Green energy open access: what changed and what to check

For years, many industrial consumers wanting renewable power through open access found the process complicated: high eligibility thresholds, long approval times, and charges that varied widely between states. India's green energy open access framework was introduced to address some of these issues. Understanding what it set out to do — and how it is implemented locally — helps consumers evaluate their options.

What the framework aimed to do

The Ministry of Power issued rules in 2022 to promote green energy through open access, which have since been amended. Their broad aims included:

• Lower eligibility thresholds — allowing smaller consumers to access green power through open access than under conventional open access
• Streamlined procedures — a central registry and time-bound approvals
• Clarity on charges — rules on which charges apply to green energy open access, and limits on some surcharges
• Banking provisions — guidance on banking of green energy
• Green tariffs — enabling consumers to request green power from their distribution company
• Certification — providing for certification of green energy consumption

The specific thresholds, charges and conditions are set out in the rules and their amendments. Because they have changed since first issued, read the current consolidated rules rather than earlier summaries.

How it works in practice

National rules set the framework, but state regulators implement open access through their own regulations. The practical position for a consumer in Tamil Nadu depends on:

• The Tamil Nadu Electricity Regulatory Commission's green energy open access regulations and orders
• Procedures of the distribution and transmission utilities
• The state nodal agency for open access applications

States have implemented the framework at different speeds and with different details.

Points to check

Eligibility

• What contracted demand or sanctioned load threshold applies to your connection?
• Does it differ for captive and third-party arrangements?

Procedure

• Where is the application made?
• What documents are needed?
• What are the approval timelines?

Charges

• Which network charges apply?
• Is cross-subsidy surcharge applicable, and at what level?
• Is additional surcharge applicable?
• Are any charges waived or reduced for green energy?

See landed cost of open access power.

Banking

• Is banking allowed, and for what period?
• What are banking charges?
• Are there time-of-day restrictions?

See energy banking explained.

Contract duration and scheduling

• Minimum contract duration for open access
• Scheduling, forecasting and deviation requirements

Certification

• How is green energy consumption certified for your reporting? See renewable power and sustainability reporting.

Who can benefit

The framework is designed to help:

• Smaller industrial and commercial consumers previously below open access thresholds
• Consumers with sustainability targets seeking documented green power
• Companies with multiple facilities combining supply routes. See group captive for multiple facilities.

Green tariffs from the utility

The framework also provided for distribution companies to supply green power to consumers who request it, at a green tariff. This can be simpler than open access for some consumers. Check availability and pricing with the distribution company.

Comparing routes

See open access vs group captive.

Regulatory risk

Rules have been amended since they were introduced and may change again. When signing long-term contracts:

• Understand which rules apply at signing
• Check whether contracts protect against changes
• Test economics under less favourable assumptions

Common mistakes

• Relying on early summaries of the rules without checking amendments
• Assuming national provisions apply identically in every state
• Ignoring state-level charges and banking rules
• Underestimating procedural requirements and timelines
• Not checking how green energy will be certified for reporting

A practical starting sequence

1. Confirm your connection's eligibility under current state regulations
2. Estimate landed cost using current charges and banking rules
3. Compare with on-site solar, group captive and any green tariff
4. Shortlist developers and check their track record
5. Review contract terms, especially change in law and banking
6. Prepare the application with complete documents

Keeping up to date

Because both the national rules and state regulations have been revised more than once, it helps to keep a short log of which version of each rule your business case relied on. When a new amendment or order is issued, compare it with that log to see whether any assumption — eligibility, charges, banking — has changed.

How we help

Through open access and group captive solar work with industrial consumers, we help consumers understand which routes are available to them and coordinate off-site project development. Regulatory interpretation should be confirmed with the regulator, utilities and qualified advisers.