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The water, energy and food security nexus according to the Food And Agriculture Organisation of the United Nations (FAO), means that water security, energy security and food security are very much linked to one another, meaning that the actions in any one particular area often can have effects in one or both of the other areas.
An energy audit is an inspection and analysis of energy use and flows for energy conservation in a structure, process, or system intending to reduce energy input without negatively affecting output. Energy audits can determine specific opportunities for energy conservation and efficiency measures as well as determine cost-effective strategies ...
In 2006 there were about 65,000 dairy farms in the United States, although most had fewer than 200 cows. [3] One "resource auditor" believes it is possible for dairy farms to reach an energy usage of as low as 200 kWhr per cow per year [4] although an analysis of California dairy farms found that 300 kWhr/year was the lowest actually attained.
Sustainable agriculture is farming in sustainable ways meeting society's present food and textile needs, without compromising the ability for current or future generations to meet their needs. [1] It can be based on an understanding of ecosystem services. There are many methods to increase the sustainability of agriculture.
The impact of the 1973 oil crisis and the emergence of the OPEC cartel was a particular milestone that prompted some countries to increase their energy security. Japan, almost totally dependent on imported oil, steadily introduced the use of natural gas, nuclear power, high-speed mass transit systems, and implemented energy conservation measures. [16]
Energy rationing may include penalties such as surcharges and disconnection from electrical supply for those who choose not to reduce their demand voluntarily. Load shedding is a common form of energy rationing used when electricity markets cannot keep up to demand, particularly peak demand .
Standby power used by consumer electronics and appliances while they are turned off accounts for an estimated 5 to 10% of household electricity consumption, adding an estimated $3 billion to annual energy costs in the US. "In the average home, 75% of the electricity used to power home electronics is consumed while the products are turned off."
Renewable energy sources are essential to sustainable energy, as they generally strengthen energy security and emit far fewer greenhouse gases than fossil fuels. [49] Renewable energy projects sometimes raise significant sustainability concerns, such as risks to biodiversity when areas of high ecological value are converted to bioenergy ...