Why would Ontario Power Generation buy solar electricity at 42 cents/kwh and sell it for maybe 4.8 cents/kwh?

City going solar as part of green plan | Online Pioneer Plus

“The exact cost [of the solar panels and installation] is $43,396.33 plus GST. The exact amount of money from MECF is $11,361. The solar panels should produce approximately $3,440 of income per year,” said Carr-Braint.
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“This is a perfect opportunity for us to put Belleville on the map as being one of the first communities with a municipal solar power system,” he said.
Ontario Power Generation will purchase the energy produced from these solar panels at 42 cents per kilowatt-hour.

Nov 21, 2008: Ontario Power Generation reports 2008 third quarter financial results

OPG average sales price 4.8 [cents/kWh]