Out of the Box Ideas
Our new heating system is very "efficient". We were amazed at how well it worked and how much money we saved. (expensive / effective / complex)
Effective
The wind turbines "generate" so much energy that the Farm sell some of it back to the electric company. (create / use / lose)
Create
Our apartment building has a large vegetable garden on the roof, and we sell the "produce" to the vegetable market in our neighborhood. (meat and fish / fuel and energy / fruits and vegetables)
Fruits and vegetables