Glossary of terms

THIS glossary of terms IS specific to the Ten-Terawatt Initiative and related energy industry concepts. Terms are provided to help readers understand the technical and industry-specific language used in our communications.

A
Advanced Nuclear Reactor: A new generation of nuclear fission reactors incorporating innovative technologies and approaches to improve safety, efficiency, cost, and deployability compared to traditional nuclear plants.

B
Balance of Plant: All supporting components and auxiliary systems of a power plant needed to deliver the energy, other than the core generating unit itself.
Brownfield Site: A previously developed site that has existing infrastructure, often referring to current or former industrial locations like coal power plants.

C
Capacity Factor: The ratio of actual power generated compared to the maximum possible generation over a period of time, typically expressed as a percentage.
CAGR (Compound Annual Growth Rate): The mean annual growth rate over a specified time period longer than one year.

D
DfMA (Design for Manufacturing and Assembly): An engineering methodology that focuses on ease of manufacturing and efficiency of assembly.

E
Energy Density: The amount of energy that can be stored or generated per unit of volume or mass.

F
Firm Power: Electrical power guaranteed to be available at a specified level during a specified period.

G
Gigafactory: A very large manufacturing facility producing products at gigawatt-scale capacity.
Greenfield Site: A previously undeveloped site with no existing infrastructure.

H
Heat Box: Term used in the TTI strategy for a standardized, mass-manufactured advanced nuclear reactor unit.

I
IRR (Internal Rate of Return): A metric used to estimate the profitability of potential investments.

K
Kit-of-Parts: A standardized set of pre-engineered components designed to be assembled in various configurations to meet different requirements.

M
MWe (Megawatt Electric): Unit of electric power generation capacity, equal to one million watts.

O  
OECD (Organisation for Economic Co-operation and Development): An intergovernmental organization of 38 member countries, generally representing developed economies.
Offtake Agreement: A contract between a power producer and a customer to purchase a certain amount of energy for a predetermined period.
Overnight Capital Cost: The cost of a construction project if it could be built instantly, excluding interest during construction.

P
Product-Based Licensing: An approach to regulatory approval where a standardized design is licensed once and can be deployed multiple times with minimal additional review.

R
REPOWER: Terra Praxis' strategy for repurposing existing power plant infrastructure with clean energy solutions.

S
Scope 1 Emissions: Direct greenhouse gas emissions from sources owned or controlled by an organization.
Scope 2 Emissions: Indirect greenhouse gas emissions from purchased electricity, steam, heating, and cooling.
Seismic Isolation: A construction technique that protects buildings from earthquake damage by decoupling the structure from ground motion.

T
Terawatt (TW): Unit of power equal to one trillion watts.
TWe (Terawatt Electric): Specific measure of electric power generation capacity at the terawatt scale.
Thermal Storage: Systems that store energy in the form of heat for later use.

U
Universal Heat Transfer Interface: A standardized connection system in the TTI strategy that allows different heat sources to connect with power conversion systems.