Solapur Factory Trims Annual Power Costs by ₹5 Million with Rooftop Solar

MSEDCL Invites Bids for Battery Energy Storage Systems

APTEL Extends Deadline for 72.6 MW of Uncommissioned Wind Capacity

GridStor Secures $220 Million for 400 MWh Arizona Battery Project

South Korean Power Exchange Invites Bids to Procure 6.6 GWh Storage Capacity

Digital Consumer Verification Now Must for PM Surya Ghar Vendor Agreements

GESCOM Invites Bids for Rooftop Solar Projects on Government Buildings

Karnataka High Court Strikes Down Land Use Limits on Clean Energy

US Solar Module Prices Jump Over 40% After Section 232 Measures

EV Firm Ultraviolette Raises $85 Million from Yali Capital, TDK Ventures

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					</table>India’s average solar irradiance <a href="https://www.mercomindia.com/satellite-ground-irradiance-gaps-raise-risks-for-solar-projects-in-india" target="_blank" rel="noopener">ranges</a> from 3.5 kWh/m²/day to 5.5 kWh/m²/day. Differences between satellite-derived irradiance estimates and actual ground conditions can create uncertainty in generation forecasts and financial models, affecting project economics and investment decisions.
Battery energy storage system developers with existing connectivity can <a href="https://www.mercomindia.com/battery-storage-projects-may-gain-from-rule-change-on-charging-discharging" target="_blank" rel="noopener">increase</a> the storage duration of their projects without seeking additional grid connectivity capacity under a new procedure issued by the Central Transmission Utility of India.
The Ministry of Power <a href="https://www.mercomindia.com/power-ministry-approves-transmission-line-to-integrate-3-gw-renewables" target="_blank" rel="noopener">authorized</a> POWERGRID to lay an overhead transmission line for the integration of additional renewable energy potential at Davanagere and Bellary in Karnataka.
REC Power Development and Consultancy <a href="https://www.mercomindia.com/recpdcl-announces-winner-of-400-kv-renewable-transmission-auction" target="_blank" rel="noopener">announced</a> the winner of the auction to develop and operate an intrastate electricity transmission system in Maharashtra to evacuate power from renewable energy projects.
The Maharashtra State Electricity Distribution Company <a href="https://www.mercomindia.com/maharashtra-announces-winners-of-4-gwh-battery-energy-storage-auction" target="_blank" rel="noopener">announced</a> the winners of its auction to set up 2,000 MW/4,000 MWh of battery energy storage systems. The work is divided into two parts.
NTPC Renewable Energy <a href="https://www.mercomindia.com/ntpc-rel-invites-bids-for-wind-project-in-andhra-pradesh" target="_blank" rel="noopener">invited</a> bids to supply and install wind turbine generators for an interstate transmission system-connected wind energy project in Kurnool, Andhra Pradesh. The bid submission deadline is October 19, 2026. Bids will be opened on the same day.
Bharat Petroleum Corporation <a href="https://www.mercomindia.com/bpcl-invites-bids-to-install-rooftop-solar-project-in-madhya-pradesh" target="_blank" rel="noopener">invited</a> bids to install a grid-connected rooftop solar project at its Bina Refinery Residential Complex in Sagar district, Madhya Pradesh. The 1 MWp solar project will be developed under captive mode. The last date to submit bids is October 10, 2026. The technical bids will be opened the same day.
Mahatma Phule Renewable Energy and Infrastructure Technology <a href="https://www.mercomindia.com/mahapreit-invites-bids-for-2-mw-solar-projects-in-goa" target="_blank" rel="noopener">invited</a> bids to develop approximately 2 MW of grid-connected flexible solar projects in Goa. The last date to submit bids is October 8, 2026. Bids will be opened on October 9.
The Solar Energy Corporation of India <a href="https://www.mercomindia.com/seci-tenders-4-mw-rooftop-solar-projects-at-central-agricultural-university" target="_blank" rel="noopener">invited</a> bids to set up 4,083.75 kW of grid-connected rooftop solar projects under the renewable energy service company model at the constituent colleges/institutions of the Central Agricultural University, Imphal – Northeastern Region. Bids must be submitted by November 2, 2026. Bids will be opened on November 5.
Hyderabad-based solar module and cell manufacturer Premier Energies <a href="https://www.mercomindia.com/premier-energies-commissions-7-gw-solar-cell-plant-in-andhra-pradesh" target="_blank" rel="noopener">commissioned</a> a 7 GW N-type tunnel oxide passivated contact G12R solar cell manufacturing facility at Naidupeta, Andhra Pradesh. The facility raises the company’s total solar cell manufacturing capacity to 10.6 GW.
The Power Grid Corporation of India <a href="https://www.mercomindia.com/powergrid-to-raise-%E2%82%B950-billion-through-10-year-bond-issue" target="_blank" rel="noopener">announced</a> plans to raise up to ₹50 billion (~$500 million) with its 84th bond issue for 2026-27. The bonds will have a base issue size of ₹10 billion (~$100 million) and a greenshoe option of ₹40 billion (~$400 million).
Germany’s Federal Network Agency, Bundesnetzagentur <a href="https://www.mercomindia.com/germany-awards-2-52-gw-in-oversubscribed-onshore-wind-auction" target="_blank" rel="noopener">awarded</a> 2.52 GW of onshore wind capacity in its latest auction. The agency received 461 bids totaling 5.25 GW against an auction volume of 2.52 GW.
Solar energy equipment supplier SMA Solar Technology <a href="https://www.mercomindia.com/sma-solar-commissions-60-gw-energy-equipment-facility-in-germany" target="_blank" rel="noopener">inaugurated</a> a new gigawatt-scale factory in Niestetal near Kassel, Germany, with an annual production capacity of more than 60 GW for utility-scale clean energy technologies.

Daily News Wrap-Up: Irradiance Data Gaps Threaten Solar Forecasts

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					</table>Power Grid Corporation of India (<a href="https://www.powergrid.in/en/" target="_blank" rel="noopener">POWERGRID</a>) has invited bids under a long-term agreement (LTA) to develop 500 MW/1,000 MWh of standalone battery energy storage systems across India.
The last date to submit bids is August 17. 2026. Bids will be opened on the same day.
Successful bidders must submit performance security equivalent to 10% of the contract value.
The LTA will remain valid for up to 12 months or until the cumulative awarded capacity reaches 1 GWh, whichever occurs earlier.
The scope of work includes the complete design, engineering, supply, erection, testing, and commissioning of 1 GWh battery storage projects.
It also entails comprehensive operation and maintenance for 12 years.
The battery storage systems are expected to have an operational life of 12 to 15 years.
Selected bidders will subsequently participate in tariff-based competitive bidding processes with POWERGRID. Once POWERGRID secures a project, it will execute a Project Specific Agreement with the selected LTA partner for that project.
The signing of the LTA does not guarantee any minimum project allocation for the successful bidders.
Bidders must submit an expression of interest demonstrating compliance with the qualifying requirements, and qualified bidders will then participate in clarification meetings to finalize the technical specifications, commercial terms, bill of quantities, and scope of work.
Shortlisted bidders will submit techno-commercial and price bids in accordance with the finalized tender conditions.
The LTA will be awarded to the bidder quoting the lowest evaluated techno-commercial bid and possessing the required capacity and capability
The battery storage projects must maintain minimum monthly system availability of 95% and guaranteed round-trip efficiency of at least 87%.
The projects must be designed for interconnection at 33 kV at the pooling substation.
Bidders can qualify through either of the following two routes:
Route 1
Bidders must have supplied, erected, tested, and commissioned grid-connected battery energy storage systems as the prime contractor, with a cumulative capacity of at least 10 MWh in the last seven years.
Alternatively, they must have supplied, erected, tested, and commissioned solar or wind power projects in India, with a cumulative capacity of at least 50 MW in the last seven years. Each project must have a minimum capacity of 10 MW.
They may also have erected, tested, and commissioned at least two air-insulated switchgear or gas-insulated switchgear circuit-breaker-equipped bays of at least 33 kV  at a single substation or switchyard in the last seven years.
Bidders may rely on a subsidiary&#8217;s technical experience to meet the project-execution requirements under this route.
Route 2
Bidders must have manufactured and supplied at least 50 MWh of batteries using the technology offered in the bid during the last seven years. At least 10 MWh of the batteries manufactured and supplied must have been in satisfactory operation as of the original bid submission deadline.
Alternatively, they may have a valid technical collaboration or manufacturing license agreement with a battery manufacturer that meets these requirements.
In such cases, bidders must submit a copy of the collaboration or licensing agreement with the bid. The agreement must be valid on the original bid submission deadline and remain valid until completion of the defect-liability period.
They must also provide a legally enforceable joint undertaking with the technology collaborator or licensor, guaranteeing the quality, timely supply, performance, and warranty obligations of the equipment.
Bidders must have maintained a positive net worth during the last three financial years and recorded a minimum average annual turnover of ₹2.83 billion (~$29.35 million) during the best three of the last five financial years.
They must also have liquid assets, access to credit facilities, or a combination of both, amounting to at least ₹1.26 billion (~$13.07 million).
Recently, POWERGRID <a href="https://www.mercomindia.com/powergrid-invites-bids-for-1-gwh-battery-energy-storage-systems" target="_blank" rel="noopener">invited</a> bids for up to 250 MW/1,000 MWh of four-hour battery energy storage systems across India.
Last month, POWERGRID <a href="https://mercomindia.com/powergrid-tenders-3-gwh-battery-storage-projects-in-west-bengal" target="_blank" rel="noopener">invited</a> bids to set up five standalone battery energy storage systems with a cumulative capacity of 750 MW/3,000 MWh across multiple locations in West Bengal.

POWERGRID Tenders 500 MW/1,000 MWh Battery Energy Storage Projects

Energy Vault, a utility-scale energy storage project developer, <a href="https://cms.mercomindia.com/energy-vault-to-raise-preferred-equity-investment/" target="_blank" rel="noopener">announced</a> that it has entered into an exclusivity agreement for a $300 million preferred equity investment. The investment aims to support the launch of Asset Vault, a fully consolidated subsidiary of Energy Vault dedicated to developing, owning, and managing energy storage assets. These assets can be standalone or combined with generation facilities, aimed at targeting the most attractive energy markets worldwide.
Zeo Energy, a residential solar and energy efficiency solution provider, <a href="https://cms.mercomindia.com/zeo-energy-completes-acquisition-heliogen/" target="_blank" rel="noopener">announced</a> the completion of the previously announced acquisition of Heliogen. Heliogen provides solutions for delivering low-carbon energy production by combining commercially proven solar technologies with thermal systems and storage expertise. The transaction consisted entirely of shares of Class A common stock of Zeo Energy. In addition to the foregoing expected benefits of the Heliogen transaction, Zeo Energy received, upon its closing, approximately $13.6 million in net cash from Heliogen through the transaction.
FlexGen Power System, a provider of battery energy storage solutions and energy management software, has <a href="https://cms.mercomindia.com/flexgen-to-acquire-powins-business-assets/" target="_blank" rel="noopener">announced</a> the acquisition of a significant portion of Powin’s business. Through the acquisition, FlexGen will own all of Powin’s IP, including hardware IP, software IP, and information technology systems, along with a significant spare parts inventory. The announcement was made following the approval from the U.S. Bankruptcy Court for the District of New Jersey, which is overseeing the Chapter 11 cases of Powin and its affiliates.
Government-owned transmission utility, Power Grid Corporation of India (POWERGRID), has <a href="https://www.mercomindia.com/powergrid-to-raise-%E2%82%B950-billion-via-private-placement-of-bonds" target="_blank" rel="noopener">received</a> approval to raise up to ₹50 billion (~$569.3 million) via private placement of bonds. The 82nd issue of POWERGRID bonds in FY 2026 comprises a base size of ₹10 billion (~$113.86 million) and a greenshoe size of ₹40 billion (~$455.4 million). The bonds will be unsecured, non-convertible, non-cumulative, redeemable, and taxable. The bonds will be redeemable at the end of the tenth year, and interest will be paid annually. The coupon/interest offered, the schedule of payment of coupon or interest, and principal will be decided after bidding at the electronic book provider.
For reports and trackers on funding and M&amp;A transactions in solar, energy storage, and smart grid sectors, click <a href="https://cms.mercomindia.com/clean-energy-reports/" target="_blank" rel="noopener">here</a>.
Read last week&#8217;s funding <a href="https://cms.mercomindia.com/funding-ma-roundup-bluewave-secures-247m-debt-financing/" target="_blank" rel="noopener">roundup</a>.

Funding and M&A Roundup: Energy Vault to Raise $300 Million

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					</table>From: <a href="https://mercomcapital.com/funding-and-ma-roundup-energy-vault-to-raise-300-million/" target="_blank" rel="noopener">Mercom Capital Group</a>
Energy Vault, a utility-scale energy storage project developer, <a href="https://mercomcapital.com/energy-vault-to-raise-preferred-equity-investment/" target="_blank" rel="noopener">announced</a> that it has entered into an exclusivity agreement for a $300 million preferred equity investment. The investment aims to support the launch of Asset Vault, a fully consolidated subsidiary of Energy Vault dedicated to developing, owning, and managing energy storage assets. These assets can be standalone or combined with generation facilities, aimed at targeting the most attractive energy markets worldwide.
Zeo Energy, a residential solar and energy efficiency solution provider, <a href="https://mercomcapital.com/zeo-energy-completes-acquisition-heliogen/" target="_blank" rel="noopener">announced</a> the completion of the previously announced acquisition of Heliogen. Heliogen provides solutions for delivering low-carbon energy production by combining commercially proven solar technologies with thermal systems and storage expertise. The transaction consisted entirely of shares of Class A common stock of Zeo Energy. In addition to the foregoing expected benefits of the Heliogen transaction, Zeo Energy received, upon its closing, approximately $13.6 million in net cash from Heliogen through the transaction.
FlexGen Power System, a provider of battery energy storage solutions and energy management software, has <a href="https://mercomcapital.com/flexgen-to-acquire-powins-business-assets/" target="_blank" rel="noopener">announced</a> the acquisition of a significant portion of Powin’s business. Through the acquisition, FlexGen will own all of Powin’s IP, including hardware IP, software IP, and information technology systems, along with a significant spare parts inventory. The announcement was made following the approval from the U.S. Bankruptcy Court for the District of New Jersey, which is overseeing the Chapter 11 cases of Powin and its affiliates.
Government-owned transmission utility, Power Grid Corporation of India (POWERGRID), has <a href="https://www.mercomindia.com/powergrid-to-raise-%E2%82%B950-billion-via-private-placement-of-bonds" target="_blank" rel="noopener">received</a> approval to raise up to ₹50 billion (~$569.3 million) via private placement of bonds. The 82nd issue of POWERGRID bonds in FY 2026 comprises a base size of ₹10 billion (~$113.86 million) and a greenshoe size of ₹40 billion (~$455.4 million). The bonds will be unsecured, non-convertible, non-cumulative, redeemable, and taxable. The bonds will be redeemable at the end of the tenth year, and interest will be paid annually. The coupon/interest offered, the schedule of payment of coupon or interest, and principal will be decided after bidding at the electronic book provider.
For reports and trackers on funding and M&amp;A transactions in solar, energy storage, and smart grid sectors, click <a href="https://mercomcapital.com/clean-energy-reports/" target="_blank" rel="noopener">here</a>.
Read last week&#8217;s funding <a href="https://www.mercomindia.com/funding-and-ma-roundup-bluewave-secures-247-million" target="_blank" rel="noopener">roundup</a>.

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					</table>The Central Electricity Regulatory Commission (<a href="https://cercind.gov.in/" target="_blank" rel="noopener">CERC</a>) has granted a transmission license to POWERGRID Khavda II-C Transmission, a wholly-owned subsidiary of Power Grid Corporation of India (<a href="https://www.powergrid.in/" target="_blank" rel="noopener">PGCIL</a>), for the evacuation of 4.5 GW of renewable energy at the Khavda pooling station, Gujarat under Phase-II, Part C on a build, own, and operate basis.
The Commission said the evacuation of 4.5 GW of renewable energy under Phase II, including Parts A to D, has to be taken up in a similar timeframe.
It directed the Central Electricity Authority (<a href="https://cea.nic.in/?lang=en" target="_blank" rel="noopener">CEA</a>) to monitor the execution of the project and bring to its notice any lapse on the part of the licensee to meet the schedule.
Background
Based on the competitive bidding process carried out by REC Power Development and Consultancy (<a href="https://www.recpdcl.in/" target="_blank" rel="noopener">RECPDCL</a>), PGCIL emerged as the successful bidder with the lowest quoted annual transmission charges of ₹2.82 billion (~$34.28 million) to set up the transmission system to evacuate 4.5 GW renewable energy from Khavda Solar Park.
A public notice about the project was published in the leading newspapers, and no suggestions were received from the public in response to the notice.
The case was heard on July 21, 2023, and the petitioner informed the Commission that the scheduled commercial operation date of the project would be March 21, 2025.
The transmission program includes Parts A, B, C, and D, and as per the transmission service agreement (TSA), all four parts are interlinked and should be taken up in a similar time frame. However, from the information submitted by the Central Transmission Utility of India (<a href="https://www.ctuil.in/" target="_blank" rel="noopener">CTUIL</a>), there is a mismatch in the commissioning date of Part A, which is March 28, 2025, and the commissioning date of Parts B, C, and D is March 21, 2025, with each part being implemented by a different entity.
In case Parts B, C, and D are declared commissioned on the scheduled commercial operation date, there will be commercial liabilities in the absence of Part A, whose scheduled commercial operation date is on March 28, 2025.
Accordingly, the Commission directed CTUIL to amend the TSAs for Parts A to D to align the scheduled commercial operation date of all the interlinked packages.
Commission&#8217;s analysis
The Commission observed that the transmission company met the requirements of the Electricity Act and the Transmission Licence Regulations for granting a transmission license.
Accordingly, CERC granted the transmission license to Khavda II-C Transmission to evacuate 4.5 GW of renewable energy at the Khavda pooling station (Phase-II, Part C).
The Commission noted that the grant of a transmission license would be subject to the fulfillment of the following conditions:
<ul>
<li>The central regulator added that the transmission agreement would remain in force for 25 years from the agreement&#8217;s signing date.</li>
<li>Also, since the expiry date as per the TSA is 35 years from the scheduled commercial operation date of the project, the licensee may apply two years before the expiry of the initial license period for the grant of transmission license for another term.</li>
<li>The licensee should not enter into any contract for or otherwise engage in the trading of electricity during the period of validity of the transmission license.</li>
<li>The licensee must pay the license fee per the guidelines in the CERC (Payment of Fees) Regulations, 2012. Failure to pay the license fee within 60 days will be considered a violation.</li>
<li>The licensee should comply with the directions of the National Load Despatch Center or the Regional Load Despatch Center.</li>
<li>The licensee should comply with the CERC (Standard of Performance of inter-State transmission licensees) Regulations, 2012.</li>
<li>The licensee must offer non-discriminatory open access to its transmission system, allowing usage by any other licensee, including distribution licensees, electric traders, generating companies, or any individual.</li>
<li>The licensee should not undertake any other business for optimum utilization of the transmission system without intimating the Commission and should comply with the provisions of the CERC (Sharing of Revenue Derived from Utilization of Transmission Assets for Other Business) Regulations, 2020.</li>
<li>The licensee should remain bound by the provisions of the CERC (Sharing of Interstate Transmission Charges and Losses) Regulations, 2020.</li>
<li>The licensee should ensure the execution of the project within the timeline specified in the provisions of the TSA and as per the technical standards and the grid standards of CEA.</li>
<li>The licensee should coordinate with the licensees executing the upstream or downstream transmission projects, the CEA, and CTUIL to ensure the smooth execution of the project.</li>
<li>The licensee should submit all information as may be required under the Transmission Licence Regulations, Standard of Performance Regulations, TSA, or any other regulation of the Commission.</li>
</ul>
In June this year, CERC <a href="https://www.mercomindia.com/cerc-license-evacuate-1-gw-renewable-tamil-nadu" target="_blank" rel="noopener">granted</a> a transmission license to Karur Transmission to evacuate 1,000 MW of renewable power from the Karur/Tiruppur wind energy zone in Tamil Nadu under Phase-I.
Earlier, CERC had <a href="https://www.mercomindia.com/cerc-transmission-license-evacuate-renewable-gujarat" target="_blank" rel="noopener">granted</a> a transmission license to Khavda-Bhuj Transmission to establish the 3 GW of renewable energy injection network at the Khavda pooling station under Phase-I.
Subscribe to Mercom&#8217;s real-time <a href="https://mercomindia.com/product/mercoms-renewable-energy-regulatory-updates/" target="_blank" rel="noopener">Regulatory Updates</a> to ensure you don&#8217;t miss any critical updates from the renewable industry.

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