Berlin-based climate research institute Mercator Research Institute on Global Commons and Climate Change (MCC) has released a new study indicating that, in the last decade, the cost of solar power has dropped by 87 percent, and the cost of battery storage by 85 percent.
July last year.
OK, you might be able to get offers at about half the price now then. If things are like they are here.
I calculated our ROI to about 9 years, the company however promises about 6, but I think that’s overly optimistic.