Seamless transition between grid connected and islanded modes

A power balancing assembly, comprising:

• at least one sensor operable to detect a first electrical parameter of a first portion of a power grid and a second electrical parameter of a second portion of the power grid;
• an energy storage device coupled to the second portion of the power grid;
• and
• a controller that:
• receives information from the at least one sensor,
• determines that the energy storage device should be disconnected from the first portion of the power grid and that at least one load should be selectively disconnected from the second portion of the power grid or selectively connected to the second portion of the power grid based upon determining an electrical variation in the first electrical parameter, and
• causes the energy storage device to operate at a power level after being disconnected from the first portion of the power grid, the power level being based on the second electrical parameter prior to the energy storage device being disconnected from the first portion of the power grid.

A method of power balancing a power grid, comprising:

• determining that an electrical variation of a portion of a power grid meets a preselected criterion;
• disconnecting an energy storage device from the portion of the power grid when the electrical variation meets the preselected criterion;
• and
• causing the energy storage device to operate at a power level after being disconnected from the portion of the power grid, the power level relating to an instantaneous power at the portion of the power grid prior to the electrical variation.