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What are the spots?carbon dioxide emissionsfuel costs They show the relative Cost Savings and Reduced CO2 emissions.

Money
Saving
Tips
 Energy 
Savings 
Each Year
 Money
Savings
Each Year
 CO2
Savings
Each Year
 Comments
dishwasher energy saving tips Dishwashers
Read More
30kWh -
90kWh
£4.62 -
£13.86

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11.01kg -
33.03kg
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Run the machine full and less often

boil less water in kettle energy saving tips Boiling Water
Read More
82kWh -
164kWh
£12.628 -
£25.256

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30.09kg -
60.19kg
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Boil only what you need. Savings depend on how much tea you drink!

fridge freezer energy saving tips Fridge Freezers
Read More
50kWh -
400kWh
£7.7 -
£61.6

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18.35kg -
146.8kg
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Fridge maintenance. Savings depend on size, age and rating

dmoney saving tips tumble drying Tumble Dryers
Read More
90kWh -
350kWh
£13.86 -
£53.9

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33.03kg -
128.45kg
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Operate Less often, clean filters, part dry clothes?

differnce in cost of shallow or deep bath Baths
Read More
700kWh -
1400kWh
£30.1 -
£215.6

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147kg -
513.8kg
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Have shallower baths and consider how you heat water

change energy supplier to save money Change Supplier
Read More
0kWh -
0kWh
£0 -
£500

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0 -
0
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save money and have a beerSwitch! This is the single simplest way of saving money. This is equivalent to 100 pints of beer!

shower or power shower which is cheaper Shower of Power Shower
Read More
120kWh -
1100kWh
£18.48 -
£242

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25.2kg -
403.7kg
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Aviod immersion heated power showers

save money and energy with good loft insulation Install Loft Insulation
Read More
3000kWh -
3750kWh
£129 -
£161.25

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630kg -
787.5kg
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Modern loft insulation in a 3 bed semi - these numbers are for Gas, savings are greater for other fuels

save money and energy with good loft insulation Improve Loft Insulation
Read More
1000kWh -
1500kWh
£43 -
£64.5

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210kg -
315kg
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Modern loft insulation in a 3 bed semi - these numbers are for Gas, savings are greater for other fuels

This table is under construction there are more tips here.

Measures to reduce fuel bills: ROI* is the time it takes in years to return the investment in fuel savings for an average gas heated 3 bed semi-detached house.
Measure ROI*
hot water tank insulation save energy save money Lagging 1 Year
loft insulation energy saving Loft Insulation 2 Years
cavity wall insulation energy saving Cavity Wall Insulation 2.3 Years
underfloor insulation energy saving Underfloor Insulation 4.4 Years
solid wall insulation energy saving Solid Wall Insulation 15.8 Years
double glazing energy saving Double Glazing 58.1 Years
Renewable Energy Measures ROI** is the time it takes in years to return the investment in energy. The table assumes no government incentive schemes are used (FIT or RHI).
Measure ROI**
solar hot water energy saving costs Solar Hot Water 11 to 62 Years
ground source heat pump investment costs Heat Pumps 4 to 81 Years
domestic wind power costs Wind Power 16 to 32 Years
solar PV costs and investment Solar Photovoltaics 13 ± 3 Years
Household Energy Costs

Home insulation: What are the most effective forms of insulation and what provides the best return on investment.

Heat Loss from a house thick Loft Insulation install cavity wall insulation expensive double glazing under floor insulation lagging a hot water cylinder



Heating and Hot Water: How do different forms of heating and fuel compare?

hot water systems heating units central heating



Domestic Appliances: Guidance on the actual energy costs of and whether energy consumption should be a factor in your purchasing decision for new appliances.

Which Cooker Which Dish Washers Which Television Which Fridge Freezer Washing Machine Which Tumble Dryer Which Washer Dryer



Renewable Energy: Can enough energy be generated to meet your needs? What are the costs and most importantly what is the payback time on your investment?

Wind Turbine Solar cells Solar energy Ground Source Heat Pump



Energy Saving Tips: Practical advice on ways to save money and where you should focus your effort (and money) on making changes.

Energy Saver Lighting save Hot Water Electrical Appliances save energy save energy Cooking






Solar Air Conditioning

Solar Air Conditioning

An Article By Matt in Georgia USA

Introduction

It seems that with each year that goes by, the summers are getting hotter and the winters are getting colder. According to the National Climate Data Center, 7 out of 8 hottest years recorded were since 2001. Our planet's temperature is increasing rapidly due to the CO2 emission being set free when we are burning fossil fuels for our energy needs. When it comes to our home cooling system, it is a vicious circle: As our planet is turning up the heat, we are turning up the AC and this leads to more energy consumption, more burned fossil fuels and more CO2 emission discharge which eventually causes more heat, starting the process start over again.

The simplest way to solve or at least mitigate this problem is to find other energy resources that are eco-friendly. Summer, with its hot sun and clear skies, provides the perfect time to take advantage of solar energy. Today modern technology and innovative developments allow us to appreciate the sun not only for the hot beach days but for indirectly cooling our homes as well. Solar Air conditioning is a great way to take advantage of the sun in the time of the year when it is at its hottest.

What is Solar Air Conditioning:

Any type of cooling system that uses solar power to give cooling is considered solar air conditioning. Solar Air condition can lead to off-grid capabilities and is more eco-friendly than traditional cooling systems. Using solar energy to keep your home cool will also cut your electricity bills.

How does Solar Air Conditioning work?

Thermal panels absorb and collect solar energy and then send this power to the solar air conditioner. The air conditioner receives this collected energy through a specific piping system which is known as the Propylene Glycol transfer method. Solar air conditioning can be used to cool down your home in the summer and even as a heating system in the winter.

To run a solar air conditioner is not expensive as it uses little or no electricity and there is very little maintenance cost involved. Either small pumps, the fan or the controlling method which makes up parts of the air conditioning system are in some cases the only parts that use electricity.

Two types of Solar Air Conditioning can be taken into consideration:

Hybrids Solar AC

This system works through combining solar cells (PV) and direct current. A thermal collector, made from the copper heat conducting coils, absorbs the thermal energy from the sun and stores this energy. The energy in the collector operates the refrigeration cycle, turning energy into refrigerant liquid in a condenser when needed, this liquid provides cool air.

You can either plug-in the AC or use it with a battery. The thermal solar panels still work in the shade or at night as it is able to run in on the surrounding air temperature which can be between -5 and 50 degrees. The solar panels of the Hybrids systems do not have to go on the roof, it will do perfectly good on the wall next to the unit itself. Many solar hybrid air conditioners are similar to traditional AC in appearance and at the same time compact and easy to install.

Solar absorption chillers

Chillers have collectors that gather the sun's thermal energy. This solar energy gets moved by a glycol H2o solution through pipes, pumps and controllers. Through an evaporation and condensation process these chillers are able to heat and cool water which is needed to cool the air. The fan and motor that runs on solar energy, blow the air over a water saturated material that allows for the cooling effect. When installing a chiller your electricity bill will lower, but it can increase the water consumption a bit. For chillers to work, they need to be connected to a water line. Absorption chillers are seen to be very energy-efficient, durable and easy to keep up.

Solar energy air conditioning is still seen as very expensive to buy and set up, but they can save you a lot of money on the electricity bills, however. For business, air conditioning systems are one of the highest expenses during a year and this makes solar air conditioning very appealing to businesses worldwide. With the focus on the green movement, zero-energy buildings have become the goal for many businesses. Hopefully, an increase of solar air conditioning use and improved technology will make solar air conditioning a more affordable option to homes as well.

Last Updated on Thursday, 01 June 2017 14:25
 

Electricity Cost Calculator

Average electricity rates for various counties and regions

The average electricity rates for various territories in the world is presented below for reference.
Last Updated on Wednesday, 19 April 2017 15:07
 

Air Conditioning

how much does it cost to use an air conditioner

How much does it cost to run an air conditioner?


This is an almost impossible general question to answer as it depends on so many different factors.

Last Updated on Thursday, 06 April 2017 15:34
 

Lights

cost to have a light on for 1 hour

How much does it cost to have a light on for 1 hour?


Well it depend on the light.

Last Updated on Friday, 31 March 2017 17:21
 

Televisions

cost to run a television for 1 hour

How much does it cost to have a tv on for 1 hour?

The running costs of TVs vary greatly depending on a number of factors:-

Last Updated on Wednesday, 29 March 2017 17:39
 

Solid Wall Insulation

solid wall insulation investment
 Cost:  High
 ROI:  15.8 Years
 Skill:  Specialist
 Energy Saving:  High
 CO2 Saving:  High
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

If you have a very old house with solid walls then you are losing a lot of heat through the walls. Solid walls transmit heat at, at least twice the rate that uninsulated cavity walls do. Throughout the heating and insulation section of this site an average house is used and assumes that the walls have cavities, such that a three bed house with no insulation measures, is approximated to use 20,000kWh per year and the 5 bed house is approximated to use 30,000kWh. With a solid wall house the starting point is higher about 20% higher. So for this section we will use the numbers 24,000kWh for the smaller house and 36,000kWh for the larger house for the calculations.

Last Updated on Sunday, 12 March 2017 20:37
 

Solar Photovoltaic’s (Without FITS)

solar pv economics
 Cost:  High
 ROI:  13 ±3 Years (No FIT)
 Skill:  Specialist
 Energy Saving:  Medium
 CO2 Saving:  High
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

The terms solar energy and solar power are often used to describe technologies which collect the energy of the sun and redistribute it for our use. These terms are however a little ambiguous. For example, solar energy effectively drives our whole planet, wind, wave and fossil fuels could ultimately be regarded as solar energy.

Last Updated on Wednesday, 05 April 2017 14:36
 

Solar Hot Water

solar hot water costs and savings
 Cost:  High
 ROI:  11 to 62 Years (No RHI)
 Skill:  Specialist
 Energy Saving:  Medium
 CO2 Saving:  High
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

What is Solar hot Water?

Before we start on what, we need to cover where. Solar Hot Water is used all over the world, it is very effective especially if you live in a warm country, this article is about the UK where solar hot water is much less effective option than in for example Spain. We also do not cover any grant schemes here (Renewable Heat Incentive, RHI), they are changed to often! With a grant scheme you will find that an installation will be more cost effective.

Last Updated on Wednesday, 05 April 2017 15:18
 

Wind Power (Without FITS)

economics of a domestic windmill
 Cost:  High
 ROI:  16 to 32 Years (No FIT)
 Skill:  Specialist
 Energy Saving:  Medium
 CO2 Saving:  Medium
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

This section is only concerned with wind turbines that can be sensibly added to a residential home. Unlike other forms of renewable energy, wind power requires very little explanation. Most of us will understand that the wind rotates a wind turbine generating electricity.

Last Updated on Tuesday, 04 April 2017 18:20
 

Heat Pumps

economics of a various heat pumps
 Cost:  High
 ROI:  4 to 81 Years (No RHI)
 Skill:  Specialist
 Energy Saving:  Medium
 CO2 Saving:  High
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

What are they?

There are three main types, these are:-

  • Ground Source Heat Pump (GSHP),
  • Water Source Heat Pump (WSHP), and
  • Air Source Heat Pump (ASHP)
Last Updated on Tuesday, 04 April 2017 18:24
 

Underfloor Insulation

underfloor insulation great way to save energy
 Cost:  Low
 ROI:  4.4 Years
 Skill:  DIY Skilled
 Energy Saving:  Medium
 CO2 Saving:  Medium
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

If you have timber floors, mineral wool insulation* can be used between the joists to insulate your floor. Assuming this is the only insulation measure installed in your house you can reduce the amount of heat loss through your floor by about a half and can therefore reduce your energy bill by about 7 or 8%.

Last Updated on Thursday, 06 April 2017 15:30
 

Double Glazing

double glazing bad investment just to save energy
 Cost:  High
 ROI:  58.1 Years
 Skill:  Specialist
 Energy Saving:  Medium
 CO2 Saving:  Medium
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

Replacing your windows with double glazing to just save money does not actually make a lot of sense, you will reduce heat flow through you windows by at least a half and again assuming this is the only insulation measure installed in your house you should reduce you overall energy bill by between 5% and 10%. For the smaller 3 bed house assuming you save the maximum 10% of your heating costs you should save £70 each year if you are gas heated and if it cost about £5000 to install the windows the investment will payback in about 70 years.

Last Updated on Sunday, 05 March 2017 21:07
 

Heat Loss

 

Introduction

If you have thermostatically controlled heating in your home, and most of us do, then your boiler will be controlled by the temperature measured in a heat lossparticular area in your home i.e. where the thermostat is placed! Regardless of how well insulated you home is the boiler will burn fuel and supply heat to your radiators until the temperature set on this thermostat is reached, before switching itself off. This does not mean that all of the rooms in the house are at the main thermostat temperature, their temperature will be dependent on the heat loss from the room, the radiator heat output of each room and the individual radiator thermostat (if you have them fitted). So the more you can do the reduce heat loss from your home the more rapidly the desired temperature will be reached and the earlier the boiler will switch off, ultimately reducing the amount of fuel you burn and amount you pay.

Last Updated on Sunday, 22 November 2015 22:19
 

Cookers


oven energy costs oven energy costs

How much does it cost to use an oven?

How much does it cost to use a hob?


Information on the energy consumption and running costs of cooking appliances is not readily available. Energy efficiency labelling is in place for electric ovens but not for gas ovens. Also there are no energy labels for hobs, either electric or gas. So if you are choosing a new cooker, how can you assess likely running costs and are differences in running costs sufficient to influence your purchasing decision? Below are some tips to help you.

Last Updated on Thursday, 30 March 2017 21:49
 

Hot Water Systems

money and hot watermoney

We cover here only spontaneous water heaters, they are generally fueled by either natural gas or electricity; however there are some units on the market using LPG, especially for caravan applications there are units that use butane or propane in gas cylinders.

Last Updated on Wednesday, 08 March 2017 11:45
 

Dishwashers

dish washer running costs

How much does it cost to run a dishwasher?


Dishwashers carry an EU energy label which rates products from A-G for energy efficiency, cleaning performance and drying performance. The vast majority of products are at least A rated for energy.

Last Updated on Thursday, 30 March 2017 10:41
 

Loft Insulation

loft insulation good investment save money
 Cost:  Low
 ROI:  2 Years
 Skill:  DIY-Skilled
 Energy Saving:  High
 CO2 Saving:  High
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

Since heat rises it follows that heat loss through the roof is a large contributor to energy waste in your house. By installing modern 290mm thick insulation in your loft space you could save up to 25% of your heating bill but perhaps more realistically by 20%. By upgrading old thin insulation you may also be able to save an additional 7 or 8% of you bill.

Last Updated on Monday, 06 March 2017 14:28
 

Cavity Wall Insulation

install cavity wall insulation save energy and money
 Cost:  Medium
 ROI:  2.3 Years
 Skill:  Specialist
 Energy Saving:  High
 CO2 Saving:  High
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

If you have cavities in your walls which are not already filled with insulation then you have a great opportunity to save quite a lot of money. Most household heat is lost through the walls and anything to slow this down helps. The story is similar to loft insulation, you can reduce your energy bill for heating by up to 25%, but again more realistically 20%. The table below calculates the effect of only insulating your cavities considering several main household fuels and estimates a payback time for the investment. For a larger house cavity wall insulation will cost £550 and for the smaller house about £400.

Last Updated on Thursday, 06 April 2017 15:07
 

Tumble Dryers

washer dryer running costs

How Much does it cost to run your Tumble Dryer?


Drying your clothes in a tumble dryer can be expensive as they consume large amounts of energy. The EU energy label for tumble dryers is calculated using the cotton drying cycle with a maximum load. Products are rated A – G according to the energy required per kilogramme of washing.

Last Updated on Thursday, 30 March 2017 08:55
 

Fridge Freezer

fridge freezer energy consumptionFridges and freezers are switched on 24 hours a day 7 days a week so running costs are high. All new fridges and freezers carry an EU energy efficiency rating from A++ (the most efficient) to G (the least efficient). The vast majority of products are at least A rated. However for refrigeration products the rating is not based on actual energy consumption but the energy efficiency in relation to size (the internal volume of the compartments).

Last Updated on Saturday, 25 March 2017 22:56
 

Lagging

enery savings by lagging your hot water cylinder
 Cost:  Low
 ROI:  1 Year
 Skill:  DIY-Easy
 Energy Saving:  Medium
 CO2 Saving:  Medium
 How much this measure costs to install: Low : Medium : High
 ROI is the time it takes to return the investment in fuel savings for an average gas heated 3 bed semi-detached house and assumes no government incentive schemes are used: Years
 How easy this is to do: DIY-Easy : DIY-Skilled : Specialist
 How much energy will be saved with this measure: Low : Medium : High
 How much Carbon Dioxide emission will be saved with this measure: Low : Medium : High

It is fairly obvious that hot water pipes and hot water storage cylinders should be insulated to prevent heat loss. Newer cylinders already have insulation pre fitted, but if your tank is older and un-insulated then according to the Energy Savings Trust by fitting a hot water jacket you will save about £50 per year. Your savings would be even more however if you regularly use an electrical immersion heater, since it costs a lot more to heat water with electricity.

Given that a new thick jacket (75mm) for a hot water tank costs about £15, it should pay for itself in less than six months. Even upgrading an old thinner jacket, is worth considering and will pay back the investment in about 2 years.

This energy/money saving measure is almost a must do. Even if you are renting off a landlord who is too tight fisted to put a jacket on the cylinder, you could buy one and take it with you when you leave!

Insulating hot water pipes will save you less, possibly £10 per year but DIY installation is very easy and materials will only cost about £10. So it will only take a year to payback this investment.

Last Updated on Thursday, 28 February 2013 22:03
 

Washing Machines

washing machiune runnning costs

How much does it cost to run a washing Machine?


For washing machines the energy efficiency scale is calculated using a cotton cycle at 60°C (140°F) with a maximum declared load. This load is typically 6 kg. The energy efficiency index is in kWh per kilogramme of washing.

Last Updated on Thursday, 30 March 2017 12:33
 

Washer Dryers

washing machine energy to operateWasher dryers are regarded as a separate category on the energy efficiency scale to ordinary washersand so an A rated washer dryer cannot be compared with an A rated washing machine. The energy consumption figures are based on a full wash and dry cycle with a maximum load. The table below shows the costs of using the wash cycle only or the full wash and dry cycle on a typical washer dryer machine.

Last Updated on Friday, 31 March 2017 17:31
 

Central Heating

central heating cost comparisonsmoneyGenerally central heating is the most energy and cost efficient way of heating a home, particularly those systems using fuels that are burned in a boiler. It is also very often one of those areas where you have the least control. Factors outside of your control may include:-

Last Updated on Monday, 06 March 2017 11:30
 

Heating Units

cost of running heatersmoneyThe number of methods to provide heating to your accommodations is enormous.  This article compares the potential running costs of various methods of heating. It excludes larger heating systems, like central heating, groundsource heating or airsource heating as these are very different and require large capital expenditure to install. These are considered in a separate article.

To get a meaningful comparison, the same power output and hence the same energy use is used in each case. The calculations are based on each heater having a power output of 3kW, and operating for 5 hours a day for about one third of a year. 3kW was chosen since this is the maximum power output of an electrical heater on a single ring main plug socket and since all the other appliances can out put the same heat power. All appliances are also assumed to be non thermostatically controlled, i.e no maximum room temperature has been set. The rate of heat loss from a room is also not considered here.

Last Updated on Saturday, 25 March 2017 15:23
 

Overall Household Energy Use

overall household energy use and costsIt is important to get overall household energy use into perspective to understand where to cut costs and when to invest in new equipment.

Last Updated on Monday, 20 March 2017 15:11
 


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