852
That massive spike of 50c/kWh at the left looks tiny compared to today even though that's already insanely expensive
this post was submitted on 05 Jan 2024
852 points (98.6% liked)
Mildly Infuriating
35578 readers
351 users here now
Home to all things "Mildly Infuriating" Not infuriating, not enraging. Mildly Infuriating. All posts should reflect that.
I want my day mildly ruined, not completely ruined. Please remember to refrain from reposting old content. If you post a post from reddit it is good practice to include a link and credit the OP. I'm not about stealing content!
It's just good to get something in this website for casual viewing whilst refreshing original content is added overtime.
Rules:
1. Be Respectful
Refrain from using harmful language pertaining to a protected characteristic: e.g. race, gender, sexuality, disability or religion.
Refrain from being argumentative when responding or commenting to posts/replies. Personal attacks are not welcome here.
...
2. No Illegal Content
Content that violates the law. Any post/comment found to be in breach of common law will be removed and given to the authorities if required.
That means: -No promoting violence/threats against any individuals
-No CSA content or Revenge Porn
-No sharing private/personal information (Doxxing)
...
3. No Spam
Posting the same post, no matter the intent is against the rules.
-If you have posted content, please refrain from re-posting said content within this community.
-Do not spam posts with intent to harass, annoy, bully, advertise, scam or harm this community.
-No posting Scams/Advertisements/Phishing Links/IP Grabbers
-No Bots, Bots will be banned from the community.
...
4. No Porn/Explicit
Content
-Do not post explicit content. Lemmy.World is not the instance for NSFW content.
-Do not post Gore or Shock Content.
...
5. No Enciting Harassment,
Brigading, Doxxing or Witch Hunts
-Do not Brigade other Communities
-No calls to action against other communities/users within Lemmy or outside of Lemmy.
-No Witch Hunts against users/communities.
-No content that harasses members within or outside of the community.
...
6. NSFW should be behind NSFW tags.
-Content that is NSFW should be behind NSFW tags.
-Content that might be distressing should be kept behind NSFW tags.
...
7. Content should match the theme of this community.
-Content should be Mildly infuriating.
-At this time we permit content that is infuriating until an infuriating community is made available.
...
8. Reposting of Reddit content is permitted, try to credit the OC.
-Please consider crediting the OC when reposting content. A name of the user or a link to the original post is sufficient.
...
...
Also check out:
Partnered Communities:
Reach out to LillianVS for inclusion on the sidebar.
All communities included on the sidebar are to be made in compliance with the instance rules.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
That's a perfectly normal number for any home that isn't very new and perfectly insulated.
My 37sqm appartment needs approximately 5000 kWh in natural gas per year, 876 kWh last December, so 28 kWh per day on average. The building is admittedly old and not perfectly insulated but it's also not a log cabin out in the open in Finland, but instead a flat enclosed within 3 other flats in the middle of cosy, never below -8C Germany.
21 kWh in a log cabin in Finnland actually seemed pretty low to me. It's sort of obvious OP is using a heat pump and the cabin must really be absolutely tiny.
Why are you measuring natural gas in kWh? How do you even measure that as such?
It's an easy conversion - 1 kWh is equal to 3412 Btus. In Germany, both electricity and natural gas are charged in kWh. I know a fair bit about energy measurement if you have any questions.
This is fascinating to me. How does it factor efficiency, since gas needs to be burned?
Great question. When it comes to utility billing, efficiency doesn't factor at all. Just like with electric billing, the utility company gives zero shits about what you do with your energy. They just bill you for everything you use.
Utility companies keep track of the volume used in cubic meters and convert it to kWh using the formula...
Volume (in cubic meters) • Calorific value (usually around 37-42) • 1.02264 (correction factor) ÷ 3.6 (conversion factor to kWh) = kWh
The calorific value accounts for the varying energy density of natural gas caused by its inconsistent composition. The correction factor accounts for the effects of the average temperature and pressure at the property on gas volume measurement. 1.02264 is standard for most locations but would be different if the location is extreme, like the high elevation of Machu Picchu.
What sucks about gas heating is some of the heat energy released leaves with the exhaust. The heating efficiency varies depending on the unit but is generally 90-95% for newer units but as low as 50% for older units. While 90-95% doesn't seem bad, electric heat pumps achieve efficiencies that exceed 100%, even as high as 300+%.
To turn gas to electricity assume 50% efficiency. 2MWh of gas = 1MWh of electricity.
So given that most gas furnaces (at least in the US) operate at 90-95% efficiency, does that mean 20 kWh of resistive electric heat (as measured on the bill) provides similar heat to ~11 kWh of gas?
It would equal about 22kWh of gas, since gas isn't 100% efficient like electric heat is.
Ah. 50% efficency to turn gas into electricity.
If you are just making heat then burning gas directly is much better.
Energy is energy regardless of what unit is used to show it. so 3412 BTUs always equals 1kWh.
You do an efficiency calculation after, average gas blower is about 90% so you'd end up with 3070 BTUs or 0.9kWh of heat energy.
It does not factor efficiency at all.
The bill does not care about efficiency.
Very common in countries that use the metric system (ie literally everywhere except the USA). It's measured either in kWh or in m^3
Cubic meters (or another similar measure of volume) is what I'd expect. It's the conversion to an unrelated and theoretical (since it's not actually being converted to electricity) unit that confuses me. I presume it's to make it easier to compare electric vs gas heat, but the variable efficiency of burning gas and the existence of heat pumps ruin that.
kWh is a unit of energy. Regardless of whether it is in the form of electricity or from burning fuel. So it is actually very related, and much more useful than a measurement of volume I'd argue. The measurement is of course done in m³, but then a conversion factor based on several factors is used to convert to an actually useful unit.
A m³ of gas really could be anything depending on pressure, temperature and constituents.
Yeah, even firewood can be (and not uncommonly is) measured in kWh
(Brace yourself for Much 'Merica) Several gas utilities I've had in the USA measure natural gas CCF, which is 100 cubic feet (at some standard temperature/pressure), which happens to be almost exactly the same as a Therm, or 100,000 BTU.
My meter measures it in m^3^ and my supplier, knowing the exact caloric value of the product they're selling, tells me in kWh on my bill.
edit: m^3^ of course not ^2^ lol