Does the system use a lot of energy?

No, the system works with a low voltage and only uses a bit of energy when it is creating a vacuum. When the vacuum pressure is sufficient the system doesn’t use energy, except for the LED and the power adapter itself. At some points the pump will use some power to maintain the vacuum. When used correctly, the Vacuvita Home Base will actually save energy. The production of food requires quite a lot of energy and saving food will reduce your energy footprint.