▷ Solar LED lamps save 10.000 trees a year (more than 7 football pitches)

Technological advances have led to the development of lamps that can illuminate spaces for longer periods of time, provide more light and consume much less.

LED luminaires are capable of transforming more than 80% of the energy consumed into light, while traditional incandescent lamps generate a much lower percentage of light (10%).

A big difference if we take into account the increase in the price of electricity that we have suffered in recent months, and even more so when you introduce into the equation the solar LED wall lights that use direct sunlight for their operation.

Solar LED or traditional lighting

What saves the most?

In addition to the economic aspect, which plays a fundamental role when it comes to choosing one or the other, environmental care also plays an important role nowadays.

For this reason, at Arteconfort we want to clarify how much these two lighting elements save in terms of CO2 emissions through a comparison that you can see below.

How much an incandescent lamp consumes

To calculate the consumption of a traditional light bulb you only need to know the power of the appliance, that is, the consumption in watts (W). The manufacturer will tell you this on the packaging or in the instruction manual.

Now we will see the total energy consumed by this type of traditional luminaire, taking as an example an approximate operation of 8 hours a day throughout the year.

To do this we have to multiply the power of the incandescent lamp by the number of hours in operation, divide it by 1,000 to get the kilowatt/hour, multiply it again by €0.34 (the reference we have taken for the price of electricity) and multiply the result by 365 days.

60 Watts x 8 hours = 480 Wh

480 Wh / 1.000 = 0,48 KWh

0,48 KWh x 0,34 € = 0,163 €

0,1632 € x 365 days = 59,57 €

In this case, the annual expenditure would be almost 60 euros, i.e. 5 euros per month. If we take into account that there may be more than a dozen lamps of this type in a household, the consumption is quite high.

How much an LED lamp consumes

To calculate the consumption of an LED luminaire, we have taken as an example the power of the Jano L solar wall light, which is 13.4 several (W).

Para obter o resultado do consumo do projector LED, teremos em conta o mesmo tempo de utilização (8 horas por dia durante todo o ano) e o mesmo preço por kWh, a fim de podermos fazer uma comparação nas mesmas condições.

13,4 Watios x 8 hours= 107,2 Wh

107,2 Wh / 1.000 = 0,1072 KWh

0,1072 KWh x 0,34 € = 0,036 €

0,036448 € x 365 days = 13,30 €

As we can see, the annual consumption of the LED wall light is minimal and the cost is just over one euro per month. A figure so low that you will hardly notice it on your electricity bill.

How much a solar LED spotlight consumes

Solar lamps directly collect the energy projected by the sun through the solar panel and transform it into light. As they do not need to be connected to the mains, the only cost you will have is the price of the product.

By choosing this type of luminaire you would be saving almost 60 euros a year on your electricity bill compared to an incandescent lamp and 13 euros if you compare it with an LED bulb.

This is undoubtedly the best option if you are looking to economise on consumption in your home.

Reduction of CO2 emissions into the atmosphere

Which one emits less carbon dioxide?

Once we have calculated the consumption of incandescent and LED lamps, it is time to see which of the two is more environmentally friendly.

To check the savings in carbon dioxide emissions we will take as a reference the sale of 30,000 luminaires. When we have the total power used for a whole year, we multiply the result by 0.40, which is the stipulated amount of CO2 emissions per kilogram of kilowatt hour.

Traditional lamps

60 W x 8 h = 0,48 KWh

0,48 KWh x 30.000 uds = 14.400 KWh

14.400 KWh x 365 days = 5.256.000 KWh

5.256.000 KWh x 0,40 = 2.102 tons CO2/year

LED bulbs

13,4 W x 8 h = 0,1072 KWh

0,10 KWh x 30.000 uds = 3.214 KWh

3.214 KWh x 365 days =1.173.000 KWh

1.173.000 KWh x 0,40 =470 tons CO2/year

According to the results, old lamps emit a total of 2,102 tonnes of CO2 per year, while LED products with solar panels emit 470 tonnes of carbon dioxide, i.e. four times less.

2.102

Tons of CO2 emissions

Incandescent luminaire

470

Tons of CO2 emissions

LED solar wall lights

To cope with such a large amount of CO2 emissions, let’s calculate the number of trees we should plant to compensate, knowing that 1 tonne of carbon dioxide gas is equivalent to 6 trees and each tree covers approximately 3 square metres.