I have 5 clients in Florida running mini-split heat pumps offgrid. The smallest is a 13 kwh useable and the rest running L16 2v cells @ 48v nominal. Not trying to be a contrarian but with a 2,000 square foot house with great insulation and SEER numbers around 30, it is not that hard. Need alot of solar, and virtual tracking for the afternoon thunderstorms in the south also.
Dave Angelini Offgrid Solar "we go where powerlines don't" http://members.sti.net/offgridsolar/ [1] e-mail [email protected] [2] text 209 813 0060 On Sat, 12 Sep 2020 12:54:39 -0400, Jason Szumlanski wrote: 54kWh doesn't go far for air conditioning in September in Southwest Florida. Trust me. Most homes have $200+ electric bills at $0.10/kWh this time of year, sometimes substantially more. Generator backup, even with 4 Powerwalls, is necessary for mission-critical grid-tied backup situations. Sadly, you can't charge Powerwalls with a generator. You just bypass battery storage and run loads straight off the generator, which means the generator needs to be sized for the whole home. It would be nice to have a generator input for supplemental charging at least with a small portable unit. There is no perfect solution for this application. At least no cost-effective solution. On Fri, Sep 11, 2020 at 6:06 PM August Goers wrote: Hi Bill - I completely agree with your statement about all off-grid applications. Most if not all need generators. And, I do think there are some grid tied applications where generators make sense too, especially for folks who live way out in the woods as you mention. I was speaking about the mass market in CA in cities or towns where the grid is typically fairly reliable. If you install four Powerwalls, for example, you have up to 54 kWh of storage available. There are applications where generators make sense, and all these fires and smoke and heat waves prove the point. I think AC is critical for some parts of the country, and energy storage + PV alone just won't cut it for those critical applications. But, yes, good point. August On Fri, Sep 11, 2020 at 2:33 PM frenergy wrote: August, Quite frankly and with due respect about the comment about more PV and battery to forego the need for a generator, I disagree. Those folks living off-grid in the sticks (um,er, myself included), it would be a very bad thing not to have Gen input. The current situation here in Plumas county (and many other counties right now) is another perfect example. It is so smokey that my daily KWhrs has been cut in half and of course every other off-grid home is having the same issue. This has been going on for almost a month with only occasional breaks. There are also CC failures, FET board craps out, other excrement occurs. We all know there are many critical needs for power especially to run a pump for fire protection, frig for food, communication to know what the hell may coming your way during some event (fire, flood, bad weather) medical needs, etc. In the winter there are at least a few times when there is little or no sun for 1 maybe 2 weeks...that gets to be a spendy array and battery. Certainly, the idea of going that route works for some scenarios but not off-grid. Generators are still a much needed necessary evil. Maybe its a big deal to incorporate that feature in an inverter?? Sounds like bean counting. My $.02 worth Bill Feather River Solar Electric Bill Battagin, Owner 4291 Nelson St. Taylorsville, CA 95983 530.284.7849 CA Lic 874049 www.frenergy.net [5] On 9/11/2020 1:01 PM, August Goers wrote: In CA the market for ESS is primarily grid tied support features driven by SGIP + backup (public safety power shutoffs, folks who live in less stable grid areas, folks worried about natural disasters) so the ESS is designed to replace generators. This might be a little trickier for areas that need air conditioning during a grid outage (or for all electric homes), but one tactic is just to go bigger with the ESS and PV system. I guess what I'm saying is that the value proposition might already be getting better just to skip the generator and go bigger with the storage. Even Generac might be going that route. August On Fri, Sep 11, 2020 at 11:52 AM Jason Szumlanski wrote: We are seeing tons of companies in Florida offering Generac/Pika now. They didn't do it when it was Pika, so why would they now that it has an orange label? Crazy. No generator input makes zero sense and even less sense for a generator manufacturer. On Fri, Sep 11, 2020 at 12:58 PM Chris Schaefer wrote: Jeremy, Pika was bought out by Generac and rebranded as their PWR cell. Most of the old crew from Pika are now working for Generac. It's beyond me that Generac bought them and yet they still don't have a generator input. That's why I could never sign on to the Pika product line. Good luck. Christopher On Fri, Sep 11, 2020 at 11:00 AM Jeremy Rodriguez wrote: If anyone has any info on how to get a hold of The former PIKA ENERGY support group, please contact me off list. Or if anyone knows where one could get one of their inverters rebuilt/repaired let me know. Jeremy Rodriguez Solar Installation / Design Expert All Solar, Inc. 1463 M St Penrose Colorado 81240 Sent by Jeremy's iPhone. 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