Energy Efficiency and Conservation
Level 1: Beginner
Let's go!
Module 1 - Introduction
Energy is essential to our daily lives, from lighting our homes to heating and running appliances. However, understanding how energy is used, lost, and saved is key to making smarter, cost-effective, and environmentally friendly choices. This Level 1 course introduces fundamental concepts of energy efficiency and conservation, providing a solid foundation for anyone looking to become more energy-aware. At this introductory level, you will learn how energy flows, how buildings retain or lose heat, and how simple changes in habits and technology can make a big difference. By recognizing where energy is wasted and how to optimize its use, you can start making informed decisions that reduce energy bills and environmental impact.
Start Course
Energy Efficiency and Conservation Level 1: Beginner
Objectives
Modules
Exercises
Evaluation
Modules
Module 3: Thermodynamics in Everyday Life
Module 1: Introduction to the Objectives
Module 2: What Do Energy Efficiency and Conservation Mean?
Module 4: Energy Loss Mechanisms in Buildings
Module 5: The Role of Materials & Design in Energy Efficiency
Module 6: Conclusion
Module 1 - Introduction
Objectives
By the end of this E-lit Adults educational course level, you will be able to: • Explain the basic principles of energy efficiency and conservation. • Recognize how heat moves and how insulation and materials affect energy use. • Identify common causes of energy waste in buildings. • Apply simple, low-cost strategies to reduce energy consumption in everyday life. • Develop a basic awareness of how personal habits impact energy use and costs.
Module 2 - What Do Energy Efficiency and Conservation Mean?
What is Energy Efficiency?
Energy efficiency means using less energy to do the same tasks. It’s not just for homes—it also applies to offices, schools, and many other buildings. New technologies have made appliances, electronics, and machines more energy-efficient. For example, switching from old light bulbs to LED lights saves electricity because LEDs use less energy, produce less heat, and last longer.
Module 2 - What Do Energy Efficiency and Conservation Mean?
What is Energy Conservation?
Energy conservation means using less energy by changing how we use it. It’s about reducing unnecessary energy use to save resources and cut costs. A simple example is drying your clothes naturally on a clothesline instead of using an electric dryer. This choice not only saves electricity but also extends the life of your clothes. Therefore, energy efficiency and conservation ultimately lead to using less energy to perform daily tasks and functions.
Module 2 - What Do Energy Efficiency and Conservation Mean?
Differences between energy efficiency and energy conservation (1)
Module 2 - What Do Energy Efficiency and Conservation Mean?
Differences between energy efficiency and energy conservation (2)
Module 2 - What Do Energy Efficiency and Conservation Mean?
Action Plan on How to Start Conserving Energy at Home
Implement your plan and be consistent with the actions, then monitor for savings
Identify how you use energy
Understand how the energy is consumed by that appliance
Choose one appliance to focus on
Set goals on how you will use less energy and be more efficient while using it
Module 3 - Thermodynamics in Everyday Life
Thermodynamics is the study of how heat and energy move in different systems. Heat always flows from warmer to cooler places until the temperatures balance out.
Understanding how heat moves can help us:
- Keep our homes warm in winter and cool in summer
- Use energy more efficiently and reduce energy waste
- Save money on heating and cooling costs
By learning how heat transfer works, we can make smarter choices about insulation, home design, and energy use to stay comfortable while reducing our environmental impact.
Module 3 - Thermodynamics in Everyday Life
Conduction is when heat moves through solid objects. What happens? Heat travels through materials that are touching. Example: A metal spoon in a hot cup of tea gets warm because heat travels from the liquid to the spoon. In the home:
- Heat escapes through walls, windows, and doors if they are not well insulated.
- Good conductors (like metal) transfer heat quickly, while insulators (like wood or wool) slow heat transfer.
Covection (hot air)
Radiation
Convection
Conduction
Module 3 - Thermodynamics in Everyday Life
Convection is when heat moves through air or liquid. What happens? Warm air or liquid rises, and cooler air or liquid sinks, creating movement. Example: In a room with a heater, warm air rises to the ceiling while cool air stays near the floor. In the home:
- A drafty room loses heat because cold air enters and pushes warm air out.
- Curtains, rugs, and door seals help keep warm air inside during winter.
Covection (hot air)
Radiation
Convection
Conduction
Module 3 - Thermodynamics in Everyday Life
Radiation is when heat moves in invisible waves What happens? Warm air or liquid rises, and cooler air or liquid sinks, creating movement. Example: In a room with a heater, warm air rises to the ceiling while cool air stays near the floor. In the home:
- A drafty room loses heat because cold air enters and pushes warm air out.
- Curtains, rugs, and door seals help keep warm air inside during winter.
Covection (hot air)
Radiation
Covection
Conduction
Module 4 - Energy Loss Mechanisms in Buildings
In winter, heat escapes through walls, roofs, floors, windows, and doors. The more heat that escapes, the harder heating systems must work, leading to higher energy bills. In summer, the opposite happens—cool indoor air escapes, and hot outdoor air enters, making air conditioners work harder. Reducing energy loss is essential for lower energy costs, increased comfort, and a more sustainable environment.
What is Energy Loss?
Every building loses energy, mainly in the form of heat. This loss increases heating and cooling costs, making homes and offices less efficient. Heat moves naturally from warmer areas to colder areas until temperatures equalize. Without proper insulation and sealing, buildings constantly lose heat in winter and gain unwanted heat in summer.
Module 4 - Energy Loss Mechanisms in Buildings
This includes:
- Leaving lights, appliances, or electronics on when not in use
- Overheating or overcooling spaces
- Using outdated or inefficient equipment
- Running heating or cooling systems with open windows or doors
Energy Waste in Buildings
Energy waste is slightly different from energy loss. While energy loss refers to unintentional escape of heat (like through poorly insulated walls or windows), energy waste happens when energy is used inefficiently or unnecessarily.
Energy loss = passive, often unavoidable without proper insulation (focuses on heat). Energy waste = active misuse or inefficiency (could be electricity, fuel, heat, etc.).
Module 4 - Energy Loss Mechanisms in Buildings
3. Air Leaks and Ventilation
1. Windows and Doors
Poorly sealed or single-pane windows allow significant heat exchange. Small gaps around doors let warm air escape in winter and hot air enter in summer.
Cracks in walls, floors, and ceilings let warm air escape and cold air enter. Ventilation systems without heat recovery expel warm indoor air, wasting energy.
4. Floors and Basements
2. Walls and Roofs
Insufficient insulation lets heat pass through easily. Well-insulated walls and roofs slow down heat movement, reducing energy waste.
Uninsulated floors lose heat to the ground, making indoor spaces colder. Basements without insulation allow heat to escape into the soil.
Module 4 - Energy Loss Mechanisms in Buildings
The Impact of Heat Loss
Cold drafts and uneven room temperatures reduce comfort. In winter, some rooms may feel too cold, while others are too warm. In summer, air-conditioning struggles to maintain stable temperatures, increasing cooling costs.
Energy loss affects both finances and comfort. Buildings with poor insulation and air leaks are expensive to heat and cool. Heating systems must work harder, leading to higher utility bills and greater carbon emissions.
around 40%
of energy consumed in the EU is used in buildings
over 1/3
of the EU's energy-related GHG emissions come from buildings
+/- 80%
of energy used in EU homes is for heating, cooling and hot water
Module 5: The Role of Materials & Design in Energy Efficiency
An energy-efficient home uses materials and design features that reduce heat loss in winter and heat gain in summer. This leads to lower energy consumption, reduced bills, and a more comfortable indoor environment.
Buildings are constantly exchanging heat with their surroundings. Some materials trap heat efficiently, while others allow it to escape. The design of a building—including window placement, shading, and insulation—determines how much energy is needed for heating and cooling.
Module 5 - IntroductionThe Role of Materials & Design in Energy Efficiency
The Role of Materials in Energy Efficiency
- Single-pane windows lose heat easily.
- Double- and triple-glazed windows trap heat inside, reducing energy waste.
Windows and Glass
- Concrete walls absorb heat and release it slowly, helping regulate temperature.
- Insulated walls block heat movement, keeping homes warmer in winter and cooler in summer.
Walls and Insulation
- Concrete walls absorb heat and release it slowly, helping regulate temperature.
- Insulated walls block heat movement, keeping homes warmer in winter and cooler in summer.
Roofing Materials
- Wooden floors provide better insulation than concrete.
- Insulated foundations prevent heat from escaping into the ground.
Flooring and Foundations
Module 5: The Role of Materials & Design in Energy Efficiency
How Building Design Affects Energy Use
A building’s shape, orientation, and window placement determine how much energy it needs. Well-designed homes take advantage of natural light, wind flow, and shading to maintain comfort without relying on excessive heating or cooling.
Window Placement & Orientation
- South-facing windows (Northern Hemisphere) maximize solar heating in winter.
- Overhangs, trees, and blinds reduce heat gain in summer, preventing overheating.
Building Shape & Layout
- Compact buildings lose less heat than large, spread-out homes.
- Strategic wall placement improves airflow and natural cooling.
- Cross-ventilation (placing windows on opposite sides) allows natural cooling.
- Heat recovery ventilation systems maintain fresh air while saving energy.
Ventilation & Airflow
Module 5 - IntroductionThe Role of Materials & Design in Energy Efficiency
When renting or buying a home, it's important to consider its energy efficiency to save on utility costs and improve comfort. Ask these key questions to find out if the property is well-insulated and energy-efficient.
WINDOWS AND GLASS
- What type of insulation is installed, and is it in good condition? Common types include fiberglass, cellulose, and spray foam. Proper insulation helps maintain indoor temperatures.
- Are there any cracks or gaps where air might escape? Look for gaps around windows, doors, and wall joints. Sealing these can prevent heat loss.
- Is the insulation material eco-friendly and effective? Options like cellulose (recycled paper) or mineral wool are both sustainable and energy-efficient.
Module 5 - IntroductionThe Role of Materials & Design in Energy Efficiency
ROOFING MATERIALS
- What kind of roofing material is used, and is it energy-efficient? Metal roofs, concrete tiles, and cool roofs reflect heat and improve energy efficiency.
- Is there proper insulation in the roof space? Insulated roofing prevents heat from escaping during winter and reduces heat absorption in summer.
- Are there any visible leaks or damage? Leaks allow cold air in and warm air out, increasing energy costs.
Module 5 - IntroductionThe Role of Materials & Design in Energy Efficiency
FLOORING AND FOUNDATIONS
- Is there any underfloor insulation? Underfloor insulation prevents heat from escaping into the ground, keeping rooms warmer.
- Are there drafts coming from under doors or edges? Check for cold air coming through gaps—draft stoppers and sealants can fix this.
- Is the foundation insulated to prevent heat loss? Insulated foundations help stabilize indoor temperatures and reduce energy use.
Module 6 - Conclusion
Conclusion
This level has introduced you to the fundamentals of energy efficiency and conservation, helping you understand how energy is used, lost, and saved. You’ve learned the difference between efficiency and conservation, how heat transfer (conduction, convection, radiation) affects buildings, and how simple actions like using LED lighting, insulation, and better habits can reduce energy waste and lower costs. These insights will help you recognize and minimize energy loss, enabling smarter choices at home and beyond.
With this knowledge, you can now apply basic energy-saving strategies in daily life. Whether it’s sealing air leaks, optimizing heating and cooling, or adopting mindful habits, small steps lead to significant savings and sustainability. By integrating these practices, you reduce costs, cut waste, and improve efficiency. This is just the beginning of your energy literacy journey, with future levels exploring advanced strategies and technologies.
Exercise 1
Click only on the correct concepts
ENERGY CONSERVATION
ENERGY EFFICIENCY
Turning off lights when not in use
Leaving appliances on standby mode
LED lighting
Unplugging unused electronics
Smart thermostats
Playing video games
Using a fan instead of air conditioning
Single-pane windows
Check
Check
Evaluation
Evaluation Quiz
1. This quiz consists of 7 multiple-choice questions related to energy sources, environmental impact, and energy transition.
2. Choose the correct answer for each question (only one per question).
3. The quiz helps reinforce key concepts covered in the course.
Evaluation 1/7
Evaluation 2/7
Evaluation 3/7
Evaluation 4/7
Evaluation 5/7
Evaluation 6/7
Evaluation 7/7
Certificate
Congratulations!
Certificate of Completion
To receive an Open Badge for this course, please contact the local project partner: Kaunas University of Technology.
Sources
1. European Commission. (2024). Energy Performance of Buildings Directive. Retrieved from https://energy.ec.europa.eu 2. Passive House School. (n.d.). The key to energy efficiency: Balancing heat loss & gain in passive houses. Retrieved from https://www.passivehouseschool.com 3. OpenStax. (2016). Heat transfer methods – Conduction, convection, and radiation. In Douglas College Physics 1207. Retrieved from https://open.bccampus.ca
Level completed!
Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the National Agency. Neither the European Union nor National Agency can be held responsible for them.
(e.g.: If I am buying a new fan, I can explore more efficient fan models. On some days I can open the windows instead of using the fan or I can set the fan the lowest comfortable speed. I can allow the fan to rotate so that the entire room is cooled and I can keep the fan clear from obstacles so that air flow is not obstructed. I can turn off the fan when I am leaving the room for a long period of time and unplug the fan when I am not using it.)
(e.g: Fan)
(e.g.: the fan gets energy in the form of electricity when I plug it in. When I turn the fan on it uses energy to make the blades spin and produce wind for cooling. The faster the blades spin and the longer I have the fan on the more energy the fan uses.)
(e.g.: charging and using devices, using the fan, etc.)
(e.g.: I will apply the energy-saving habits I’ve set and keep track of my progress—like checking if my electricity bill decreases. I can also reflect on what worked well and what needs improvement, and adjust my plan to keep saving energy consistently.)
2.1 Energy Efficiency and Coservation - Level 1
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Transcript
Energy Efficiency and Conservation
Level 1: Beginner
Let's go!
Module 1 - Introduction
Energy is essential to our daily lives, from lighting our homes to heating and running appliances. However, understanding how energy is used, lost, and saved is key to making smarter, cost-effective, and environmentally friendly choices. This Level 1 course introduces fundamental concepts of energy efficiency and conservation, providing a solid foundation for anyone looking to become more energy-aware. At this introductory level, you will learn how energy flows, how buildings retain or lose heat, and how simple changes in habits and technology can make a big difference. By recognizing where energy is wasted and how to optimize its use, you can start making informed decisions that reduce energy bills and environmental impact.
Start Course
Energy Efficiency and Conservation Level 1: Beginner
Objectives
Modules
Exercises
Evaluation
Modules
Module 3: Thermodynamics in Everyday Life
Module 1: Introduction to the Objectives
Module 2: What Do Energy Efficiency and Conservation Mean?
Module 4: Energy Loss Mechanisms in Buildings
Module 5: The Role of Materials & Design in Energy Efficiency
Module 6: Conclusion
Module 1 - Introduction
Objectives
By the end of this E-lit Adults educational course level, you will be able to: • Explain the basic principles of energy efficiency and conservation. • Recognize how heat moves and how insulation and materials affect energy use. • Identify common causes of energy waste in buildings. • Apply simple, low-cost strategies to reduce energy consumption in everyday life. • Develop a basic awareness of how personal habits impact energy use and costs.
Module 2 - What Do Energy Efficiency and Conservation Mean?
What is Energy Efficiency?
Energy efficiency means using less energy to do the same tasks. It’s not just for homes—it also applies to offices, schools, and many other buildings. New technologies have made appliances, electronics, and machines more energy-efficient. For example, switching from old light bulbs to LED lights saves electricity because LEDs use less energy, produce less heat, and last longer.
Module 2 - What Do Energy Efficiency and Conservation Mean?
What is Energy Conservation?
Energy conservation means using less energy by changing how we use it. It’s about reducing unnecessary energy use to save resources and cut costs. A simple example is drying your clothes naturally on a clothesline instead of using an electric dryer. This choice not only saves electricity but also extends the life of your clothes. Therefore, energy efficiency and conservation ultimately lead to using less energy to perform daily tasks and functions.
Module 2 - What Do Energy Efficiency and Conservation Mean?
Differences between energy efficiency and energy conservation (1)
Module 2 - What Do Energy Efficiency and Conservation Mean?
Differences between energy efficiency and energy conservation (2)
Module 2 - What Do Energy Efficiency and Conservation Mean?
Action Plan on How to Start Conserving Energy at Home
Implement your plan and be consistent with the actions, then monitor for savings
Identify how you use energy
Understand how the energy is consumed by that appliance
Choose one appliance to focus on
Set goals on how you will use less energy and be more efficient while using it
Module 3 - Thermodynamics in Everyday Life
Thermodynamics is the study of how heat and energy move in different systems. Heat always flows from warmer to cooler places until the temperatures balance out.
Understanding how heat moves can help us:
By learning how heat transfer works, we can make smarter choices about insulation, home design, and energy use to stay comfortable while reducing our environmental impact.
Module 3 - Thermodynamics in Everyday Life
Conduction is when heat moves through solid objects. What happens? Heat travels through materials that are touching. Example: A metal spoon in a hot cup of tea gets warm because heat travels from the liquid to the spoon. In the home:
Covection (hot air)
Radiation
Convection
Conduction
Module 3 - Thermodynamics in Everyday Life
Convection is when heat moves through air or liquid. What happens? Warm air or liquid rises, and cooler air or liquid sinks, creating movement. Example: In a room with a heater, warm air rises to the ceiling while cool air stays near the floor. In the home:
Covection (hot air)
Radiation
Convection
Conduction
Module 3 - Thermodynamics in Everyday Life
Radiation is when heat moves in invisible waves What happens? Warm air or liquid rises, and cooler air or liquid sinks, creating movement. Example: In a room with a heater, warm air rises to the ceiling while cool air stays near the floor. In the home:
Covection (hot air)
Radiation
Covection
Conduction
Module 4 - Energy Loss Mechanisms in Buildings
In winter, heat escapes through walls, roofs, floors, windows, and doors. The more heat that escapes, the harder heating systems must work, leading to higher energy bills. In summer, the opposite happens—cool indoor air escapes, and hot outdoor air enters, making air conditioners work harder. Reducing energy loss is essential for lower energy costs, increased comfort, and a more sustainable environment.
What is Energy Loss?
Every building loses energy, mainly in the form of heat. This loss increases heating and cooling costs, making homes and offices less efficient. Heat moves naturally from warmer areas to colder areas until temperatures equalize. Without proper insulation and sealing, buildings constantly lose heat in winter and gain unwanted heat in summer.
Module 4 - Energy Loss Mechanisms in Buildings
This includes:
Energy Waste in Buildings
Energy waste is slightly different from energy loss. While energy loss refers to unintentional escape of heat (like through poorly insulated walls or windows), energy waste happens when energy is used inefficiently or unnecessarily.
Energy loss = passive, often unavoidable without proper insulation (focuses on heat). Energy waste = active misuse or inefficiency (could be electricity, fuel, heat, etc.).
Module 4 - Energy Loss Mechanisms in Buildings
3. Air Leaks and Ventilation
1. Windows and Doors
Poorly sealed or single-pane windows allow significant heat exchange. Small gaps around doors let warm air escape in winter and hot air enter in summer.
Cracks in walls, floors, and ceilings let warm air escape and cold air enter. Ventilation systems without heat recovery expel warm indoor air, wasting energy.
4. Floors and Basements
2. Walls and Roofs
Insufficient insulation lets heat pass through easily. Well-insulated walls and roofs slow down heat movement, reducing energy waste.
Uninsulated floors lose heat to the ground, making indoor spaces colder. Basements without insulation allow heat to escape into the soil.
Module 4 - Energy Loss Mechanisms in Buildings
The Impact of Heat Loss
Cold drafts and uneven room temperatures reduce comfort. In winter, some rooms may feel too cold, while others are too warm. In summer, air-conditioning struggles to maintain stable temperatures, increasing cooling costs.
Energy loss affects both finances and comfort. Buildings with poor insulation and air leaks are expensive to heat and cool. Heating systems must work harder, leading to higher utility bills and greater carbon emissions.
around 40%
of energy consumed in the EU is used in buildings
over 1/3
of the EU's energy-related GHG emissions come from buildings
+/- 80%
of energy used in EU homes is for heating, cooling and hot water
Module 5: The Role of Materials & Design in Energy Efficiency
An energy-efficient home uses materials and design features that reduce heat loss in winter and heat gain in summer. This leads to lower energy consumption, reduced bills, and a more comfortable indoor environment.
Buildings are constantly exchanging heat with their surroundings. Some materials trap heat efficiently, while others allow it to escape. The design of a building—including window placement, shading, and insulation—determines how much energy is needed for heating and cooling.
Module 5 - IntroductionThe Role of Materials & Design in Energy Efficiency
The Role of Materials in Energy Efficiency
Windows and Glass
Walls and Insulation
Roofing Materials
Flooring and Foundations
Module 5: The Role of Materials & Design in Energy Efficiency
How Building Design Affects Energy Use
A building’s shape, orientation, and window placement determine how much energy it needs. Well-designed homes take advantage of natural light, wind flow, and shading to maintain comfort without relying on excessive heating or cooling.
Window Placement & Orientation
Building Shape & Layout
Ventilation & Airflow
Module 5 - IntroductionThe Role of Materials & Design in Energy Efficiency
When renting or buying a home, it's important to consider its energy efficiency to save on utility costs and improve comfort. Ask these key questions to find out if the property is well-insulated and energy-efficient.
WINDOWS AND GLASS
Module 5 - IntroductionThe Role of Materials & Design in Energy Efficiency
ROOFING MATERIALS
Module 5 - IntroductionThe Role of Materials & Design in Energy Efficiency
FLOORING AND FOUNDATIONS
Module 6 - Conclusion
Conclusion
This level has introduced you to the fundamentals of energy efficiency and conservation, helping you understand how energy is used, lost, and saved. You’ve learned the difference between efficiency and conservation, how heat transfer (conduction, convection, radiation) affects buildings, and how simple actions like using LED lighting, insulation, and better habits can reduce energy waste and lower costs. These insights will help you recognize and minimize energy loss, enabling smarter choices at home and beyond.
With this knowledge, you can now apply basic energy-saving strategies in daily life. Whether it’s sealing air leaks, optimizing heating and cooling, or adopting mindful habits, small steps lead to significant savings and sustainability. By integrating these practices, you reduce costs, cut waste, and improve efficiency. This is just the beginning of your energy literacy journey, with future levels exploring advanced strategies and technologies.
Exercise 1
Click only on the correct concepts
ENERGY CONSERVATION
ENERGY EFFICIENCY
Turning off lights when not in use
Leaving appliances on standby mode
LED lighting
Unplugging unused electronics
Smart thermostats
Playing video games
Using a fan instead of air conditioning
Single-pane windows
Check
Check
Evaluation
Evaluation Quiz
1. This quiz consists of 7 multiple-choice questions related to energy sources, environmental impact, and energy transition. 2. Choose the correct answer for each question (only one per question). 3. The quiz helps reinforce key concepts covered in the course.
Evaluation 1/7
Evaluation 2/7
Evaluation 3/7
Evaluation 4/7
Evaluation 5/7
Evaluation 6/7
Evaluation 7/7
Certificate
Congratulations!
Certificate of Completion
To receive an Open Badge for this course, please contact the local project partner: Kaunas University of Technology.
Sources
1. European Commission. (2024). Energy Performance of Buildings Directive. Retrieved from https://energy.ec.europa.eu 2. Passive House School. (n.d.). The key to energy efficiency: Balancing heat loss & gain in passive houses. Retrieved from https://www.passivehouseschool.com 3. OpenStax. (2016). Heat transfer methods – Conduction, convection, and radiation. In Douglas College Physics 1207. Retrieved from https://open.bccampus.ca
Level completed!
Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the National Agency. Neither the European Union nor National Agency can be held responsible for them.
(e.g.: If I am buying a new fan, I can explore more efficient fan models. On some days I can open the windows instead of using the fan or I can set the fan the lowest comfortable speed. I can allow the fan to rotate so that the entire room is cooled and I can keep the fan clear from obstacles so that air flow is not obstructed. I can turn off the fan when I am leaving the room for a long period of time and unplug the fan when I am not using it.)
(e.g: Fan)
(e.g.: the fan gets energy in the form of electricity when I plug it in. When I turn the fan on it uses energy to make the blades spin and produce wind for cooling. The faster the blades spin and the longer I have the fan on the more energy the fan uses.)
(e.g.: charging and using devices, using the fan, etc.)
(e.g.: I will apply the energy-saving habits I’ve set and keep track of my progress—like checking if my electricity bill decreases. I can also reflect on what worked well and what needs improvement, and adjust my plan to keep saving energy consistently.)