ABOUT OVH: http://www.networkworld.com/article/3062568/cloud-computing/ovhthe-biggest-cloud-vendor-no-one-has-heard-of.html https://www.ovh.com/us/about-us/ The building is the type OVH is looking for as far a low cost, energy efficient. ------------- ENERGY VALUES http://buildingsdatabook.eren.doe.gov/TableView.aspx?table=3.3.8 Average energy cost per square foot per year 2016 is 2.29 and rising. Other typical multistory buildings are all glass or older with very low insulating factor so their typical energy cost would be similar to single story buildings. 450,000 square feet * $2.29 per square feet is $1,030,500 yearly energy cost average in the USA. CUBE EFFECT: Average single story building has 2+ Wall and roof sf to 1 floor square foot. This multi story building has the reverse 2 wall & roof sf to 6 floor square feet. This makes the heat and cool need 1/6th that of a typical building! (1 vs 6 sf) The energy cost is directly proportional to the wall & roof sf where heat transfer occurs. One sixth of $1,030,500 average energy cost is $171,750 yearly energy cost. A $858,750 per year enery cost savings! HEAT SINK EFFECT: 75 million pounds of concrete holds a heat sink effect of 75 million BTU's for each degree heat change of the concrete. This will level out any days heat with night cooling with no enery compensation needed. No air conditioning will ever be needed for outside heat. Only if heat is being produced in the building may cooling be necessary. Heat will only be needed if the daytime temperature is below desired temperature inside for multiple days. So if the building is insulated the enery costs can be 1/2 to 1/4 of the above estimated cost or $43,000 to $86,000 vs $1,030,500 per year. An energy cost savings of almost a million dollars a year. concrete 150 pounds per cubic foot glass: low3 windows R3.3 for years now R5, U Factor R2 double pane not LowE R3.3 double pane lowE R5 triple pane lowE R8 SUN R3.3 U= .33 btu per foot per degree differance R5 U= .20 btu per foot per degree differance current pella R8 U= .125 btu per foot per degree diffenace new SUNSTOP Additional Double LowE with 8 inch space. R5 plud R8 R13 U= .07 butu per foot per degree differance Insulate walls to R19, 7th floor roof allready insulated. R19 U = .05 btu per foot per degree differance Floor is 200 wide x 200 long x 1 foot thick floor or 40,000 cubic foot x 150 pounds = total weight 6,000,000 pounds per floor. 10 floors = 60 million pounds. 75M with floors&pillars Floor outside walls 200 long x 4 walls x 10 high = 8,000 square feet of wall per floor. 6,000,000 pounds / 8,000 sq ft = 750 pounds heat sink per each square foot of heat/cold producing wall. Average R factor of 10 equalls U factor of .1 x 20 degree differance x 10 hour day is Heat transfer per square foot of 20 btu per day. 750 pounds / 20 btu per day = 37 days to raise the temperature inside 1 degree. A 40 degree temperature wall differance would take 18 days to raise the temperature 1 degree inside. A 60 degree lower temperature wall differance in winter would take 12 days to lower the temperature 1 degree inside. Four months at zero degrees to lower the temperature from 75F to 65F degrees inside the building at outside wall factor of R10. Almost no refrigeration or heating needed. Typical energy costs: Average building USA 60 Million Square feet uses 6 Trillion BTU per year. OR 100,000 BTU per square foot per year. http://www.erpud.com/comparison.htm Natural Gas Heat at $.70 per 100,000 BTU Electric Cooling at 8 cents kwh is $2.30 per 100,000 BTU Above are all believed to be correct figures but can not guaranteed exactly. They are partly based upon government data which is believed to be reliable but there is no way to verify. The cost of fuel can be accurate for past data but for the future it is absolutely an unknown factor, although all indications seam to say it will rise.