Open Access (India)

Key Takeaways

• Open Access = direct power procurement framework for large consumers.
• Typical threshold > 1 MW connected load.
• Solar Open Access locks in low tariffs from third-party generators.
• Wheeling + banking + cross-subsidy charges apply.
• State-specific rules; varies significantly across India.

How Open Access Works

A consumer who qualifies for Open Access does not need to be physically wired to the generator. Instead, the generator injects power into the shared grid at one point (often a remote solar or wind plant connected at the CTU / STU transmission level, or the local 33/11 kV network for smaller projects), and the consumer draws an equivalent amount at another point through their existing DISCOM connection. The DISCOM effectively “wheels” that power across its wires and levies wheeling charges, cross-subsidy surcharges, and — where the consumer’s draw and the generator’s output don’t match hour to hour — banking charges for the mismatch. Because the consumer is bypassing the DISCOM’s retail tariff and instead paying a negotiated PPA rate to the generator plus these regulatory charges, the commercial case for Open Access solar depends on how the resulting landed cost compares to the prevailing retail tariff in that state.

Each State Electricity Regulatory Commission (an SERC, such as the GERC in Gujarat) sets its own connectivity threshold, wheeling and banking charge structure, and approval process, which is why the same C&I load can find Open Access highly attractive in one state and largely unworkable in another.

Related Reading

Open Access sits alongside net metering and RESCO/PPA structures as one of the ways large Indian consumers reduce their solar-adjusted power bill, and the eligibility, wheeling, and banking rules described above are exactly what shape how fast a project clears interconnection. For teams tracking how these regulatory timelines play out state by state, Solar Permits India: State-Wise Processing Times 2026 breaks down DISCOM approval and net-metering timelines across major states — useful context when comparing an Open Access route against a rooftop net-metered alternative. If your project also needs the underlying interconnection and structural paperwork sorted out once an Open Access connection is approved, our MW-scale project management consultancy covers that coordination end to end.