Executive Summary
Open access enables consumers and generators to use transmission and distribution networks of licensees, promoting competition:
- Statutory basis: Sections 38-42, Electricity Act, 2003
- Eligibility: Above 1 MW (can be reduced by SERC)
- Charges: Transmission, wheeling, CSS, additional surcharge
- Purpose: Consumer choice, renewable promotion
- Regulatory approval: SLDC/RLDC scheduling
- Challenges: CSS and additional surcharge disputes
This guide examines open access framework, charges, and compliance requirements.
1. Statutory Framework
Electricity Act, 2003 Provisions
| Section |
Subject |
| Section 38 |
CTU to provide open access |
| Section 39 |
STU to provide open access |
| Section 40 |
Distribution licensee duties |
| Section 42 |
Open access in distribution |
Regulatory Framework
| Regulation |
Purpose |
| CERC Open Access Regulations |
Interstate transmission |
| SERC Open Access Regulations |
Intrastate transactions |
| Grid Code |
Scheduling procedures |
2. Types of Open Access
Short-Term Open Access
| Feature |
Specification |
| Duration |
Up to 1 month |
| Application |
To SLDC/RLDC |
| Charges |
Applicable charges |
| Scheduling |
Day-ahead/real-time |
Medium-Term Open Access
| Feature |
Specification |
| Duration |
3 months to 3 years |
| Application |
To nodal agency |
| Charges |
Applicable charges |
| Corridor allocation |
Based on availability |
Long-Term Open Access
| Feature |
Specification |
| Duration |
12-25 years |
| Application |
To CTU/STU |
| Charges |
Transmission charges |
| Corridor booking |
Dedicated capacity |
3. Open Access Charges
Components
| Charge |
Purpose |
| Transmission charges |
Use of transmission network |
| Wheeling charges |
Use of distribution network |
| Cross-subsidy surcharge |
Compensate DISCOM |
| Additional surcharge |
Stranded capacity compensation |
| Scheduling charges |
SLDC coordination |
| Deviation charges |
For schedule deviations |
Cross-Subsidy Surcharge
| Formula |
Components |
| Calculation |
(T - C) × Q |
| T |
Tariff for applicable category |
| C |
Cost of supply |
| Q |
Quantity of power |
4. Eligibility and Procedure
Consumer Eligibility
| Category |
Requirement |
| Contract demand |
Above 1 MW (state may reduce) |
| HT consumers |
Generally eligible |
| Captive consumers |
26% equity, 51% consumption |
Application Process
| Step |
Action |
| Application |
To SLDC/RLDC |
| Technical feasibility |
Assessment by licensee |
| Approval |
Open access grant |
| Scheduling |
Day-ahead schedule |
| Settlement |
Charges and deviation |
5. Renewable Energy Open Access
| Benefit |
Provision |
| Reduced/waived CSS |
For RE consumers |
| Additional surcharge |
Often waived |
| Banking |
Permitted in many states |
| RPO compliance |
Counts towards obligation |
Green Energy Open Access Rules, 2022
| Provision |
Effect |
| Threshold reduction |
100 kW minimum |
| Deemed approval |
If no response in 15 days |
| Uniform charges |
State-wise determination |
6. Disputes and Challenges
Common Issues
| Issue |
Nature |
| CSS calculation |
Methodology disputes |
| Additional surcharge |
Validity challenges |
| Standby charges |
Reasonableness |
| Banking |
Terms and conditions |
Forum
| Forum |
Jurisdiction |
| SERC |
Intrastate matters |
| CERC |
Interstate matters |
| APTEL |
Appeals |
7. Compliance Checklist
For Consumers
For Generators
8. Key Takeaways
- Consumer Choice: Open access enables procurement alternatives.
- Charges Matter: CSS and additional surcharge impact viability.
- RE Promotion: Reduced charges for renewable energy.
- Scheduling Essential: SLDC coordination mandatory.
- State Variations: Each state has different regulations.
Conclusion
Open access promotes competition and consumer choice in the electricity sector. While the framework enables alternatives to DISCOM procurement, the economic viability depends on applicable charges, particularly CSS and additional surcharge. Recent reforms favor renewable energy open access with reduced thresholds and charges.
