(1m) For each calendar year, the commission shall determine the total statewide conventional energy percentage for purposes of calculating the amount of RRCs per MWh to be created for displaced conventional electricity. The commission shall make this determination the calendar year before the calendar year in which the percentage will be used. The commission may, by order, also establish a different percentage for a specific type of displacement facility if its seasonal or daily operating characteristics justify a percentage that differs from the annual average percentage. Note For example, the commission will determine the 2016 total statewide renewable energy percentage in 2015 using information taken from electric provider reports, filed with the commission by April 15, 2015, that reflect renewable energy sold to Wisconsin retail customers in the calendar year of 2014.