Energy Storage for Hybrid Power Systems

buckmanbuckman Registered Users Posts: 1
we are establishing a Hybrid (Solar + Diesel) Power System at one of our Commercial locations in the Caribbean and would like to get some advice on the most cost effective technology to use for Battery Storage.
The requirement is for a total of about 250kW at 600VDC.
any advice would be welcomed.


  • BB.BB. Super Moderators, Administrators Posts: 30,502 admin
    Is that kw peak power or kwh of stored energy?

    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
  • mike95490mike95490 Solar Expert Posts: 8,761 ✭✭✭✭✭
    You are going to need to hire an electrical engineer to set this up. it's way larger and the 600V is far above the standard gear used by 99% of the regulars on this forum.
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    gen: ,

  • zonebluezoneblue Solar Expert Posts: 1,218 ✭✭✭✭
    Well it depends on how you define cost effective. FLA is the old standby around here, but LiFePo4, and sodium ion are new comers with a lot of promise. Its possible to demonstrate better return on investment from lithium for instance depending on whose numbers you use, what your freight deal is, and how you cost maintenance.

    For bigger systems like the one you are proposign lithium has further advantages, that the production is generally very uniform slash binning to a high level such that parallelling of cells is a lot more reliable than with lead. If it was me in your shoes id definately be taking a serious look at these new technologies.
    1.8kWp CSUN, 10kWh AGM, Midnite Classic 150, Outback VFX3024E,

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