Gas prices reached their highest level this year in late March – a six-month high. Retail gasoline prices rose in all areas of the country this past month, with the most significant increase occurring in Calgary, Alberta, where prices rose 15.0 cents per litre to 154.9 by the month’...
if the supply of oil increases, the price of one barrel decreases. Conversely, if demand for oil increases (which often happens during the summer), the price rises. Gasoline and natural gas fall into the energy commodities category.