The deliberate interference with the substation's electricity equipment was condemned by NIE safety manger Kevin McDowell.
Plans for pylons and the substation have been criticised and several public meetings have been held.
No one was injured during the incident, but the substation was substantially damaged.
The company said the substation at Ballysillan was vandalised on Sunday and again on Monday evening after it had been repaired.
Fire crews helped prevent water damaging the substation on Boxing Day which supplies about 40, 000 properties in Reading and south Oxfordshire.
By Monday night a temporary barrier around the substation was completed and pumps had been installed to keep ground water from rising.
Instead, he says, it should be on the "middle mile, " the substation and distribution network that is the least transparent area of power delivery.
ScottishPower's consultation process will help establish a preferred route for the pylons from the planned wind farms to the substation, which will then be subject to further consultation.
For customers in other darkened neighborhoods below Midtown, where power was knocked out Monday night by the flooding of the substation, the path toward power got brighter Tuesday.
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Networks are riddled with circuit breakers that prevent electricity from flowing backward to the substation when voltage drops--the moment when utilities need solar cells and basement battery packs to support the grid.
Mr Gilbert said they were building a replacement substation and salvaging and repairing the network around the vandalised substation.
Much has been written about how antiquated the U.S. electrical grid is the average substation transformer is 42 years old but according to John Kappenman, some of the newer technology is more vulnerable to geomagnetically induced upset than older systems.
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One employee said she believed the blast came from an electricity substation located in the building.
Emergency services in Gloucester are also using sandbags to protect the Walham electricity substation, but 450 homes in Tewkesbury are already without power, along with 150 in Gloucester and 150 in Evesham.
Hundreds of people attended a meeting in Welshpool on 20 April opposing plans by National Grid to build the 19-acre substation.
And with Project Look founder Roxanne Hood-Lyons, he got a police substation on the premises, which has reduced crime in the neighborhood by 53%.
Road access to the site of a new electricity substation is narrow so Western Power Distribution (WPD) agreed the alternative method of transport.
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Some time between 18:00 GMT and 19:00 GMT on Thursday, an electrical substation on a windfarm on the Ballyconnell Road, was set alight.
The FORBES offices are three blocks from an electrical substation that exploded on Monday evening, so there is no electricity there.
The Superdome has a direct line feeding from a nearby Entergy power substation.
It will mean also a substation or a hub, with smaller pylons connecting to wind farms in the uplands.
Bechtel engineers who meet with the Southern Iraq Electricity Co. in Basra each Sunday left a meeting thinking one substation was ready to go fully online, only to return a week later to find it had been completely stripped.
New York City substation, its potential for cascading consequences increases dramatically, but nonetheless is capped by the configuration of the electrical network.
One is a 3.7 mile link connecting two substations and the other is a 1.1 mile patch that will run along a public roadway to a substation.
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