The Big Island Forum

Kona, Hawaii a Proud Supporter of KONAWEB!
To promote Your business, Click Here.
* Read Responses * Post a Response * Post a NEW Message * Return to the Forum *
* Previous Message * * Next Response * * Next Message

Not as good as NET, but still OK

Posted by Sierra B on Tuesday, 22 May 2018, at 4:33 p.m.
Send an Email to →

By "monthly offset" do you mean the amount that HELCO subtracts from your bill for the energy you send them from the panels?

I believe the reason you are calculating such a long ROI time is because you are not including in the calculations the electricity from your solar panels that you are using during the day.

A system your size should be generating about 700 kWh per month.
At $0.15/kwh, a $40 to $70/month offset would be about 350 kwh/month.
So you are likely using about 350 kWh per month of electricity directly from your panels.

If you didn't have your panels, you would have to buy them from HELCO at $0.36/kWh or about $126/month.

In that case your total savings over the month are $40 + $126 = $166.
Annualized that comes to $2000 per year. Your payback now is a little over 10 years.

Didn't we go through these numbers a few months ago? I remember you had a lot of afternoon shade at your house.

   Δ Not as good as NET, but still OK
    Jeff N -- Wednesday, 30 May 2018, at 5:26 a.m.

Respond to the Message Above:

Your Member Name:
Your Password:
*Sign up to post on the Forum*     *Click Here to post Restaurant Reviews*
If you have a paid link on KONAWEB, you may direct people to your link, in response to relevant posts.
Please remember the Forum are not to be used for advertising.


Having trouble using the forum? Click Here

* Having Trouble Posting? *      *Forum Rules*   *Forum Humor*

Advertise your business on KONAWEB!
Big Island Events Calendar
The Big Island Forum
Become a Forum Member
5399 Current Members
Visitors Per Day
Travel Info
Keauhou/Kailua Trolley Schedule
Map of the Big Island
Real Estate
Vacation Rentals
Kona Coffee
Restaurant Reviews
Hawaiian Music Events
News from Hawaii
Sunset Calculator
About Vog
Email Forum Members
Photos from Friends
Air Quality Index
Roving Cam Archives