Consumer and state eligibility
Connection type, contracted demand, voltage, state regulations, DISCOM process, meter readiness and any aggregation rules.
Off-site renewable procurement
Model the landed cost, not the headline tariff.
Open access allows an eligible consumer to procure electricity from an off-site generator through the grid. The decision must be made state by state and connection by connection because eligibility, banking, transmission, wheeling, losses, cross-subsidy surcharge, additional surcharge, scheduling and captive compliance can change the landed economics.
Discuss your siteGeneration location
Off-site
Power is generated away from the consuming facility and scheduled through the grid.
Primary comparison
Landed ₹/kWh
The PPA tariff alone excludes network charges, losses, surcharges and settlement effects.
Possible structures
Third-party or captive
Ownership, consumption and regulatory obligations differ materially.
Rules
State-specific
Central rules establish a framework, but state regulations and orders control implementation.
When off-site procurement should be evaluated
The right structure depends on the facility's bills, interval load, roof or land, connection agreement, operating schedule, credit profile and current state rules. Sun Wave validates those inputs before presenting savings or generation estimates.
The facility's renewable demand is larger than the usable rooftop can serve.
The consumer meets the applicable eligibility threshold and has a compatible metering arrangement.
Multiple sites or long operating hours justify a portfolio rather than a single rooftop asset.
The organisation can accept scheduling, energy-accounting and long-term contractual obligations.
The buyer can maintain captive ownership and consumption compliance if selecting a captive or group-captive route.
What a landed-cost and risk model must include
Energy and load matching
Hourly or time-block demand, project generation, banking limits, surplus, deficits, curtailment and forecast changes.
Network and statutory charges
Transmission, wheeling, SLDC, losses, banking, cross-subsidy surcharge, additional surcharge, duties and taxes using current orders.
Captive compliance
Ownership and annual consumption requirements, group allocation, monitoring, breach consequences and exit mechanics.
PPA and change in law
Tariff, escalation, scheduling, payment security, deemed generation, curtailment, force majeure and allocation of future charge changes.
Operational settlement
Scheduling, metering, deviation, monthly reconciliation, invoice data, dispute process and responsibilities across generator, trader and consumer.
From eligibility to monthly energy settlement
01
Collect consumer data
Gather connection agreements, 12 months of bills, interval load, sanctioned and contract demand, meter details and expansion plans.
02
Verify current rules and charges
Use the controlling SERC, DISCOM, STU and SLDC documents for the consumer state and proposed injection point.
03
Compare structures on one model
Calculate rooftop, third-party, captive and group-captive options using the same load, financing and risk assumptions.
04
Complete counterparty and project diligence
Review land, connectivity, commissioning programme, generation study, lender conditions, payment security and contract interfaces.
05
Secure approvals and operate
Complete applications, metering and scheduling, then reconcile scheduled, delivered, banked and billed energy each month.
Red flags in an open-access proposal
Figures shown in proposals should be project-specific and traceable to current bills, engineering outputs, equipment offers and controlling regulations. We do not publish guaranteed savings or tariffs without a defined site and contract.
A landed-cost claim that omits additional surcharge, losses, banking or SLDC charges.
A state waiver or exemption stated without the current order and its eligibility conditions.
A group-captive offer without a clear annual ownership and consumption compliance process.
A generation profile compared only with monthly units rather than interval demand.
A PPA that assigns every future regulatory change to the consumer without limits or termination options.
An operating model without responsibility for scheduling, reconciliation and deviation exposure.
Primary references
Frequently asked questions
What is open access electricity?+
Open access is a regulated route through which an eligible consumer procures electricity from a generator or supplier using the transmission and distribution network, subject to approvals, scheduling, charges and losses.
What is group captive solar?+
Multiple consumers hold equity in a captive generating company and consume power from it. The project must satisfy applicable ownership and consumption tests; failure can change surcharge liability.
What does landed cost include?+
It includes the energy tariff plus applicable transmission, wheeling, losses, SLDC, banking, cross-subsidy surcharge, additional surcharge, duties, taxes and operational settlement effects.
Is open access cheaper in every state?+
No. Rules, charges, banking and grid conditions vary. The answer depends on the consumer category, voltage, load profile, project, contract and current state orders.
Can rooftop and open access be combined?+
Often yes, subject to connection, metering and state rules. Rooftop can serve direct daytime load while off-site procurement addresses demand beyond the roof's capacity.
Build the decision from your real site data
Share the latest bills, load profile and site details. Sun Wave will identify the feasible structure, assumptions that need verification and the next engineering or commercial step.
Request a site assessment