The following, not-so-new chart from Bloomberg and New Energy Finance has been making the rounds, and really, it speaks for itself.

In the past couple of decades, the price of solar panels has dropped like a stone — particularly in the last few years. The cost of solar has fallen from $76.67 per watt at its peak in 1977 to $0.74 per watt in 2013.

Of course, there’s some controversy about where all these cheap solar panels are coming from (hint: China). Still, progress!

via Cleantechnica