<i>How much would this 3D Solar Power Plant simulator cost if a company needed to pay for it?</i><p>I reckon 25 days is a fair estimate. That breaks down to;<p>1 day to research sun position, azimuth, etc.<p>2 days to figure out the various bits of maths involved and write code to do the calculations.<p>4 days to build a working interactive 3D model.<p>2 days to build the charts and tables.<p>5 days for a designer to make a great layout, build assets, etc.<p>6 days to bring everything together in a website that works across different browsers.<p>3 days for device testing.<p>2 days to cover meetings, phone calls, etc.<p>At a rate of $800/day that's $20,000. I'd add a $5,000 (20%) buffer on to that to cover unexpected scope changes.<p>$25,000 for what appears to be a single page might sound high, but if the company is getting, say, $500,000 of value from it then it's <i>really</i> cheap. I know of agencies that would charge 10* that if they thought the client could afford it.