emp schematic circuit

… it is possible to have local “hot spots” where penetration on a single distribution circuit is very high. In this case utilities have concerns that power quality will suffer on that distribution circuit due to the high penetration of PV. KIUC is testing that hypothesis to the extreme with its 1.2 MW solar farm, by supplying 100% of a distribution circuit with PV during the day.

Now for the good news: as the utility monitors the distribution circuit on sunny days and cloudy days, with the PV system turned on and the PV system turned off, they are seeing very little difference in the voltage levels, harmonics, and overall power quality between the different …

… annually for each wind turbine. (Alex Garcia/ Chicago Tribune)

By Julie Wernau | A Circuit Court judge cleared the way this week for a lawsuit filed by a group of DeKalb County residents who claim 126 wind turbines are there illegally and want them torn down.

The wind farm was the subject of a Tribune story this March that highlighted the health complaints of residents living near the structures. Residents who live nearthe turbines, which are about 400 feet high from blade to tip, have complained of …