High Power Rocketry (HPR) relates to any rocket vehicle in any of the following categories:

• Where the combined propellant mass of rocket motors used is over 125 grams
• Where any single motor has a propellant mass over 62.5 grams
• Where the maximum mass of the model at launch exceeds 500 grams
• Where the rocket motor propellant is liquid, gas or a hybrid of these, or solid propellant

Examples of High Power Rocket kits are those manufactured by Public Missiles Limited (PML) and LOC Precision.