Delhi High Court: Conduct Constitutes Waiver, Reverses Ruling in IREDA GBI Scheme Dispute

In a significant ruling on the principles of waiver and acquiescence, the Delhi High Court has allowed an appeal by the Indian Renewable Energy Development Agency Limited (IREDA), setting aside a Single Judge's decision that had granted relief to the Chhattisgarh State Power Distribution Co. Ltd. (CSPDCL) in a long-running dispute over the Generation Based Incentive (GBI) Scheme.

A Division Bench comprising the Chief Justice and Justice Tushar Rao Gedela held that while a committee formed under the scheme had overstepped its authority, CSPDCL had, by its subsequent conduct, waived its right to challenge the revised GBI calculation. The judgment underscores the critical importance of timely and unequivocal legal challenges and serves as a cautionary tale for entities that passively accept decisions, even if legally questionable.

The core of the dispute revolved around the correct tariff rate to be used for calculating incentives under the Ministry of New and Renewable Energy’s 2010 "Guidelines for Rooftop PV & Small Solar Power Generation Program." The Court found that CSPDCL's failure to challenge the committee's decision, its acceptance of the revised calculations in communications, and the significant delay in approaching the High Court were fatal to its claim.

Background of the Dispute: A Scheme to Incentivize Solar Power

To promote the adoption of smaller solar power plants, the Ministry of New and Renewable Energy introduced the Generation Based Incentives (GBI) scheme in 2010. Under this framework, a Distribution Utility, such as CSPDCL, would purchase power from solar project proponents and could then claim a GBI from the designated Program Administrator, IREDA.

The incentive was calculated based on a clear formula outlined in Clause 1 of the scheme's Guidelines:

GBI = Tariff determined by CERC – Base Rate

The Base Rate was fixed at ₹5.50/kWh for 25 years. The crux of the conflict lay in determining the correct "Tariff." When CSPDCL was registered under the scheme in September 2010, the tariff fixed by the Central Electricity Regulatory Commission (CERC) was ₹17.91/kWh, while the tariff determined by the Chhattisgarh State Electricity Regulatory Commission (CSERC) was ₹15.84/kWh.

Initially, IREDA calculated and processed the GBI based on the higher CERC tariff. However, in June 2012, IREDA revised its position, stating that the applicable rate was the lower CSERC tariff of ₹15.84/kWh. It retrospectively adjusted the payments, asserting that an excess amount of ₹16,06,362 had been released and would be reconciled from future claims.

Litigation History: From Committee to High Court

The dispute resolution mechanism provided under Clause 8 of the Guidelines empowered a Ministry-constituted Committee to resolve any difficulties in implementation or interpretation. This Committee, in a decision dated March 15, 2013, sided with IREDA, holding that the tariff applicable at the time of project registration (₹15.84/kWh) would be used for GBI calculation for the entire 25-year period.

CSPDCL did not directly challenge this Committee decision. Instead, it pursued relief before the CSERC, which rejected its petition in January 2015. An appeal to the Appellate Tribunal for Electricity (APTEL) met the same fate, with the Tribunal dismissing it in September 2015.

It was only in 2017, nearly two years after the APTEL order and four years after the Committee's decision, that CSPDCL filed a writ petition before a Single Judge of the Delhi High Court. In a decision dated May 21, 2025, the Single Judge allowed the petition, prompting the present appeal by IREDA.

Arguments Before the Division Bench

The Additional Solicitor General (ASG) arguing for IREDA advanced two primary arguments:

1. Finality of Committee Decision: Clause 8 of the Guidelines explicitly stated that the Committee's decisions were "final and binding." Since CSPDCL never challenged the 2013 decision, it had attained finality.
2. Waiver and Acquiescence: CSPDCL’s conduct demonstrated a clear waiver of its rights. The ASG pointed to a letter from June 2013 where CSPDCL accepted the tariff of ₹15.84/kWh. Furthermore, the significant delay in filing the writ petition, without a proper explanation, meant the claim was barred by estoppel, acquiescence, and laches.

Conversely, the Senior Counsel for CSPDCL argued that the Committee's decision was ultra vires , or beyond its legal power. Clause 8 only allowed the Committee to remove implementation difficulties, not to rewrite the core formula of the Guidelines. The Guidelines explicitly referred to the "tariff determined by CERC," and the Committee could not substitute this with the SERC tariff. On the issue of waiver, it was contended that CSPDCL had continuously agitated the issue across various forums, negating any suggestion of abandonment of its rights.

High Court's Observations: A Tale of Two Issues

The Division Bench systematically analyzed two central questions: the legality of the Committee's decision and the applicability of the doctrine of waiver.

1. The Committee's Decision Was Untenable

The Court agreed with CSPDCL on the first issue, finding that the Committee had indeed exceeded its jurisdiction. It observed:

"Clause 8 of the Guidelines merely empowered the committee to remove difficulties in the implementation and interpretation of the Guidelines. Such a power could not be exercised to change or alter any clause of the Guidelines or the MOU."

The Bench noted that since the Guidelines and the associated MOU expressly mandated the use of the CERC-determined tariff, the Committee was not empowered to substitute it with the SERC tariff. Consequently, the Court declared the Committee's decision of March 15, 2013, as legally untenable.

2. CSPDCL's Claim Barred by Waiver and Acquiescence

Despite finding in CSPDCL's favour on the first point, the Court's decision ultimately turned on the second issue. The Bench conducted a thorough examination of CSPDCL's conduct following the dispute. It defined the legal principles at play, noting that waiver is the "abandonment of a right in such a way that the other party is entitled to plead abandonment." This abandonment must be intentional and can be inferred from conduct inconsistent with the continuance of the right.

The Court identified several actions and inactions by CSPDCL that collectively amounted to a waiver of its claim:

• Failure to Challenge: CSPDCL never directly challenged the Committee's 2013 decision, which was the root of its grievance.
• Acceptance of Computations: In subsequent communications, CSPDCL accepted IREDA’s GBI computations based on the lower tariff rate.
• Unexplained Delay: The writ petition was filed in 2017, after a significant and unexplained delay, which the Court termed as laches.

The Bench concluded that this pattern of conduct demonstrated a clear acquiescence to IREDA's position. The Court observed:

"Waiver can also be inferred from the conduct of the party which is inconsistent with its continuance of right. Acquiescence means tacit or passive acceptance."

Based on this analysis, the Court held that CSPDCL had, through its own actions, waived its right to enforce the original GBI calculation formula. Therefore, the writ petition filed before the Single Judge should not have been entertained.

The appeals filed by IREDA were allowed, and the decision of the Single Judge was set aside, denying relief to CSPDCL. This judgment reinforces a foundational legal principle: rights, even if legally sound, can be lost through inaction and inconsistent conduct.