cost 45.8 52.3 47.2 (9.8%) 3.1% 130.4 149.3 14.5% Cost of maintenance service to outside 29.8 - - - N.A. (

-Translation- No. ECF2 044/2561 3 December 2018 Subject: Notification of the resolutions of the Board of Directors’ Meeting approving the investment in purchasing the ordinary shares of S-TREK (Thailand) Co., Ltd., capital increase, and the issuance and allocation of the newly issued ordinary shares to the specific person under the private placement basis, and the schedule for Extraordinary General Meeting No. 1/2019 To President The Stock Exchange of Thailand Enclosure 1. Information Memorandum...

No. ECF2 044/2561 3 December 2018 Subject: Notification of the resolutions of the Board of Directors’ Meeting approving the investment in purchasing the ordinary shares of S-TREK (Thailand) Co., Ltd., capital increase, and the issuance and allocation of the newly issued ordinary shares to the specific person under the private placement basis, and the schedule for Extraordinary General Meeting No. 1/2019 (Additional) To President The Stock Exchange of Thailand Enclosure 1. Information Memorandum...

-Translation- No. ECF2 005/2019 17 January 2019 Subject: Cancellation of the resolutions of the Board of Directors’ Meeting No. 13/2018 in relation to the investment in the ordinary shares of S-TREK (Thailand) Co., Ltd., the investment in the ordinary shares of S-TREK (Thailand) Co., Ltd., capital increase, and the issuance and allocation of the newly issued ordinary shares to the specific person under the private placement basis, and the schedule for 2019 Annual General Meeting of Shareholders...

kinds of visitors, including anyone visiting and relaxing with friends or families, students visiting for study tour about animal and nature life, employees of any corporate, shops, and organizations

Pty Ltd. (Boco Rock) 2. Other businesses 2.1 Local Other Businesses EGCO Engineering and Service Co., Ltd. (ESCO) O&M 2.2 Overseas Other Businesses Pearl Energy Philippines Operating Inc. (PEPOI) Quezon

Commission EPC Engineering, Procurement and Construction EVN Electricity of Vietnam FX Foreign exchange IPO Initial public offering IU Industrial user JV Joint venture KWh Kilowatt-hour MWh Megawatt-hour mmBtu

Baht 460 million in 2018, primarily attributable to gain from business combination (BGYSP) amount of Baht 276 million which should be amortised by Baht 12 million per annum along the PPA life. • Other

EBITDA Earnings before Interest, Taxes, Depreciation and Amortization EDL Electricite Du Laos EGAT Electricity Generating Authority of Thailand ERC Energy Regulatory Commission EPC Engineering, Procurement

Generating Authority of Thailand ERC Energy Regulatory Commission EPC Engineering, Procurement and Construction EVN Electricity of Vietnam Ft Fuel adjustment FX Foreign exchange IPO Initial public offering IU