Hi Dan, Sorry for the confusion.
Maybe an example would help. Take a 2000 w dc multimode system that is
coupled with a 3600 w ac rated multimode inverter. What percentage of
the dc capacity is inverted into ac capacity. So, roughly 2000 x .9
(wiring and similar losses from array to battery) x .95 for an assumed
5% usage to charge/float the batteries x .98 for dc to ac inverter
efficiency makes me think that 2000 x .9 x .95 x .98 * (4.5 x 365)
yields = 2,752 kWh annually. The utility is assuming roughly 3600 x .98
x (4.5 x 365) {if they are assuming anything at all} = 5,368 kWh revenue
lost. The regulatory assumption overestimates the capacity factor by @49%.
I'll post to the WRENCHES too to help clarify hopefully. Chris
On 8/28/2019 9:10 AM, Dan Lepinski, P.E. wrote:
OFF-LINE REPLY
Hello Chris,
The wording of your question is confusing. You ask about the percentage of DC
capacity vs AC power output, then add batteries into the mix.
What system topology is the focus of your query?
I'll be glad to do what I can to assist. Just need clear direction on the
configuration.
Regards,
Dan
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