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2. Data centre tiers - Wikipedia

   en.wikipedia.org/wiki/Data_centre_tiers

   Tier III: full N+1 redundancy of all systems, including power supply and cooling distribution paths Tier IV : as Tier III, but with 2N+1 redundancy of all systems A Tier III system is intended to operate at Tier II resiliency even when under maintenance, and a Tier IV system is intended to operate at Tier III resiliency even when under maintenance.

3. Regional transmission organization (North America) - Wikipedia

   en.wikipedia.org/wiki/Regional_transmission...

   The former Grid West participants who had argued for an eventual RTO, mainly investor-owned utilities and state representatives from Oregon, Idaho, Montana, Wyoming and Utah, formed the Northern Tier Transmission Group (NTTG), a nascent effort open to evolution but initially focused on inexpensive and relatively easy improvements to grid ...

4. Grid-tied electrical system - Wikipedia

   en.wikipedia.org/wiki/Grid-tied_electrical_system

   A grid-tied electrical system, also called tied to grid or grid tie system, is a semi-autonomous electrical generation or grid energy storage system which links to the mains to feed excess capacity back to the local mains electrical grid. When insufficient electricity is available, electricity drawn from the mains grid can make up the shortfall ...

5. Teesside power station - Wikipedia

   en.wikipedia.org/wiki/Teesside_power_station

   Teesside Power Station is a former gas-fired power station, in Redcar & Cleveland, England.Situated near the Wilton chemical complex, the station had combined cycle gas turbines (CCGTs) and open cycle gas turbines (OCGTs), however in 2011 the operation of the CCGT part of the station was suspended, and in 2013 the owners announced its closure and plans to demolish it.

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Ice storage air conditioning - Wikipedia

   en.wikipedia.org/wiki/Ice_storage_air_conditioning

   The process can reduce energy used for cooling during times of peak electrical demand. [1] Alternative power sources such as solar can also use the technology to store energy for later use. [ 1 ] This is practical because of water's large heat of fusion : one metric ton of water (one cubic metre) can store 334 megajoules (MJ) (317,000 BTU ) of ...