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TRL 9: Actual System Proven in Operational Environment

This dimension marks how mature a specific energy technology actually is, experimental, emerging or fully commercial. Wikipedia notes that "in some geographic localities, photovoltaic solar or onshore wind is the cheapest new-build electricity," a sign of just how mature those particular technologies have become. Browsing by maturity separates technologies still emerging from those already fully commercial.

Facts
Comparison
Domain Established Era
1750 1
TRL 9: Actual System Proven in Operational Environment
Filter Results374 entries

Absorption Chiller

TRL 9: Actual System Proven in Operational Environment

Absorption Heat Pump

TRL 9: Actual System Proven in Operational Environment

Absorption Refrigerator

TRL 9: Actual System Proven in Operational Environment

Absorption-Compression Heat Pump

TRL 9: Actual System Proven in Operational Environment

Activated Carbon Injection

TRL 9: Actual System Proven in Operational Environment

Adsorption

TRL 9: Actual System Proven in Operational Environment

Adsorption Chiller

TRL 9: Actual System Proven in Operational Environment

Advanced Boiling Water Reactor

TRL 9: Actual System Proven in Operational Environment

Advanced Gas-Cooled Reactor

TRL 9: Actual System Proven in Operational Environment

Aeroderivative Gas Turbine

TRL 9: Actual System Proven in Operational Environment

Air Compressor

TRL 9: Actual System Proven in Operational Environment

Air Conditioning

TRL 9: Actual System Proven in Operational Environment

Air Filter

TRL 9: Actual System Proven in Operational Environment

Air Preheater

TRL 9: Actual System Proven in Operational Environment

Air Purifier

TRL 9: Actual System Proven in Operational Environment

Air Separation

TRL 9: Actual System Proven in Operational Environment

Air Source Heat Pump

TRL 9: Actual System Proven in Operational Environment

Alkaline Battery

TRL 9: Actual System Proven in Operational Environment

Alkaline Fuel Cell

TRL 9: Actual System Proven in Operational Environment

Allam Cycle

TRL 9: Actual System Proven in Operational Environment

Alternator

TRL 9: Actual System Proven in Operational Environment

Amine Gas Treating

TRL 9: Actual System Proven in Operational Environment

Amorphous Silicon Solar Cell

TRL 9: Actual System Proven in Operational Environment

AP1000

TRL 9: Actual System Proven in Operational Environment

APR-1400

TRL 9: Actual System Proven in Operational Environment

Aqueous Homogeneous Reactor

TRL 9: Actual System Proven in Operational Environment

Arc-Fault Circuit Interrupter

TRL 9: Actual System Proven in Operational Environment

Atkinson Cycle

TRL 9: Actual System Proven in Operational Environment

Automatic Generation Control

TRL 9: Actual System Proven in Operational Environment

Automatic Meter Reading

TRL 9: Actual System Proven in Operational Environment

Automatic Transfer Switch

TRL 9: Actual System Proven in Operational Environment

Axial Flux Motor

TRL 9: Actual System Proven in Operational Environment

Baghouse

TRL 9: Actual System Proven in Operational Environment

Battery

TRL 9: Actual System Proven in Operational Environment

Battery Balancing

TRL 9: Actual System Proven in Operational Environment

Battery Charger

TRL 9: Actual System Proven in Operational Environment

Battery Energy Storage System

TRL 9: Actual System Proven in Operational Environment

Battery Management System

TRL 9: Actual System Proven in Operational Environment

Betavoltaic Device

TRL 9: Actual System Proven in Operational Environment

Binary Cycle Power Plant

TRL 9: Actual System Proven in Operational Environment

Biomass Gasification

TRL 9: Actual System Proven in Operational Environment

Boiler

TRL 9: Actual System Proven in Operational Environment

Boiler Draft

TRL 9: Actual System Proven in Operational Environment

Boiling Water Reactor

TRL 9: Actual System Proven in Operational Environment

Booster (electric power)

TRL 9: Actual System Proven in Operational Environment

Brayton Cycle

TRL 9: Actual System Proven in Operational Environment

Brushless DC Electric Motor

TRL 9: Actual System Proven in Operational Environment

Building-Integrated Photovoltaics

TRL 9: Actual System Proven in Operational Environment

Bulb Turbine

TRL 9: Actual System Proven in Operational Environment

Busbar

TRL 9: Actual System Proven in Operational Environment

Cable Fault Location

TRL 9: Actual System Proven in Operational Environment

Capacitor Bank

TRL 9: Actual System Proven in Operational Environment

Carbon Dioxide Scrubber

TRL 9: Actual System Proven in Operational Environment

Carbon Filtering

TRL 9: Actual System Proven in Operational Environment

Cascade Filling System

TRL 9: Actual System Proven in Operational Environment

Catalytic Converter

TRL 9: Actual System Proven in Operational Environment

Catalytic Reforming

TRL 9: Actual System Proven in Operational Environment

Charging Station

TRL 9: Actual System Proven in Operational Environment

Circuit Breaker

TRL 9: Actual System Proven in Operational Environment

Coal Gasification

TRL 9: Actual System Proven in Operational Environment

Cofiring

TRL 9: Actual System Proven in Operational Environment

Cogeneration

TRL 9: Actual System Proven in Operational Environment

Combined Cycle Gas Turbine

TRL 9: Actual System Proven in Operational Environment

Combined Heat and Power

TRL 9: Actual System Proven in Operational Environment

Combined-Cycle Power Plant

TRL 9: Actual System Proven in Operational Environment

Combustion

TRL 9: Actual System Proven in Operational Environment

Compound Steam Engine

TRL 9: Actual System Proven in Operational Environment

Compressed Air

TRL 9: Actual System Proven in Operational Environment

Compressor

TRL 9: Actual System Proven in Operational Environment

Condenser (Heat Transfer)

TRL 9: Actual System Proven in Operational Environment

Conductive Charging

TRL 9: Actual System Proven in Operational Environment

Continuous Emissions Monitoring System

TRL 9: Actual System Proven in Operational Environment

Cooling Tower

TRL 9: Actual System Proven in Operational Environment

Crankcase Ventilation System

TRL 9: Actual System Proven in Operational Environment

Current Transformer

TRL 9: Actual System Proven in Operational Environment

Cycloconverter

TRL 9: Actual System Proven in Operational Environment

Cyclone Furnace

TRL 9: Actual System Proven in Operational Environment

Cyclonic Separation

TRL 9: Actual System Proven in Operational Environment

Daniell Cell

TRL 9: Actual System Proven in Operational Environment

Darrieus Wind Turbine

TRL 9: Actual System Proven in Operational Environment

DC Motor

TRL 9: Actual System Proven in Operational Environment

Deaerator

TRL 9: Actual System Proven in Operational Environment

Dehumidifier

TRL 9: Actual System Proven in Operational Environment

Deriaz Turbine

TRL 9: Actual System Proven in Operational Environment

Diesel Cycle

TRL 9: Actual System Proven in Operational Environment

Diesel Engine

TRL 9: Actual System Proven in Operational Environment

Diesel Particulate Filter

TRL 9: Actual System Proven in Operational Environment

Direct Methanol Fuel Cell

TRL 9: Actual System Proven in Operational Environment

Distribution Management System

TRL 9: Actual System Proven in Operational Environment

District Cooling

TRL 9: Actual System Proven in Operational Environment

District Heating

TRL 9: Actual System Proven in Operational Environment

Doubly-Fed Induction Generator

TRL 9: Actual System Proven in Operational Environment

Downhole Heat Exchanger

TRL 9: Actual System Proven in Operational Environment

Draft Tube

TRL 9: Actual System Proven in Operational Environment

Dry Scrubber

TRL 9: Actual System Proven in Operational Environment

Dry Steam Power Plant

TRL 9: Actual System Proven in Operational Environment

Dry-Seal Wiggins Gasholder

TRL 9: Actual System Proven in Operational Environment

Dynamic Line Rating

TRL 9: Actual System Proven in Operational Environment

Dynamic Tidal Power

TRL 9: Actual System Proven in Operational Environment

Dynamo

TRL 9: Actual System Proven in Operational Environment

Economizer

TRL 9: Actual System Proven in Operational Environment

Electric Generator

TRL 9: Actual System Proven in Operational Environment

Electric Motor

TRL 9: Actual System Proven in Operational Environment

Electrical Disconnector

TRL 9: Actual System Proven in Operational Environment

Electrical Transformer

TRL 9: Actual System Proven in Operational Environment

Electrochemical Reduction of Carbon Dioxide

TRL 9: Actual System Proven in Operational Environment

Electrolysis of Water

TRL 9: Actual System Proven in Operational Environment

Electrolyzer

TRL 9: Actual System Proven in Operational Environment

Electrostatic Generator

TRL 9: Actual System Proven in Operational Environment

Electrostatic Motor

TRL 9: Actual System Proven in Operational Environment

Electrostatic Precipitator

TRL 9: Actual System Proven in Operational Environment

Energy Management System (Electrical Grid)

TRL 9: Actual System Proven in Operational Environment

Ericsson Cycle

TRL 9: Actual System Proven in Operational Environment

Evaporative Cooler

TRL 9: Actual System Proven in Operational Environment

Exhaust Gas Recirculation

TRL 9: Actual System Proven in Operational Environment

Explosimeter

TRL 9: Actual System Proven in Operational Environment

External Combustion Engine

TRL 9: Actual System Proven in Operational Environment

Fabric Filter

TRL 9: Actual System Proven in Operational Environment

Fault Current Limiter

TRL 9: Actual System Proven in Operational Environment

Feedwater Heater

TRL 9: Actual System Proven in Operational Environment

Fireplace Insert

TRL 9: Actual System Proven in Operational Environment

Flash Steam Power Plant

TRL 9: Actual System Proven in Operational Environment

Flexible AC Transmission System

TRL 9: Actual System Proven in Operational Environment

FLOX (Flameless Oxidation)

TRL 9: Actual System Proven in Operational Environment

Flue Gas

TRL 9: Actual System Proven in Operational Environment

Flue-Gas Desulfurization

TRL 9: Actual System Proven in Operational Environment

Fluidized Bed Combustion

TRL 9: Actual System Proven in Operational Environment

Four-Stroke Engine

TRL 9: Actual System Proven in Operational Environment

Francis Turbine

TRL 9: Actual System Proven in Operational Environment

Free-Piston Engine

TRL 9: Actual System Proven in Operational Environment

Fuel Cell Power Plant

TRL 9: Actual System Proven in Operational Environment

Furnace

TRL 9: Actual System Proven in Operational Environment

Fusor

TRL 9: Actual System Proven in Operational Environment

Gas Cylinder

TRL 9: Actual System Proven in Operational Environment

Gas Detector

TRL 9: Actual System Proven in Operational Environment

Gas Diffusion Electrode

TRL 9: Actual System Proven in Operational Environment

Gas Flare

TRL 9: Actual System Proven in Operational Environment

Gas Holder

TRL 9: Actual System Proven in Operational Environment

Gas Turbine

TRL 9: Actual System Proven in Operational Environment

Gas-Cooled Reactor

TRL 9: Actual System Proven in Operational Environment

Gasification

TRL 9: Actual System Proven in Operational Environment

Geothermal Desalination

TRL 9: Actual System Proven in Operational Environment

Geothermal Heat Pump

TRL 9: Actual System Proven in Operational Environment

Geothermal Heating

TRL 9: Actual System Proven in Operational Environment

Geothermal Power Plant

TRL 9: Actual System Proven in Operational Environment

Grate Firing

TRL 9: Actual System Proven in Operational Environment

Ground Source Heat Pump

TRL 9: Actual System Proven in Operational Environment

Grounding Transformer

TRL 9: Actual System Proven in Operational Environment

Heat Engine

TRL 9: Actual System Proven in Operational Environment

Heat Exchanger

TRL 9: Actual System Proven in Operational Environment

Heat Pipe

TRL 9: Actual System Proven in Operational Environment

Heat Pump

TRL 9: Actual System Proven in Operational Environment

Heat Recovery Steam Generator

TRL 9: Actual System Proven in Operational Environment

Heat Recovery Ventilation

TRL 9: Actual System Proven in Operational Environment

Heterojunction Solar Cell

TRL 9: Actual System Proven in Operational Environment

High-Voltage Direct Current

TRL 9: Actual System Proven in Operational Environment

Homogeneous Charge Compression Ignition

TRL 9: Actual System Proven in Operational Environment

Homopolar Generator

TRL 9: Actual System Proven in Operational Environment

Horizontal-Axis Wind Turbine

TRL 9: Actual System Proven in Operational Environment

HVDC Converter Station

TRL 9: Actual System Proven in Operational Environment

Hybrid Solar Lighting

TRL 9: Actual System Proven in Operational Environment

Hydraulic Accumulator

TRL 9: Actual System Proven in Operational Environment

Hydroelectricity

TRL 9: Actual System Proven in Operational Environment

Hydrogen Clathrate

TRL 9: Actual System Proven in Operational Environment

Hydrogen Evolution Reaction

TRL 9: Actual System Proven in Operational Environment

Ice Storage Air Conditioning

TRL 9: Actual System Proven in Operational Environment

Independent Water and Power Plant

TRL 9: Actual System Proven in Operational Environment

Indicator Diagram

TRL 9: Actual System Proven in Operational Environment

Induction Generator

TRL 9: Actual System Proven in Operational Environment

Induction Motor

TRL 9: Actual System Proven in Operational Environment

Induction Regulator

TRL 9: Actual System Proven in Operational Environment

Integrated Gasification Combined Cycle

TRL 9: Actual System Proven in Operational Environment

Internal Combustion Engine

TRL 9: Actual System Proven in Operational Environment

Isolation Condenser

TRL 9: Actual System Proven in Operational Environment

Jet Engine

TRL 9: Actual System Proven in Operational Environment

Jonval Turbine

TRL 9: Actual System Proven in Operational Environment

Kalina Cycle

TRL 9: Actual System Proven in Operational Environment

Kaplan Turbine

TRL 9: Actual System Proven in Operational Environment

Kinetic Energy Recovery System

TRL 9: Actual System Proven in Operational Environment

Lead-Acid Battery

TRL 9: Actual System Proven in Operational Environment

Linear Alternator

TRL 9: Actual System Proven in Operational Environment

Linear Motor

TRL 9: Actual System Proven in Operational Environment

Liquid Air

TRL 9: Actual System Proven in Operational Environment

Lithium Iron Phosphate Battery

TRL 9: Actual System Proven in Operational Environment

Lithium-Ion Battery

TRL 9: Actual System Proven in Operational Environment

Lithium-Sulfur Battery

TRL 9: Actual System Proven in Operational Environment

Ljungstrom Turbine

TRL 9: Actual System Proven in Operational Environment

Low-NOx Burner

TRL 9: Actual System Proven in Operational Environment

Magnetic Mirror

TRL 9: Actual System Proven in Operational Environment

Magnetic Refrigeration

TRL 9: Actual System Proven in Operational Environment

Magnetohydrodynamic Generator

TRL 9: Actual System Proven in Operational Environment

Maximum Power Point Tracking

TRL 9: Actual System Proven in Operational Environment

Membrane Electrode Assembly

TRL 9: Actual System Proven in Operational Environment

Membrane Reactor

TRL 9: Actual System Proven in Operational Environment

Metal-Air Electrochemical Cell

TRL 9: Actual System Proven in Operational Environment

Micro Combined Heat and Power

TRL 9: Actual System Proven in Operational Environment

Micro Power Source

TRL 9: Actual System Proven in Operational Environment

Miller Cycle

TRL 9: Actual System Proven in Operational Environment

Molten Carbonate Fuel Cell

TRL 9: Actual System Proven in Operational Environment

Monocrystalline Silicon Solar Cell

TRL 9: Actual System Proven in Operational Environment

Motor-Generator

TRL 9: Actual System Proven in Operational Environment

Multifuel

TRL 9: Actual System Proven in Operational Environment

Network Protector

TRL 9: Actual System Proven in Operational Environment

Newcomen Atmospheric Engine

TRL 9: Actual System Proven in Operational Environment

Nickel-Cadmium Battery

TRL 9: Actual System Proven in Operational Environment

Nickel-Hydrogen Battery

TRL 9: Actual System Proven in Operational Environment

Nickel-Metal Hydride Battery

TRL 9: Actual System Proven in Operational Environment

Nuclear Reactor

TRL 9: Actual System Proven in Operational Environment

Offshore Wind Turbine

TRL 9: Actual System Proven in Operational Environment

Oil Burner (Engine)

TRL 9: Actual System Proven in Operational Environment

Organic Rankine Cycle

TRL 9: Actual System Proven in Operational Environment

Oscillating Water Column

TRL 9: Actual System Proven in Operational Environment

Otto Cycle

TRL 9: Actual System Proven in Operational Environment

Outage Management System

TRL 9: Actual System Proven in Operational Environment

Parabolic Trough

TRL 9: Actual System Proven in Operational Environment

Partial Oxidation

TRL 9: Actual System Proven in Operational Environment

Passive Nuclear Safety

TRL 9: Actual System Proven in Operational Environment

Pelton Turbine

TRL 9: Actual System Proven in Operational Environment

Penstock

TRL 9: Actual System Proven in Operational Environment

PERC Solar Cell

TRL 9: Actual System Proven in Operational Environment

Permanent Magnet Synchronous Generator

TRL 9: Actual System Proven in Operational Environment

Perovskite Solar Cell

TRL 9: Actual System Proven in Operational Environment

Phase-Change Material

TRL 9: Actual System Proven in Operational Environment

Phasor Measurement Unit

TRL 9: Actual System Proven in Operational Environment

Phosphoric Acid Fuel Cell

TRL 9: Actual System Proven in Operational Environment

Photoelectric Effect

TRL 9: Actual System Proven in Operational Environment

Photovoltaic Cell

TRL 9: Actual System Proven in Operational Environment

Photovoltaic Effect

TRL 9: Actual System Proven in Operational Environment

Photovoltaic System

TRL 9: Actual System Proven in Operational Environment

Photovoltaic Thermal Hybrid Solar Collector

TRL 9: Actual System Proven in Operational Environment

Photovoltaics

TRL 9: Actual System Proven in Operational Environment

Polycrystalline Silicon Solar Cell

TRL 9: Actual System Proven in Operational Environment

Post Mill

TRL 9: Actual System Proven in Operational Environment

Power Inverter

TRL 9: Actual System Proven in Operational Environment

Power Transformer

TRL 9: Actual System Proven in Operational Environment

Power-Line Communication

TRL 9: Actual System Proven in Operational Environment

Pressurized Water Reactor

TRL 9: Actual System Proven in Operational Environment

Protective Relay

TRL 9: Actual System Proven in Operational Environment

Proton Exchange Membrane Fuel Cell

TRL 9: Actual System Proven in Operational Environment

Pulse Detonation Engine

TRL 9: Actual System Proven in Operational Environment

Pulverized Coal-Fired Boiler

TRL 9: Actual System Proven in Operational Environment

Pumped Storage Hydropower

TRL 9: Actual System Proven in Operational Environment

Pyrometer

TRL 9: Actual System Proven in Operational Environment

Quadrature Booster

TRL 9: Actual System Proven in Operational Environment

Radioisotope Thermoelectric Generator

TRL 9: Actual System Proven in Operational Environment

Rankine Cycle

TRL 9: Actual System Proven in Operational Environment

Reciprocating Engine

TRL 9: Actual System Proven in Operational Environment

Recloser

TRL 9: Actual System Proven in Operational Environment

Recuperator

TRL 9: Actual System Proven in Operational Environment

Redox Flow Battery

TRL 9: Actual System Proven in Operational Environment

Regenerative Heat Exchanger

TRL 9: Actual System Proven in Operational Environment

Regenerative Thermal Oxidizer

TRL 9: Actual System Proven in Operational Environment

Reluctance Motor

TRL 9: Actual System Proven in Operational Environment

Repulsion Motor

TRL 9: Actual System Proven in Operational Environment

Residual-Current Device

TRL 9: Actual System Proven in Operational Environment

Ring Main Unit

TRL 9: Actual System Proven in Operational Environment

Rotary Converter

TRL 9: Actual System Proven in Operational Environment

Rotating Detonation Engine

TRL 9: Actual System Proven in Operational Environment

Savonius Wind Turbine

TRL 9: Actual System Proven in Operational Environment

SCADA

TRL 9: Actual System Proven in Operational Environment

Sectionalizer

TRL 9: Actual System Proven in Operational Environment

Selective Catalytic Reduction

TRL 9: Actual System Proven in Operational Environment

Selective Non-Catalytic Reduction

TRL 9: Actual System Proven in Operational Environment

Servomotor

TRL 9: Actual System Proven in Operational Environment

Shaded-Pole Motor

TRL 9: Actual System Proven in Operational Environment

Shunt Reactor

TRL 9: Actual System Proven in Operational Environment

Silver-Oxide Battery

TRL 9: Actual System Proven in Operational Environment

Six-Stroke Engine

TRL 9: Actual System Proven in Operational Environment

Small Wind Turbine

TRL 9: Actual System Proven in Operational Environment

Smart Meter

TRL 9: Actual System Proven in Operational Environment

Smock Mill

TRL 9: Actual System Proven in Operational Environment

Sodium-Sulfur Battery

TRL 9: Actual System Proven in Operational Environment

Solar Air Conditioning

TRL 9: Actual System Proven in Operational Environment

Solar Cell

TRL 9: Actual System Proven in Operational Environment

Solar Cell Fabric

TRL 9: Actual System Proven in Operational Environment

Solar Chimney

TRL 9: Actual System Proven in Operational Environment

Solar Cooker

TRL 9: Actual System Proven in Operational Environment

Solar Energy

TRL 9: Actual System Proven in Operational Environment

Solar Inverter

TRL 9: Actual System Proven in Operational Environment

Solar Panel

TRL 9: Actual System Proven in Operational Environment

Solar Pond

TRL 9: Actual System Proven in Operational Environment

Solar Still

TRL 9: Actual System Proven in Operational Environment

Solar Thermal Collector

TRL 9: Actual System Proven in Operational Environment

Solar Thermal Energy

TRL 9: Actual System Proven in Operational Environment

Solar Tracker

TRL 9: Actual System Proven in Operational Environment

Solar Water Heater

TRL 9: Actual System Proven in Operational Environment

Solar Water Heating

TRL 9: Actual System Proven in Operational Environment

Solar-Assisted Heat Pump

TRL 9: Actual System Proven in Operational Environment

Solar-Powered Pump

TRL 9: Actual System Proven in Operational Environment

Sorption Enhanced Water Gas Shift

TRL 9: Actual System Proven in Operational Environment

Split-Cycle Engine

TRL 9: Actual System Proven in Operational Environment

Staged Combustion Cycle

TRL 9: Actual System Proven in Operational Environment

Staged Reforming

TRL 9: Actual System Proven in Operational Environment

Static Synchronous Compensator

TRL 9: Actual System Proven in Operational Environment

Static Synchronous Series Compensator

TRL 9: Actual System Proven in Operational Environment

Static VAR Compensator

TRL 9: Actual System Proven in Operational Environment

Steam Accumulator

TRL 9: Actual System Proven in Operational Environment

Steam Engine

TRL 9: Actual System Proven in Operational Environment

Steam Methane Reforming

TRL 9: Actual System Proven in Operational Environment

Steam Turbine

TRL 9: Actual System Proven in Operational Environment

Steam-Electric Power Station

TRL 9: Actual System Proven in Operational Environment

Stepper Motor

TRL 9: Actual System Proven in Operational Environment

Stirling Engine

TRL 9: Actual System Proven in Operational Environment

Straflo Turbine

TRL 9: Actual System Proven in Operational Environment

Supercritical Steam Generator

TRL 9: Actual System Proven in Operational Environment

Superheater

TRL 9: Actual System Proven in Operational Environment

Superhot Rock Geothermal Energy

TRL 9: Actual System Proven in Operational Environment

Surface Condenser

TRL 9: Actual System Proven in Operational Environment

Surge Arrester

TRL 9: Actual System Proven in Operational Environment

Switched Reluctance Motor

TRL 9: Actual System Proven in Operational Environment

Switchgear

TRL 9: Actual System Proven in Operational Environment

Synchronous Condenser

TRL 9: Actual System Proven in Operational Environment

Synchronous Motor

TRL 9: Actual System Proven in Operational Environment

Tap Changer

TRL 9: Actual System Proven in Operational Environment

Thermal Energy Network

TRL 9: Actual System Proven in Operational Environment

Thermal Power Station

TRL 9: Actual System Proven in Operational Environment

Thermal Wheel

TRL 9: Actual System Proven in Operational Environment

Thermionic Emission

TRL 9: Actual System Proven in Operational Environment

Thermochemical Cycle

TRL 9: Actual System Proven in Operational Environment

Thermochemical Energy Storage

TRL 9: Actual System Proven in Operational Environment

Thermoelectric Effect

TRL 9: Actual System Proven in Operational Environment

Thermoelectric Generator

TRL 9: Actual System Proven in Operational Environment

Thermoelectric Heat Pump

TRL 9: Actual System Proven in Operational Environment

Thermoelectric Materials

TRL 9: Actual System Proven in Operational Environment

Thermosiphon

TRL 9: Actual System Proven in Operational Environment

Thin-Film Solar Cell

TRL 9: Actual System Proven in Operational Environment

Thyristor-Controlled Series Capacitor

TRL 9: Actual System Proven in Operational Environment

Tidal Lagoon

TRL 9: Actual System Proven in Operational Environment

Tidal Power

TRL 9: Actual System Proven in Operational Environment

Tide Mill

TRL 9: Actual System Proven in Operational Environment

Tokamak

TRL 9: Actual System Proven in Operational Environment

Torque Motor

TRL 9: Actual System Proven in Operational Environment

Tower Mill

TRL 9: Actual System Proven in Operational Environment

Transcritical Cycle

TRL 9: Actual System Proven in Operational Environment

Trigeneration

TRL 9: Actual System Proven in Operational Environment

Trombe Wall

TRL 9: Actual System Proven in Operational Environment

Trompe

TRL 9: Actual System Proven in Operational Environment

Turgo Turbine

TRL 9: Actual System Proven in Operational Environment

Two-Photon Photovoltaic Effect

TRL 9: Actual System Proven in Operational Environment

Two-Stroke Engine

TRL 9: Actual System Proven in Operational Environment

Underfloor Heating

TRL 9: Actual System Proven in Operational Environment

Undershot Water Wheel

TRL 9: Actual System Proven in Operational Environment

Unified Power Flow Controller

TRL 9: Actual System Proven in Operational Environment

Uniflow Steam Engine

TRL 9: Actual System Proven in Operational Environment

Universal Motor

TRL 9: Actual System Proven in Operational Environment

Vacuum Interrupter

TRL 9: Actual System Proven in Operational Environment

Vaneless Ion Wind Generator

TRL 9: Actual System Proven in Operational Environment

Vapor Recovery Unit

TRL 9: Actual System Proven in Operational Environment

Vapor-Compression Refrigeration

TRL 9: Actual System Proven in Operational Environment

Variable Refrigerant Flow

TRL 9: Actual System Proven in Operational Environment

Variable-Speed Wind Turbine

TRL 9: Actual System Proven in Operational Environment

Venturi Scrubber

TRL 9: Actual System Proven in Operational Environment

Vertical-Axis Wind Turbine

TRL 9: Actual System Proven in Operational Environment

Voltage Regulator

TRL 9: Actual System Proven in Operational Environment

Voltage Transformer

TRL 9: Actual System Proven in Operational Environment

Voltaic Pile

TRL 9: Actual System Proven in Operational Environment

Wankel Engine

TRL 9: Actual System Proven in Operational Environment

Water Wheel

TRL 9: Actual System Proven in Operational Environment

Watt Steam Engine

TRL 9: Actual System Proven in Operational Environment

Wave Farm

TRL 9: Actual System Proven in Operational Environment

Wet Scrubber

TRL 9: Actual System Proven in Operational Environment

Wind Farm

TRL 9: Actual System Proven in Operational Environment

Wind Lens

TRL 9: Actual System Proven in Operational Environment

Wind Pump

TRL 9: Actual System Proven in Operational Environment

Wind Turbine

TRL 9: Actual System Proven in Operational Environment

Wind Turbine Blade

TRL 9: Actual System Proven in Operational Environment

Wind Turbine Nacelle

TRL 9: Actual System Proven in Operational Environment

Windbelt

TRL 9: Actual System Proven in Operational Environment

Windmill

TRL 9: Actual System Proven in Operational Environment

Wound-Rotor Motor

TRL 9: Actual System Proven in Operational Environment

Yaw System

TRL 9: Actual System Proven in Operational Environment

ZEBRA Battery

TRL 9: Actual System Proven in Operational Environment

Zinc-Air Battery

TRL 9: Actual System Proven in Operational Environment

Zinc-Carbon Battery

TRL 9: Actual System Proven in Operational Environment
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Sources
1. Energy development - Wikipedia
Energy development, Fossil Fuels section, Industrial Revolution sentence
Quote, Energy development, Fossil Fuels section, Industrial Revolution sentence
The use of fossil fuels in the 18th and 19th centuries set the stage for the Industrial Revolution.
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Encyclopedia Britannica
Encyclopedia Britannica, Inc.View the Source
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