William, Wrenches, can we assume the utility voltage is 120/208 of so Fronius has some inverters that do that, if it is 277/480 then SMA can do that but neither of them are less then 10k, Enphase does not have a 3 leg inverter just 1/2,2/3/,3/1 leg balance but you can do that with most any single phase inverter. We have had several customers that got hit with Xformer upgrade charges at time of PTO which is a real problem. I agree that is you go solar that the bill would be close to zero now that would trigger the 20 k bill to your customer, better off paying it now and getting FTC while you can. Jerry
On Wed, Jan 16, 2019 at 12:30 PM William Miller <will...@millersolar.com> wrote: > Friends: > > > > I am engaged in a rather complicated decision process regarding an AG > customer in PG&E territory. The customer spends a lot of money pumping > water and wishes to offset that cost with installation of a grid-tied > system. His two services are decrepit and have to be upgraded. There was > some question if he will be required to upgrade from single phase to three > phase given the size of his motor loads. We received a waiver to allow us > to continue with single phase although I am not sure that is the right > decision. > > > > We were also informed that the $20,000 cost to upgrade the single phase > feeder to allow bigger services would be waived because of the potential > revenue PG&E would earn over time. There is a review three years out and > if the revenue meets projections based on existing loads, the construction > credit would remain. If, however, after three years revenue decreased, the > credit would be rescinded, requiring the customer to fork over the 20 grand. > > > > I was told that if we install solar and zero out the annual bill, that > reduction in billing would trigger the rescinding of the credit. I want to > check that the utility is interpreting this correctly. Do any of you > esteemed wrenches have any experience in this area? > > > > Another question: If we go three phase and I wish to use inverters with > two hot leads, I know they will work on three phase, but the back-feed will > be imbalanced. I know we are allowed some amount of imbalance, but I am > not sure how much. Anyone know this answer? > > > > I am searching for true three phase inverters in the less than 10kW > range. This would require a connection to all three phases. I believe > Enphase can do this. Are there any other units you know of? > > > > Thanks, > > > > William > > > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > >
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