Where ideas are born nurtured and grown Names
Where ideas are born, nurtured and grown! Names of the Participants Md. Munsurul Alam, A. H. M. Safiul Azam, Anik Mallik, Protik Kumar Sarker and Md. Rajiul Hasan Division Engineering Performing Group Engineering Design (Energy), Engineering Design (Civil) SEEDS IDEA NAME Sustainable green site solution with solar as shed and optimized energy design
Green site solution: Background of the idea from an Eagle’s view 4 m 4. 9 m 4. Solar put as shed at new site Till Y 2018, edotco BD possess 960 Solar Sites, in Y 2019, the number will be 1160! Vision Go Green: 100% Solar sites in edotco BD; Challenge: feasibility (space & direction) Green site solution: All new sites having solar from RFAI; ensuring value: Sustainability 2. 5 k. Wp Solar panels replacing Shed of outdoor shelter (CI sheet and MS Angle) 300 Ah battery usage instead of 400 Ah with a renewable energy source of 2. 5 k. Wp Solar Green solution to every site with an additional Cap. Ex of BDT 25 k only!! Rectifier module; 3 k. W Solar Charge controller ; 3 k. W 2 rectifier modules used, instead of 3 and a solar charge controller put in the slot For 2 k. W DC load, reduce 1 pc of 3 k. W rectifier module and add 3 k. W Solar Charge Controller (Purchase as a rectifier accessory)
Green site solution: Sustainable benefits for edotco Group Green Energy for Sustainability 27% Carbon emission from one site per year Reduction by 27% 0 Ton/year Conventional site Civil structure and solar Cap. Ex reduction Carbon footprint reduction Green site Conventional site E-bill BDT 384, 257 Conventional site BDT 341, 518 Green site BDT 235, 428 Conventional site BDT Green site 186, 387 Solar Cap. Ex additional Cap. Ex BDT 25 k [CELLRAN GE] [SERIES NAME] BDT 52, 495 Total site cost comparison E-bill & Battery Cap. Ex savings/site/year BDT 92, 096 [CELLRAN GE] [SERIES NAME] Solar opportunity with an battery Cap. Ex savings 43% BDT 15, 440 Civil structure & Solar Cap. Ex reduction/site Civil Structure E-bill savings 12% and BDT 17, 520 11% Civil structure and 21% Solar Cap. Ex reduction Total site cost Additional Cap. Ex BDT 25, 423 Green site Battery Cap. Ex In addition to these, Green site solution will facilitate the following: Ø Battery life-time increase by 1. 5 years Ø Average MTTR reduction by 18% Conventional site Green site
Green site solution: Employees benefitted too! Green site solution will provide benefits to the employees of edotco also! Ø Reduce average MTTR by at least 18% than that in present by providing alternate energy source as Solar which will provide 18. 96% of the total energy requirement Ø Increase battery life-time by using solar (1. 5 years), hence the requirement of battery replacement comes after 1. 5 years than that in present Ø Reduce average usage of PG operation (not considered in financial analysis) Ø Moreover, average site delivery SLA not hampered with Green site solution Active DC load requirement Total requirement per day 2 k. W 48 k. W Solar capacity Avg. Solar generation/day 2. 5 k. Wp 9. 1 k. W Total alternate energy contribution by Solar Overall MTTR reduction by Green site solution 18% at least SLA not hampered with 18. 96 % Green site solution
Green site solution: Detailed idea with cost comparison The detailed design of Green site solution is given below: Criteria 3 legged Tower Foundation Civil works (Shed of outdoor shelter) Civil works (Others) OD cabinet base Elecrical & Grounding Power connection Load consideration Rectifier system Conventional Design Similar Consists of CI sheet (4. 4 x 4. 9 sq. m) and MS angle (181. 44 kg) Similar 2 k. W Active DC Similar Rectifier modules 3 pcs of 3 k. W module Battery Cabinet 400 Ah 42 U Solar panel & system N/A Green site solution Similar CI Sheet and MS Angle replaced by Solar panels (2. 5 k. Wp) and frames Similar 2 k. W Active DC Similar 2 pcs of 3 k. W module and a 3 k. W solar charge controller 300 Ah 42 U 8 pcs of 320 Wp solar panels (2. 5 k. Wp system); Solar charge controller not required as covered with rectifier Cost-head comparison Tower Civil [VALUE] Green site BDT 580, 202 BDT 713, 224 BDT 748, 564 BDT 793, 440 BDT 502, 338 Conventional site Energy Solar
Green site solution: Detailed design consideration for battery Battery utilization in different grid availability scenarios considering 2 k. W active DC load: Power system 400 Ah Battery Avg. discharg Grid Trend Do. D/ e cycle/day 2 hrs continuous outage thrice in 3 20% a day One 6 hrs outage and one 2 45% 2 hrs outage One 8 hrs outage 1 90% Battery Life. Cap. Ex cycle Life- Depreciat Avg. Battery Lifetime ion per discharge Do. D/ Cap. Ex cycle (yrs) year cycle/ day cycle Life- Depreciat Savings/ time ion per year (BDT) (yrs) year 5, 707. 20 6, 700 6. 12 932. 74 3 19% 4, 280. 40 6, 700 6. 12 699. 56 19, 587. 62 5, 707. 20 3, 800 5. 21 1, 096. 38 2 38% 4, 280. 40 5, 000 6. 85 624. 94 39, 601. 36 5, 707. 20 1, 000 2. 74 2, 083. 13 1 75% 4, 280. 40 2, 000 5. 48 781. 17 109, 364. 22 Worst Case: 8 hrs of continuous grid outage 300 Ah Battery with Solar (Proposed idea) Conventional site Green site solution not capable of providing backup capable of providing adequate backup Green site solution results in Battery Cap. Ex savings in every scenario
Green site solution: Financial benefits for edotco Group Summary of financial savings and analysis: BDT 44, 875. 96 CI sheet (4. 4 x 4. 9 m 2) and MS Angle (181. 44 kg) replaced with 2. 5 k. Wp solar E-bill saving BDT 22. 3 k and Battery Cap. Ex saving Duty for Rectifier accessory Reduced Rectifier Cap. Ex 12% and Solar charge controller 43% BDT 13. 17 k and Solar Cap. Ex BDT 32. 1 k Solar charge controller purchased as a Rectifier accessory to avoid huge duty 300 Ah Battery usage instead of 400 Ah & life-time Solar solution with an Civil structure Cap. Ex reduction of increased by 1. 5 years Potential Incentive gain from expected MTTR reduction by 18% additional Cap. Ex of BDT 25. 4 k only! PG Op. Ex savings potential with MTTR reduction BDT 39. 6 k of 43% IRR 163% Payback period 0. 6 yrs. ROI 490% Rectifier module reduced from 9 k. W to 6 k. W
Green site solution: Financial benefits for edotco Group (Cont’d) Financial analysis for 2. 5 k. Wp Solar installation at Green site for 2 k. W DC load Particulars Year 0 Year 1 Year 2 Year 3 Year 4 Year 5 Year 6 Year 7 Year 8 Year 9 Year 10 Cap. Ex** (25, 423. 12) E-Bill Savings/year** 22, 386. 18 22, 386. 18 Battery savings/year** Total savings from Energy/year** Op. Ex 39, 601. 36 39, 601. 36 BTRC Revenue Share 61, 987. 54 61, 987. 54 (8, 132. 86) (8, 458. 17) (8, 796. 50) (9, 148. 36) (9, 514. 29) (9, 894. 87) (10, 290. 66) (10, 702. 29) EBITDA (%) Depreciation (2, 542. 31) EBIT 59, 445. 23 51, 312. 37 50, 987. 05 50, 648. 73 50, 296. 87 49, 930. 93 49, 550. 36 49, 154. 57 48, 742. 94 Interest PBT (%) Tax (19, 738. 06)(19, 798. 90)(17, 020. 55) (16, 983. 02) (16, 950. 09) (16, 922. 68) (16, 901. 83) (16, 888. 73) (16, 884. 71) (16, 891. 30) PAT 36, 656. 40 36, 769. 39 31, 609. 60 31, 539. 89 31, 478. 73 31, 427. 83 31, 389. 12 31, 364. 79 31, 357. 33 31, 369. 55 PAT (%) After tax cashflow (25, 423. 12) 42, 249. 48 42, 188. 63 36, 834. 13 36, 546. 35 36, 240. 95 35, 916. 50 35, 571. 41 35, 203. 94 34, 812. 16 34, 393. 95 Cumulative cashflow (25, 423. 12) 16, 826. 36 59, 015. 00 95, 849. 13 132, 395. 48 168, 636. 43 204, 552. 93 240, 124. 34 275, 328. 28 310, 140. 45 344, 534. 40 NPV 172, 325. 76 IRR Payback period (years) 61, 987. 54 53, 854. 68 53, 529. 37 53, 191. 04 52, 839. 18 52, 473. 24 52, 092. 67 51, 696. 88 51, 285. 25 100% 3, 050. 77 100% 87% 2, 876. 93 2, 682. 22 86% 2, 464. 15 86% 2, 219. 91 85% 83% (2, 542. 31) 1, 946. 36 85% 1, 639. 98 84% 1, 296. 84 912. 52 482. 09 56, 394. 45 56, 568. 30 48, 630. 15 48, 522. 91 48, 428. 82 48, 350. 51 48, 290. 95 48, 253. 52 48, 242. 04 48, 260. 85 91% 59% 163% 0. 60 ROI 772% ROI (discounted) 490% 91% 59% 78% 51% 78% 51% **Note: Detailed Cap. Ex calculation and savings calculation are shown in Annex-1 and Annex-2 respectively. 78% 51%
Green site solution: Environmental benefits with CO 2 emission reduction CO 2 reduction from Electricity (1 site) Electricity savings/day Electricity savings/year CO 2 Emission/site/year CO 2 Emission reduction/year CO 2 emission reduction k. W-hr/day k. W-hr/year Ton/year % 5. 7 2, 081 16. 47 1. 96 12% Overall Carbon footprint reduction from Conventional Energy system 27% CO 2 reduction from Battery usage (1 site) 400 Ah Li-ion capacity CO 2 emission from raw materials of 400 Ah 300 Ah Li-ion capacity CO 2 emission from raw materials of 300 Ah Usual Life-time of 400 Ah Li-ion Usual Life-time of 300 Ah Li-ion with solar CO 2 emission from 400 Ah CO 2 emission from 300 Ah (with solar) CO 2 emission reduction k. Wh Ton years Ton/year % 20, 000. 00 78. 00 15, 000. 00 58. 50 5. 21 6. 85 14. 98 8. 54 6. 44 43% Total CO 2 reduction (1 site) CO 2 emission from conventional energy system CO 2 reduction from Proposed solution Ton/year CO 2 reduction from Proposed solution % 31. 45 8. 40 27% CO 2 reduction by one Green site in a year is equivalent to planting 293 trees Electricity saved from one Green site per year will provide utility to at least 2 houses
Green site solution: Competitor analysis (Local and Global) In Bangladesh, Grameenphone, the leading MNO is trying to put solar at every site by building separate structure, with high Cap. Ex involved in. Other MNO like Banglalink and Tele. Talk are showing no significant interest in renewable energy and cost reduction through it. Other 3 Tower. Cos awarded with license, are busy with business development rather than using renewable energy. Global Tower. Co leaders (ATC, China Tower. Co, Indus Tower etc. ) put high emphasis in green energy, but not with reduced Cap. Ex. Green site solution gives edotco Group a head- start both in Bangladesh and globally in Green energy usage with reduced Cap. Ex!
Green site solution: Great ideas are not born everyday! The unique value propositions Green site solution are given below in short: Ø Solar is accepted by edotco Group widely. Green site solution will make solar deployment possible at every new sites, which would be a great tool for “Go green” initiative. Ø Green site solution makes environmental benefits (reduction of CO 2 emission) so huge due to solar usage that aligns itself with the value “Sustainability” for a 21 st century business organization. Ø Design and use of less capacity battery will save Cap. Ex with reduced Operational challenges. Ø Last, but not the least, the financial analysis exhibits great result in terms of savings and cost reduction along with much better NPV, IRR and ROI. In a nutshell, Green site solution covers almost all the aspects of a Tower. Co operation with both Cap. Ex reduction and Op. Ex savings by a lucrative percentage being environmentally responsible. This makes the idea a strong candidate for shortlisting. Therefore, Green site solution deserves the attention of the honourable jury board and approval for further implementation eventually.
THANK YOU A. H. M. Safiul Azam Anik Mallik Md. Munsurul Alam Protik Kumar Sarker Md. Rajiul Hasan
Annexure
Annex-1: Cap. Ex calculation for Green site solution Cost comparison between conventional site and Green site solution for 2 k. W DC load Conventional Site Tower, Site construction & Energy Cost 3 legged Tower Foundation Green Site Solution Total Price (BDT) Details 502, 337. 55 Construction of OD cabinet base/ Equipment building Other civil & electrical works including power connection 3 x 3 k. W Rectifier system with modules Li-ion battery 400 Ah 384, 256. 80 Cap. Ex reduction/Additional Cap. Ex (BDT) − Total Price (BDT) 502, 337. 55 21. 56 sq. m CI sheet and 341, 517. 79 181. 5 kg MS Angle avoided 42, 739. 01 409, 183. 24 407, 046. 29 2, 136. 95 79, 027. 20 65, 856. 00 13, 171. 20 479, 404. 80 300 Ah 359, 553. 60 119, 851. 20 154, 792. 00 − Total Cost per site without Solar 2, 009, 001. 60 1, 831, 103. 24 177, 898. 36 Cabinet and other energy costs Solar procurement and installation cost 2 x 3 k. W modules Total Price (BDT) Details PV Module hybrid Solar system, 320 W Procured as a part of rectifier accessory Total Price (BDT) Cap. Ex reduction/Additional Cap. Ex (BDT) 84, 262. 48 (84, 262. 48) 16, 934. 40 (16, 934. 40) Solar panel (2. 5 k. Wp) Solar charge controller Solar SPD and other accessories 102, 124. 60 (102, 124. 60) Total Cost per Solar 203, 321. 48 (203, 321. 48) Additional Cap. Ex for Solar (25, 423. 12)
Annex-2: Savings calculation from Green site solution Summary savings from 2. 5 k. Wp Solar installation at proposed site for 2 k. W DC load Load 2. 00 k. W Electricity Consumption Savings/day 5. 70 k. Wh E-Bill Savings/year/site 22, 386. 18 BDT Battery Cap. Ex savings/year/site 39, 601. 36 BDT Total savings from Energy/year/site 61, 987. 54 BDT
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