Surprised to see that New England is that best region in the US for solar, and the sunny south east, the worst.
Also, from our model, it only makes financial sense to add a battery to solar in Hawaii and California.
In Massachusetts, the export value of solar is almost the same as the retail electricity cost. Therefore there are no added savings when adding a battery. The difference in net savings is the additional upfront cost of the battery, and replacement after year 12.
Is that right?
