AKHwyJunkie
New Member
- Joined
- Nov 17, 2020
- Messages
- 13
I've been playing around with LifePo4 & storage for years now, but I kind of want to get into the solar side too. I learn best by doing, but I can't figure out if what I want to do is technically feasible. The project I'd like to accomplish is solar powering my greenhouse.
The problem I'm running into is that sometimes I use 2kwh+ a day for greenhouse cooling and I don't want to build a system that big just yet. I'd like to start with a 200-400 watt (1000-2000 wh) system, which will cover most days, but not the hottest of days. Load is a transient set of fans, about 180 watts total. I want to do some sort of inexpensive "grid tie" system, but not in the traditional sense. I want AC to be the backup, only if it's needed. Conceptually, what I want to achieve is if the battery is <50% (depleted), charge it with AC.
I definitely don't want solar & DC backup, I'd rather just spend the AC power. I'd also prefer not to just continually charge the battery with AC, since this would reduce the solar system's input capability, especially early in the day.
I can't seem to find any components that do this. I might just not know what I'm looking for or may be thinking about it wrong. In particular, I'm looking for something on the cheaper side as the ROI on <2kw/day is not exactly stellar. Is this just unobtanium or what am I missing?
The problem I'm running into is that sometimes I use 2kwh+ a day for greenhouse cooling and I don't want to build a system that big just yet. I'd like to start with a 200-400 watt (1000-2000 wh) system, which will cover most days, but not the hottest of days. Load is a transient set of fans, about 180 watts total. I want to do some sort of inexpensive "grid tie" system, but not in the traditional sense. I want AC to be the backup, only if it's needed. Conceptually, what I want to achieve is if the battery is <50% (depleted), charge it with AC.
I definitely don't want solar & DC backup, I'd rather just spend the AC power. I'd also prefer not to just continually charge the battery with AC, since this would reduce the solar system's input capability, especially early in the day.
I can't seem to find any components that do this. I might just not know what I'm looking for or may be thinking about it wrong. In particular, I'm looking for something on the cheaper side as the ROI on <2kw/day is not exactly stellar. Is this just unobtanium or what am I missing?
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