There's an exponential curve: https://www.google.com/search?site=&tbm=isch&source=hp&biw=1366&bih=638&q=solar+technology+growth&oq=solar+technology+gro&gs_l=im

There's an exponential curve: https://www.google.com/search?site=&tbm=isch&source=hp&biw=1366&bih=638&q=solar+technology+growth&oq=solar+technology+gro&gs_l=img.3.0.0i24k1.1492.7533.0.8529.15.15.0.0.0.0.218.1585.5j5j2.12.0....0...1.1.64.img..3.12.1575.0..0j35i39k1j0i30k1j0i5i30k1j0i8i30k1.sEN4LcRi4bU https://www.google.com/search?site=&tbm=isch&source=hp&biw=1...