DC coupling of Solar + Storage on a large scale is growing in popularity as we look for innovative ways to firm up the production of solar energy and turn solar into a truly dispatchable energy ...The solution I'm designing is based on a limited budget, otherwise I would add more batteries and go to DC coupling. But, remember storage is not really necessary in that case. I should review my calculations to see if I can run with 3 mppt and less solar panels.

Jun 15, 2018 · Learn What AC & DC Coupling Mean for Your Solar Battery Storage System. When you decide to add battery storage to your solar system, there are two main ways to connect or couple these two sources — known as AC or DC coupling. AC & DC are the two types of voltage used to transmit and conduct the electrical energy you use at home every day.