026 has built a substantial performance database. Lenders now have confidence in solar generation predictability and O&M reliability.

Gujarat Context: As Gujarat’s #1 ranked PM Surya Ghar installer, Heaven Green Energy works with multiple lenders to structure optimal financing for C&I and industrial solar projects across UGVCL, MGVCL, PGVCL, and DGVCL jurisdictions.

Working Capital Norms: Indian banks typically sanction working capital at 20-25% of projected annual operating expenses. For solar, this is conservative given the predictable revenue stream.

ECB Route: Some large developers access External Commercial Borrowing at lower rates (LIBOR + 200-300 bps), though forex exposure must be hedged.

Future Trends

Green Bonds: Solar developers are increasingly accessing green bond markets for term financing at rates competitive with or better than traditional bank loans. SEBI’s green bond framework supports this trend.

Blended Finance: Multilateral agencies are blending concessional debt with commercial debt to reduce overall project cost, particularly for distributed solar and rural projects.

Digital Lending: Fintech platforms are emerging to streamline working capital for small-scale solar installers and O&M providers, reducing paperwork and approval times.

InvITs as Alternative: Infrastructure Investment Trusts offer an equity-like alternative to term loans, allowing developers to recycle capital while retaining operational control.

ESG-Linked Loans: Term loans with interest rates tied to ESG performance metrics (safety, gender diversity, carbon intensity) are gaining traction among international lenders.

Shorter Tenors for Distributed Solar: As distributed solar de-risks, lenders may offer 10-12 year tenors for C&I projects, down from 15-18 years for utility-scale.

Common Mistakes & Misconceptions

• Mismatching Loan Tenor with PPA Term: A 12-year term loan against a 25-year PPA leaves refinancing risk in year 12. Match tenor to project life or plan for refinancing.
• Inadequate Moratorium: Construction delays are common. A 6-month moratorium may be insufficient if commissioning slips. Negotiate 12 months where possible.
• Over-Reliance on Working Capital: Working capital is for short-term cycles, not permanent capital needs. Using WC for CAPEX creates a dangerous maturity mismatch.
• Ignoring Refinancing Risk: Assuming refinancing will be available on better terms is speculative. Model base case without refinancing.
• Underestimating Total Interest Cost: A Rs 400 crore loan at 10% over 15 years costs Rs 240-260 crore in interest. This must be fully modelled in project economics.
• Neglecting Covenant Compliance: Breaching DSCR or leverage covenants can trigger acceleration. Monitor compliance proactively.
• Confusing Fixed vs Floating Rates: Fixed rates provide certainty; floating rates (linked to MIBOR) may start lower but carry upside risk. Understand the trade-off.
• Poor Escrow Structuring: Weak escrow arrangements reduce lender security and can lead to higher interest rates or loan rejection.
• Assuming All Lenders Are Equal: IREDA offers specialised renewable expertise; PSU banks offer branch networks; NBFCs offer speed. Choose based on project needs.
• Ignoring Tax Interactions: Interest deductions, 80-IA, and MAT interact in complex ways. Engage a chartered accountant for optimal structuring.

Key Takeaways

• Term Loan finances solar CAPEX (70-75% of project cost) with 12-18 year tenure, structured repayment, and asset-backed security.
• Working Capital bridges operating cash flow with 1-year revolving facilities, ensuring O&M continuity and bill payment.
• Moratorium periods (6-12 months) protect projects during ramp-up before principal repayment begins.
• Interest rates have compressed to 9-11% for term loans and 8-10% for working capital, reflecting market maturity.
• Major lenders include PSU banks (SBI, BoB, Canara), IREDA, REC, PFC, NBFCs, and multilateral agencies.
• Tax efficiency: Interest on both instruments is deductible, stacking with 80-IA and Accelerated Depreciation for comprehensive optimisation.
• DSCR maintenance is critical, lenders require 1.20x to 1.35x minimum coverage, meaning project cash flow must exceed debt service by 20-35%.
• Working capital for a 100 MW plant is modest (Rs 1-3 crore) but essential for smooth operations.
• Refinancing can improve terms mid-tenure but should not be assumed in base-case project economics.
• Professional structuring by experienced solar finance advisors maximises debt capacity while preserving operational flexibility.

Frequently Asked Questions

What is a term loan? A term loan is long-term debt financing the capital cost of a solar project. Tenure is 12 to 18 years for utility-scale, matching the project’s economic life. Repayment is per a fixed schedule. The loan is drawn during construction and repaid through PPA revenue.

What is working capital? Working capital is short-term debt financing day-to-day operating expenses (payments to vendors, employees, utilities). Tenure is typically 1 year (revolving). Used to bridge cash flow gaps between revenue receipt and expense payment.

Why are both needed? Term loan finances the asset (the solar plant). Working capital finances operations. Both serve distinct purposes. Most operating businesses need both. For project-finance solar, term loan dominates; working capital is smaller.

What’s the typical interest rate? Term loan for solar: 9% to 11% per annum. Working capital: 8% to 10% per annum. Specific rates depend on lender, project quality, sponsor profile.

What is the typical loan tenure? Term loan for utility-scale solar: 12 to 18 years. Working capital: 1 year revolving, renewed annually. For OPEX/RESCO: similar structure for the RESCO developer.

How is term loan repaid? From project’s PPA revenue per the loan amortisation schedule. Equal periodic installments (typically quarterly or monthly) of principal and interest. The cash waterfall ensures debt service has priority.

How is working capital used? For operational payments: vendor invoices, employee salaries, utility bills, insurance premiums, O&M payments. The revolving facility is used and repaid as cash flow cycles.

Are both secured? Term loan typically secured by project assets (mortgage on land/plant, charge on assets, escrow accounts). Working capital secured by current assets (receivables, inventory). Specific security depends on lender.

What’s the LIBOR/MIBOR component? Working capital interest may have a floating component (linked to MIBOR, REPO rate). Term loan interest is typically fixed or partially fixed. Some structures combine both.

Does solar need working capital? Yes, but smaller than CAPEX. Operating expenses (O&M, insurance) need cash before PPA revenue arrives. Working capital bridges this. Typical solar working capital: Rs 1 to Rs 3 crore per 100 MW.

How is working capital used in OPEX/RESCO? The RESCO developer uses working capital for operations. Term loan finances the plant CAPEX. Working capital finances ongoing operations. Same structure as utility-scale.

What is moratorium period? Initial period where no principal repayment is required (typically interest-only). Common for solar term loans: 6 months to 1 year moratorium, allowing construction and ramp-up before principal repayment begins.

Related Resources

• OPEX vs CAPEX Solar Models
• Solar Payback Period Guide
• Accelerated Depreciation for Solar
• Solar EPC Services
• Commercial Solar Solutions
• Industrial Solar Solutions
• Solar Calculator

Related Glossary Terms

• IRR
• DSCR for Solar Projects
• Solar Financial Closure
• Escrow Account in Solar PPA
• Payment Security Mechanism
• Power Purchase Agreement
• CAPEX Model
• OPEX Model
• Levelised Cost of Energy
• Bankable EPC
• Turnkey EPC
• Accelerated Depreciation
• 80-IA Solar
• MAT Credit

Sources & References

• Reserve Bank of India (RBI) Master Direction on External Commercial Borrowings
• IREDA Solar Project Finance Guidelines and lending norms
• REC Limited and PFC Limited project finance frameworks
• SEBI Infrastructure Investment Trust Regulations, 2014
• Ministry of Finance, Government of India Budget Documents (various years)
• CRISIL Solar Sector Credit Reports and industry analysis
• Indian Banks’ Association (IBA) model loan agreements for renewable energy
• Central Board of Direct Taxes (CBDT) notifications on tax treatment of solar projects
• Securities and Reconstruction of Financial Assets and Enforcement of Security Interest (SARFAESI) Act, 2002