Solar Panel Power Estimator - SailNet Community

   Search Sailnet:

 forums  store  

Quick Menu
Boat Reviews  
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Hatches and Portlights
Interior And Galley
Marine Electronics
Other Items
Plumbing and Pumps
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here

Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
Old 07-24-2007
Full Time Cruiser
Join Date: Jul 2007
Location: On board s/v Star
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
AnnapolisStar is on a distinguished road
Solar Panel Power Estimator

I have written a new spread sheet using the Visual basic language to estimate the power from a user specified solar panel rig. This spread sheet will estimate the power at all latitudes, at any time of the day, for any cloud cover and for either the PWM or MPPT charge controller. To my knowledge this is the first sophisticated program of its kind to do this. This model computes the sun azimuth and elevation at a given time of the day, computes the insolation(power) of the sun, attenuates the insolation through the user specified cloud cover, projects the insolation onto the user specified solar panel and estimates the current from either the PWM or MPPT charge controller. It uses scientific models from Global Warming studies for accurate results. Specifically the program provides : AmpHrs vs time of day, Daily amphrs vs latitude, daily amphrs vs month of the year, the amphrs for both the PWM and MPPT controller, the total amphrs and kilowatthrs for the entire year. A special feature of the spreadsheet allows the user to enter his own measurements and compare them to the simulation values. We used this feature onboard the s/v Star and were able to double our power output by making small installation changes verified by the simulation.
A very neat solar panel installation is also described that mounts the panels on top of a bimini. This design requires no drilling through the stainless tubing and includes leveling screws for alignment.

We would be very interested in getting comments on the simulation which is available for free from our web site at If after you have tried the software, and found it useful, we ask for donations of $50 or so. The money goes into our beer and wine fund to keep the crew happy on the s/v Star
Reply With Quote Quick reply to this message Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Charging with Solar Power Kevin Jeffrey Gear and Maintenance Articles 0 07-28-2003 08:00 PM
Choosing and Installing Solar Panels Sue & Larry Gear and Maintenance Articles 0 11-06-2000 07:00 PM

All times are GMT -4. The time now is 09:21 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) LLC 2000-2012

The store is owned and operated by a company independent of the forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.