Hybrid Car – More Fun with Less Gas

Choosing solar kW over grid kW

register ::  Login Password  :: Lost Password?
please rate
this thread
Posted by Jimes on February 1, 2007, 1:55 pm
 
Newbie question:

If I have two sources of power: I have a grid connection which can supply me
11kW and I have a small solar power system that can supply me 5kW.

Let's assume I have a 6kW load at any one particular point.

How can I ensure I use 5kW of solar created power and then only 1 kW of grid
power? Could it happen that all 6kW are drawn from the grid?

Thanks
Jimes.



Posted by Anthony Matonak on February 1, 2007, 7:39 pm
 
Jimes wrote:

There are grids and there are grids. In a sense, if you have a grid-tied
inverter then all the solar power goes into the grid. All your loads
take their power from the grid. It's all grid.

That said, in most grid-tied solar installs the power company meters
only measure how much energy you get from the power company. If you
generate 5kW and have a load of 6kW then the power company winds up
contributing the other 1kW and will bill you accordingly.

Better yet, if you have net billing then it's likely your power meter
will run backwards when you generate more power than you use. This
essentially 'banks' those kWhs for later use.

Anthony

This Thread
Bookmark this thread:
 
 
 
 
 
 
  •  
  • Subject
  • Author
  • Date