Glossary

Alphabetical

ABCDEFGHIKLM

NOPQRSTUWY






- A -

Aboriginal Title

When no treaty was signed between the government, and no war was fought over the land, first nations groups in Canada are entitled to the land on which they have historically lived and still inhabit.

Absorber Area

In solar thermal energy collectors, the Absorber Area refers to the area absorbing the radiation

Acidizing

A technique where acidic solutions are pumped into a well, melting away debris about the bottom of the well and allowing the gas to flow more freely.

Alternating Current

An electrical current that reverses its direction at regularly recurring intervals. Abbreviated to AC.

Anaerobic Digesters

A series of processes in which microorganisms break down biodegradable material in the absence of oxygen. Used for industrial and/or domestic purposes to manage waste and/or release energy.

Anemometer

A device used for measuring wind speed.

Annual Mean Wind Speed

The average speed (and direction) of the wind over the course of a year.

Asia-Pacific Economic Cooperation (APEC)

A 21-nation group of Pacific-Rim nations that seeks to promote free trade, raise living standards, education levels and sustainable economic policies. Canada is a member.

Artificial Hydropeakings

The artificially increased discharge of water during the operation of hydroelectric turbines during periods of peak demand.

Ash

Small particles released into the atmosphere as part of the flue gases from a coal plant. Fly ash is dangerous for human health but most power plants use electrostatic precipitators to capture it before release.

Atlantic Margin

The waters off the Atlantic provinces that has been producing oil and gas since the 1990s, and continues to have considerable untapped oil and gas potential. The region has similar geology to the oil-rich North Sea.

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- B -

Background Radiation

'The ionizing radiation which we are all inescapably exposed to every day. It comes from radon gas in the ground, the sun, distant supernovas, and even elements inside our own bodies. The average exposure is around 361 mrem per year for a person in Washington state (it varies by region).

Base-load Power

Base-load power is that provided continuously, virtually year-round to satisfy a regions minimum electricity needs. Hydro and nuclear power are well-suited for base-load grid needs.

Biodiesel

A renewable fuel in which soy or canola oil is refined through a special process and blended with standard diesel oil. Biodiesel does not contain ethanol, but research is underway to develop diesel blends with ethanol.

Bioenergy

Renewable energy made available from materials derived from biological sources.

Biogenic Gas

Natural gas, or methane, that is created by microbes consuming organic matter. Usually found near the Earths surface and is usually immediately released into the atmosphere.

Biomass

Biological material from living, or recently living organisms such as trees, grasses, and agricultural crops. As an energy source, biomass can either be used directly, or converted into other energy products such as biofuel.

Biorefineries

A facility that integrates biomass conversion processes and equipment to produce fuels, power, and chemicals from biomass. The biorefinery concept is analogous to petroleum refineries, which produce multiple fuels and products from petroleum.

Bitumen

Bitumen is "petroleum that exists in the semi-solid or solid phase in natural deposits. Bitumen is a thick, sticky form of crude oil, so heavy and viscous (thick) that it will not flow unless heated or diluted with lighter hydrocarbons. At room temperature, it is much like cold molasses."

Bottom Ash

Bottom ash are small particles that result from coal combustion, but unlike fly ash they are too heavy to be released into the atmosphere and must be stored.

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- C -

Canadian Environmental Protection Act (CEPA)

Passed in 1999, CEPA is "An Act respecting pollution prevention and the protection of the environment and human health in order to contribute to sustainable development."

Cap and Trade

A system where the government sets a limit on how much of a pollutant may be emitted. It then sells the rights to emit that pollutant to companies, known as carbon credits, and allows them to trade the credits with other companies. The EU has implemented a cap and trade program for carbon dioxide.

Carbon Footprint

A calculation based on the set of greenhouse gas (GHG) emissions caused by an organization, event, product, or person.

Carbon Sink

A carbon sink is a natural or artificial reservoir that accumulates and stores carbon-containing chemical compounds for an indefinite period.

Carbon Monoxide

A deadly gas produced from the tailpipe of cars that burn gasoline.

Capacity Factor

The ratio of the actual output of a power plant over a period of time and its potential to output if it had operated at full nameplate capacity the entire time.

Cellulose

An organic compound consisting of several hundred to over ten thousand linked glucose units. Cellulose comprises the structural component of the cell wall in plants, many green algae. It is the most common organic compound on Earth comprising about 33% of plant matter.

Cellulosic Biomass

Fuel produced from wood, grasses, or the non-edible parts of plants that is mainly comprised of cellulose.

Cellulosic Feedstock

The inedible cellulose which comprises most plants and trees. Yields are much higher as any part of the plant can be used and because they do not compete with food, therefore, cellulosic feedstock is an ideal candidate for large scale sustainable biofuel production.

Cetane Rating

Also known as cetane number (CN), this is a measurement of the combustion quality of diesel fuel during compression ignition. It is a significant expression of diesel fuel quality.

Clean Power Call

A request sent out by B.C. Hydro to private power utilities for new electricity-generating projects totalling 5,000 GWh/year. B.C. Hydro will help fund the successful projects and then buy power from them once completed.

Coefficient

How efficiently a turbine converts the energy in wind into electricity. Just divide the electrical power output by the wind energy input.

Co-Generation

Using the energy left over from one primary energy conversion to fuel another. The most prominent example of this are natural gas co-generation plants which first feed fuel into a gas turbine. The residual heat from that reaction then heats water to spin a steam turbine.

Collector Area

In solar thermal energy collectors, the Collector Area refers to the area that intercepts the solar radiation.

Condensates, Gas

A mixture of hydrocarbons present in natural gas. When gas is lowered below the hydrocarbon dew point, a condensate, that is, a liquid, forms. These can be used for combustion just like oil and gas. These are also known as natural gas liquids.

Conventional Electricity Generation

Generation of electricity using fossil fuels.

Conventional Gas

Gas reserves that form beneath porous layers of sandstone. Until recently this has been the only kind of gas commercially extracted.

Coking Coal

When bituminous coal is baked at high temperatures it fuses together ash and carbon, creating coke. Coke can then be used to reduce the oxygen content of iron, strengthening it and creating steel.

Coriolis Effect

A force generated by to the earths rotation which deflects a body of fluid or gas moving relative to the earths surface to the right in the northern hemisphere and to the left in the southern hemisphere. It is at its maximum at the poles and zero at the equator.

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- D -

Decentralized Electricity Generation

Decentralizated electricity generation is a concept used to describe a large number of dispersed energy generators, often closely integrated with the people that use the electricity. Wind turbines and solar panels are good examples: they can be put within communities, be owned by members of the community and generate electricity for it. Alternatively centralized energy generation, far more common in North America, is where a small number of large plants owned by utility companies (hydro-electric, nuclear or fossil fuel) generate large quantities of electricity.

Downstream Operations

The portion of the oil business that involves refining the crude oil, bringing it to market and selling it. Gasoline service stations are the most lucrative part of downstream operations.

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- E -

Effluents

Gases or liquids released by a human-made structure, in this case flue gases from a coal-fired power plant.

Electrolyte

Usually a solution of acids, bases, or salts, electrolytes are substances with free ions which make them effective electrical conductors.

Electrolysis

A simple technique for splitting water atoms to obtain hydrogen, driven by an electrical current.

Emission Levels

Requirements that set specific limits to the amount of pollutants that can be released into the environment by automobiles and other powered vehicles, as well as emissions generated by industry, power plants, and small equipment.

Energy Conversion

Transforming one form of energy into another. Most energy conversions that run our economy are conversions from a primary source to electricity (wind or nuclear) or movement (oil).

Energy Currency

Energy that is usable for practical purposes. These include electricity and petroleum which power appliances and vehicles.

Energy Density

A measurement of the amount of energy stored in a given volume.

Energy Return On Investment (EROI)

This is the ratio of usable energy obtained over the amount of energy required to get it. The oil sands has a low EROI because instead of being sucked out of the ground in liquid form the oil must be painstakingly mined and heavily refined, a process that requires large quantities of energy itself.

Energy Source

An energy source is the means by which energy is generated. The energy profiles each deal with a different source of energy, and most are simply means to attain the energy currency we all use: electricity.

Enhanced Geothermal System

A new technology, EGS does not require natural convective geothermal resources, but instead can draw power from the ground through extremely dry and impermeable rock.

Environmental Assessment Office (B.C.)

The provincial Environmental Assessment Office is a politically neutral agency tasked with reviewing major construction projects in B.C. Their purview includes assessing the environmental, economic, social, heritage and health effects over the lifecycle of projects.

Ethanol-Diesel

A blend of ethanol and diesel fuel. plus other additives, designed to reduce air pollution from heavy equipment, city buses and other vehicles that operate on diesel engines.

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- F -

Feed-In Tariff

A policy device that encourages investment in renewable energies, usually by guaranteeing power producers that their energy will be bought.

Fermentation

In food processing, fermentation is the conversion of carbohydrates to alcohols and carbon dioxide or organic acids using yeasts, bacteria or a combination thereof, under anaerobic conditions. In simple terms, fermentation is the chemical conversion of sugars to ethanol.

Finite Resource

A finite, or non-renewable resource, is one where a limited amount exists. Once the existing stocks of that resource are exhausted there will be no more, at least in any reasonable human time scale. Only so much fossil fuels and uranium exist on earth, making these finite, non-renewableresources. The wind, sun and tides are renewable resources since it is impossible to run out of them.

First Generation Renewable

Well established renewable technologies that emerged early on in the Industrial Revolution. These include hydropower, biomass combustion and early geothermal power.

Fission

Fission is a nuclear reaction where a heavy atom is hit by a neutron, causing it to split into lighter atoms, release more neutrons, and huge amounts of energy.

Flat-Plate Collector

Flat-plate collectors are a type of non-concentrating solar energy collector, typically used when temperatures are below 200 degrees F. They are often used for heating buildings.

Flex-Fuel Vehicle

Also known as a dual-fuel vehicle, this is an alternative fuel vehicle with an internal combustion engine designed to run on more than one fuel, usually gasoline blended with either ethanol or methanol fuel.

Flue Gases

Flue gases are the gases that are released into the atmosphere by a flue, or pipe, from the steam boiler.

Food Vs. Fuel Debate

Many biofuel feedstocks such as corn, sugarcane, and soybeans are also key sources of food for millions of people. Production of crops for bioenergy may displace other food-related crops, increasing the cost and decreasing the availability of food. The central question is one of ethics: Should we use our limited land resources to grow biofuels when the same land could be producing food for people?

Fracking

Hydraulic fracturing is the process of injecting high pressure fluids into deep, geologic formations, in order to fracture the rock and render it more permeable.

Fuel Crops

Crops grown specifically for their value as fuel to make biofuels or for their energy content.

Fumaroles

Openings in the Earths crust that emit steam and gases.

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- G -

Gasohol

Otherwise known as fuel ethanol, gasohol has been distilled and dehydrated to create a high-octane, water free alcohol. All water must be removed because a water-alcohol mixture cannot dissolve in gasoline. Fuel ethanol is made unfit for drinking by adding a small amount of a noxious substance such as gasoline.

Geothermal Gradient

The rate at which temperature increases deeper into the earth, towards the earth's molten core.

Geothermal Task Force

Geothermal Task Force Team is a government program that aims to: develop policies, in collaboration with affected agencies, related to tenure issuance, examine the regulation of the use of geothermal resources not currently covered by legislation, build a royalty and resource rent model for geothermal resources, and develop a science based review of the known geothermal resources in the province.

Geyser

Springs characterized by intermittent discharge of water ejected turbulently and accompanied by steam.

Giromill Turbine

Uses lift forces generated by vertical aerofoils to convert wind energy into rotational mechanical energy. They are powered by two or three vertical aerofoils attached to a central mast by horizontal supports.

Glut

A situation where the market has been flooded with goods and there is more supply than there is demand causing the price of goods to drop.

Gravity Survey

A technique of measuring minute changes in the Earths gravity field. This allows geologists to map lighter and denser rocks underground.

Green Energy and Green Economy Act of 2009

Legislation by the province of B.C. to boost the investment in renewable energy projects and increase conservation, create green jobs and economic growth in Ontario. Part of Ontario's plan to become a leading green economy in North America.

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- H -

Head

The term head refers to the change in elevation of the water.

Head Differential

The difference in pressure due to the difference in height of water level.

Heat Exchangers

These are used in High-Temperature and Low-Temperature applications to transfer heat from one medium to another. In Low-Temperature Geoexchange systems they are built into the heat pump.

Horizontal Axis Wind Turbine (HAWT)

Horizontal Axis Wind Turbine. These are the most common types of wind turbines and look like aircraft propellers mounted atop towers.

Hydrocarbons

A compound of almost entirely hydrogen and carbon. This covers oil and natural gas. Coal, the third fossil fuel, contains so many impurities it is usually disqualified from this title.

Hydrostatic Head

The distance a volume of water has to fall in order to generate power.


- I -

Intermittent Energy Source

Any source of energy that is not continuously available due to a factor that is outside of direct control (ex. Wind speed or sunshine).

Internal Combustion Engine

An internal combustion engine operates by burning its fuel inside the engine, rather than outside of it, as an external, or steam engine does. The most common internal combustion engine type is gasoline powered, followed by diesel, hydrogen, methane, and propane. Engines typically require adaptations (like adjusting the air/fuel ratio) to run on a different kind of fuel than they were designed for. Four-stroke internal combustion engines (each stroke marks a step in the combustion cycle) dominate the automotive and industrial realm today.

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- K -

Kinetic Energy

The ability of water falling from a dam to do work, that is, to generate electricity. Water stored above a dam has potential energy which turns to kinetic energy once it begins to fall.

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- L -

Levelized Cost of Electricity

The cost of generating electricity (capital, operation and maintenance costs). Measured in units of currency per unit of electricity (ex. kWh).

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- M -

Magnetic Survey

A technique for measuring the intensity of magnetic fields from several stations.

Manhattan Project

The massive Anglo-American-Canadian scientific undertaking which produced the atomic bombs that helped end the Second World War. It marked the birth of the nuclear age and scientists were immediately aware of the potential to use use nuclear power for civilian use.

Market Penetration

The share of the total energy market a specific energy source has in relation to its competitors. So the market penetration of wind power would be measured by its share of the electricity market, while ethanol would be compared to other vehicle fuels, not to total primary energy use.

Matrix

In geology, this is the finer mass of tiny sediments in which larger sediments are embedded.

Methanol

Methanol is produced naturally in the anaerobic metabolism of many types of bacteria, and is ubiquitous in the environment. Methanol is toxic in humans if ingested or contacted on the skin. For its toxic properties and close boiling point with ethanol, that it is used as a denaturant for ethanol.

Miscanthus

A low maintenance perennial grass which is thought to be twice as productive as switch grass as it has a longer growing season, greater leaf area, and higher carbon storage per unit of leaf area.

MMBtu

A unit of measurement which means a million Btus (British thermal units). A Btu is roughly the amount of energy it takes to heat a half kilogram of water from 3.8 to 4.4 °C. MBtu is used for a thousand Btus.

Moderator

A moderator is used to slow down neutrons, which enables them to react with the atoms in the nuclear fuel. If enough atoms react then the reactor can sustain a nuclear chain reaction.

Mount Saint Helen's

Mount St. Helens is an active volcano located in Washington state. It is most famous for its catastrophic eruption on May 18, 1980 where fifty-seven people were killed, 250 homes, 47 bridges, 24 km of railways, and 298 km of highway were destroyed.

Mud-Pools

Pools of bubbling mud. Also known as "paint-pots" when the slurry of usually grey mud is streaked with red or pink spots from iron compounds.

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- N -

Nacelle

The housing atop a wind turbine that holds the gearbox, generator, drive train and brakes, as well as the rotors.

Name-Plate Capacity

The intended full-load sustained output of a power plant. For example an average wind turbine's name-plate capacity is 2 Megawatts. The capacity factor is the actual output, so for that 2 MW wind turbine with an efficiency of around 30-35% (average) then it has a more realistic capacity of around 0.7 MW. Most power stations are listed in terms of their nameplate capacity.

National Energy Board

A regulatory agency established by the federal government in 1959 that is primarily tasked with regulating oil and gas pipelines that cross provincial and national borders.

National Energy Program

A set of policies enacted in 1980 that sought to make Canada energy independent. Petro-Canada was created and oil prices were kept artificially low to protect consumers. Shares of oil revenue were diverted to the federal government who used them mostly in the eastern provinces to offset a decline in manufacturing. The program was extremely unpopular in western Canada and was discontinued shortly thereafter.

Nuclear Renaissance

A term used by politicians and the media for the renewed interest in nuclear energy in the past decade. Many countries are now expanding their civilian nuclear programs.


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- O -

Octane

The octane rating of a fuel is indicated on the pump – using numbers such as 87, 90, 91 etc. The higher the number, the greater the octane rating of the gasoline.

Oil in Place

The total hydrocarbon (oil and gas) content of a reservoir. Sometimes called STOOIP or Stock Tank Original Oil In Place.

Oil Patch

A term for the Canadian oil industry. This specifically means the upstream operations that find and extract oil and gas, mostly in Alberta but also B.C., the other prairie provinces, Newfoundland and Labrador.

Oil Window

The range of temperature at which oil forms. Below a certain temperature and kerogen will never progress to the form of oil. Too high and natural gas is formed instead.

Organization for Economic Co-operation and Development (OECD)

The Organization for Economic Co-operation and Development is a 34 country organization dedicated to advocating democracy and the market economy. Membership is largely limited to Western Europe, North America, Australia and Japan, what are often considered the world's developed nations. Sometimes referred to in the media as the "rich countries' club".

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- P -

Passive Seismic Survey

A way to detect oil and gas by measuring the Earths natural low frequency movements.

Peak Power Demand

Power demand varies over minutes, hours, days and months. Peak power demand are the times when the most people are using the most power. To meet this demand extra sources of power must be switched on. Some forms of electricity generation, such as natural gas turbines, can be turned on quickly to meet peak power demand and are better suited for this purpose than others, such as nuclear, which are better as sources of baseload power.

Permeability

A measure of the ability of a porous rock to allow fluids to pass through it. High permeability in the surrounding rocks is needed for the formation of gas reserves.

Photovoltaic Cell

A non-mechanical device typically fabricated from silicon alloys that generates electricity from direct sunlight.

Pickens Plan

Investment of $1 trillion into wind power in the U.S.A., named for an American oil tycoon. The plan aims to reduce the amount of foreign oil imported to the U.S.A. while providing economic and environmental benefits.

Pondage

The main difference between small and large hydro projects is the existence of stored power in the form of water which is held back by dams at large hydro stations. Some small hydro projects have pondage, however, which are small ponds behind the weir of a dam which can store water for up to a week.

Potential Energy

The energy stored in a body or a system.

Porosity

Closely related to permeability, this is a measure of the amount of "voids," or empty space in a rock where gas or oil can pass through to collect in a reservoir.

Possible Reserves

Possible reserves are a class of unproven reserves that geologists use for oil that they are only 10% sure is present in the ground.

Purchasing Power Agreement

A contract between two parties, one who generates power for sale, and another who is looking to purchase it. B.C. Hydro buys power from companies that build their own power generating stations.

Primary Battery

A primary battery is one that is non-rechargable because the electrochemical reaction goes only one way. It gives out energy and cannot be reversed.

Primary Gas

The degeneration of decayed organic matter directly into gas through a process called "thermal cracking." This is opposed to secondary gas which is formed from decayed oil that has already formed.

Probable Reserves

Probable reserves are a class of unproven reserves that geologists use for oil or gas that they are at least 50% sure is actually present.

Proven Reserves

An amount of a resource any resource to be dug out of the ground (oil, coal, natural gas or uranium in energy terms) that geologists have a 90% or higher certainty can be extracted for a commercial gain with the technology available at the time."

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- R -

Recompleted

The process, by which an old oil well is redrilled, fractured, or has some other technology applied to improve the amount of oil recovered.

Reforming

In oil refining, reforming is using heat to break down, or crack, hydrocarbon atoms and increase their octane level. This technique creates some left-over hydrogen which can be collected and used.

Renewable Portfolio Standard (RPS)

Law that requires electric utilities to produce some portion of their power from renewable sources like wind, solar, geothermal or biomass. RPSs are necessary to keep renewables competitive in an era of cheap natural gas electricity.

Rent-Seeking

The practice of using resources to compete for existing wealth rather than to create new wealth, often to the detriment of those who seek to reform societies or institutions. Economies that fail to diversify away from oil are often pre-dominated by a rent-seeking mind-set where people become more pre-occupied with securing the windfall resouce profits for themselves, usually oil, rather than seeking to develop new industries.

Reserves

The fraction of the oil in place that can be considered extractable. This depends not only on the geology, but the economics (is oil expensive enough to make extracting it profitable?) and technology.

Reserve Growth

When an oil or gas field is first discovered, reserve estimates tend to be low. The estimates of the size of the field are expected to grow over time and this is called reserves growth.

Ring of Fire

The Pacific Ring of Fire is a region of high volcanic and seismic activity that surrounds the majority of the Pacific Ocean. This region is essentially a horseshoe of geologic activity, characterized by volcanoes, earthquakes, deep sea trenches, and major fault zones.

Riparian

The term riparian refers to the wetland area surrounding rivers or streams. A riparian ecosystem refers to the biological community supported by an area around a river.

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- S -

Savonius Turbine

Uses drag generated by the wind hitting the cup, like aerofoils, to create rotation.

Second Generation Wind Turbine

Technology that is only now beginning to enter the market as a result of research, development and demonstration. These are : solar, wind, tidal, advanced geothermal and modern bioenergy. Much hope has been placed upon these technologies but they still provide only a fraction of our energy.

Secondary Battery

Rechargable batteries are sometimes known as secondary batteries because their electro-chemical reactions can be reversed.

Secondary Gas

When oil is subjected to so much heat and pressure it degenerates into gas. The process through which this happens called "thermal cracking."

Secondary Recovery Schemes

When so much oil has been sucked out of an oil reservoir it will lose pressure and the oil will no longer flow out of the reservoir from natural pressure. When this happens secondary recovery schemes can be employed. This means that fluids or gases are pumped into the well to increase pressure and push the remaining oil up out of the well.

Shale

A type of sedimentary rock with low permeability, which was once thought to prevent any commercial extraction of the gas inside. Fracking allows gas developers to access it.

Sound Navigation and Ranging (SONAR)

Initially devised as a technique for detecting submarines. An emitter sends off pulses of sound. The pulses bounce off objects and return to a receiver which interprets their size and distance.

Spot Market

A market where commodities are traded for immediate delivery. A future market on the other hand is one where delivery is expected later on. Because of the dependence of gas users on those who are at the other end of the gas pipeline, the natural gas market is mostly a futures market.

Steam Coal

Steam coal is coal used for power generation in thermal power plants. This is typically coal that ranges in quality from sub-bituminous to bituminous.

Straight Vegetable Oil (SVO)

Vegetable oil fuel. Most diesel engine vehicles can run on it so long as the viscosity of the oil is lowered enough for complete combustion. Failure to do this can damage the engine. SVO is also known as pure plant oil or PPO.

Strategic Petroleum Reserve

An emergency store of oil maintained by some governments and corporations. The U.S. Department of Energy holds 727 million barrels of oil.

Subcritical Power Plant

A coal-fired power plant that operates at less than 550ËšC. Because the temperatures and pressures are than other plants, these plants operate at a low efficiency, around 33-35%. These plants are still the most common in the world and many are under construction

Supercritical Power Plant

Supercritical plants are coal powered power plants that can sustain temperatures of 550ËšC to 590ËšC and transfer up to 40% of the coals energy into power. This technology has only come into use in recent years. Most new coal-fired power plants built in the West are supercritical.

Switchgrass

One of the dominant native species of the North American prairies, tallgrass is being researched as a renewable bioenergy crop. It is a a native perennial warm season grass with the ability to produce moderate to high yields on marginal farmlands.

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- T -

Thermal Power Plant

A thermal power plant is any that is powered by a steam turbine. The steam is created by heating water which in turn spins the turbine. Most coal and gas power stations operate in this way, as do all nuclear plants. Coal powered and gas plants are often just called thermal plants.

Total Carbon Cost

The amount of carbon dioxide emitted during an action or a process. One exmaple is building a natural gas plant. The total carbon cost would include everything from the carbon emitted to get the materials to build the plant, to the carbon emitted in the building of the plant, and the carbon emitted during the operation of the plant.

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- U -

Unconventional Gas

Unconventional gas reserves come in many different geological formations, and include tight gas, shale gas, coalbed methane and methane hydrates. Extraction of these sources has only just begun and has hugely extended the lives of many gas fields and unlocking many new ones. The unlocking of unconventional gas reserves in the last five years has revolutionized the global energy system.

Ultracritical Power Plant

These are coal thermal power plants that operate above 590ËšC and can attain efficiencies above 40%. These plants are just coming into service.

Undiscovered Reserves

The amount of oil and gas estimated to exist in unexplored areas. Much of B.C. has not been thoroughly explored for fossil fuel potential and many of the estimates of B.C. fossil fuel resources rely on the concept of undiscovered resources

United States Geological Survey (USGS)

The United States Geological Survey. The department responsible for estimating American fossil fuel reserves. They also conduct many studies that span the globe.

Unproven Reserves

Oil reserves in the ground that petroleum geologists are less certain are there, but have strong reason to believe is present. Unproven reserves can be broken down into probable reserves and possible reserves. These numbers are used within oil companies but not usually published.

Upstream Operations

The portion of the oil business that involves finding oil and extracting it.

Uranium

Uranium is a heavy metal that is naturally radioactive. An isotope, U-235 can be enriched to support a nuclear chain reaction. Uranium is used in many nuclear power plants.

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- W -

W.A.C. Bennett Dam

A 2,730 MW dam built in north-eastern British Columbia along the Peace River during the 1960s.

Well

Any activity where humans bore down into the Earth to access reserves of oil or gas trapped in underground geological formations.

Wood Pellets

These are produced from wood residue (like sawdust) collected from sawmills and wood product manufacturers. Heat and pressure are used to transform wood residue into pellets without chemical additives, binders or glue. The pellets can be used in stoves and boilers.

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- Y -

Yucca Mountain

A remote mountain in Western Nevada where the U.S. Department of Energy has planned on storing all of the country's spent nuclear fuel underground since the 1990s. The proposal met stiff opposition from local residents and in 2009 the project was cancelled.

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