Energy produced on the farm.

3 kw windmill for electricity, solar water heating & horse and human power (fed from the farm).

Total annual energy production (windmill, solar, milk, animals, wood, vegetables, cereals etc.) = 279,097 MJ estimate.

Imported energy.

Running tractor, transport & machinery.

Diesel & transport = 154,128 MJ.

Net energy production 279,097 − 154128 = 124,969 MJ off 33.3 hectares.

Net energy production/hectare = 3752.8 MJ.

1 produced to 0.55 used.

Other hidden energy used suggests around 1 produced to 0.75 used, likely to be more accurate.