Data Collection Survey on Urgent Upgrade of Electricity Supply in the Republic of the Union of Myanmar Final Report
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The Republic of the Union of Myanmar DATA COLLECTION SURVEY ON URGENT UPGRADE OF ELECTRICITY SUPPLY IN THE REPUBLIC OF THE UNION OF MYANMAR FINAL REPORT FINAL FINAL REPORT October 2017 Japan International Cooperation Agency Nippon Koei Co., Ltd. 1R JR(先) 17-068 Data Collection Survey on Urgent Upgrade of Electricity Supply in the Republic of Union of Myanmar Final Report Myanaung Power Station Source: Data Collection Survey on Urban Development Planning for Regional Cities Figure 1 Location Map of Myanaung Power Station Nippon Koei Co., Ltd. i October 2017 Data Collection Survey on Urgent Upgrade of Electricity Supply in the Republic of Union of Myanmar Final Report ① ② ③ ④ ⑥ ⑤ Legend : Photo Direction ① : Number of photo Source: Myanaung Power Station Completion Report Figure2 Layout of Myanaung Power Station Nippon Koei Co., Ltd. ii October 2017 Data Collection Survey on Urgent Upgrade of Electricity Supply in the Republic of Union of Myanmar Final Report Photo-1 Entrance of Myanaung power station Photo-2 Switchyard overview Photo-3 Switchgear Photo-4 Gas Yard Photo-5 Powerhouse from south side Photo-6 Powerhouse from north side Nippon Koei Co., Ltd. iii October 2017 Data Collection Survey on Urgent Upgrade of Electricity Supply in the Republic of Union of Myanmar Final Report ⑦ ⑪ ⑫ ⑩ ⑧ Legend : Photo Direction ⑨ ① : Number of photo Source: Myanaung Power Station Completion Report Figure 3 Layout of Myanaung Powerhouse Nippon Koei Co., Ltd. iv October 2017 Data Collection Survey on Urgent Upgrade of Electricity Supply in the Republic of Union of Myanmar Final Report Photo-7 from Service Building side Photo-8 From entrance side Photo-9 Entrance onwest side Photo-10 Existing gas turbine (Hitachi, (W 5 m x H 5 m, 1 m above GL) dismantling) Photo-11 Bay after removal of gas turbine Photo-12 Existing gas turbine (Hitachi) (John Brown, in operation) Nippon Koei Co., Ltd. v October 2017 Data Collection Survey on Urgent Upgrade of Electricity Supply in the Republic of the Union of Myanmar Summary Urgent Upgrade of Electricity Supply in The Republic of the Union of Myanmar - Summary - 1. Urgent Upgrade of Electricity Supply 1.1 Outlines of Urgent Electricity Supply – Myanaung Gas Engine Generators (GEG) The Electric Power Generation Enterprise (EPGE) and the JICA Survey Team discussed the “Urgent Upgrade of Electricity Supply in the Republic of the Union of Myanmar” and confirmed its contents as follows: (1) Executing agency : Electric Power Generation Enterprise (EPGE) (2) Financing body : EPGE (3) Installation site : Myanaung Power Station, Ayeyarwady Region (4) Schedule : Assumed to start design works within November 2017 and the commercial operation in September 2019 (5) Goods : Gas Engine Generators (GEGs) (6) Delivery time : 11 months from the date of receipt by the Contractor of Notice to Proceed (NTP) after concluding the Contract till the delivery of the GEGs to the Myanaung Power Station. 16 months from the date of receipt of NTP to the commercial operation date. (7) Performance required: (a) Fueling the Yadana gas which has the minimum heat value of GCV 710 Btu/scf or NCV 640 Btu/scf and daily supply volume of 7 mmscfd at the price of USD 7.50/mmBtu; GEGs will be selected through tendering and the successful tenderer will be the one that can generate as much electricity as possible at the lowest kWh cost. The potential output, using Yadana gas and the latest models of GEGs available in the market, would be about 25 MW. The gross capacity of GEGs will be the product of unit capacity and unit numbers of the model offered by the successful tenderer. Estimating the capacity based on the unit output of GEG models available in the market, it would be in the order of 23- 24 MW1. 1 When imported liquefied natural gas (LNG) will be 100% used in the future in between 2021 and 2026, the calorific value would increase by more than 30%, the potential power would be about 35 MW. In this case, it would be possible to install another unit. ISO 3046 stipulates the tolerance of heat rate at 5%. Based on this clause, there might be a case to present the efficiency on the higher side but within the tolerance. To avoid such inappropriate figure and compare the heat rates and efficiencies fairly, zero tolerance may desirably be included in the tender documents, and not to accept any tolerance from the offered level. Nippon Koei Co., Ltd. S-i October 2017 Data Collection Survey on Urgent Upgrade of Electricity Supply in the Republic of the Union of Myanmar Summary (b) High speed GEG (1,500 rpm at 50 Hz) can be smaller in the size of a cylinder. It will be lower in price but less durable. The GEGs under survey are to be installed in the power station of the state power company for continuous base power generation over a long period of about 30 years. Accordingly, the GEG should be of medium speed. The engine speed will be specified to be 750 rpm2 or below. The proposed GEGs will target to replace also the IPP rental schemes of small GEGs of 1-1.5 MW for short contract period, which caused the rising of generation costs and needed subsidies to the retail electricity price. (c) Physical dimensions of the GEGs shall allow installation in the existing building of the Myanaung Power Station. (d) Nitrogen oxide (NOx) concentration in the exhaust gases shall be less than 200 mg/Nm3 under oxygen concentration of 15%. The noise level shall be less than 45 dB at any point on the border of the Myanaung compound. (e) The GEGs will be carried by 1,500 ton-class barge cruising from Yangon Port on the Ayeyarwady River. It will touch the right bank near the Myanaung Township. The trailer carrying one gas engine will land and drive up to the Myanaung Power Station. 1.2 Background of the Selection of Myanaung Power Station and GEGs The Government of Myanmar (GOM) is planning to urgently install new gas-fired generators to the existing Myanaung Power Station. This site was selected for maximum use of existing land, facilities, and staff at Myanaung Power Station. At the same time, it will avoid the acquisition of expensive land in Yangon and noise of GEG at the center of city life. Thereafter, it was clarified that even small GEGs installed by independent power producer (IPP) on rental basis in 1 to 2-month period will achieve high efficiency of over 40%. The efficiency of GTG is lower by about 10% compared with large GEG. Accordingly, GEG will consume the same amount of gas as the mobile GTG but its energy output will be greater than that of GTG by about 28% (= 46% / 36% = 1.28). GEGs will contribute to maximize the use of domestic gas resources, reinforce the generation capacity of EPGE, and improve the average heat rates of EPGE’s thermals. The JICA Survey Team supports the judgement and request of GOM to give priority to efficiency rather than the delivery time. 1.3 Scope of Japan and Myanmar Sides The potential cooperation scheme is to provide financial cooperation for the supply and transport of the GEGs up to the Myanaung Power Station. Technical Guidance Services would be provided as part of the Supply in the installation, operation and maintenance of the GEGs. 2 Time-degradation curve of heat rate or efficiency may be the basis for judging durability. It is desirable to require the curve in the tender documents and judge the durability. Nippon Koei Co., Ltd. S-ii October 2017 Data Collection Survey on Urgent Upgrade of Electricity Supply in the Republic of the Union of Myanmar Summary The scope of the Myanmar side will be modification of the existing powerhouse buildings, installation of the GEGs, and operation and maintenance of the GEGs. Some facilities and materials will also be arranged in Myanmar subject to technical proposal by the Tenderers. 1.4 Needs and Effects of the Urgent Grant In Myanmar, the power demand is rapidly increasing along with the economic growth. The maximum load of 3,075 MW was recorded in May 2017. It is forecasted that the power demand will steadily grow in the future. In accordance with the aging of existing gas thermal power stations, the reserved power will decrease. The power demand reaches an annual peak in the dry season when the hydropower output drops. This increases the risk of supply shortage in the dry season. It is well recognized in Myanmar that the Urgent Upgrade of Electricity Supply is essentially required. The existing John Brown GTG of Myanaung Power Station will stop operation upon the commissioning of new GEGs. The GEGs will utilize the same amount of gas and will increase the energy output by about 93 GWh3. The GEGs will generate about 157 GWh4 annually and deliver power to the consumers. The Urgent Grant would save an annual expense of EPGE amounting to USD 3.1-3.6 million. At the same time, it would supply stable power to about 260,000 households. 1.5 Consistency with Medium to Long-term Policy for Power Generation The Myanaung Urgent Electricity Supply will be implemented preceding the large-scale LNG-fired thermals which will be introduced in the short to medium term. Thus, the project will contribute to mitigate the pressed supply-demand balance in the Yangon area. This will replace the IPP rental GEGs for contract period of a few years. It will achieve long-term operation for about 30 years and improvement in efficiency by about 5%, i.e., reinforcing the generation capacity and lowering the average generation costs.