What is the generation source least valued by Ontario's electricity market in 2017?
That is the question I asked on twitter the other day. I know it's not the most serious format, it's a small sample size, and my running the poll means there will be selection bias in the responses. I did invite others with different views of the energy world to share it - but they did not.
I got some feedback that the question was unclear. While there are multitudes of factors impacting/corrupting the metric, this question is precise. The IESO allegedly operates Ontario's electricity market, they do publish summaries for hourly generation by fuel (xml format) and they do publish an Hourly Ontario Energy Price (.csv format).
The least valued "fuel" - or generation source - this year as the 22nd of June, is the lowest valued by a big margin, lying 29% below the next least valued.
The lease valued source is the source least expected to be the least valued.
The least valued source is solar.
Which shouldn't come as a surprise.
I'll briefly review the theory, put Ontario's experience in a broader context, and finally cherry pick one day to examine. Cynics may be surprised the day is June 12th, which is the highest demand day of 2017.