Hybrid Car – More Fun with Less Gas

inverter with dual (battery and utility) inputs? - Page 4

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Posted by bob haller on July 25, 2015, 2:54 am
On Thursday, July 23, 2015 at 9:20:43 AM UTC-4, Vaughn wrote:

in a serious long outage your gas bill wouldnt matter to you

Posted by Vaughn on July 25, 2015, 11:21 am
On 7/24/2015 10:54 PM, bob haller wrote:

Perhaps it wouldn't matter to you...


Posted by Ron Rosenfeld on September 4, 2015, 11:43 am

There is no question that running a fossil fuel generator 24/7 will be more expensive, in most cases, than an RE system.

But the OP wrote he wanted to "ease into" solar.  

If one of the objectives is also backup power during an outage, then a whole different, and more complex series of considerations becomes adviseable.

One of our homes is off-grid, and our fossil fuel generator initially ran about 400 hr/yr.  Adding 2kW of PV cut that down to 200 hrs/yr.  So that is a savings of about $00/yr in propane.
At the time (around 2004), adding the 2kW of PV was about $3,000 (prices have come down quite a bit since then, but I already had batteries and inverters, so those costs were $), so there's not a good payoff.  But it was worth it to me to not have to listen to the generator as often.

Posted by Jim Wilkins on September 4, 2015, 3:20 pm
Have you figured the lifespan cost of batteries?


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