#1Allego, a leading European public EV fast-charging network Advancing green electrification First Half 2023 Earnings > Presentation August 15, 2023 Allego> Allego#2Disclaimer Forward Looking Statements All statements other than statements of historical facts contained in this presentation are forward-looking statements. Allego N.V. ("Allego") intends such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in Section 21E of the Securities Exchange Act of 1934 and the Private Securities Litigation Reform Act of 1995. Forward-looking statements may generally be identified by the use of words such as "believe," "may," "will," "estimate," "continue," "anticipate," "intend," "expect," "should," "would," "plan,", "project," "forecast," "predict," "potential," "seem," "seek," "future," "outlook," "target" or other similar expressions (or the negative versions of such words or expressions) that predict or indicate future events or trends or that are not statements of historical matters. These forward-looking statements include, without limitation, Allego's expectations with respect to future performance. These forward-looking statements involve significant risks and uncertainties that could cause the actual results to differ materially, and potentially adversely, from those expressed or implied in the forward- looking statements. Most of these factors are outside Allego's control and are difficult to predict. Factors that may cause such differences include, but are not limited to: (i) changes adversely affecting Allego's business, (ii) the price and availability of electricity and other energy sources, (iii) the risks associated with vulnerability to industry downturns and regional or national downturns, (iv) fluctuations in Allego's revenue and operating results, (v) unfavorable conditions or further disruptions in the capital and credit markets, (vi) Allego's ability to generate cash, service indebtedness and incur additional indebtedness, (vii) competition from existing and new competitors, (viii) the growth of the electric vehicle market, (ix) Allego's ability to integrate any businesses it may acquire, (x) Allego's ability to recruit and retain experienced personnel, (xi) risks related to legal proceedings or claims, including liability claims, (xii) Allego's dependence on third-party contractors to provide various services, (xiii) data security breaches or other network outage; (xiv) Allego's ability to obtain additional capital on commercially reasonable terms, (xv) Allego's ability to remediate its material weaknesses in internal control over financial reporting, (xvi) the impact of COVID-19, including COVID-19 related supply chain disruptions and expense increases, (xvii) general economic or political conditions, including the Russia/Ukraine conflict or increased trade restrictions between the United States, Russia, China and other countries; and (xviii) other factors detailed under the section entitled "Risk Factors" in Allego's filings with the Securities and Exchange Commission. The foregoing list of factors is not exclusive. If any of these risks materialize or Allego's assumptions prove incorrect, actual results could differ materially from the results implied by these forward-looking statements. There may be additional risks that Allego presently does not know or that Allego currently believes are immaterial that could also cause actual results to differ from those contained in the forward- looking statements. In addition, forward-looking statements reflect Allego's expectations, plans or forecasts of future events and views as of the date of this presentation. Allego anticipates that subsequent events and developments will cause Allego's assessments to change. However, while Allego may elect to update these forward-looking statements at some point in the future, Allego specifically disclaims any obligation to do so, unless required by applicable law. These forward-looking statements should not be relied upon as representing Allego's assessments as of any date subsequent to the date of this presentation. Accordingly, undue reliance should not be placed upon the forward-looking statements. INDUSTRY AND MARKET DATA Although all information and opinions expressed in this presentation, including market data and other statistical information, were obtained from sources believed to be reliable and are included in good faith, Allego has not independently verified the information and makes no representation or warranty, express or implied, as to its accuracy or completeness. Some data is also based on the good faith estimates of Allego, which is derived from its review of internal sources as well as the independent sources described above. This presentation contains preliminary information only, is subject to change at any time and, is not, and should not be assumed to be, complete or to constitute all the information necessary to adequately make an informed decision regarding your investment with Allego. FINANCIAL INFORMATION; NON-IFRS FINANCIAL MEASURES Some of the financial information and data contained in this presentation, such as EBITDA, Operational EBITDA and free cash flow, have not been prepared in accordance with Dutch generally accepted accounting principles, United States generally accepted accounting principles or the International Financial Reporting Standards ("IFRS"). We define (i) EBITDA as earnings before interest expense, taxes, depreciation and amortization, (ii) Operational EBITDA as EBITDA further adjusted for reorganization costs, certain business optimization costs, lease buyouts and transaction costs and (iii) free cash flow as net cash flow from operating activities less capital expenditures. Allego believes that the use of these non-IFRS measures of financial results provide useful information to management and investors regarding certain financial and business trends relating to Allego's financial condition and results of operations. Allego's management uses these non-IFRS measures for trend analyses, for purposes of determining management incentive compensation and for budgeting and planning purposes. Allego believes that the use of these non-IFRS financial measures provides an additional tool for investors to use in evaluating projected operating results and trends and in comparing Allego's financial measures with other similar companies, many of which present similar non-IFRS financial measures to investors. Management does not consider these non-IFRS measures in isolation or as an alternative to financial measures determined in accordance with IFRS. The principal limitation of these non-IFRS financial measures is that they exclude significant expenses and income that are required by IFRS to be recorded in Allego's financial statements. In addition, they are subject to inherent limitations as they reflect the exercise of judgments by management about which expense and income are excluded or included in determining these non-IFRS financial measures. In order to compensate for these limitations, management presents non-IFRS financial measures in connection with IFRS results and reconciliations to the most directly comparable IFRS measure are provided in the Appendix to this presentation. TRADEMARKS AND TRADE NAMES Allego owns or has rights to various trademarks, service marks and trade names that it uses in connection with the operation of its businesses. This presentation also contains trademarks, service marks and trade names of third parties, which are the property of their respective owners. The use or display of third parties' trademarks, service marks, trade names or products in this presentation is not intended to, and does not imply, a relationship with Allego or an endorsement or sponsorship by or of Allego. Solely for convenience, the trademarks, service marks and trade names referred to in this presentation may appear with the Ⓡ, TM or SM symbols, but such references are not intended to indicate, in any way, that Allego will not assert, to the fullest extent under applicable law, its rights or the right of the applicable licensor to these trademarks, service marks and trade names. 2 Allego>#3Allego> Overview & Key Highlights Mathieu Bonnet, CEO Allego#4First Half of 2023 Highlights ■ Financial Highlights > Revenue of €68.2 million (+34.6% y-o-y). Charging revenue rose 113.1% y-o-y, benefitting from greater utilization rates, the growing number of chargers, and price increases. ▪ Service revenue decreased 35.9% y-o-y, driven by the expected phasing out of the Carrefour project and before the start-up of new projects in H2 2023. Total energy sold was 96.4 GWh, a 37.9% growth from the prior-year period. > Average utilization rate¹ jumped to 12.6%, a 51% improvement compared to 2022. > Total number of charging sessions increased 17.2% y-o-y to 5.2 million. > Operational EBITDA was €11.7 million vs. €(1.5) million. > Net loss was €(38.9) million vs. €(247.1) million. Select Key Highlights > Entered into a long-term agreement to sell compliance credits to Esso Deutschland GmbH. The agreement is signed through the end of 2028 with a total potential value of up to €185 million. > Established a partnership in Q2 2023 with OIL! Tank & Go to install ultra-fast chargers across the company's filling stations throughout Denmark. Fourteen sites are expected to be operational by Q1 2024, and a Memorandum of Understanding (MoU) has been signed for the entire Danish portfolio of 80 sites. > Entered into an agreement with Partedis, a real estate owner, to equip more than 40 premium sites in France with 90 new ultra-fast chargers. > Increase in secured backlog to 1,350 sites.² Source. Company information. Financial Information is unaudited. 1. Utilization rate, a key performance measure for the ultra-fast charging pole, is defined as the number of charging sessions per charger per day divided by a maximum number of charging sessions per day of 50 sessions. As of June 30, 2023 2. 4 Allego>#5Business Model Overview Own & Operate Build, own, and operate fast and ultra-fast charging sites One of the largest European public EV charging networks Owned Public Charging Ports Breakdown ¹,2 AC 23,273 Fast 595 Ultra-Fast 1,066 Allego's energy platform sources green energy from multiple suppliers and directly from renewable assets, enabling: Allego> Uptime and Performance Report Al Countries or Select Downtime per Socket Uptime ind Open Incidents 98.34% 14.12 Downtime per Socket, h ● Proprietary Software ERLAND 143 Source. Company information as of June 30, 2023 1. Charging ports are defined as the number of sockets on a charger that is simultaneously accessible for charging 2. Only includes public chargers 04/12/17 04:1337. 04/12/17 04:10:57 04/12/17 0415, 04/12/17 04:04 22. 04/12/17 085452. 04/12/17 03514) 04/12/17 04 33 04/12/17 04540 Mgom 29 countpeperiod Allego> chargebodesty 1 DEALLEGO0000 0 NEALLEGO00077 1 NALLEGO0003 1 DEALLEGO000006 Failed DEALLEGO000706 2 NALLEGO000099 Faulted Taulted 0 DEALLEGO000021 1 NALEGO000000 F Othermor Catal Sch Other Allego's software suite allows compatibility and an optimized user experience for all EV drivers Portefolum Allamo™ identifies premium charging sites and forecasts demand using external traffic statistics EV Cloud™ provides software solutions for EV charger owners, including payments, and achieves high uptime Flexibility in choosing sourcing for charging stations Ability to secure long-term PPAs ● ● Sales & Services Carrefour NISSAN Attractive, high-margin third-party service contracts Includes site design and technical layout, authorization and billing, and operations and maintenance AC Third-Party Public Charging Ports Breakdown¹ 3,372 Fast 360 Ultra-Fast 5 688 Long-term sustainable charging price Reduced impact from market volatility Allego>#6Allego Energy Platform Own energy platform with door-to-door capabilities: Sourcing own energy to chargers in the main European countries of operation Trading electricity on power exchanges automatically, based on forecasts of charger consumption Directly connecting renewable assets in order to supply power directly Enabling Allego to: > Determine the most sustainable and cost-efficient way to supply its chargers, i.e., green energy. > Secure long-term PPAs with renewable producers (10-year average) to lower supply costs and secure long-term green energy. > Provide sustainable and stable energy to EV drivers and enable the development of assets by providing long-term off-take to renewable developers. > Mitigate price volatility with most Allego energy supplied from long-term PPAs from 2023 onward. Secure and enhance its margin with strategic, long-term energy price on technology and deep knowledge of the energy markets. tdeo Enabling renewable forecasts to supply remaining power if needed Developing ancillary services for grid operators as reserves of capacity Resulting in new opportunities: > Signed first PPA with a major European independent renewable power producer in Germany. Objective is to reach 80% of energy supply through such contracts. > Additional PPAS signed in 2023 for a total volume of more than 160 GWh. > The rise in demand for Allego chargers is expected to increase business opportunities and help solidify the company's leading position in Europe's energy transition. And Allego>#7First Half of 2023 Highlights Strong Revenue Visibility from Secured Backlog and Pipeline Operational Secured expansion Future expansion plans Source: Company Information, Data as of June 30, 2022 # of ports Total Allego Owned Fast and Ultra-Fast Charging Ports Existing Presence ~1,000 Sites 1,661 B F Public fast charging ports in operation Utilization trend validated Secured Backlog ~1,350 Sites 12,461 10,800 First half backlog increased 22.7% y-o-y 10- 15 to 20-year leases or MOUS have been signed for premium sites Exclusivity secured Pipeline 1,000 Additional Sites 20,461 8,000 Additional premium sites identified Exclusivity in discussion 7 Allego>#8Allego> Financials Ton Louwers, CFO Allego 8#9First Half of 2023 Financial Highlights Significant Growth Buoyed by Strong Fundamentals Revenue (in €mm) € 80 € 60 € 40 € 20 € 0 ■Charging € 26.7 Source: Company information. € 24.0 H12022 Services € 17.1 € 51.1 H12023 Operational EBITDA (in €mm) € 18 (€2) € (1.5) H12022 € 11.7 H12023 1 2 3 H1 2023 revenue of €68.2 million > Revenue of €68.2 million (+34.6% y-o-y) Charging revenue rose 113.1% y-o-y. This growth was driven by a sharp increase in charging sessions, the 107% expansion (y-o-y) in the number of operational Allego ultra-fast charging ports, and solid charging session prices. H1 2023 Operational EBITDA of €11.7 million > Strong y-o-y Operational EBITDA increase, improving by more than €13 million > The increase in Operational EBITDA was a result of the expansion strategy in ultra-fast charging, increasing network leverage, and solid gross margins from charging revenue. Secured backlog increased meaningfully with a solid rollout of ultra-fast charging ports Allego>#10First Half of 2023 Financial Highlights Owned Public Fast and Ultra-Fast Charging Ports 778 515 H1 2022 479 Fast 194 H1 2022 107% Fast 595 Third-Party Public Fast and Ultra-Fast Charging Ports 1,0... Ultra-Fast (255%) H1 2023 360 688 H1 2023 Ultra-Fast Source: Company information. 1. Charging ports are defined as the number of sockets on a charger that is simultaneously accessible for charging 1 Strong roll out of ultra-fast charging ports > The total number of owned public ultra-fast charging ports¹ increased by 107% y-o-y in 2023 compared to 2022. > Third-party fast and ultra-fast charging ports increased by 255% y-o-y. > Allego executed its plan to accelerate the rollout of its own ultra-fast network and the implementation of its sales and services contracts. > A substantial increase in chargers along with continuous growth in utilization rates indicates that Allego is attracting more traffic. 10 Allego>#11First Half of 2023 Financial Highlights Operating Metrics Reflect Market Inflection Increase in Total Energy Sold (in GWh) 69.9 H12022 +~38% Average Utilization Rate Increase 8.3% H12022 +~51% 96.4 H12023 12.6% H12023 Source: Company information. 1. Utilization rate, a key performance measure for the ultra-fast charging pole, is defined as the number of charging sessions per charger per day divided by a maximum number of charging sessions per day of 50 sessions. 1 2 Strong growth in energy sold > Total energy sold during Q2 2023 was 96.4 GWh, an increase of 37.9% y-o-y, and was from 100% renewable sources. > Energy sold per charging session showed robust growth from a greater number of vehicles with larger batteries. Increased utilization rate > Utilization rates rose to 12.6% in H1 2023, increasing by 51% compared with H1 2022. > Continued to see strong penetration of electric vehicles in Europe, underpinning Allego's growth expectations. 11 Allego>#12First Half of 2023 Financial Highlights Increasing Demand and Elevated Visibility Total Number of Charging Sessions (in mm) 4.4 +~17% H12022 80% 5.2 User Track Record on Allego's Network (in % recurring users) H12022 H12023 80% H12023 Source: Company information. 1. Total number of charging sessions for both company-owned and third-party sites 2. All customer data is tracked through the ID cards/tokens used on Allego's network and required for invoicing 1 2 Charging sessions increasing with higher EV density > Allego's network handled 5.2 million¹ charging sessions in 2023 through its EV Cloud platform, an increase of 17.2% compared to the same period in 2022. > Allego's network continues to experience strong customer loyalty with an approximately 80% return rate in H1 2023². Green energy and smart charging technology > Allego continues to work with producers of renewable energy to supply green electricity to its charging network through PPAS. > 160 GWh have been signed as of H1 2023. > Development of technology for load balancing implemented in Q2 2023, which will open future ancillary services. 12 Allego>#131. Full Year Guidance¹ Total energy sold: 215 GWh - 225 GWh Revenue: €180 m - €200 m > Operational EBITDA: €30 m - €40 m Guidance as of August 15, 2023 13 Allego>#14Allego> Appendix Financial Statements Reconciliation Allego#15Appendix Reconciliation of Non-IFRS Financial Measures (in €mm) (unaudited) Loss for the period Income tax Finance costs Amortization and impairments of intangible assets Depreciation and impairments of right-of-use assets Depreciation, impairments and reversal of impairments of property, plant and equipment EBITDA Bonus payments to consultants Lease buyouts Business optimization costs Reorganization and Severance Operational EBITDA H12023 (9.3) Fair value gains / (losses) on derivatives (purchase options) 2.4 Share-based payment expenses 11.5 Transaction costs Cash generated from operations Capital expenditures Proceeds from investment grants Free cash flow (38.9) 0.5 12.4 2.4 3.8 10.5 7.1 11.7 H12022 (246.6) 0.2 (15.1) 1.7 2.9 5.9 (251.0) (3.8) 241.3 9.1 2.9 (1.5) 2022 (305.3) 0.6 (10.3) 3.7 6.7 16.7 (287.8) (3.9) 258.1 8.9 26.5 0.5 2.3 (108.3) (27.1) 0.5 (134.9) 2021 (319.4) 0.4 15.4 2.7 3.4 5.6 (292.2) (2.9) 291.8 11.8 0.6 0.1 9.2 (9.2) (15.6) 1.7 (23.1) 2020 (43.4) (0.7) 11.3 3.7 1.8 4.8 (22.5) 7.1 0.1 1.8 3.8 (9.7) (34.4) (18.4) 3.2 (49.6) 15 Allego>#16Allego> > keep driving forward