alt Hacker NewsI have a goal of setting up solar on my property in the woods that goes directly to a wall of batteries, maybe Tesla, maybe something else. But definitely not going back into the grid. Does anybody have suggestions or advice on how to do this?
Who are the best companies doing this right now in New England? What products are folks using to store electricity? Are there any good resources for this kind of thing?
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How big of an install are you looking to do? I just did a ground mount install on my property. (4kw panels, 5kwh battery) If you are good with your hands, and can follow instructions then I would recommend you do the work your self. The actual installation of the panels and battery are close to plug n play. The cost of an electrician can easily double the project costs for small projects.
For the panels I did whatever was cheapest on signature solar. For batteries and inverter I did eco-worthy. (eBay for that, they run sales pretty often) in total is was $1000 for the panels (that included delivery) and around $1200 for the battery and inverter. If you have a truck then you might be able to find cheaper panels locally.
On YouTube check out DIY Solar Power with Will Prowse. He is a certified electrician and publishes part lists and plans that are easy to follow.
A few things that I've needed to deal with in my off grid setup:
I like the MidNite solar controllers.
LiFePO4 batteries are great, with a few caveats:
- you must use batteries from the same batch, ie you can't upgrade capacity piecemeal, to avoid degrading the new ones
- cable lengths are important because even small differences in resistive losses between batteries can mean that one battery is doing more charging / discharging
- you can't charge below 0\*C, which I'm assuming could be a problem in New EnglandIf you are planning to get a Tesla car with PowerShare (it's slowly expanding to the Model Y and other vehicles) then you only really need one Powerwall 3, because the car when charged acts as ~7+ powerwalls worth of backup.
I've found lots of communities online on both reddit and facebook for solar DIY and there's some youtubers out there that talk about what you need for this and do reviews of different batteries/inverters/panels.
From what I've heard Tesla has a high cost/energy storage rate and you'd be better of going with something else (even if you have a tesla) but it would boil down to are you wanting to set this up yourself or hire a professional to do all the wiring.
All you need is a solar charge controller and a battery, and optionally an inverter.
You dont need a company to do this for you, unless you want pay $$ to connect wires.