Suppose you won 1,000 gallons of gas but you had to use it in a year, would you figure out ways to burn it by driving extra, etc?
With the gas scenario, the external "costs" (pollution) are obvious but running a server isn't free (of external costs) either.
Just a thought.
You funded your project through a blog and social media campaign dedicated to awareness of fossil fuel pollution and sold ads only to solar companies and bike manufacturers.
In would later estimated that your 1000 gallon investment created enough good will and awareness to save an estimated 10000 gallons per year and launched you a new career as a pro green/solar consultant.
What then buddy?