Adani appeal for tariff revision rejected in Tamil Nadu

Facebook
Twitter
LinkedIn
Reddit
Email
Tamil nadu was beset by cyclones and heavy rain last year, which damaged solar plants and caused delays. Flickr: Gemma Amor

The regulator in the Indian state of Tamil Nadu has rejected Indian conglomerate Adani’s call for a revaluation of the tariffs it is set to receive for developing the world’s largest solar plant, Adani sources have told Mercom Capital Group.

PV projects commissioned in the state before 31 March 2016 were due to receive a tariff of INR7.01/kWh (US$0.103) from Tamil Nadu Generation and Distribution Corporation (TANGEDCO), but this would go down to just INR5.1/kWh for any delayed projects.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Adani Green Energy, a subsidiary of Indian conglomerate Adani Group, completed a 648MW solar PV plant costing INR45.6 billion (US$679 million), however, while 360MW of this were commissioned before the deadline, 288MW were delayed following grid connection issues.

This delayed capacity was completed by Adani subsidiaries Kamuthi Solar Power (216MW) and Ramnad Renewable Energy (72MW), but both entities also filed appeals to the the Tamil Nadu Electricity Regulatory Commission (TNERC), claiming that a cyclone and heavy, extended rainfall in the region caused significant damages and delayed project execution. All kinds of damage from the same extreme weather were reported widely at the time.

Both companies claimed they had actually completed the projects ahead of the deadline, but the necessary substations had not been provided by TANGEDCO resulting in completion after the deadline.

Nevertheless, the Adani project will now receive the lower tariff after TNERC rejected the appeals, according to Mercom.

Kamuthi Solar Power and Ramnad Renewable Energy have now also filed pleas as a Dispute Resolution Petition, which will be taken on at the tribunal.

Along with the lower tariff issues, Tamil Nadu also happens to be the first state in India where solar developers experienced curtailment, It now also has the largest installed capacity of any state.

Yesterday Adani announced plans to build up to two solar projects of 100-200MW in Australia.

Read Next

July 2, 2026
State-owned coal producer Coal India Limited (CIL) has secured a contract worth INR28.3 billion (US$296 million) to develop a 600MW PV project at the Jalaun Solar Park in the northern state of Uttar Pradesh, India.
July 2, 2026
India's MNRE has urged the power regulator to retain separate 'Deviation Settlement Mechanism' rules for solar and wind projects to protect them against increased financial risks.
June 29, 2026
SAEL Industries has broken ground on a 10GW integrated solar manufacturing facility in Jewar, Uttar Pradesh.
June 26, 2026
Waaree Renewable Technologies has acquired a 55% stake in Associated Power Structures for INR12.25 billion (US$129 million).
June 25, 2026
NLC India and OREDA have signed a joint venture agreement to develop 1,000MW of renewable energy capacity in Odisha.
June 23, 2026
German solar PV equipment manufacturer RENA Technologies has signed a supply agreement for solar cell production equipment with Indian manufacturer Emmvee Energy.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
April 20, 2027
Istanbul, Türkiye