X0708 D/A LIVE 0002081052 EIP Frontier Fund II LP 600 THIRD AVENUE 38TH FLOOR NEW YORK NY NEW YORK 10016 212-899-9700 DELAWARE None None Limited Partnership true 2025 N/A EIP Frontier Fund II GP LLC 600 Third Avenue, 38th Floor New York NY NEW YORK 10016 Executive Officer General Partner of the Issuer N/A Energy Impact Partners LP 600 Third Avenue, 38th Floor New York NY NEW YORK 10016 Executive Officer Investment Adviser of the Issuer Hans Kobler 600 Third Avenue, 38th Floor New York NY NEW YORK 10016 Executive Officer Managing Member of the General Partner Joshua J. Feldman 600 Third Avenue, 38th Floor New York NY NEW YORK 10016 Executive Officer General Counsel & Chief Operating Officer of the General Partner Kyle Wool 600 Third Avenue, 38th Floor New York NY NEW YORK 10016 Executive Officer Chief Financial Officer of the General Partner Pooled Investment Fund Private Equity Fund false Decline to Disclose 06b 3C 3C.1 3C.7 true 0001012975-25-000597 2025-10-06 true true false 0 Haydon Hill Advisors Ltd. None None None 11 Haydon Hill House, Merry Hill Road Bushey X0 UNITED KINGDOM WD23 1DU true Indefinite 236262626 Indefinite Total Amount Sold includes the General Partner's commitment as well as sales in the feeder fund and the parallel fund. false 29 0 true 0 true Amounts to be paid to Recipient listed in Item 12 (Sales Compensation) will be determined based on a percentage of capital raised from certain investors. 0 true The Investment Adviser will receive management fees in an amount based off of the amount of securities sold. false EIP Frontier Fund II LP /s/ Kyle Wool Kyle Wool Chief Financial Officer of the General Partner 2026-07-27