Questions? Call Us Directly at 720-575-7600

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 We will be closed the week of October 17-23.  

Thank You for Contacting Sunshine Works

We will respond to your request as soon as possible.

Note that the off grid solar market is the busiest it has ever been since we started in July 2007.  If you do not hear from us as soon as you need, please call 720-575-7600.  Our quote backlog can run as long as 3-7 days.

If you are requesting a quote on an off grid solar energy system or kit, you can download our Successful Off Grid System Design Primer which will be helpful for determining the electrical loads to properly size your system.

Download the Successful Off Grid System Design Primer with Excel Workbook in a ZIP file.

Download Ron Castle's Internet vCard for your contact program.

You can always contact us by phone: +1.720.575.7600

Sunshine Works

sales [at] Ron and Pam Castle and Kristan Ware 401 Lynchburg Road Winchester, Tennessee 37398 USA

+1.720.575.7600 Phone Toll Free

Office hours:

Monday to Friday 8:00 AM to 5:00 PM Central Time Zone (Daylight Time during the season) Note that Ron is usually in the office by 5:30 AM

Saturday and Sunday by Appointment

Neal Creek Farm tours to see our 5 soon to be 6 working solar installations by appointment. 

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We are in the Central Time Zone same as Chicago and Dallas GMT-6.  We observe Daylight Savings Time which is GMT-5 during the late Spring, Summer and early Autumn.

If you have an urgent requirement or emergency try Ron on the cell phone or SMS to +1.720.575.7600 or Skype roncastle.  Text messaging works best if we are out at the farm.

See our Sunshine Works projects at

We have been living totally off the grid since 2007 and love it. Sunshine works!

A partial list of the brands we sell. If you need help please inquire, we have it. Find out more about renewable energy incentives at

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