"Much of this spending-installation correlation comes from investment in more expensive offshore wind, which generates more power per megawatt than onshore turbines. Also, onshore turbines are more efficient and produce much more power now, on average, than they did 15 years ago. In terms of investment and capacity, it’s “spend the same, get the same,” but in terms of the cost of power generated, it’s “spend the same, get more generated power at a lower cost.”<p>Solar’s paradigm is different: “Spend more, get more,” then “spend the same, get much, much more.”<p>Solar investment has increased by a factor of 11 since 2004. Solar installations have increased by a factor of 110. Today’s solar asset builders invest an order of magnitude more money than they did 15 years ago, and they build far more generation capacity. And, like wind projects, today’s solar projects generate significantly more energy than those built 15 years ago."