A Sainsbury’s superstore is being powered directly by its own food waste, the first time a retailer has come off the National Grid to power a store. The store at Cannock, Staffordshire, already sends all its food waste to the UK’s largest anaerobic digestion plant. The facility, run by Biffa, turns food waste into bio […]
Google and Apple are tech giants aggressively seeking clean energy for their data centers. On Tuesday Microsoft announced that it has signed a deal to buy wind power from a wind farm outside of Chicago for a 20-year term for Microsoft data center in Chicago is going green. The wind farm will put energy into the […]
Alternative medicine is any practice that is put forward as having the healing effects of medicine but is not based on evidence gathered using the scientific method. It consists of a wide range of health care practices, products and therapies, using alternative medical diagnoses and treatments which typically are not included in the degree courses […]
Renewable electricity production, from sources such as wind power and solar power, is sometimes criticized for being variable or intermittent. However, the International Energy Agency has stated that deployment of renewable technologies usually increases the diversity of electricity sources and, through local generation, contributes to the flexibility of the system and its resistance to central […]
Other renewable energy technologies are still under development, and include cellulosic ethanol, hot-dry-rock geothermal power, and ocean energy. These technologies are not yet widely demonstrated or have limited commercialization. Many are on the horizon and may have potential comparable to other renewable energy technologies, but still depend on attracting sufficient attention and research, development and […]
Geothermal energy is from thermal energy generated and stored in the Earth. Thermal energy is the energy that determines the temperature of matter. Earth’s geothermal energy originates from the original formation of the planet (20%) and from radioactive decay of minerals (80%). The geothermal gradient, which is the difference in temperature between the core of […]
Biofuels include a wide range of fuels which are derived from biomass. The term covers solid biofuels, liquid biofuels, and gaseous biofuels. Liquid biofuels include bioalcohols, such as bioethanol, and oils, such as biodiesel. Gaseous biofuels include biogas, landfill gas and synthetic gas. Bioethanol is an alcohol made by fermenting the sugar components of plant […]
Biomass is biological material derived from living, or recently living organisms. It most often refers to plants or plant-derived materials which are specifically called lignocellulosic biomass. As an energy source, biomass can either be used directly via combustion to produce heat, or indirectly after converting it to various forms of biofuel. Conversion of biomass to […]