EcoRenovator - View Single Post - Off-the-grid with grid-tie inverter?

servant74 · 07-30-12, 11:31 PM

Thanks XRinger....

I could see for big installs the microinverters could possibly even reduce the cost of a solar system, even non-gridtie, given the better power transmission efficiency of AC vs DC. (Reduce size of wire as voltage is raised, for the same power capability). But you are right, on small (like most home or small commercial) installs, it is better just to use bigger wire or re-locate the power equipment to optimize the power transfer. Converting the AC back to DC for battery storage adds yet another inefficiency in the system.

Thanks again for the quick reply.

07-30-12, 11:31 PM	#63
servant74 Lurking Renovator Join Date: Jul 2012 Location: Near Nashville TN Posts: 6 Thanks: 2 Thanked 1 Time in 1 Post	Thanks XRinger.... I could see for big installs the microinverters could possibly even reduce the cost of a solar system, even non-gridtie, given the better power transmission efficiency of AC vs DC. (Reduce size of wire as voltage is raised, for the same power capability). But you are right, on small (like most home or small commercial) installs, it is better just to use bigger wire or re-locate the power equipment to optimize the power transfer. Converting the AC back to DC for battery storage adds yet another inefficiency in the system. Thanks again for the quick reply.