Greg Can Be Reached at : solarbygreengreg@gmail.com 727-219-9785 text or call For Product Sponsorships , Solar Consulting and quote , etc I’m located in Tampa , Florida Area but I do have contacts with solar companies across U.S.A.
Nice review! Though mostly based on literature it seems, ie not much actual real world performance... I have had this system with two batteries for about a year now. They seem to work well. The battery specs are somewhat "aspirational," however, in terms of usable kWh and in/out cycle efficiency. (The actual I got out of a battery was about 83% of the 13.6 kWh nominal, or 11.2 kWh, and the round trip efficiency was about74-76% when I tested last year. Apparently the energy "tax" of a couple hundred watts for running the controller is also ignored in the published spec.) The app has a lot of small to medium issues. Sometimes it "lies" (and I'm not talking about the "noise" of a few hundred watts being shown going "the wrong way" sometimes). For example, for Home (energy usage), it often shows about double or triple day totals compared to what the utility meter shows in aggregate. (It contradicts even Franklin's own downloaded data, which agrees with the utility.) Also, what I don't like is not being able to limit the charging power (5 kW per battery). as well as the max level to charge to below the 100% hard-baked into the controller (at least when not in emergency "storm hedge" mode), both in order to reduce long-term wear of the battery. Furthermore, no easy way to confirm if guaranteed capacity still in spec as the years go by towards the 12y warranty limit. (The lifetime throughput limit of 43 MWh should not trigger in normal cases.)
Thanks for watching .. interesting observations ... the data mismatch I think is because FRanklinj periodically updates it's not real time ... Not sure how often Franklin updates...
@@solarbygreengreg They update every 5 minutes, I think, at least if looking at the data logs, twelve entries per hour. The infrequent updates could introduce some inaccuracy or noise in the data, but having for example app reported "home consumption" systematically about 2x of actual (at the expense of grid upload numbers) cannot be explained by that IMO.
When grid is down .. Franklin can run home on battery .. if sun shining on solar panels the battery will be charged by solar even if grid is down .. thanks for watching!
Greg Can Be Reached at :
solarbygreengreg@gmail.com
727-219-9785 text or call
For Product Sponsorships , Solar Consulting and quote , etc
I’m located in Tampa , Florida Area but I do have contacts with solar companies across U.S.A.
Great job explaining the system. I’m planning on using 2 of them on my house.
Sounds good! Glad it was helpful!
Nice review! Though mostly based on literature it seems, ie not much actual real world performance... I have had this system with two batteries for about a year now. They seem to work well. The battery specs are somewhat "aspirational," however, in terms of usable kWh and in/out cycle efficiency. (The actual I got out of a battery was about 83% of the 13.6 kWh nominal, or 11.2 kWh, and the round trip efficiency was about74-76% when I tested last year. Apparently the energy "tax" of a couple hundred watts for running the controller is also ignored in the published spec.)
The app has a lot of small to medium issues. Sometimes it "lies" (and I'm not talking about the "noise" of a few hundred watts being shown going "the wrong way" sometimes). For example, for Home (energy usage), it often shows about double or triple day totals compared to what the utility meter shows in aggregate. (It contradicts even Franklin's own downloaded data, which agrees with the utility.)
Also, what I don't like is not being able to limit the charging power (5 kW per battery). as well as the max level to charge to below the 100% hard-baked into the controller (at least when not in emergency "storm hedge" mode), both in order to reduce long-term wear of the battery. Furthermore, no easy way to confirm if guaranteed capacity still in spec as the years go by towards the 12y warranty limit. (The lifetime throughput limit of 43 MWh should not trigger in normal cases.)
BTW, that "
Thanks for watching .. interesting observations ... the data mismatch I think is because FRanklinj periodically updates it's not real time ... Not sure how often Franklin updates...
@@solarbygreengreg They update every 5 minutes, I think, at least if looking at the data logs, twelve entries per hour.
The infrequent updates could introduce some inaccuracy or noise in the data, but having for example app reported "home consumption" systematically about 2x of actual (at the expense of grid upload numbers) cannot be explained by that IMO.
Day time when grid is down, the Franklin battery run Grid tie inverter or only provide battery backup
When grid is down .. Franklin can run home on battery .. if sun shining on solar panels the battery will be charged by solar even if grid is down .. thanks for watching!
Can a wind turbine be hooked up to this system?
Not sure about that