Real Goods


Micro Inverters

May 19, 2011 by Real Goods in RealGoodsTV with 5 Comments

Real Goods’ Erik Frye explains the purpose of a micro inverter in a photovoltaic system. A micro inverter converts the DC electricity generated by a solar panel into the 110-Volt AC electricity our household appliances use.

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  1. MargoOctober 8, 2011 at 3:51 pmReply

    Do the micro inverters run off of DC or AC power? I am interested in having a grid-tied system, but I want to be able to use the solar energy when the power goes out. It seems inverters require AC. I was wondering if the micro inverters run off DC, which would allow me to get power from the panels when the grid is down?
    Thank you!

  2. Sean ConnollyNovember 15, 2011 at 5:11 pmReply

    Yes, micro-inverters run off DC power, but DC from panels, not batteries, and do not store power themselves. Inverters do require AC only in the sense that, if we’re talking about typical “grid-tied” inverters, they’ll shut down without grid power. But by definition, inverters change DC current to AC current. So micro-inverters do run off DC, but not the DC from batteries, which you would need to store any power for use when the grid is down.

  3. Can't We All Just Go Solar? Find Out if Solar is Right For Your Home | Real GoodsMay 1, 2012 at 10:11 pmReply

    [...] will be achieved without having to cut down any trees. Additionally, there are many tools – like micro-inverters – on the market today that can help minimize the effects of shade on your [...]

  4. Solar Power Myth No. 72 - If One Panel Goes Out, They All Go Out | Real GoodsAugust 1, 2012 at 4:11 pmReply

    [...] of your panels would go down with it. With 2 strings, half the panels would go down. Arrays using micro inverter technology basically allow each panel its own string, so one panel’s performance would not affect any [...]

  5. Letting EV and PV Combine to Make the Sun Work Harder |Real GoodsOctober 8, 2012 at 5:23 pmReply

    [...] I knew the pricing structure, so there was nothing to negotiate. They were quality panels and the micro-inverters I wanted. There was no discussion other than when to [...]

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