First check to see if there are any green energy programs available from the power company in the area. Check to see if there are any net meetering laws in effect.
You didn't specify the output voltage of the gen.
If my figures are correct, and the kwa is meant to be kva, 240v output is a little over 1041 watts or you will get 24kwh per day. Not shabby at all. Would just meet my current useage around here. You will also have to have some way to synchronize with the grid to be able to feed power.
Someone please let me know if I calculated this incorrectly. Just my 'gut' feeling is that you can get lots more power than this from a wheel this size unless it is a very low flow. If my calcs are in error, please post a correction so that I may learn from my mistake.
If there is a green power or net metering program, you should be able to get the power purchase figures from the power company. Otherwise, you will have to set yourself up as a small power producing company to sell power to them (at much lower than consumer rates) and go through all the regulatory hassles associated.
I am in SC and although I don't have any viable means to produce much, if any, excess power here, I am in an area without net metering or any green power programs (Greenville-Spartanburg). I have checked a little and the only way other than just feeding power and running the meter backwards, is to set myself up as a power company. Any drastic change in consumption, or certainly a negative reading, will bring someone to inspect the situation.
I paid 8¢ per kwh on my last power bill. If they bought at the same rate, and my calculations aren't faulty, you aren't going to get rich, it's about $2.00 per day at 24kwh per day.
Steve