How to calculate firing costs: Bridges Pottery

I am a regular subscriber to ceramicsartdaily.org an excellent site for clay artists. I was intrigued by  Bridges Pottery and this video which had so many great studio applications I felt a desire to share it so that others could benefit from this artists work, techniques and tips:

From Patricia Bridges blog [  http://www.blog.bridgespottery.com/  ]:

How to calculate firing costs

Cost to Fire Kiln

I ran a glaze firing and have calculated the costs on my new kiln. Always helpful to know what I am spending and where.

To calculate my costs….

My new Excel Select Fire 7 cubic. ft kiln is 11520 Watts or 11.52 kilowatts

Multiply kw x hrs fired. I also then apply a % based on that cone I fire to since I am not using the full power – about 50% for a bisque and 65% for glaze. This is an estimate- Multiply that x cost of kw (.21). Expensive electric on Long Island:(

Looks like this….

BISQUE
11.52 x .5 =5.76
5.76 x 7=40.32
40.32 x .21 = $8.47

GLAZE
11520 /1000 = 11.52kw
11.52 x .65= 7.488
7.488 x 8.5 = 63.648
63.648 x .21 = $13.37

Here is some of the videos from ceramics art daily:
http://ceramicartsdaily.org/pottery-making-techniques/handbuilding-techniques/bonus-monday-pottery-video-making-pottery-using-slabs-coils-and-textured-paddles/?floater=99

http://ceramicartsdaily.org/pottery-making-techniques/handbuilding-techniques/working-with-slabs-a-ceramic-arts-daily-reader-shares-tips-and-techniques-for-slab-built-pottery/

Brideges Pottery website can be found here:
http://www.bridgespottery.com/

Check out her work – Her website and her blog and subscribe to ceramicsartsdaily.org to get valuable clay information emailed to you directly!
Yours in clay,

Jeremy