Solar prices have been declining at a rapid rate, the cheap got cheaper and now it’s time for it to reach new lows: the cheapest.
Last year we saw the price per watt hover around 0.75 USD which is well below the forecast price of solar: could the shift be cheaper than we think (have a look at the graph from treehuggers on a similar topic)?
With solar prices going down, solar energy cannot be ignored and turned away anymore. Many developed and developing countries have already jumped into the pool to explore and gain the maximum from the potential of solar power. This reneable source of energy has become 100 times cheaper over the last 35 years and the good news is, it's only going to get cheaper.
In an article about solar cells, the University of Oxford talks about how cells made from perovskite have been able to reach remarkable efficiency rates and, in a few more years, will be able to produce efficiencies between 20-30 percent. They believe wel will see these perovskite cells in commercial use within the next few years.
An article by PV magazine also focussing on perovskite solar cells tells us that these solar cells can be assembled by spreading pigment onto a glass or foil substrate, with layers of other materials to facilitate the movement of electrons. Previously, perovskite solar cells have been unstable, however recent developments have met this challenge by replacing a liquid electrolyte with a solid material.
The milestones which we have already reached in terms of solar energy are already very significant and more research and development in this field will help bring the shift to such a state where saying no to solar would be (hopefully) highy improbable.