Great paper and touches on most of the financing issues related to debt. I wanted to draw attention to Nigeria, the Power and Airline Intervention Fund (PAIF) of 300 Billion Naira (~ USD 2 Billion) was introduced to provide debt in local currency at 7% interest rate in local currency for power and airlines to invest in Nigeria. This was a step in the right direction and in line with what the paper outlines.
Now a days, the competition to supply renewable energy has become so competitive, that the PPA price in the RFP in the latest bids in South Africa and India for solar is around USD 100 / MWh or less (at the exchange rate prevailing at that time).
Though, lower interest rates are not a silver bullet, it is a part of the solution that can make clean power affordable in the emerging and poorer nations and bring about development and alleviate poverty.