DEE DEVELOPMENT ENGINEERS LIMITED

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Date: 21[st] August, 2025

Listing Compliance Department

BSE Limited Phiroze Jeejeebhoy Tower, Dalal Street, Mumbai – 400001 ScripCode:544198	The National Stock Exchange of India Ltd. Exchange Plaza, Plot No. C/1, G Block, Bandra Kurla Complex, Bandra (E), Mumbai – 400051 Symbol:DEEDEV

Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”)

Intimation of Final Order by Punjab State Electricity Regulatory Commission (PSERC) for Tariff Re-determination of 8 MW Biomass Power Project

Pursuant to Regulation 30 of SEBI Listing Regulations, we would like to inform that the Punjab State Electricity Regulatory Commission (PSERC), vide its Order dated August 20, 2025, in Review Petition No. 07 of 2025, has approved the re-determined tariff for the Company’s 8 MW biomass-based power plant located in District Fazilka, Punjab.

The petition was filed for review of the Order dated May 15, 2025 of Hon’ble PSERC determining the tariff payable to the Company as the initial 13-year tariff period under Power Purchase Agreement (PPA) dated March 4, 2011, executed with Punjab State Power Corporation Limited (PSPCL) was expired. The Commission has now determined the tariff for the remaining useful life of the project (i.e., from January 1, 2024, to February 4, 2029).

Disclosure under Regulation 30 of SEBI (LODR), 2015

Particulars	Information
Name of the Authority	Punjab State Electricity Regulatory Commission(PSERC).
Nature of Order / Direction issued	Final Order for Tariff determination for FY 2023-24, FY 2024-25 and FY 2025-26 till 04/02/2029 relating to supply of electricity applicable to the Company’s Power Division.
Date of Order	20/08/2025
Date of Receipt of Order bythe Company	21/08/2025
Details of the impact on the Company	The Company estimates an annual revenue reduction of approximately₹8.20 Crores under the revised rate. Further,PSPCL may raise aretrospective recovery demand based on the differential rates, amounting to₹13.02 Crores.

Regd. Office: Unit 1, Prithla-Tatarpur Road, Village Tatarpur, Dist. Palwal, Haryana- 121102, India Works: Unit 1, 2 & 3, Village Tatarpur, Dist. Palwal, Haryana- 121102, India T: +91 1275 248200, F: +91 1275 248314, E: [email protected], W: www.deepiping.com CIN: L74140HR1988PLC030225 GST Registration No . 06AACCD0207H1ZA

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Whether the order is appealable or The Company may file an appeal before the proposed action Appellate Authority for challenging the review petition order on tariff revision and retrospective recovery demands raised by the Punjab State Power Corporation Limited (PSPCL). Key Highlights of the Order Applicable Tariff shall be as per below Table

The Company may file an appeal before the Appellate Authority for challenging the review petition order on tariff revision and retrospective recovery demands raised by the Punjab State Power Corporation Limited (PSPCL).

Appliable tariff as per the Order

Component	Previous Tariff (Upto December 2023) Per KWH	New Tariff (2023–24) Per KWH	New Tariff (2024–25) Per KWH	New Tariff (2025–26) Per KWH
Fixed Cost	₹1.74	₹1.74	₹1.74	₹1.74
Variable Cost	₹5.89	₹3.897	₹4.092	₹4.297
Applicable Tariff Rate	₹7.63	₹5.637	₹5.832	₹6.037
Less: Acc. Depreciation	₹0.16	₹0.16	₹0.16	₹0.16
Net Tariff	₹7.47 (as on 31.12.2023)	₹5.477	₹5.672	₹5.877

Note: This Order has also provided that the variable cost will be escalated by 5% annually till February 4, 2029.

This is for your information and record please.

Yours faithfully,

For DEE Development Engineers Limited

RANJAN KUMAR Digitally signed by RANJAN KUMAR SARANGI SARANGI Date: 2025.08.21 22:25:51 +05'30'

__________ Ranjan Kumar Sarangi Company Secretary and Compliance Officer Membership No.: F8604 Address: Unit 1, Prithla - Tatarpur Road, Village Tatarpur Dist. Palwal, Faridabad, Haryana – 121 102

AI assistant

DEE DEVELOPMENT ENGINEERS LIMITED Regulatory Filings 2025

62378_rns_2025-08-21_e99066ee-8d74-4fa3-91c5-bc1309a77be4.pdf

Listing Compliance Department

Sub: Disclosure under Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”)

Intimation of Final Order by Punjab State Electricity Regulatory Commission (PSERC) for Tariff Re-determination of 8 MW Biomass Power Project

Disclosure under Regulation 30 of SEBI (LODR), 2015