In addition, the land a wind farm occupies can often be used by and large just as it had been before, e.g. for grazing or agriculture. Indeed, it can be considered the major land-use change for offshore wind farms, which critics say detract from landscape and coastal views and lower the value of homes in areas with recreational value and, in particular, on the seaside. The first is the dominant source of solar power (139 GW of installed capacity compared to 3.4 GW of the latter) and has been the focus of studies on land requirements (REN21, 2014).