|Global investments in 2011 in billion USD in different types of renewable energy. Right hand figures show 2011 growth on 2010.|
|Global investments in billion USD in 2011 by region.|
|Levelised costs of different renewable energy technologies, costs in USD/MWH, Q1 2012 vs Q1 2011|
There are other problems associated with renewable energy such as the fact that the most popular solar and wind are variable in nature and are therefore challenging to manage. This is an issue we will have to look at in a later post.