Up until 2009, the cost of wind power had been rising steadily and reached a peak of $70 per MegaWatt-hour. Since then, the prices of hardware have dropped dramatically, making wind energy incredibly affordable at an all-time low of below $20 per MW-hour. Wind energy only accounted for 6.5% of electricity in the US last year, but at such a low cost, it is challenging the natural gas industry. Wind power is expected to only rise $10 per MW-hour by 2050 while natural gas is already breaching $20 per MW-hour. Improved technology and design allow for more wind energy to be harnessed per turbine, making the yield much cheaper. As tax credits for the construction of renewable energy start to fade out, more projects are expected to utilize wind power soon.