India’s renewable energy market is moving beyond the cheapest solar tariff.
As energy storage costs decline and electricity delivery obligations become more demanding, the key question is no longer simply, “What is the lowest ₹/kWh?” Instead, it is becoming increasingly important to ask: What does reliable clean power cost when it is needed?
Firstgreen’s latest analysis examines how renewable energy procurement can account for not just the cost of generating electricity, but also the timing, reliability and flexibility of its delivery.
Beyond the Lowest Solar Tariff
The levelised cost of energy (LCOE) is an important metric for comparing the cost of electricity generation over a project’s lifetime. However, the lowest generation cost does not necessarily translate into the lowest cost of delivering electricity at a specific time.
As renewable energy procurement evolves, buyers and developers must consider additional factors, including storage costs, dispatch requirements, curtailment and the allocation of power purchase agreement (PPA) risks.
The commercial value of a renewable energy project increasingly depends on what it delivers, when it delivers it and how reliably it meets contractual obligations.
What Determines the Cost of Reliable Clean Power?
Firstgreen’s analysis considers several factors that influence the economics of renewable energy contracts.
- Solar LCOE: The levelised cost of generating solar electricity over a project’s lifetime.
- Battery Energy Storage System (BESS) LCOS: The levelised cost of storing and delivering electricity through a battery system.
- 15-minute dispatch: The ability to assess electricity delivery and market requirements at 15-minute intervals.
- Curtailment recovery: The potential to recover or shift otherwise curtailed energy, subject to technical and contractual conditions.
- Storage duration: How long a storage system can deliver electricity to meet demand.
- Firming premium: The additional cost associated with making variable renewable generation more consistent or dependable.
- PPA risk allocation: How contractual and commercial risks are distributed between buyers and developers.
Considering these factors together provides a broader basis for evaluating renewable energy procurement options.
Different Contracts Deliver Different Products
One of the central takeaways from Firstgreen’s analysis is that different renewable energy contracts should not be treated as interchangeable products.
Solar-only contracts, peak-energy arrangements, Firm and Dispatchable Renewable Energy (FDRE) contracts, storage-service agreements and commercial and industrial (C&I) contracts can differ significantly in their delivery requirements and risk profiles.
Each contract structure offers a different combination of energy, timing, availability and flexibility. Consequently, the pricing approach should reflect the specific product being procured rather than relying on a single benchmark tariff.
The Next Generation of Power Purchase Agreements
As India’s renewable energy market evolves, PPAs will need to reflect more than the annual quantity of electricity supplied.
Future procurement frameworks may place greater emphasis on:
- Time: When electricity is delivered.
- Firmness: How consistently contractual delivery requirements are met.
- Availability: Whether power is available when required.
- Flexibility: The ability to respond to changing demand and market conditions.
These considerations can help buyers and developers evaluate the cost of meeting actual electricity needs rather than focusing exclusively on the lowest headline tariff.
Pricing Clean Power for What It Delivers
The transition in renewable energy procurement is ultimately about recognising that electricity generation and reliable electricity delivery are not the same product.
As storage technologies develop and delivery obligations evolve, project economics and contract structures will need to account for the value of time, reliability and flexibility.
The next generation of PPAs must procure time, firmness, availability and flexibility—not just annual energy.
Explore Firstgreen Research
Firstgreen’s latest analysis compares solar generation costs, battery storage economics, dispatch requirements, curtailment recovery, storage duration, firming premiums and PPA risk allocation.
The research explores why different renewable energy procurement models require different approaches to pricing and contract design.
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