A Regional Leader in the Energy Sector

Empresa de Energía de Bogotá - EEB A Regional Leader in the Energy Sector

EEB Overview Wide energy Portfolio: Network and Services Shareholders: Bogotá D.C. 76.28%, Ecopetrol 6.87%, Corficolombiana 3.56%, AFPs 10.19%, Others 3.09%. Focus on natural monopolies Growth through controlled subsidiaries Sound regulatory framework Ample access to financial markets 2

Leaders in every market Electricity distribution Market share (%) (Kwh) 26.6% # 1 Colombia Gas distribution Market share (%) (No. clients) 59.0% # 1 Colombia Electricity transmission Market share (%) (Km of lines) 10.10% # 2 Colombia Gas transportation Market share (%) 84.7% (Average volume transported) # 1 Colombia Electricity generation # 3 Colombia Installed Capacity (%) Generation(%) 19.1% 21.2% Electricity transmission Market share (%) (Km of 220-138 kv lines ) Electricity transmission Project ongoing (850 Km L/T and 24 S/E) 57.6% # 1 Peru # 1 Guatemala Gas distribution Market share (%) (No. clients) 100.0% # 1 Perú 3

Focus on natural monopolies and attractive energy markets

Strong Presence in Relevant Countries Natural Gas Northern Producers: Chevron Ecopetrol 1.89 tcf References Natural Gas Reserves City Field Lower and Middle Magdalena Valley 1.97 tcf Medellin Bucaramanga Cali Bogota Eastern Producers: 3.15 tcf Ecopetrol Equion Neiva Upper Magdalena Valley Peru Natural Gas Colombia Natural Gas 14,626 BCF Proveed Reserves Residential Industrial Natural gas pipeline Main grid expansion Source: ANH, MEM, UPME (medium scenario) 5

Strong Presence in Relevant Countries Electricity Source: ANH, MEM, XM, UPME (medium scenario) 6

Stable and Growing Income* GAS NATURAL CÁLIDDA TOTAL Natural Gas Distribution COP mm (USD mm) Electricity Distribution COP mm (USD mm) CODENSA EEC EMSA TOTAL 1,159,771 (605.9) 1,693,167 (871.6) 1,902,952 (1,076.2) 2,136,496 (1,108.8) 2,530,768 (1,144.7) 722,768 (297.9) 3,311,701 (1,730.3) 3,513,739 (1,808.7) 3,699,245 (2,092.1) 3,799,898 (1,972.1) 4,092,963 (1,710.7) 1,407,702 (546.5) 769,161 (401.9) 2010 2011 2012 2013 2014 1Q 15 853,053 (439.1) Natural Gas Transportation COP mm (USD mm) TGI PROMIGAS TOTAL 948,514 (536.4) 1,113,894 (578.1) 1,365,600 (570.8) 409,444 (158.9) 2010 2011 2012 2013 2014 1Q 15 Electricity Transmission COP mm (USD mm) REP CTM EEB Transmisión TOTAL 310,176 (162.1) 352,579 (181.5) 366,552 (207.3) 556,743 (288.9) 705,122 (294.7) 441,444 (171.4) 2010 2011 2012 2013 2014 1Q 15 2010 2011 2012 2013 2014 1Q 15 Predictability and stability in regulated revenues. 81% of revenues comes from regulated business. * Total of Operating Revenues per company aggregated figures for comparable purposes. 7

Growth through controlled subsidiaries and Brownfield opportunities

Consolidated Financial Results Evolution EBITDA Normalized Dividends: (1) Figures for the years 2006-2014 are presented under ColGaap standards. For 1Q 2015 LTM are presented under IFRS. LTM IFRS figures are estimated and preliminary, subject to changes, independent auditor s revision. Final Comparable figures will be available as of December 31th 2015. (2) 2010 excludes dividends declared based on an early close of Gas Natural s, Emgesa s and Codensa s financial statements. These figures are included in 2011, when such dividends would normally have been declared.(2.1) Anticipated dividends declared by Codensa on first half 2011, were included in 2012. (3) 2014 excludes dividends declared based on an early close of Gas Natural s, Emgesa s and Codensa s financial statements. These figures are included in 2015, when such dividends would normally have been declared. 9

Ambitious projects under execution

Financial Plan 2013-2019 Investments & Funding Sources 2013-2019 Funding USD Investments mlls % Cash Generation 2013-2014 507 15% Incremental Debt 2013-2014 1,092 32% Subtotal 2013-2014 1,599 47% Cash Generation 2015-2019 523 15% Incremental Debt 2015-2019 1,297 38% Subtotal 2015-2019 1,820 53% TOTAL 2013-2019 3,420 100% Composition of Investments* USD mlls % Brownfield 877.8 48.2 Greenfield 942.6 51.8 *Mainly concentrated on electricity transmission bussinesses (COL/Overseas) EEB CAPEX Profile-Controlled Companies 1,213.4 USD MM 880 792 200 Electricity Colombia Electricity Overseas Natural Gas Colombia Natural Gas Overseas Services M&A Electricity M&A Natural Gas 16 118 385.7 90 344 316 274 202 148 91 143 85 75 35 36 94 84 74 220 229 231 199 73 64 80 21 2013 2014 2015e 2016e 2017e 2018e 2019e (1) Covenant associated to this indicator is currently suspended since the bond EEB 2021 has investment grade, granted by three risk rating agencies monitoring the latter. Covenant established in Offering Memorandum of USD.749,000,000 EEB 6.125% Senior Notes due 2021. *It includes anticipated dividends. (2) Only for comparative purposes and due to transition to IFRS, 1Q 15 debt metrics have been estimated by adjusting COLGAAP last year figures. These figures are subject to change. (3) Increase in mainly explained by increase of foreign exchange USD/COP movements. 11

Consolidating the Strategy Subsidiaries Projects Update EEB Transmission as of 1Q 2015 (Expected Annual Revenue) EAR UPME Project Status On stream USD MM Armenia 78.5% 1.28 2Q 2015 Tesalia 82.6% 10.9 4Q 2015 Chivor II Norte 43.0% 5.52 3Q 2015 SVC Tunal --% 7.8 4Q 2014 Bolívar-TermoCartagena 10.9% 11.2 1Q 2017 Sogamoso-Norte 13.9% 21.2 3Q 2017 Rio Cordoba Substation Project Awarded 1.81 4Q 2016 Southwest Reinforcement Project Awarded 24.37 3Q 2018 Río Cordoba Transformadores Project Awarded 0.6 4Q 2016 La Loma Project Awarded 1.29 4Q 2016 Ecopetrol San Fernando Project Awarded N.A 2Q 2017 TOTAL 85.96 TRECSA Guatemala s interconnection System 81% *It includes USD 170 million Brazil acquisition. This is an on-going process and disbursement will be completed during 2H 2015. 12

Consolidating the Strategy Associates Projects Update EMGESA Quimbo Project (400 MW) Total investment: USD 1,231 mm Execution 1Q-15: 89 % Full operation: 2H 15 CODENSA On-going projects: Nueva Esperanza, Norte, Bacatá Substations New and existing demand Quality service and continuity Control operational risk 13

Access to Financial Markets

Access to Financial Markets EEB Baa3 BBB- BBB/AAA(col) Positive Stable Stable TGI Baa3 BBB- BBB Stable Stable Stable Cálidda Baa3 BBB- BBB- Stable Stable Stable * An additional USD 8 million will be disbursed during 2015 * Indebtedness in USD increased as a result of TGI s shares acquisition (31.92%) through IELAH s SPV. * Syndicated loan acquired by Contugas (USD 342 MM) and additional indebtedness incurred by SPV in order to reacquire 31.92% of TGI IELAH (USD 569 MM) 15

EEB Share Performance EEB Share Performance 1Q 2015 Price Valuation 1Q15 16.6% +38.4% Ticker EEB:CB As of March 31 th, 2015 EEB market capitalization was USD 6.5 Billion Trading volume tripled after the Equity Offering Nov 2011. The stock is part of COLCAP,COLEQTY and COLIR. Average Target Price 1Q15 : USD 0.72 COP 1,874 (Potential upside return: 13.5%) 16

Creating Value to shareholders (1) The values of years prior to 2011 dividend were adjusted split 100: 1, which applies the 20.06.11 shares. Outstanding shares of November 11: 9,181,177,017 (2) here was an anticipated close of the Financial Statements, reason why during 1Q 11 EEB decreed no dividends, 1Q 12 normalizes this effect. 17

Financial Highlights

Consolidated Financial Results* (1) (2) Figures for the years 2006-2014 are presented under ColGaap standards. For 1Q 2015 LTM are presented under IFRS. LTM IFRS figures are estimated and preliminary, subject to changes, independent auditor s revision. 1) 2014 excludes dividends declared based on an early close of Gas Natural s, Emgesa s and Codensa s financial statements. These figures are included in 2015, when such dividends would normally have been declared. 2) 1Q 15 Normalized by including the dividends declared. 19

Investor Relations For more information about Grupo Energía de Bogotá contact our Investor Relations team: Felipe Castilla Canales Chief Financial Officer - GEB Nicolás Mancini Suárez Financing and Investor Relations Manager GEB +57 (1) 3268000 - Ext 1536 nmancini@eeb.com.co Rafael Andrés Salamanca Investor Relations Advisor GEB +57 (1) 3268000 Ext 1675 rsalamanca@eeb.com.co Fabián Sánchez Aldana Investor Relations Advisor GEB +57 (1) 3268000 Ext 1827 fsanchez@eeb.com.co http://www.eeb.com.co http://www.grupoenergiadebogota.com/en/investors 20

Disclaimer The information provided herein is for informational and illustrative purposes only and is not, and does not seek to be, a source of legal or financial advice on any subject. This information does not constitute an offer of any sort and is subject to change without notice. EEB expressly disclaims any responsibility for actions taken or not taken based on this information. EEB does not accept any responsibility for losses that might result from the execution of the proposals or recommendations presented. EEB is not responsible for any content that may originate with third parties. EEB may have provided, or might provide in the future, information that is inconsistent with the information herein presented. We converted some amounts from Colombian pesos into U.S. dollars solely for the convenience of the reader at the TRM published by the SFC as of each period. These convenience translations are not in accordance with U.S. GAAP and have not been audited. These translations should not be construed as a representation that the Colombian peso amounts were, have been or could be converted into U.S. dollars at those or any other rates.