But gas prices begin to rise which allows coal to make a modest comeback with respect to scenario A. This is especially true as cleaner and more efficient coal technologies begin to penetrate the market as assumed in scenarios B through D. In order to offset the tendency for coal-generated emissions to increase, permit prices need to adjust upward.
Gas prices go up and affect coal prices.
The 257 steps that climb steeply above the main shopping street, the Avenida Ferman Sanz Orrio, lead to the old village.