美国采购需求：纯正弦波逆变器充电器，低频逆变器，太阳能逆变器，储能逆变器，离网储能逆变器，商用逆变器

I'm looking to get a better understanding of which battery capacity would be the most suitable for my home energy needs. I'm considering options in the range of 10kWh, 15kWh, and 20kWh, but I'm not sure which one would fit best. Could you provide some insights into the benefits of each size? For instance, how do they perform in terms of powering my home during peak usage times and their overall efficiency? Additionally, I'd appreciate it if you could send me the pricing details for each option. It would be helpful to know if there are any different features or specifications associated with each capacity, as well as any potential savings or incentives that might come with them. Looking forward to your detailed response so I can make an informed decision!