8 ms·

Wind turbines in Denmark reached record level in 2014

102 points by drkrab 11y ago

kaybe 11y ago
Extensive plots for Germany for comparison: http://www.ise.fraunhofer.de/en/downloads-englisch/pdf-files-englisch/data-nivc-/electricity-production-from-solar-and-wind-in-germany-2014.pdf http://www.ise.fraunhofer.de/en/downloads-englisch/pdf-files...
- adamtulinius 11y ago
  Does that report mention consumption anywhere? This article is about consumption, not production, so it doesn't really make sense to compare this report to the article.
  - kaybe 11y ago
    If you put it into the net, it has to be consumed somewhere. If there is too much production you have to take plants off the grid, and I think those are not included in the plots. There is an extensive planning process with weather forecasts and peak consumption predictions (break in the football world cup finals for example) to prevent sudden surprising changes. Different kind of power plants have different timelines that it takes to power them up and down. Small peaks in demand can be covered with gas plants since they are very fast to power up and down, but they are expensive. Coal plants take a day, nuclear - forget it-, and solar and wind can be predicted fairly well with the weather (there are plots about the success of predictions in the pdf), water is fairly stable and biomass behaves like gas. You really only want to produce what is consumed, and then there's export and import. There are charts for that as well.
martinald 11y ago
The big problem with this is oversupply of the grid. While Denmark has the ability to export to Norway, Sweden and Germany (amongst others) it's likely wind production will be at high levels in neighbouring countries. Germany often has a huge oversupply of energy, with electricity prices turning negative.
- _ph_ 11y ago
  This is just a temporary problem. One alway could just switch wind/solar plants off, if there were really no other way to deal with the electricity. The problem is not so much with oversupply but, that there is not enough oversupply for other uses of electricity to become economical interesting, i.e. large scale storage, building long-range networks, power to gas, etc.
- adamtulinius 11y ago
  It's not uncommon for the price of exported danish electricity to turn negative either.
- IkmoIkmo 11y ago
  That surprised me a little, Germany oversupplying because of wind. Wind is about 10% of electricity there, but then I looked up variability and it explains why: https://carboncounter.files.wordpress.com/2014/11/germany.jpeg https://carboncounter.files.wordpress.com/2014/11/germany.jp... Pretty crazy, it really calls for storage solutions doesn't it. Hell even if you had the same smooth wind every day, there'd be a huge demand/production discrepancy during sundown if enough wind is installed.
  - kaybe 11y ago
    If you run the calculations you can see that the more you have installed over capacity the less storage you need (since you can also fully provide if there is less wind). It's a trade-off, really.
    - IkmoIkmo 11y ago
      Of course, you don't need to run any numbers to see make the logical conclusion :-/ But wouldn't it be true to say that store is the cheaper alternative to installing excess capacity, the alternative with less local resistance (a political issue with both on and offshore wind), and the alternative with fewer maintenance issues versus e.g. offshore wind? Let me know if you have any numbers on that. I've checked some numbers myself. For example, even domestic storage (which includes things like an inverter already) like the Tesla powerwall costs $3500, and has 5.000 full depth cycles of lifetime, and a capacity of 7 kwh. Meaning purely for storing and using 1 kwh, it's about $10c. That's more than the cost of onshore wind (about 7c or so, differs per country). But we know that utility scale batteries can be much cheaper (I mean these Tesla powerwalls are quite similar to batteries that go into cars, their energy density is very high due to space constraints. If space and weight is not a concern you can build cheaper batteries), plus batteries as an industry are currently on a much steeper decline in cost annually than renewable generation technologies so going in to the future storage should become much more attractive, even as extra generation becomes more attractive, too. One example is Alevo, found an interesting post about it I'll quote here: > Alevo is claiming $100/kWh and 40,000 cycles. That works out to $0.003/cycle. Financed for 20 years at 5% would mean a $0.022 price per cycle over the first 20 years and then the cost of storage dropping to roughly zero for 89 more years. That's 2-3 cents per cycle. It'd be really hard to make the case for excess wind capacity over storage. Particularly because on some days wind generation is still near zero. The image I showed shows the top day generating 200x as much as the bottom day. To generate enough on the bottom day, you need a ridiculous amount of excess capacity generation to compensate, capacity that may be more expensive per kwh than storage, that overproduces the rest of the year (while still costing money, unlike storage which costs money per cycle, i.e. when used), and exacerbates the non-financial issues of wind (e.g. landscape changes that local people resist). It's looking like storage is going to be playing a huge role.
teh_klev 11y ago
Scotland does pretty well with regards to renewables with ~49.8% of energy consumption sourced from renewable sources (17.1k GWh wind/hydro out of 19k GWh total renewables). This puts wind and hydro at around 42%. https://www.scottishrenewables.com/sectors/renewables-in-numbers/#chart5 https://www.scottishrenewables.com/sectors/renewables-in-num... http://www.gov.scot/Resource/0048/00480365.pdf http://www.gov.scot/Resource/0048/00480365.pdf
- jacquesm 11y ago
  Beware of double-counting pumped storage.
  - teh_klev 11y ago
    I don't understand what you mean by that. Could you explain?
    - jacquesm 11y ago
      Scotland (and other countries besides) has a lot of 'pumped storage', lakes at a relatively high point that are fed from lakes at a lower point by running pumps that push the water from the lower lake to the higher one when energy is cheap and then back into the grid when it is more expensive (when there is a scarcity). The net effect of this is that electricity originally generated by nuclear plants and other fossil fuel plants gets 'converted' into (more expensive!) 'green' energy. It's a kind of white-washing for electrons. The price difference can be substantial more than making up for the cost of the pumping and subsequent re-generation. And of course it's the energy sold to the public that matters, not how it was originally generated so by double counting this energy it changes the balance considerably without there actually being more renewable energy to begin with.
      - teh_klev 11y ago
        Sure, but during a suitably windy night who's to say that a good number of those electrons used to refill pumped storage schemes aren't sourced from wind farms?
merpnderp 11y ago
But how much of this was overlapping power production with baseline fossil fuel production? Wind power often doesn't displace fossil fuels, it coincides with it, since wind is less predictable and coal plants take hours to ramp up/down. If 39% of Danes' electricity completely displaced the same amount of fossil fuels, my jaw would hit the floor.
- toomuchtodo 11y ago
  Not sure if its the same for the Danes, but in the US coal is being displaced by natural gas, which can be throttled quickly for grid demand response (and is cleaner, and releases drastically less CO2 per unit of power generated, and can be moved across the country quicker via pipeline vs trains).
  - crdoconnor 11y ago
    The cleanliness of natural gas is significantly overstated. Fracking is a dirty business.
- kaybe 11y ago
  The charts I linked below [1] have a comparison for 2013-2014 for Germany (eg page 8). I assume the situation in Denmark might be similar. There is also this statement: " Wind power achieved a new record of 29.7 GW in peak power production at Friday, 12th of December 2014. The daily wind energy production was 562 GWh. Both figures represent new records. The last records of 5th of December 2013 with a maximum power of 26.3 GW and a daily energy of 485 GWh have been exceeded by 13% resp. 16%. Photovoltaic power reached a maximum of 4.9 GW at the same day. The maximum total power from solar and wind was about 34 GW, which is well below the maximum of 14.4.2014 when a total production of 38.8 GW was reached. In order to provide sufficient space for the wind power in the grid, nuclear power plants have reduced their base load generation by about 10%, lignite plants by about 30%." [1] http://www.ise.fraunhofer.de/en/downloads-englisch/pdf-files-englisch/data-nivc-/electricity-production-from-solar-and-wind-in-germany-2014.pdf http://www.ise.fraunhofer.de/en/downloads-englisch/pdf-files...
- jacquesm 11y ago
Someone 11y ago
The text doesn't mention it, and it often is implied in these kinds of reports that this only is about domestic electricity use, so: does that include industrial use? If not, what percentage of total electricity use are we talking about? If or if not, what percentage of total power use are we talking about?
olorundaglory 11y ago
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bmarc 11y ago
And what's the average price for kwh in Denmark?
- bjelkeman-again 11y ago
  Something I wrote in an earlier thread: Denmark's electricity price is the highest in the EU "when you count in taxes and VAT, which go to produce other useful outcomes. However, Ireland together with the UK has the highest energy prices excluding taxes, closely followed by Cyprus and Spain. Interestingly enough, three of these are islands. It would be interesting to see these prices without subsidies, as the energy market is pretty global and these big differences must come from something else, I think." http://ec.europa.eu/eurostat/statistics-explained/index.php/File:Electricity_prices_for_household_consumers,_second_half_2014_(¹)_(EUR_per_kWh)_YB15.png http://ec.europa.eu/eurostat/statistics-explained/index.php/...
  - Someone 11y ago
    Looking at https://en.m.wikipedia.org/wiki/Synchronous_grid_of_Continental_Europe https://en.m.wikipedia.org/wiki/Synchronous_grid_of_Continen... and combining that with your remark, I would guess the electricity market isn't "pretty global". Yes, you can ship coal and oil about everywhere, but there seem to be economies of scale in larger networks, especially if your grid spans time zones (people switch on their stuff at different times in GMT), and Europe's does that. Of the four you mention, three aren't connected to that grid, and I would guess the link with Spain doesn't have sufficient capacity to even out peaks and troughs in Spanish demand (http://ses.jrc.ec.europa.eu/power-system-modelling http://ses.jrc.ec.europa.eu/power-system-modelling does show a fairly thin line between France and Spain, both large countries in population) The above is 100% educated GUESS. Corrections welcome.
- mewm 11y ago
  Around 22 cents excl. VAT. 27 cents incl. VAT
- kawsper 11y ago
  It is really different, some people have variable pricing that changes monthly, and some have fixed pricing. The cheapest fixed price I could find is $0.34 per kWh, on Elpristavlen[0] (lists of power prices) DONG Energy[1] states a price of $0.27 per kWh. Note that the price might not include power sources from renewable energy, and it excludes the subscription you pay to the power company. [0] https://www.elpristavlen.dk/ https://www.elpristavlen.dk/ [1] http://www.dongenergy-distribution.dk/erhverv/eldistribution/priser-gebyrer-og-betingelser http://www.dongenergy-distribution.dk/erhverv/eldistribution...
mangeletti 11y ago
I'm no electrical engineer (could be doing the math wrong), but I think there is a pretty glaring error in this page: The author mentions a 400 MW wind farm, and then says that correlates to 400,000 homes. Unless homes in Denmark use only 3% of what homes in the US use on average[1], that number should be somewhere closer to 15,000 homes. 1. http://www.eia.gov/tools/faqs/faq.cfm?id=97&t=3 http://www.eia.gov/tools/faqs/faq.cfm?id=97&t=3
- maxerickson 11y ago
  You have not accounted for the difference between power and energy. 909 kilowatt hours (energy) divided by a month (720 hours) is an average of about 1250 watts (power). So 400 megawatts might only power 300,000 US homes, but the scale is about right.
- tomarr 11y ago
  400 MW not 400 MWh. The power generated by the wind farm is enough to power 400,000 homes at peak. The link you provided talks about energy generated.
- sebnukem2 11y ago
  No, this is a correct figure. I think you are confusing power with energy. Also, the consumption of the average US home is a lot higher than in Europe.
- jsingleton 11y ago
  This would equate to a constant 1kW load per home which looks about right on the face of it. In fact that's probably a bit high.
- mangeletti 11y ago
  Ah, thanks for all the replies.
jp_uy 11y ago
http://www.pennenergy.com/articles/pennenergy/2014/06/renewable-energy-renewables-generate-84-percent-of-uruguay-s-energy.html http://www.pennenergy.com/articles/pennenergy/2014/06/renewa... https://news.vice.com/article/an-energy-revolution-is-underway-in-uruguay https://news.vice.com/article/an-energy-revolution-is-underw...
kbutler 11y ago
And the cost of electricity in Denmark is the highest in Europe: https://en.wikipedia.org/wiki/File:Electricity-prices-europe.jpg https://en.wikipedia.org/wiki/File:Electricity-prices-europe...
- mortenlarsen 11y ago
  That is mostly due to extreme taxes.
  - biehl 11y ago
    Yes. Here is a breakdown https://www.energifyn.dk/privat/elhandel/bag-om-elprisen https://www.energifyn.dk/privat/elhandel/bag-om-elprisen Orange is tax, grey is VAT, yellow also has some tax-like elements.
- kbutler 11y ago
  It's more complicated than a simple breakdown of "high price because of taxes". Part of it, not shown in that breakdown below, is the "Public Service Obligation (PSO)" tariff DKK 0.214/kwh (USD 0.031/kwh), primarily used to subsidize renewable energy (http://energinet.dk/EN/El/Engrosmarked/Tariffer-og-priser/Sider/default.aspx http://energinet.dk/EN/El/Engrosmarked/Tariffer-og-priser/Si...). Given the wikipedia cited total price of ~USD 0.40/kwh, and the breakdown linked below showing that the actual cost of the electricity is only 18% of that, 7.2 cents per kwh, a 3.1 cent per kwh renewable energy subsidy is pretty significant... Note that this subsidy has been going up with the increase in wind power. Q1 2014 price was DKK 0.19 - http://www.energinet.dk/EN/OM-OS/Nyheder/Sider/Energinet-dk-holder-sine-tariffer-i-ro-PSO-tarif-stiger.aspx http://www.energinet.dk/EN/OM-OS/Nyheder/Sider/Energinet-dk-...) """For example, some wind turbines are guaranteed a fixed price for the electricity they generate. The PSO tariff rises, as the electricity price is low at the moment and the difference between the amount the electricity consumers must pay for electricity and the amount some energy producers are guaranteed thus is more significant. Furthermore, Denmark will have more renewable energy. The objective is that 50% of all electricity must come from wind turbines by 2020. Finally, a new increased funding to electricity generated by biogas will enter into force - and must be paid out""" See also, http://www.energinet.dk/EN/OM-OS/Nyheder/Sider/Energinet-dk-holder-sine-tariffer-i-ro-PSO-tarif-stiger.aspx http://www.energinet.dk/EN/OM-OS/Nyheder/Sider/Energinet-dk-...
811639047892938 11y ago
This is great but seems unsurprising - It would be weird if wind turbines supplied less power than the year earlier.
palmeida 11y ago
In 2014 63% of Portugal's electricity needs were supplied by renewable sources https://en.wikipedia.org/wiki/Renewable_energy_in_Portugal https://en.wikipedia.org/wiki/Renewable_energy_in_Portugal

102 points by drkrab 11y ago

kaybe 11y ago

Extensive plots for Germany for comparison: http://www.ise.fraunhofer.de/en/downloads-englisch/pdf-files-englisch/data-nivc-/electricity-production-from-solar-and-wind-in-germany-2014.pdf http://www.ise.fraunhofer.de/en/downloads-englisch/pdf-files...

adamtulinius 11y ago
Does that report mention consumption anywhere? This article is about consumption, not production, so it doesn't really make sense to compare this report to the article.
- kaybe 11y ago
  If you put it into the net, it has to be consumed somewhere. If there is too much production you have to take plants off the grid, and I think those are not included in the plots. There is an extensive planning process with weather forecasts and peak consumption predictions (break in the football world cup finals for example) to prevent sudden surprising changes. Different kind of power plants have different timelines that it takes to power them up and down. Small peaks in demand can be covered with gas plants since they are very fast to power up and down, but they are expensive. Coal plants take a day, nuclear - forget it-, and solar and wind can be predicted fairly well with the weather (there are plots about the success of predictions in the pdf), water is fairly stable and biomass behaves like gas. You really only want to produce what is consumed, and then there's export and import. There are charts for that as well.

martinald 11y ago

The big problem with this is oversupply of the grid. While Denmark has the ability to export to Norway, Sweden and Germany (amongst others) it's likely wind production will be at high levels in neighbouring countries. Germany often has a huge oversupply of energy, with electricity prices turning negative.

_ph_ 11y ago
This is just a temporary problem. One alway could just switch wind/solar plants off, if there were really no other way to deal with the electricity. The problem is not so much with oversupply but, that there is not enough oversupply for other uses of electricity to become economical interesting, i.e. large scale storage, building long-range networks, power to gas, etc.
adamtulinius 11y ago
It's not uncommon for the price of exported danish electricity to turn negative either.
IkmoIkmo 11y ago
That surprised me a little, Germany oversupplying because of wind. Wind is about 10% of electricity there, but then I looked up variability and it explains why: https://carboncounter.files.wordpress.com/2014/11/germany.jpeg https://carboncounter.files.wordpress.com/2014/11/germany.jp... Pretty crazy, it really calls for storage solutions doesn't it. Hell even if you had the same smooth wind every day, there'd be a huge demand/production discrepancy during sundown if enough wind is installed.
- kaybe 11y ago
  If you run the calculations you can see that the more you have installed over capacity the less storage you need (since you can also fully provide if there is less wind). It's a trade-off, really.
  - IkmoIkmo 11y ago
    Of course, you don't need to run any numbers to see make the logical conclusion :-/ But wouldn't it be true to say that store is the cheaper alternative to installing excess capacity, the alternative with less local resistance (a political issue with both on and offshore wind), and the alternative with fewer maintenance issues versus e.g. offshore wind? Let me know if you have any numbers on that. I've checked some numbers myself. For example, even domestic storage (which includes things like an inverter already) like the Tesla powerwall costs $3500, and has 5.000 full depth cycles of lifetime, and a capacity of 7 kwh. Meaning purely for storing and using 1 kwh, it's about $10c. That's more than the cost of onshore wind (about 7c or so, differs per country). But we know that utility scale batteries can be much cheaper (I mean these Tesla powerwalls are quite similar to batteries that go into cars, their energy density is very high due to space constraints. If space and weight is not a concern you can build cheaper batteries), plus batteries as an industry are currently on a much steeper decline in cost annually than renewable generation technologies so going in to the future storage should become much more attractive, even as extra generation becomes more attractive, too. One example is Alevo, found an interesting post about it I'll quote here: > Alevo is claiming $100/kWh and 40,000 cycles. That works out to $0.003/cycle. Financed for 20 years at 5% would mean a $0.022 price per cycle over the first 20 years and then the cost of storage dropping to roughly zero for 89 more years. That's 2-3 cents per cycle. It'd be really hard to make the case for excess wind capacity over storage. Particularly because on some days wind generation is still near zero. The image I showed shows the top day generating 200x as much as the bottom day. To generate enough on the bottom day, you need a ridiculous amount of excess capacity generation to compensate, capacity that may be more expensive per kwh than storage, that overproduces the rest of the year (while still costing money, unlike storage which costs money per cycle, i.e. when used), and exacerbates the non-financial issues of wind (e.g. landscape changes that local people resist). It's looking like storage is going to be playing a huge role.

teh_klev 11y ago

Scotland does pretty well with regards to renewables with ~49.8% of energy consumption sourced from renewable sources (17.1k GWh wind/hydro out of 19k GWh total renewables). This puts wind and hydro at around 42%. https://www.scottishrenewables.com/sectors/renewables-in-numbers/#chart5 https://www.scottishrenewables.com/sectors/renewables-in-num... http://www.gov.scot/Resource/0048/00480365.pdf http://www.gov.scot/Resource/0048/00480365.pdf

jacquesm 11y ago
Beware of double-counting pumped storage.
- teh_klev 11y ago
  I don't understand what you mean by that. Could you explain?
  - jacquesm 11y ago
    Scotland (and other countries besides) has a lot of 'pumped storage', lakes at a relatively high point that are fed from lakes at a lower point by running pumps that push the water from the lower lake to the higher one when energy is cheap and then back into the grid when it is more expensive (when there is a scarcity). The net effect of this is that electricity originally generated by nuclear plants and other fossil fuel plants gets 'converted' into (more expensive!) 'green' energy. It's a kind of white-washing for electrons. The price difference can be substantial more than making up for the cost of the pumping and subsequent re-generation. And of course it's the energy sold to the public that matters, not how it was originally generated so by double counting this energy it changes the balance considerably without there actually being more renewable energy to begin with.
    - teh_klev 11y ago
      Sure, but during a suitably windy night who's to say that a good number of those electrons used to refill pumped storage schemes aren't sourced from wind farms?

merpnderp 11y ago

But how much of this was overlapping power production with baseline fossil fuel production? Wind power often doesn't displace fossil fuels, it coincides with it, since wind is less predictable and coal plants take hours to ramp up/down. If 39% of Danes' electricity completely displaced the same amount of fossil fuels, my jaw would hit the floor.

toomuchtodo 11y ago
Not sure if its the same for the Danes, but in the US coal is being displaced by natural gas, which can be throttled quickly for grid demand response (and is cleaner, and releases drastically less CO2 per unit of power generated, and can be moved across the country quicker via pipeline vs trains).
- crdoconnor 11y ago
  The cleanliness of natural gas is significantly overstated. Fracking is a dirty business.
kaybe 11y ago
The charts I linked below [1] have a comparison for 2013-2014 for Germany (eg page 8). I assume the situation in Denmark might be similar. There is also this statement: " Wind power achieved a new record of 29.7 GW in peak power production at Friday, 12th of December 2014. The daily wind energy production was 562 GWh. Both figures represent new records. The last records of 5th of December 2013 with a maximum power of 26.3 GW and a daily energy of 485 GWh have been exceeded by 13% resp. 16%. Photovoltaic power reached a maximum of 4.9 GW at the same day. The maximum total power from solar and wind was about 34 GW, which is well below the maximum of 14.4.2014 when a total production of 38.8 GW was reached. In order to provide sufficient space for the wind power in the grid, nuclear power plants have reduced their base load generation by about 10%, lignite plants by about 30%." [1] http://www.ise.fraunhofer.de/en/downloads-englisch/pdf-files-englisch/data-nivc-/electricity-production-from-solar-and-wind-in-germany-2014.pdf http://www.ise.fraunhofer.de/en/downloads-englisch/pdf-files...
jacquesm 11y ago

Someone 11y ago

The text doesn't mention it, and it often is implied in these kinds of reports that this only is about domestic electricity use, so: does that include industrial use? If not, what percentage of total electricity use are we talking about? If or if not, what percentage of total power use are we talking about?

olorundaglory 11y ago

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bmarc 11y ago

And what's the average price for kwh in Denmark?

bjelkeman-again 11y ago
Something I wrote in an earlier thread: Denmark's electricity price is the highest in the EU "when you count in taxes and VAT, which go to produce other useful outcomes. However, Ireland together with the UK has the highest energy prices excluding taxes, closely followed by Cyprus and Spain. Interestingly enough, three of these are islands. It would be interesting to see these prices without subsidies, as the energy market is pretty global and these big differences must come from something else, I think." http://ec.europa.eu/eurostat/statistics-explained/index.php/File:Electricity_prices_for_household_consumers,_second_half_2014_(¹)_(EUR_per_kWh)_YB15.png http://ec.europa.eu/eurostat/statistics-explained/index.php/...
- Someone 11y ago
  Looking at https://en.m.wikipedia.org/wiki/Synchronous_grid_of_Continental_Europe https://en.m.wikipedia.org/wiki/Synchronous_grid_of_Continen... and combining that with your remark, I would guess the electricity market isn't "pretty global". Yes, you can ship coal and oil about everywhere, but there seem to be economies of scale in larger networks, especially if your grid spans time zones (people switch on their stuff at different times in GMT), and Europe's does that. Of the four you mention, three aren't connected to that grid, and I would guess the link with Spain doesn't have sufficient capacity to even out peaks and troughs in Spanish demand (http://ses.jrc.ec.europa.eu/power-system-modelling http://ses.jrc.ec.europa.eu/power-system-modelling does show a fairly thin line between France and Spain, both large countries in population) The above is 100% educated GUESS. Corrections welcome.
mewm 11y ago
Around 22 cents excl. VAT. 27 cents incl. VAT
kawsper 11y ago
It is really different, some people have variable pricing that changes monthly, and some have fixed pricing. The cheapest fixed price I could find is $0.34 per kWh, on Elpristavlen[0] (lists of power prices) DONG Energy[1] states a price of $0.27 per kWh. Note that the price might not include power sources from renewable energy, and it excludes the subscription you pay to the power company. [0] https://www.elpristavlen.dk/ https://www.elpristavlen.dk/ [1] http://www.dongenergy-distribution.dk/erhverv/eldistribution/priser-gebyrer-og-betingelser http://www.dongenergy-distribution.dk/erhverv/eldistribution...

mangeletti 11y ago

I'm no electrical engineer (could be doing the math wrong), but I think there is a pretty glaring error in this page: The author mentions a 400 MW wind farm, and then says that correlates to 400,000 homes. Unless homes in Denmark use only 3% of what homes in the US use on average[1], that number should be somewhere closer to 15,000 homes. 1. http://www.eia.gov/tools/faqs/faq.cfm?id=97&t=3 http://www.eia.gov/tools/faqs/faq.cfm?id=97&t=3

maxerickson 11y ago
You have not accounted for the difference between power and energy. 909 kilowatt hours (energy) divided by a month (720 hours) is an average of about 1250 watts (power). So 400 megawatts might only power 300,000 US homes, but the scale is about right.
tomarr 11y ago
400 MW not 400 MWh. The power generated by the wind farm is enough to power 400,000 homes at peak. The link you provided talks about energy generated.
sebnukem2 11y ago
No, this is a correct figure. I think you are confusing power with energy. Also, the consumption of the average US home is a lot higher than in Europe.
jsingleton 11y ago
This would equate to a constant 1kW load per home which looks about right on the face of it. In fact that's probably a bit high.
mangeletti 11y ago
Ah, thanks for all the replies.

jp_uy 11y ago

http://www.pennenergy.com/articles/pennenergy/2014/06/renewable-energy-renewables-generate-84-percent-of-uruguay-s-energy.html http://www.pennenergy.com/articles/pennenergy/2014/06/renewa... https://news.vice.com/article/an-energy-revolution-is-underway-in-uruguay https://news.vice.com/article/an-energy-revolution-is-underw...

kbutler 11y ago

And the cost of electricity in Denmark is the highest in Europe: https://en.wikipedia.org/wiki/File:Electricity-prices-europe.jpg https://en.wikipedia.org/wiki/File:Electricity-prices-europe...

mortenlarsen 11y ago
That is mostly due to extreme taxes.
- biehl 11y ago
  Yes. Here is a breakdown https://www.energifyn.dk/privat/elhandel/bag-om-elprisen https://www.energifyn.dk/privat/elhandel/bag-om-elprisen Orange is tax, grey is VAT, yellow also has some tax-like elements.
kbutler 11y ago
It's more complicated than a simple breakdown of "high price because of taxes". Part of it, not shown in that breakdown below, is the "Public Service Obligation (PSO)" tariff DKK 0.214/kwh (USD 0.031/kwh), primarily used to subsidize renewable energy (http://energinet.dk/EN/El/Engrosmarked/Tariffer-og-priser/Sider/default.aspx http://energinet.dk/EN/El/Engrosmarked/Tariffer-og-priser/Si...). Given the wikipedia cited total price of ~USD 0.40/kwh, and the breakdown linked below showing that the actual cost of the electricity is only 18% of that, 7.2 cents per kwh, a 3.1 cent per kwh renewable energy subsidy is pretty significant... Note that this subsidy has been going up with the increase in wind power. Q1 2014 price was DKK 0.19 - http://www.energinet.dk/EN/OM-OS/Nyheder/Sider/Energinet-dk-holder-sine-tariffer-i-ro-PSO-tarif-stiger.aspx http://www.energinet.dk/EN/OM-OS/Nyheder/Sider/Energinet-dk-...) """For example, some wind turbines are guaranteed a fixed price for the electricity they generate. The PSO tariff rises, as the electricity price is low at the moment and the difference between the amount the electricity consumers must pay for electricity and the amount some energy producers are guaranteed thus is more significant. Furthermore, Denmark will have more renewable energy. The objective is that 50% of all electricity must come from wind turbines by 2020. Finally, a new increased funding to electricity generated by biogas will enter into force - and must be paid out""" See also, http://www.energinet.dk/EN/OM-OS/Nyheder/Sider/Energinet-dk-holder-sine-tariffer-i-ro-PSO-tarif-stiger.aspx http://www.energinet.dk/EN/OM-OS/Nyheder/Sider/Energinet-dk-...

811639047892938 11y ago

This is great but seems unsurprising - It would be weird if wind turbines supplied less power than the year earlier.

palmeida 11y ago

In 2014 63% of Portugal's electricity needs were supplied by renewable sources https://en.wikipedia.org/wiki/Renewable_energy_in_Portugal https://en.wikipedia.org/wiki/Renewable_energy_in_Portugal