this post was submitted on 25 Apr 2024
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If you have a good handle on DC systems and inverters it's not that bad. Hardest part in my experience is figuring things out with your power company if you're staying on grid.
Also at least in the us, check your town and state for rebates and such. A lot of the time these scummy solar companies are double dipping, charging you 20k and also getting a couple k from the gov through solar programs.
Yeah it's WAY WAY WAY easier if you DON'T grid tie. Off grid inverters with battery are the way to go. they are basically just a UPS on steroids they can take the grid as an input but they will never feed back into it. Meaning your power company need not be involved at all thankfully.
Honestly you really don't need to be all that familiar with the DC Systems either. There's so many amazing resources out there that will literally hold your hand through the whole process. What kind of cut-offs you need to have, what type of Breakers and where. Pass that just don't swap positive with negative and you're basically good to go it's a shockingly simple system which is why it's so disgusting how much they charge to install it
OK I want to look into doing it myself. Where would I start with the resources?
My only reason I wanted to tie to grid is to get in on the NEM that my local energy company offers. A 1 to 1 net metering. I live in Seattle and getting that energy back in the winter is worth it for me
Lots of states are turning hostile towards metered solar, I have no doubt Washington will eventually join them so it might not be long-term a good idea. As for resources https://diysolarforum.com/ has a ton as does https://www.youtube.com/@WillProwse
As for equipment i can't recommend signature solar enough. I've had plenty of problems with the FedEx freight shipping but they've always been good about making sure everything is taken care of if there's any damage without much fuss (always take pictures of even the smallest box damage on delivery)
For example with a goal of about 20k spent This bundle gets you 12Kw of inverter output and 30Kwh of batteries for 11k. Then just grab two Of these solar panel pallets for 28Kw of panels.
Now ofc in summer you will never use that much BUT you should be sizing your array to account for the winter months rather than solar. If you indeed want to go grid tie you could get one of their bundles with the larger 12k single unit as I'm pretty it can backfeed