## A ground-coupled heat pump can meet three energy end-use applications: space heating, water heating, space cooling.

In 2013, federal data show that these three temperature applications consumed 84% of all energy in the residential sector; the balance of 16% was for plug load, lighting, appliances, etc. http://oee.nrcan.gc.ca/corporate/statistics/neud/dpa/menus/trends/comprehensive_tables/list.cfm

__The details:__

- all households in Canada consume 1,517.5 PJ of energy, of which 1,274.3 PJ is for space heating, space cooling, heating water

- all households emit 66.2 Mt of GHG, of which 56.7 Mt (85.6%) is from these three temperature end uses

- for the __average__ household, total annual energy consumption (temperature AND plug) is 30,500 kWh

- a NZ+HP requires 7,800 kWh to operate *(minimum COP of 3.2)* so total consumption for the whole house is 12,700 kWh

- production of renewable energy from the ground is 25,600 kWh

**The definition of a net zero energy house is one which produces at least as much energy over a year as the building consumes during that period.**

A basic NZ+HP produces twice as much energy over the year as the whole house consumes - it is net zero times 2.

A basic NZ+HP produces twice as much energy over the year as the whole house consumes - it is net zero times 2.