Re: Power Supplies, Saving Money, and switching vs. Linear?

[nobody@xxxxxxxxxxxx (Dave Houston)]

"Bill Kearney" <wkearney99@xxxxxxxxxxx> wrote:

>> It is almost free once you spend the huge $ for the panel, charge
>controller
>> and battery.  However, others in the alt.energy.homepower newsgroup have
>> calculated that if you have commercial power, the payback on your
>investment
>> is something like 18 years.  Not worth it.  No business case.
>
>Well, to some the piece of mind that they're not wasting that much more in
>the way of fossil fuels is worth the investment.  It's not purely a matter
>of costs.  18 years (and more) of not being yet another fuel consumer.

Minus the fuel consumed to manufacture and transport the switchmode supply
(and its constituent parts). The case for replacement is still weak.

And the 18 years is also rather iffy. There might be some new technology
that comes along in 2-3 years that obsoletes both types of power supply.