Executive Summary
We often assume a Wind-Solar Hybrid solution is an automatic winner in corporate energy procurement. You see a green PPA tariff of ₹3.50 versus a Grid tariff at ₹8.50 and think the math is simple. It rarely is. Recently, I presented an Open Access case to the MD of a chemical giant in a large industrial state. On paper, transitioning from their Coal Captive Power Plant to a Wind-Solar Hybrid deal promised ₹18.07 Crores in annual gross savings. Most developers would have pushed for an immediate signature. Instead, we audited the Open Access regulations and uncovered a hidden grid penalty. Here is the exact boardroom math showing why an ₹18 Crore “win” turned into a ₹3.89 Crore net loss, and why the CFO ultimately chose to keep burning coal.
The Setup: The “Goldmine” on Paper
The chemical giant was running a 37 MW Coal Captive Power Plant (CPP) costing them ₹6.93 per unit. High carbon, high variable cost.
The proposal was to switch to a Wind-Solar Hybrid solution to decarbonize operations and dramatically reduce power costs. On paper, the deal looked like an absolute goldmine:
- Old Power Cost (Coal CPP): ₹6.93/unit
- New Blended Cost (Wind-Solar): ₹5.17/unit
- Variable Saving: ₹1.76/unit
The math translated to massive Top-Line relief: ₹18.07 Crores in Total Gross Savings annually.
The Constraint: The Open Access Trap
If you stop at the per-unit savings, you sign a flawed contract. We stopped to look at the state’s Open Access regulations and the facility’s existing infrastructure.
The core constraint was the “pipe.” The facility’s current grid contract demand (10 MVA) was fully choked. To import this new Green Power, the factory was legally required to increase their Contract Demand by 13.7 MVA.
The Real Landed Cost: A ₹3.89 Crore Net Loss
When evaluating Open Access, the per-unit energy charge is only half the equation. You must account for the infrastructure tax and fixed liabilities. I presented the “Real Landed Cost” to the boardroom:
- The Gain: You save ₹18.07 Crores in energy bills via Renewable Energy.
- The Pain: You pay ₹15.32 Crores every year in fixed Contract Demand charges, plus a ₹6.63 Crores upfront hit in development charges.
The final verdict on the spreadsheet?
Instead of saving money, the project would generate a Net Loss of ₹3.89 Crores in the first year alone. Even worse, under the 26% Group Captive structure, it would trap ₹23.65 Crores of Equity in a loss-making asset with an undefined payback period.
The Verdict: Balance Sheet First
Faced with this data, the CFO pushed the paper away and said:
“Gaurav, the answer is No. We stay with Coal.”
The reality check for every Corporate Energy Consumer is this: Do not just look at the per-unit saving. A Wind-Solar Hybrid tariff of ₹3.50 is completely useless if the cost of the “pipe” (Fixed Grid Charges) eats your entire margin.
Sustainability must be sustainable for the Balance Sheet first. It is better to burn coal than to burn cash on a fundamentally flawed deal.
Next Steps for the C-Suite
If your company is actively evaluating an Open Access Term Sheet or a Group Captive Wind-Solar Hybrid proposal, do not sign a contract based purely on variable per-unit savings.
If you want us to run a Techno-Commercial Wealth Audit to stress-test your existing grid infrastructure, calculate your true landed cost, and expose any hidden fixed charges before you commit your equity:
In this session, we will audit your exact financial model so you can walk into your next Board meeting with a mathematically unassailable energy strategy.
About Infinia Solar
Infinia Solar is India’s leading renewable energy consultant.
We help Commercial and Industrial consumers procure the right renewable energy solutions, from the right developers, and on the right PPA terms.
We’ve served 60+ customers across 18 states, enabling 1.4 GW of open access and rooftop solar capacity, and have facilitated 150+ PPAs so far.
This has helped our customers reduce up to 50% of their electricity costs and replace up to 100% of their power with renewable energy.
We have also collaborated with 50+ developers, and our customers fondly refer to us as the ‘Amazon of the renewable energy industry.‘