Ill start by saying I second a7e's statement. You will NOT have the possibility of creating 10MWh nor will you get rich off of this. You have to buy the fuel to burn plus you MUST have a LICENSED, CERTIFIED electrician install this system.
Second, power companies usually only allow you to sell back a percentage of excess power.
Example: lets say you use 1000kwh per month. You would only be able to sell back 500-750 kwh PER MONTH. Its called "Net Metering"
Im going to break this down for you plain and simple. Your math is flawed. "Peak" is usually only for about 12 hours a day. To create 500kw in 12 hours, you must have a generator capable of 42KWh or more. Hypothetically lets say you CAN do this. (VERY difficult for a residential customer to be able to supply 42 Kwh via generator) Heres some simple math, 500*0.17 is what? $85.....I dont know how you got to 1000 bucks but your calcs are WAY off.
You WILL NOT be able to sell 100Kwh....I will tell you that right now.
Heres what I figure you can make. Your residence MORE THAN LIKELY has a service of not larger than 200A. Meaning you could not POSSIBLY sell back more than 48Kwh MAX per hour. The PROBLEM is that you still need to overcome your LOCAL (house) energy usage.............I dont know what your KWH usage is but all you need to do is take your per month usage and divide by 30 then 24 and add it to 48 to find what your generator would have to MINIMALLY be rated at.
ASSUMING 48Kwh these are your figures
Per day: 1.152 MW
Per month: 34.56 MW
Per year: 420.480 MW
Gross sales per year: (estimated at averages per Kwh @ $.10) $42,048.
Now a bit of business for ya....Gross means before costs.......lets add in costs....
You need to provide FUEL for 420.480 MWh of energy............whats your fuel source? Manure? Wood?
You need to maintain this system as it will run 24/7/365..........Service call might be upwards of $1000 bucks per incident
you need to install the system (Overhead).............
most utility companies have additional charges such as transmission charges, riders, taxes, etc....you have to factor those in (around here they are about 50 per month, so about $600 per year in extra costs)
You may not even be able to build the generator on your property being as it is used for commercial purposes...are you zoned for this? can you build it legally?
My estimation for NET PROFIT?
$2,000-$5,000 per year.....conservatively....You MIGHT be able to squeeze $10k out of it.
Just as a starting reference heres a 50kw Diesel Generator.
2.4l T Charged John Deere
at 100% load it sucks down about 4 gallons of #2 Diesel PER HOUR
Heres some calcs again
Diesel is about 3.20 a gallon
Per hour: $12.8
Per day: $307.2
Per Week: $2150.4
Per month: $9126
Per year: $110,592
NOW since you MUST use biomass your fuel costs wont be AS BAD but you will still need to provide the energy that 4 gallons of Diesel produces per hour OR GREATER due to inefficiencies.
You will probably have a combustion chamber/boiler and a steam turbine type system.
Diesel has about 140,000 btu/gallon so you would need to create 560,000 BTUs per Hour............Plus have a steam turbine capable of capturing the energy and converting it to kinetic energy with minimal loss of energy.