[RE-wrenches] Inverter ratings exceeding 25kw fir battery backup

[Tyrone Houck]

400a residential service, all electric, 2 full 200a panels worth of loads,
customer wants whole house backup...we want to design it for reliability.




On Mon, Feb 17, 2025, 9:56 AM Dave Angelini Offgrid Solar via RE-wrenches <
re-wrenches at lists.re-wrenches.org> wrote:

> Why is there a need for more than 25KW for residential please? Just
> curious. In Nevada, 25KW is way into commercial.
>
>
>
> *Dave Angelini Offgrid Solar
> "we go where powerlines don't"
>    <http://members.sti.net/offgridsolar/>https://offgridsolar1.com/ <https://offgridsolar1.com/>  <http://members.sti.net/offgridsolar/>
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> text 209 813 0060*
>
>
> On 2025-02-17 9:43 am, Tyrone Houck via RE-wrenches wrote:
>
> Greetings wrenches,
> In Pacific Power territory we are coming up against roadblocks with
> regards to whole house battery backup systems with inverter ratings higher
> than 25kw. Even when the generation capacity is below the 25kw residential
> limit, net metering applications are being rejected based on the inverter
> rating.. The inverter rating in these cases is sized to handle the
> customer's existing loads and will never export more than the 25kw limit
> dictated by Oregon PUC.  I am drafting a letter to Energy Trust, the state,
> etc. But am curious if anyone else gas had this problem or come up with a
> solution. I would appreciate to hear any experiences or similar
> interactions with PGE or PPL or even how this has worked in other
> jurisdictions, states, etc. Any input or support is greatly appreciated.
>
> Tyrone Houck
> Oregon Solarworks LLC
> CCB #204937 LRT #076
> 541-787-1366
> tyrone at oregonsolarworks.com
>
>
>
>
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