Planning a grid-tie system
Hi everybody. I am beginning to plan a grid-tie system at my home in Los Angeles. I'd appreciate any direction anybody would care to give.
My experience is with generators and small off grid solar panels, and extensive home and industrial electrical work. However, I've recently been amazed at how cheaply I can pick up new solar equipment in LA, and want to start accumulating the supplies I will need in preparation for drawing up the plans and submitting them to the building department for permits. I know that this is somewhat backwards, but I figure, if I can't afford the equipment, I don't want to go through all the trouble of submitting plans!
I've measured my roof and found that I can fit twelve 270 watt panels on it. I'll want micro inverters because the roof gets shade in the afternoon and I'd rather have each panel feed the most it can into the grid. I can get Talesun 270 watt 60 cell panels for $110 each and Siemens/Enphase M215 microinverters for $50 a piece, all brand new.
For some reason, most solar arrays on houses near mine are quite a bit smaller that what I plan - I figure that those can;t supply much juice. But, I've done some rudimentary calculations and found that the panels will supply something like half my household's needs. Does that sound about right? We really don't use much electricity. Also, do you think that the panels and inverters are workable in my situation?
Many thanks for any advice.
0 · Share on Twitter