Energy Vault SPAC Presentation Deck

Operational Benchmarking Energy Storage Technology 1 Energy Transition Technology Disruptive Technology Infrastructure 2023 EBITDA Margin ENERGY VAULT 35% 30% 25% 20% 15% 10% 5% 0% 0% solaredge ENPHASE •T ARRAY TECHNOLOGIES 25% 2023E-2024E Revenue Growth | 2023E EBITDA Margin stem shoals a technologies group eos -chargepoin+¹ 50% fuelcellenergy 2023 2024 Revenue Growth Source: Energy Vault projected figures per Energy Vault, Bloomberg, Capital IQ, and company disclosures; market data as of September 2, 2021 ChargePoint's 2023E EBITDA Margin is (8) % and shown as 0% for illustrative purposes. ² Heliogen's 2023E EBITDA Margin is (47) % and shown as 0% for illustrative purposes. 2 Novus Capital Corporation II 75% ENERGY VAULT, INC. ALL RIGHTS RESERVED EVgo 100% High Revenue Growth and High EBITDA Margin in 2023E ENERGY VAULT Enabling a Renewable World ESS" INC 2 Heliogen ² 190% 45 Enabling a Renewable World

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