Comparison of Power Plants and Process Plants

Your question is too general. You will only get a general answer.

Such as:

• They both have equipment
• They both have instruments
• They both have high pressure piping and low pressure piping
• They both have high temperature piping and low temperature piping
• They both have operators
• They both have maintenance workers
  
• etc.

They also have differences within their own family.

Power Plants:

• There are Solar Power Plants
• There are Geothermal Power Plants
• There are Fossil Fuel burning Power Plants
• There are Coal Fired Power Plants
• There are Nuclear fueled Power Plants
  

There are Process Plants for:

• Refining Oil
• Producing Chemicals
• Processing Foods
• Pharmaceuticals
• Paint
• Plastic
• Rubber
• Paper
• Purifying water
• Treating Waste
  

I suggest you be more specific in you questions.

Also is this part of your homework?