Re: OT: Electricity generation

["dermot_bradley" <bradley@xxxxxxxxxxxxxxxxxxxxx>]

--- In ukha_d@xxxxxxx, "Paul Bendall" <paul@...>
wrote:
>
> That leaves us with photovoltaic cells or PVC's which is what most
> people think of as solar panels. If you are only after a few hundred
> watts then these are probably the best option. But then you have to
> consider that they normal generate power when you don't want light so
> you have to store the energy they produce for use when you do want
> it. That means batteries and usually 24v deep-cycle batteries (car
> batteries are not great at going from full charge to low charge back
> to full-charge).

Now that I've got an idea of my baseline power usage for the house
(approx 0.3KwH but I'm still improving it) I've been meaning to sit
down and work out what the paypack period for "entry level" PV
solution would be, say for a 1KwH setup with no battery storage.

I've seen mention that a 1KwH (or is it 1KwP?) panel realistically
generates 0.75KmH.

Basically price up such a system, figure how much in grants I would
get to offset the purchase price, see what the "buy" price is
from the
local electricity company for excess power and calculate likely power
excess generated due summer and winter months, factor in the
electricity power bill reduction gained by the panels driving my
baseline load during daylight, and then see if the payback period is
some realistic timeframe - 10 years? 8? 5? I wonder...



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