The Price of Solar Power by Luis de Sousa on TheOilDrum.com
The critical paragraph in the entire article:
A perfect concurrency market with a marginal cost of zero is something totally outside the standard study and practice in economics. It is the reason why spot electricity prices collapse during sunny summer days or why during autumn storms there can even be negative prices. These are all symptoms of a market whose price will get closer and closer to zero the larger the number of renewable energy systems connected.Of course, this is not profitable for electrical generation of any kind.