Multi-throw or multi-pole switching systems and methods for providing modular switching combinations for enabling flexible home energy management

A double-throw switching system for providing modular switching combinations for enabling flexible home energy management, the double-throw switching system comprising:

• an energy management system configured to switch between a plurality of energy sources automatically/manually to enable flexible configurations thereof, wherein the plurality of energy sources includes a utility, a solar power source, a battery, and another backup energy source;
• and
• one or more modular transfer switches as one or more modules including a double-throw switching module configured to add to the energy management system one or more energy sources from the plurality of energy sources, wherein each switching module is a double-throw switch such that by using multiple double-throw switching modules, the double-throw switching system realizes substantially the same functionalities as in a quadruple switching system,
• wherein the double-throw switching module is made of multiple poles so adding the double-throw switching module can add multiple energy resources including the utility, the solar power source, the battery and the another backup energy source, and
• wherein the one or more modular transfer switches include:
• a net-metering switch to allow energy to be sold back to the utility, and
• a charging switch to select the battery.