Along the distribution lines, power outlet voltage slowly decreases.
Utilities try to keep voltage low at beginning of line to reduce consumption from water tanks.
At end of line, a minimum voltage must be preserved.
THE GRID AT RISK
When adding electric vehicles and solar PV, grid voltage becomes unstable and causes some DER to disconnect, increasing the problem
Up to now, classic solar inverters were acceptable as urban DER penetration was still low
Nowadays, with higher DER penetration, new technologies of stability, voltage control and communications are now required
Reactive Power is the state when the current output of the inverter is not in phase with the grid voltage. It almost does not require energy to push current as it is happening at a moment when the voltage is low, thus it consumes no Real Power.
Grid Edge Services
Reactive Power also make the grid voltage increase (lagging) or decrease (leading). By shifting current from grid voltage (reactive power) combined with telecommunications, our technology makes it possible for utilties to lower of boost local distribution line voltage and control stability with almost no real power (ie. at night):