This is largely a problem with grid-tie solar inversion and the fact that solar generation only happens during the day. As long as the utility company has less PV inverted than the difference between their daytime and nighttime loads, it is better for them to have the PV generation. Once the PV generation exceeds the nighttime load, the PV begins to cause more throttling need at the power generation station. It is the difference in the two loads that must be supplied by sources such as coal, oil, and gas because nuclear can supply the constant need portion of the power.
Then the worst case is the PV generation becomes greater than the daytime demand of the system. To continue to buffer this daytime PV generation excess would mean the utility has to perform power storage which requires new capital. The article points out that when the power generated exceeds the load drawn, the voltage will go up which will cause the anti-islanding feature of the grid-tie inverters to trip, turning off PV power generation at that site - the voltage will not go out of control. However, if the grid-tie inverter anti-islanding trips, the inverter is OFF and the user is getting no benefit from his power generation - not even to reduce his home load. This problem can be solved by adding storage at home. LENR distributed power generation would be different because it is around the clock generation. This provides much less headache for the power company - at least until so much power is generated they no longer have a viable business. Bob On Thu, Feb 13, 2014 at 10:47 AM, Jed Rothwell <jedrothw...@gmail.com>wrote: > Hawaii has the most expensive electricity in the U.S. Now they have too > much PV electricity. The power company says it is overwhelming the > distribution network. See: > > > http://www.renewableenergyworld.com/rea/news/article/2014/02/the-interconnection-nightmare-in-hawaii-and-why-it-matters-to-the-u-s-residential-pv-industry > > - Jed > >
