Hybrid Car – More Fun with Less Gas

What are some payback times for systems currently installed? - Page 9

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Posted by Mho on December 19, 2011, 6:56 pm
 
I knew you would see the light!  Just not off the grid though...LOL

But seriously. Not many people will ever see a payback without subsidies.
Time wear on and the project outlook gets better all the time, though. The
topic gets sickening as many thousands of posts have been made on this same
request to the point of just being a troll posting, now. Listen to your
sales person. He/she knows your wallet best. I did it for grid avoidance for
a few years to build my home and because I love the experiment and
technology. After many cold nights and buying $0,000s of work-around
equipment I wouldn't do it again at those prices. I would have dug a trench
a connected to the grid at much cheaper prices. Today I sit with four of my
panels still in the barn and a two wind turbines looking for a bare spot and
I wonder if the garbage man will take them away. nahhhh... I need more
experimentation and TOU is coming to my door some year. I must be one of the
odd dozen in the province not on TOU, yet. After working in that field for
34 years I know they are having trouble metering my setup...LOL


BTW: Sarcasm doesn't fare well in text only media. Yours was really obvious
to me, this time and I liked the candour. It can bite you in the ass at
times. It has me, many times.

All the best.

----------
"Ron Rosenfeld"  wrote in message



What a cogent and well-reasoned argument!

I am destroyed and will resign.

Obviously, since we MUST factor in all of those costs in order to properly
analyze the energy and dollar paybacks, and we must also use only YOUR
values for insolation, cost of electicity and cost of money, you are clearly
in the right and further discussion is futile.


Posted by Ron Rosenfeld on December 20, 2011, 12:37 pm
 


On the serious side, it is absolutely critical to do one's homework properly in
order to determine whether PV makes sense in a particular situation.
In my case, the impetus was a $0,000 cost to bring grid power to the property
we were looking at.

But my analysis was more detailed than what is usually posted here. I wound up
with a hybrid wind-PV system that has had no equipment failures.  Given the cost
of running the power lines, our payback time was zero, and we've been saving
about $200/yr on the electric bills we might have been paying.  That will be
more than enough for maintenance and equipment replacement when needed.

Posted by dold on December 23, 2011, 4:51 am
 
PVWatts says I have 5.48 kWh/m2/day.  PG&E says the average is $.18299.
I let PVWatts do the math.  They say $59.30 per year for a fixed panel.

My panels are actually turned a little more north, which is good, because
of time-of-day rates, but a little too flat on my roof.
Still, I did better than the projected 1417kWh per annum, measuring an
actual 1556.  
Additionally, I am working against tiered rates, with the PV elimianting kWh at
rates
exceeding $.30 kWh.  Plugging in $.30 gives $25.10.

I also have the Time-of-day in my favor.  PV has been a good investment for
me.


I'm not doing 5% on investments recently.  Maybe we need to talk.

http://mapserve3.nrel.gov/PVWatts_Viewer/index.html

--
Clarence A Dold - Hidden Valley Lake, CA, USA  GPS: 38.8,-122.5

Posted by Mho on December 24, 2011, 2:14 am
 You made some really poor investments if you are not getting 5% over the
last 20 years or do you only bring your panels out when the market is poor?
Market sucks, huh?

Trouble with those long insolation factors is your panels can't capture it
without a 3D tracker or some Spanish illegal turning them for y'all. We
don't gotz none of those 'ere.

----------

PVWatts says I have 5.48 kWh/m2/day.  PG&E says the average is $.18299.
I let PVWatts do the math.  They say $59.30 per year for a fixed panel.

My panels are actually turned a little more north, which is good, because
of time-of-day rates, but a little too flat on my roof.
Still, I did better than the projected 1417kWh per annum, measuring an
actual 1556.
Additionally, I am working against tiered rates, with the PV elimianting kWh
at rates
exceeding $.30 kWh.  Plugging in $.30 gives $25.10.

I also have the Time-of-day in my favor.  PV has been a good investment for
me.


I'm not doing 5% on investments recently.  Maybe we need to talk.

http://mapserve3.nrel.gov/PVWatts_Viewer/index.html

--
Clarence A Dold - Hidden Valley Lake, CA, USA  GPS: 38.8,-122.5


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