Magitech devices can be powered in one of three ways. They can use a socketed hearthstone which acts as a conduit for the energy of a manse. Secondly they can be on an Essence grid attached to a manse in a similar way to a character recovering Essence by being present at the manse. Thirdly they can use Essence capacitors (different to the device described in Lords of Creation.) These magitech artefacts can be recharged by a device attached to an Essence grid or at the manse itself in a dedicated socket. Unlike 'magical' artefacts magitech is powered by pure Essence so it can be designed to do almost anything. However devices depend on being powered whereas other artefacts have intrinsic properties.