The aim of the brainstorming session should be to generate the most ideas possible within a specific period of time. An effective brainstorming session will last anywhere from 15 to 45 minutes, and 30 minutes is usually ideal. The best number of participants for a brainstorming session is between four to seven people. Any less than four, and you run the risk of not having enough stimulation for creative thinking.
More affordable wind turbines range from $200 to $600. These turbines are typically smaller, which means less electricity is generated. Larger wind turbines can cost as much aâ¦s $2,000 for those used in the home and upwards of $20,000 for those used industrially.
During its first year of operation, their wind turbine produced 6,286 kWh of electricity â worth about $627 at the current retail rate of $0.10 per kWh. That means that the $40,500 wind turbine will have a simple payback period of about 64 years. Unfortunately, the turbine is unlikely to last that long.