ALTERNATIVE DOMESTIC FORMS OF ENERGY AND ELECTRIC MOBILITY

Erasmus + 2025-26

RENEWABLE ENERGY SOURCES: WHAT ARE THEY?

​

​

Renewable energy sources are forms of exploitable energy derived from various natural processes, such as wind, sun, geothermal energy, water circulation, and others.

​

​

They are perhaps the most important effort to solve two fundamental problems the planet is facing: the gradual reduction of traditional energy sources (fossil fuels) and the decrease of environmental pollution from the use of traditional energy sources.

WIND POWER

​

Advantages:

• High efficiency in areas with good wind energy potential
• Low operating costs after installation
• Environmentally friendly

Disadvantages:

• Variability in energy production
• Visual and acoustic nuisance
• Need for continuous maintenance

​

Wind power is the energy produced by harnessing the wind. Wind power has grown significantly in recent decades and is a key pillar of the transition to clean energy.

Home applications:

Small wind turbines: these are ideal for supplying the energy required by a family or small business. Domestic wind turbines can be installed in gardens, on rooftops, or even on top of a building.

​

HYDROELECTRIC ENERGY

Hydroelectric energy is a mature technology that uses the flow of water to generate electricity.

Technologies

Hydroelectric Power Stations with Dams: Pumped Storage Facilities (energy storage technology that works by pumping water from a lower reservoir to a higher one).Small Hydroelectric Plants (hydroelectric power stations up to 15 MW).

​

Advantages:

• High reliability
• Long lifespan of the installations
• Multiple uses (e.g., irrigation, flood protection)
• Low operating costs

Disadvantages:

• Significant environmental impacts from large dams (e.g., changes to ecosystems)
• High initial construction costs
• Dependence on the availability of suitable sites and water resources
• Potential social impacts (e.g., resettlement of populations)

GEOTHERMAL ENERGY

​

Geothermal energy uses heat from inside the Earth to generate electricity and heating.

Technologies:

• High enthalpy: For direct electricity generation
• Low and medium enthalpy: For space heating and cooling
• Geothermal heat pumps: For domestic and commercial use

​

Advantages:

• Stable and reliable energy production
• Small carbon footprint
• Low greenhouse gas emissions
• Can be used for direct heating

Disadvantages:

• Limited geographical availability for high-enthalpy sources
• Potential release of greenhouse gases from underground deposits
• High initial exploration and development costs
• Potential depletion of the geothermal field over time

​

SOLAR ENERGY

​

Technologies:

Photovoltaic (PV) systems: Convert sunlight directly into electricity.Solar thermal systems: Use solar heat to generate electricity or heating.

Advantages:

• Abundant and inexhaustible energy source
• Zero greenhouse gas emissions during operation
• Continuous cost reduction and efficiency increase.
• Flexibility in installation (from domestic to industrial applications)

Disadvantages:

• Dependence on weather conditions and daily cycle
• Need for energy storage for 24/7 supply
• Requirement of large areas for large-scale production
• Environmental concerns regarding the production and recycling of panels

​

SOLAR ENERGY AT HOME

It is utilized through photovoltaics, providing electricity to all devices.

​

Technologies:

• Solar water heaters: heating water for domestic use
• Solar heating: absorbs solar energy and converts it into heat, which is then distributed throughout the home.
• Solar cooling: uses solar heat to power cooling processes, usually through absorption cooling cycles or desiccant systems.
• Photovoltaic systems: produce electricity that is consumed in the home, either connected to the grid or autonomously in off-grid homes, where the energy is stored in batteries.

What is Eco-Friendly Transportation?

Εco-friendly transportation is any form of transportation that reduces negative impacts on the environmental and social systems around it. It focuses on cutting carbon output, conserving energy, and supporting more equitable access to mobility.

Why Sustainable Mobility Matters ?

Mobility underpins economic and social progress, but the current model is unsustainable. Car dependency, especially in sprawling cities, generates congestion, worsens air quality, and increases greenhouse gas emissions.

Transitioning to sustainable models is crucial because it reduces pollution, lowers health risks, and lays the groundwork for resilient communities.

Choosing low-impact vehicle options is not just good for the environment but also about safeguarding the future of work, education, and social life.

​

​

​

How can we achieve eco-friendly transportation ?

• Walking and Cycling :Walking and cycling remain the most green and accessible forms of travel. They require no direct fuel, generate zero emissions, and benefit physical and mental health.
• Electromobility (Electric Vehicles) : Electric vehicles are central to eco-friendly transportation strategies. Unlike traditional vehicles, they run on battery power and and produce no tailpipe emissions.
• Carpooling and Ride-sharing : Carpooling (Two or more people sharing the same car) reduces the number of vehicles on the road, cutting both fuel use and traffic congestion. Organised ride-sharing platforms make it easier for commuters to coordinate journeys and lower costs
• Public Transit Systems: Investing in public transit has one of the greatest returns for reducing congestion and pollution. A single train can replace hundreds of private cars, and emissions drop significantly when powered by renewable energy.

​

​

​

WHAT IS ELECTROMOBILITY ?

Electric mobility, or e-mobility, refers to the use of electric-powered vehicles and related technologies for transportation. This includes a variety of vehicles such as electric cars, buses, trucks, bikes, scooters, and even electric ships and planes. E-mobility also includes the necessary infrastructure for supporting these vehicles, such as charging stations.

HOW DOES IT WORK ?

Electric mobility technology centers around the efficient conversion of electrical energy into mechanical energy to power vehicles. The process begins with electrical energy stored in a rechargeable battery. An inverter then converts the battery's direct current (DC) into alternating current (AC), which drives the electric motor.

​

​

Environmental Benefits

• Electric vehicles (EVs) release no tailpipe emissions. This means they avoid pollutants like carbon dioxide. As a result, air quality improves, especially in congested urban areas.
• EVs are quieter than gasoline cars, cutting noise pollution.

Economic Benefits

• Electric vehicles (EVs) may cost more upfront, but ownership costs less. This is because fuel costs are lower, so the maintenance is cheaper. Electricity is cheaper than gasoline.
• EVs need less maintenance due to fewer moving parts.

Social Benefits

• Electric mobility boosts social equity by providing cheaper transport. For instance, electric bikes and scooters are good options for those without cars.
• Using electric vehicles encourages environmental responsibility and community involvement.

​

DISADVANTAGES OF ELECTROMOBILITY

Infrastructure limitations

• There is lack of enough charging spots. While more stations are being built, gaps remain. This makes long trips hard for EV owners. So, governments and companies must boost the charging network.

Battery Production and Recycling

• Battery production and recycling present big environmental and logistical challenges. Extracting materials like lithium, cobalt, and nickel harms the environment and raises ethical issues.

Market and Policy Support

• Electric mobility growth relies on market conditions and supportive policies. The electric vehicle market is growing but is still small compared to traditional cars. As a result, governments include subsidies, tax incentives, and regulations for EV adoption.

​

​

Thank you