Runs for about six years (as of January 2016) my self-experiment with reinstalling or step-by-step Change the lighting to LED technology. The share of conventional filament / halogen technology under one percent has now fallen and me there are several complete year utility bills for comparison – reason for a financial balance sheet.
LED lamps can save actually money – but not as much as some advertising wants to make you believe.
The most important advance: the previously positive byproduct of my conversion actionis manifested in this blog. After the category “LED lighting” was filled with around 630 long and even more short posts (stand January 2016), of which over 50 with basic information and considerations on the subject. Was that to “LED diaries” and personal reminder, partly can also other Umstellungswillige benefit.
The financial balance sheet of my transition on semiconductor light was, however, initially rather negative: first only very low savings in the energy bill were offset by the significant initial and replacement investments. This was to be expected but not otherwise. The payback period for LED lighting could be well more than five years still 2011 depending on the type of conversion and use. Here at TOPSCHOOLSOFLAW you can get more different models of home lighting decors.
More than 90 percent efficient
Full-bodied marketingclaims of manufacturers and dealers who promised 90 percent Stromsparpotenzial, long time without the additional use of intelligent control technology not met too. At the stand of the consumer-LED efficiency end of 2012, only about 80 percent compared with incandescent and halogen lamps were realistic. Now that has at lumens- per-watt-conditions significantly improved to 100 – often a 90-percent reduction is therefore quite realistic.
That doesn’t mean of course then that your electricity bill to this magnitude decreases. In an average German household with about 4000 kWh electricity per year makes the lighting according to the “Arbeitsgemeinschaft energy balances” just around 9 percent (as of 2011). The they fried large appliances like fridge / freezer, TV set, clothes dryer, washing machine and stove.
Electricity bill may fall to around 8%
If by conversion to LED technology in the lighting share dropped 90 percent, the total consumption can be reduced so at best by good 8 per cent. Example: My eco electricity gone out from the anti-nuclear movement “Elektrizitätswerke Schönau” (EWS) from January 2013 onwards, demanded a “job price” from 26.75 cents per kilowatt-hour (previously it was only 23,90).
Calculated on the average household would be 1,070 euros a year (plus the consumption-independent “base price” 82,80 euros). If 8 percent could be saved through energy-saving lighting, the supply price would reduce to 985 euros. The difference (photo left), which can easily replace 60-watt incandescent 90 and about 800 lumens of 85.60 euros now goes (October 2015), after all, for the purchase of six non-dimmable premium-LED “Bulbs” with color rendering index RA.
Rising electricity prices and “rebound” effect
But this assumes, that there really is the estimated savings. In reality it is through the constant electricity price rises namely blighted and still to reduce the so-called “Rebound” effect : if it’s cheaper to maintain, it is used like more often and more intensively. Who relies on LED technology, often builds more and varied sources of light, has a higher overall maximum brightness than before and can see the light on average slightly longer – this extra convenience costs almost nothing in relation to the old power guzzlers.
This effect is something mitigated through the use of intelligent control technology, in which for example with the help of motion sensors or smart phone apps individual lamps dimmed and – may be switched in conjunction with a “SmartHome”headquarters for all electricity consumers. This is still the absolute exception in German average households. There is no representative surveys or exact statistics about the actual savings for conversion to LED lighting in any case yet.
Year: 6% less electricity consumed
What is that now in my specific case – two-person household plus commercial use -? The first complete year actually showed a decrease in power consumption: just under six per cent were kWh by approx. 3400 to 3200. At the then price which corresponded to a saving of nearly 48 euros, the plan 2013, there were even good 53 euros. Since the price of electricity work but at the same time increased by more than 10 percent, the balance in the next annual billing for me was again negative. Up here it sounded still pretty depressing.
But we take up the counterclaim: the complete floor was 2013 traditionally illuminated, I would have had to pay kWh x 26.75 cents approximately 3500 = around 936 euros (plus basic price). With the LED lamps and luminaires, there were around 80 euros of less. And because no significant electricity price drop happened, continue to at least the same difference – surrendered each year. This still largely off costs for replacing blown bulbs came, because decent LED bulbs about keep 15 to 25 times longer than their electricity-guzzling predecessors.
Not only the financial matters
All these savings will probably never completely repeat the investment in LED lighting in my particular case ‘ in. Since various purchases had more hobby, experimentation andBlog-Testrequirements, they totaled to a rich four-digit amount. And who knows what in the future so all pretty new LED and OLED lights under the finger comes to me.
Strictly rational Haushaltsführende of course rather invest such high amounts in refrigerators, TVs, washing machines etc. invest with the EU energy label “A+++” – as the far greater savings potential lies dormant (Update: I did later, see below).
In addition to the financial aspect, but yet another matters to me: time accepted a reduction of 6 to 8 percent could be representative of all German households: then about 9 TWh should alone due to energy-saving lighting each year (1 trillion = 1 Tera) less electricity produced. About the output of a nuclear power plant – equivalent to having time just no breakdown. It’s also an argument, isn’t it?
Update 12.08.2013: The potential for savings with LED light is significantly larger than households in industry, trade and services (GHD). According to a new study commissioned by the Federal Ministry of Economics provides the lighting for more than 40% of total electricity consumptionon average in this area. The study is available in different versions here as downloads.
Update 24.01.2014: Even 2013 my power consumption has been reduced slightly – of around 3200 approx. 3160 kWh. This should be less in any case already widely used LED lighting. Here rather the exchange of a very old refrigerator by a considerably more efficient, as well as an older TV flat screen makes up with CCFL backlighting (approx. 200 watts) with a new led“Backlight” (82 Watt) in the course of the year noticeable.
After all, my payments for 2013 now 9.66 euros elektrizitätswerke Schönau have refunded me. Would be enough, for example, for something like that.
Update 03.03.2014: According to current statistics of the EU authority “Eurostat”, German households have 2013 in the cut paid 29 cents per kilowatt hour gross. About half of the price went for taxes, (EEG) levies and State duties.
Update 24.01.2015: And again (ECO) power saving: 2014’s were compared to 2013 approximately 10%, as evidenced by the current EMSBill (excerpt) :
The decline to about 2800 kilowatt-hours is again attributable to less of the “LEDifizierung” of the budget, but rather the use of more efficient large appliances. So, a new washing machine with the EU eco label A+++ and a heat pump dryers with A++ work for me since fall 2014. Probably, the consumption is reduced therefore 2015 again a piece. Until then I am about almost 100 euro reimbursement and the reduction of the monthly discount from 77 to €70.
Update 22.01.2016: Only slim 16 kWh less than 2014 shows the EMS billing for 2015:
As expected, should potential savings through the use of more efficient appliances and lighting largely exhausted be now – after all, about 17% year on year to 2011. Further cuts were possible – probably at the expense of comfort and convenience only by a fundamental change in our consumption behaviour.
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