diy solar

diy solar

Use solar to help with Gride power not just one or the other.

RaymondDay

RaymondDay

New Member
Joined
Mar 2, 2021
Messages
18
Is there a solar controller that you can hook up to your AC on the grid power so say you're using 200 watts of grid power and you got a hundred watts of solar power and then you'd only use a hundred watts of grid power and 100 watts of solar power so it shares the power not just one or the other.

Seems like you wouldn't need any battery send just help with your power from the grid and save the cost of paying for the AC power.

I watch the videos and they have the AC input an AC output but it looks like it just turns off one or the other they can't share the connection.

Is there a solar controller that can share the connection, and if so what do they call them?

Thank you.

-Raymond Day
 
Watched a lot of YouTube videos off-grid solar power but it's hard to find on-grid solar power. I'm still not sure if they actually make something like that to share your power with the AC or not just one or the other to merge it,

I guess that's for most people not just off the grid people.

-Raymond Day
 
All grid-tie inverters will do exactly that. Use as much as possible from the solar panels and if it is not enough - get the missing power from the grid.
 
brum said:
All grid-tie inverters will do exactly that. Use as much as possible from the solar panels and if it is not enough - get the missing power from the grid.
Click to expand...
He doesn't want to export to the grid, just pull. Perhaps there is a setting in grid tie inverters to allow this? I'm guessing he doesn't want the hassle of a contract and permits with gridtie or not an option.
 
Most of the grid-tie (if not all) inverters can be configured to limit the grid export to zero.
 
sunsurfer said:
Just put a diode on the mains...:ROFLMAO:

Sorry, couldn't resist.
Click to expand...
Something like 2 of these for each phase look on Amazon $21 for each "Puly Bridge Rectifier MDQ-100A 100A 1600V Full Wave diode Module one Phase with Radiator".

But wow I guess would have to keep with the 60 hertz from the grid so I don't think it's that easy just like you said couldn't resist.

-Raymond Day
 
sunsurfer said:
He doesn't want to export to the grid, just pull. Perhaps there is a setting in grid tie inverters to allow this? I'm guessing he doesn't want the hassle of a contract and permits with gridtie or not an option.
Click to expand...
That's right I don't think got enough solar power to give it back to the grid.
 
brum said:
All grid-tie inverters will do exactly that. Use as much as possible from the solar panels and if it is not enough - get the missing power from the grid.
Click to expand...
It does not seem like that the ones I seen and YouTube and online always change it from one or the other from solar power or AC gride power but not both.
 
RaymondDay said:
It does not seem like that the ones I seen and YouTube and online always change it from one or the other from solar power or AC gride power but not both.
Click to expand...
These are not grid-tied inverters, but off-grid inverters with bypass capability. When unable to supply the demand they fall back to the grid.
 
Look for an off grid AIO (All In One) with the SUB (Solar Utility Battery) function.
This let's Solar do what it can and the grid takes up the slack. If you make more than you use, the excess can charge batteries. Some don't require batteries. But batteries provide backup if the grid goes down.
 
Any one showing a YouTube video of this? To show how it's hooked up and the % of power it helping on the grid power.
 
What Timselectric is saying is depending on your usage vrs inverter capacity and without batteries this savings only during mid day for a few hours which most likely is not you higher usage time but a 3000 watt unit would give the full amount then use grid to makeup the rest
 
Got a Raspberry Pi power Meter and it's saying 622 watts of power using now as I type this. That can go up and down. So I guess that's about average. Furnace is not running right now but when it does it takes a lot of power.
 
Lot of unknowns here...
1) What is your budget?
2) What is your power need?

Any grid-tie or hybrid inverter will do what you're asking but they cost substantially more than some low power low budget inverter from Alibaba
 
Got four 100 watt solar panels 12 volts but I set them to 24 volts so 2 of them make 24 volts. Then I got two 320 watt solar panels they are 24 volts. So that what power need to help grid power.
 
The simplest way is something like this :


You plug your solar panels into it, then plug it into an outlet on your house and you’re done. It syncs to your AC perfectly.

You need to be sure you’re using more power than it generates though.

And get a different brand. I tried one of these and it was kind enough to die in the 30 day free return to Amazon window. I haven’t messed with them since.
 
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