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Supported by the European Commission through the ‘intelligent Energy-Europe’ Programme and the Cyprus Union of Communities
 

 

   

FAQ’s - Frequently asked questions about renewable energy, energy saving and sustainable transport

 
I want to install a photovoltaic system in my house. What are my options?
I intend to construct my new house. What I should know about the energy performance of buildings?
How can I improve the energy efficiency of a building and thus the energy class in the Energy Performance Certificate?
I want to thermally insulate my building. What should be the steps to follow whereas the money I can spend is limited?
I want to buy new electrical appliances. How do I know if a device consumes more or less electricity?
How can I save energy and money at home without spending gudge amounts of money?
Fuel costs have increased significantly in the recent years. How can I save fuel and therefore protect the environment and money?
What should I know if I intend to install a solar thermal system for space heating of my house?
Is it possible to install solar thermal systems for space heating system to an existing dwelling?
I am looking to install geothermal heat pump system in my house that is under construction, but I've heard that a large land area for such a system is needed. Is that true?
What is the difference between the traditional wood biomass fireplace and the energy efficient fireplace?
Where can I find information on the Support Schemes for Renewable Energy Sources (RES) and Energy Saving and the relevant application forms?
What is the amount of CO2 emissions reduction by using renewables to generate electricity?
What are the binding targets of Cyprus on RES by 2020?
What is the current situation on the RES share in Cyprus?
What should be the contribution of RES-electricity by 2020 under the National Renewables Action Plan?
Where can I find information on renewable energy technologies that can be applied to my house?
 
 

 

I want to install a photovoltaic system in my house. What are my options?

The installation of a photovoltaic system depends mainly on the purpose that is going to serve.

First option
If the purpose is to install a photovoltaic system to cover the electricity needs of a building (stand alone system) then you must make the appropriate design, taking into account the power requirements and the requirements on maximum electricity demand. In those cases it is necessary an energy storage system such as in batteries. This option applies to residences which are located far from the electricity network (e.g. isolated rural areas)..

Second option
If the aim is to make use of the available surface area of the roof of the building for production of green electricity, then the best option is the PV system to be grit connected. In this case, the generated electricity is sold to the network with a subsidized price of each kWh produced (purchase Feed-in tariff). The electrification of the building is achieved by buying electricity from the electricity provider (utility).

Third option
In the near future it is expected the wide application of smart systems that will allow the owner of a photovoltaic system using direct energy produced by the PV system while the surplus of production will be supplied into the electricity grid. For those cases where the production of electricity from PV will not be sufficient for the electricity requirements of the building (such as during the night), then electricity from the grid will be supplied to the building. In this case does not require energy storage system.

          
Source: www.epia.org

I intend to construct my new house. What I should know about the energy performance of buildings?

Since 2007 new dwellings are subject to mandatory shell insulation and by 2010 should be additionally issued the Energy Performance Certificate (EPC) of class equal or greater than B. The Energy Performance Certificate should be issued and signed by registered qualified experts entrusted that undertake this task by the owner the building.
A building with higher energy efficiency has lower energy requirements and therefore the operating costs for heating and cooling, for lighting, hot water etc are significantly lower.

How can I improve the energy efficiency of a building and thus the energy class in the Energy Performance Certificate?

Some of the interventions that contribute to improve the energy efficiency of a building are the following:

    Insulation roof and shell of the building

    Choice of double glazed windows and glass insulation Low e.

    Utilise solar water heater for domestic hot water

    Heating and cooling using solar thermal systems

    Heating and cooling using geothermal heat pumps

    Install energy efficient fireplace or central heating system with solid biomass

    Install external blinds on windows

    Building orientation based on the principles of bioclimatic design

    Use energy efficient electrical appliances

    Use efficient for lighting (fluorescent, LED, etc.)

    Installing a photovoltaic system for electricity generation

    Install small wind turbine to generate electricity.

HEAT AND ELECTRICITY BY THE SUN- Χρίστος Χριστοφίδης - Διάκριση house_wind_turbines_1 ebro_cat IMG_9846

I want to thermally insulate my building. What should be the steps to follow whereas the money I can spend is limited?

The greatest heat loss in a building usually comes from the roof (35-40%). Therefore, the first step to be done in an existing building is the insulation of the roof. In the market are several suppliers / installers of insulation materials which offer different alternatives. What should be considered for selecting the most appropriate solution is:

    The thermal conductivity of thermal insulating material 'λ'. The lower the "λ" the better the insulation material.

    The thickness of the thermal insulation. Greater thickness gives better (better = lower) U value and thus better insulation of the building (u = thickness / λ).

    The properties of thermal insulating materials to present resistance to weather conditions of Cyprus.

    The cost of purchasing and installing insulation.

    The reliability of the supplier / installer. For the installation must be strictly followed the instructions / specifications of the manufacturer. It is important the selection of well-trained installers/suppliers.

heat%20loss%20logo  exilasmeni polisterini 

I want to buy new electrical appliances. How do I know if a device consumes more or less electricity?

Household electrical appliances must by law (N31 (I) of 2009) have energy label. The energy label classifies an electrical device on a scale from "A+++" to "G" where “A+++” class is the most energy efficient. The label also indicates the quantity of electricity consumed by this device in kWh per year for a standard operation. In this way, each buyer can evaluate two or more electrical appliances according to their energy efficiency and choose the one with the highest energy class (Class A+++ when is feasible). Equipment which should have the label is:

    Refrigerators

    Washing Machine

    Clothes dryers

    Dishwashers

    Light bulbs

    Electric ovens

    Air conditioning units

 pict_20090505PHT55016

On this issue since the 30/11/2010 there are new regulations. Please check the following websites:
http://ec.europa.eu/energy/efficiency/labelling/labelling_en.htm

How can I save energy and money at home without spending gudge amounts of money?
Usually the biggest waste of energy at home is due to bad habits or ignorance of the tenant for simple energy efficiency measures. Therefore, by applying some simple energy tips can save money and energy without significant interference. Some tips are:

1. The heating/cooling device should be adjusted at 26 ° C in summer and 21 ° C in winter.
2. Check for heat loss from doors and windows. Add special plastic sealing tape where appropriate.
3. Use ceiling fans.
4. Close the heating / air conditioning and lighting when the space/room is not used.
5. Use the appropriate blinds and curtains in your room to save heat and light from the sun in the winter and get rid of unwanted heat in summer.
6. Adjust your clothing at home depending on the season.
7. Keep windows closed and doors when running the air conditioning.
8. Clean / Maintain heaters or air conditioning filters and avoid being placed furniture in front of them.
9. Do not leave electronic equipment in your office on when not in use
10. Do not let the TV, computer, photocopying, speakers, radio, DVD player in standby mode.
11. Do not leave open the door of the refrigerator, freezer or oven for a time. Decide in advance what you need to get through.

anemistiras 3 energy-saving-tips CHG211ian_opt

Fuel costs have increased significantly in the recent years. How can I save fuel and therefore protect the environment and money?

1. At short distances prefer to walk or cycling instead of using the car.
2. Use public transport to transport you and encourage your children to use the school buses.
3. Service your car regularly and check the oil level.
4. Check the tire pressure monthly.
5. Remove unnecessary weight from the car.
6. Use air conditioning only when necessary.
7. Turn off the engine when you stop for more than one minute.
8. When accelerating, change as quickly as possible the speeds.
9. Try to predict traffic flow. Avoid unnecessary braking and acceleration.
10. Share with others the car for work or leisure.
11. Avoid using your car during peak hours.
12. If you buy a new car choose one with low fuel consumption and low CO2 emissions (electric or hybrid, etc.).

  us_man_riding_a_bicycle_with_a_safety_helmet  

What should I know if I intend to install a solar thermal system for space heating of my house?

Before selecting the heating (or cooling) of your house you must consult a professional engineer who will calculate the required heating loads. These loads depend on several parameters of the building such as:

insulation

design and orientation

size (area and volume)

location (mountains, plains, etc.)

When the professional engineer calculates the heat load requirements, can propose the size and the type of the heating system. If your intent is to install solar thermal for space heating you should know the following:

Solar panels can be used to heat water for space heating in combination with another heat source (oil, electricity, biomass, etc.) that you should choose.

It is estimated that by installing solar panels covering approximately the 15% of the area of a house that needs to be heated may be covered approximately 40% of total needs for space heating using solar energy.

The placement of the solar panels can be horizontal or on a sloping roof. It should be ensured the availability of the required surface.

Solar panels should be face south and slope 35o ± 15o (+15o is recommended when we want to have better performance in winter).

You should choose an appropriate way of heating the house. If that is with radiators or under floor etc, because this parameter affects the design and performance.

The cost is higher than in conventional systems but you can take advantage of the available Governmental Support Schemes (www.cie.org.cy)

DSC_1513

Is it possible to install solar thermal systems for space heating system to an existing dwelling?

Yes it is a possible. You may consult an experienced engineer in solar thermal installations to offer you the available options. Solar panels can be used to support the existing heating system of your dwelling and therefore you save energy and money.

I am looking to install geothermal heat pump system in my house that is under construction, but I've heard that a large land area for such a system is needed. Is that true?

Not always.
The shallow geothermal energy can be utilized primarily in two ways. By installing horizontal geothermal closed loop system, or by installing vertical geothermal closed loop system.

Horizontal geothermal circuits are placed at a depth of 3-5 meters and require relatively large area.
Although vertical geothermal heat pumps have higher costs especially for drilling (required drilling depth of 5-100 m), is used in most cases because it requires less space.

A typical example is that a dwelling 200-250 m2 required drilling depth of 100 m. The positions of the boreholes are recommended to be at least 6 meters apart and 3 m from the boundary of the land. The wells can then be covered with the garden or even some auxiliary constructions of the building itself.

IMG_9846 geothermie_prinzipskizze 

 

What is the difference between the traditional wood biomass fireplace and the energy efficient fireplace?
In the energy efficient fireplace the wood burning is controlled with no excess air intake so as to achieve higher performance. The yield of energy fireplaces range from 73% to 85% in contrast to traditional fireplaces that have much lower yields (20-30%). As a result can be achieved big saving of wood, reduction of emissions due to complete combustion and reduce the smell of smoke.

DSCF6271 ebro_cat

Where can I find information on the Support Schemes for Renewable Energy Sources (RES) and Energy Saving and the relevant application forms?

The Support Schemes and related forms are available on the web site of the Cyprus Institute of Energy www.cie.org.cy

What is the amount of CO2 emissions reduction by using renewables to generate electricity?

In Cyprus, the electricity generated primarily from three power stations of the Electricity Authority of Cyprus (located at Moni, Dhekelia and Vassiliko). A smaller percentage (around 4%) is contributed by the four wind farms, and the biogas plants treating farming wastes and some contribution is accounted by the photovoltaic systems on roofs of buildings and on the ground.

It is estimated that electricity consumed in any premises / house, burden the environment with about 900 gr CO2 per kWh. Therefore, if a house uses for example for photovoltaic electricity generation, it will save 900 gr CO2 per kWh.

A typical house in Cyprus consumes about 5000 kWh electricity per year. If that electricity produced from renewable sources it will reduce the emission of 4.5 tonnes of CO2 per year.

DEKELIA POWER STATION

What are the binding targets of Cyprus on RES by 2020?

They have set the following quantitative and binding target for 2020 for Cyprus:

Contribution of renewables to the final energy 13%

Contribution of renewables in energy consumption of road transport 10%

Reduction greenhouse gas emissions by 5% (non ETS) compared with 2005

What is the current situation on the RES share in Cyprus?

The contribution of RES at the end of 2010, in the final energy consumption is estimated at 6.5% with the contribution of wind farms that are licensed and under construction. To calculate this share the following were taken into account:

The share of RES in electricity production is estimated at 4.3%.

The share of renewables in heating and cooling is estimated at 16.2%.

The share of renewables in transport is estimated at 2.2%.

Source: National Renewable Energy Action Plan is available on the web:

http://ec.europa.eu/energy/renewables/transparency_platform/action_plan_en.htm

What should be the contribution of RES-electricity by 2020 under the National Renewables Action Plan?

The target set for the contribution of RES in electricity generation is 16% for 2020 with a total installed capacity of 584 MW. The share in MW of each energy source is shown below:

Wind energy: 300 MW
Solar photovoltaics: 192 MW
Solar thermal energy: 75 MW
Biomass: 17 MW

For more information on the National Renewable Energy Action Plan is available on the web:

http://ec.europa.eu/energy/renewables/transparency_platform/action_plan_en.htm


Where can I find information on renewable energy technologies that can be applied to my house?

The Cyprus Energy Agency as a non-profit organization established to promote renewable energy and energy efficiency, has prepared some advisory technical guides for all RES technologies. These guides are available electronically on the website of the Cyprus Energy Agency www.cea.org.cy but also you can get a free hard copy if you contact the Cyprus Energy Agency.

 

For more information please contact the staff of the Cyprus Energy Agency at Tel: 22667716, 22667726 and email info@cea.org.cy .

 

 

 
10-12 Lefkonos Street, 1011 Nicosia, Cyprus Phone : +357-22667716, Fax : +357-22667736 info@cea.org.cy