View source for What to extent cost of renewable energy will be cheeper?

==Answer==
;1. Wind energy
The cost of wind energy was reduced significantly over the past 20 years due to better equipment design, better siting and taller turbines. This cost will be reduced further according to IEA data. 

[[image:Windpower_cost.jpg|600px]]


;2. Solar energy
Photovoltaic generation is currently inferior to wind energy in terms of cost, but is expected higher cost reduction next 20 years. Following is a technology road map made by the Environment Agency in Japan. Due to this road map, technological development and competition among companies will reduce the cost to around one-third.

[[image:PV_cost.jpg|600px]]