Most homes could benefit from an emergency home power supply. To determine your need simply ask yourself what would happen if the power were to go out? The reason can be a storm that brings down power lines via wind or heavy snow accumulation, thus interrupting power. Another reason in the past, and could repeat, was overloading a power grid. This would cause temporary power outages as some customers would be left without power, usually as a roving outage, so the remainder of the grid could be supplied. Now, in California, we are seeing a power company cut power to reduce the potential of wildfires, thereby causing prolonged outages.
Regardless of the reason the power goes out, there are problems to deal with. Thinking about what potential problems, or inconveniences, you might experience can help you determine which remedy is best for you.