-
Posts
23198 -
Joined
-
Days Won
186
Everything posted by SteamyTea
-
Well, this is just plainly naive, isn't it? What about all the infrastructure and energy required to run all the cloud functionality? That is a really good point and one I have not thought about. A very quick web search seems to show that 1 TB of data uses between 40 and 70 kWh/year. If each 'user' has 1 GB of data, that is around 0.055 kWh/user.year, or 6W. A Raspberry Pi, running headless uses about 3 W, with a bit of tuning, about a watt (what mine uses. An ESP**** about a tenth of that. To that figure, the energy usage of 'smart switches' needs to be added, regardless of if it is cloud or locally connected. Another quick web search gives a result of 1W for a Shelly Relay. So that could be another 10W for a few connected devises, or ~90 kWh/year. With a cloud connected service, the energy usage of the data transport has to be taken into account. So a local router, a share of the local telephone exchange (or 4/5G), 3 to five internet servers etc. So it is probably cheaper to use a local service, that is hard wired if possible, but not as good as a manual switch. Food for thought.
-
There is also 'stick' build.
-
Unvented hot water cylinder (electric)
SteamyTea replied to AidanGee93's topic in Boilers & Hot Water Tanks
My off peak times covers both circuits, so I run the washing machine during off peak hours as it is cheaper. When it is really cold, I run a fan heater in the morning to heat up rooms. But I am often up by 4AM. I have also put timers on my off peak circuits, this limits the time to the last 3 hours of the E7 window. This works fine for me as my storage heaters and DHW are charged closer to the times I need them. My life is easy as I live alone. -
Unvented hot water cylinder (electric)
SteamyTea replied to AidanGee93's topic in Boilers & Hot Water Tanks
You can usually hear an immersion heater work by the fizzing sound. So during the day, try keeping the kitchen switch off, and flick the 'Peak Supply' switch on, you should be able to heat some noise from the cylinder, or you can check the meter and see if you have an extra 3 kW load on. The kitchen switch may be just a secondary switch to make life easier i.e. not having to open a cupboard. Most of us on here like to keep water temperature as low as possible to save parasitic losses. I have a 200 lt DHW cylinder and store, via E7, water at 50°C. That is enough for a bath and a shower. Check the thermostats as the upper one (peak) should be higher temperature than the lower one (off peak). -
Oh how I miss these storage devices in every town.
-
Welcome I like an Indian. Pocahontas is buried in Gravesend, Kent.
-
CO2 is routinely injected into oil seams to help extract more, seems an expensive method. That is already happening.
-
37 gigatonnes of CO2 produced in 2022. Relying on plant growth is not going to cut it.
-
That has been know for at least 2 decades, why very little time is spent on it on Renewable Energy courses. It has been cheaper, for at least a decade and a half to just install wind and solar, which do not need CCS at the point of generation. In 2025, the UK's Per Capita CO2 emissions was 4.53t. World Average was 4.73t. https://ourworldindata.org/grapher/co-emissions-per-capita?tab=table
-
First thing to make sure is correct is your CIL entitlement.
-
There is you problem, it will cost you nothing on here to ask questions.
-
I suspect those words will come back to haunt you, especially if you buy into one of his price plans, buy some kit to take advantage of the ToU, then find he pulls the deal at very short notice.
-
If you prefer the better pictures that are on radio, then this was on earlier, it is about dynamic pricing in general, though does have someone from Octopus on it. Octopus spend a lot on this sort of soft selling. https://www.bbc.co.uk/sounds/play/m002qthh
-
As Starlink can be used directly from a phone now (|Direct to Cell), has anyone tried that? I know it is only available foe r a few 'select apps, but if it can compete with 5G on quality and price, that could be a good way to go in the near future.
-
Sunny here at moment, there is always some sunshine, somewhere. Why we need the EU Supergrid to get a move on. It is probably 60% done. The link to Morroco could make the biggest potential difference. Last year they produced 1.59 TWh. The UK did 19.32 TWh. So there is a massive opportunity for exports. I bet they don't get bogged down in planning for a decade.
-
What is the Green Parties and the Lib Dem's policy on these. They don't seem to get much radio coverage at the moment. A properly costed carbon tax is probably the best way to control fossil fuel/combustion usage.
-
Yes it is, but I think I read it is not part of the auction as it is considered 'base load'. I may be wrong though. If it is part of the auction clearing system, then, as you say, they will be buying it at almost twice the current price. Red Diesel was 77p/litre, so about 8p/kWh, yesterday. So it would be possible to generate electricity at about 25p/kWh, and, at the same time, get a kWh of thermal energy out of it. Not as cheap as a large PV array, but on a par with grid connected.
-
I have just spent a few minutes trying to find some interconnect price, only one I found was from 2021, was around 19euro/MWh. Current prices can been seen here. https://grid.iamkate.com/ No idea how good Kate's site is, but I think her father used to lecture in RE at Plymouth.
-
Isn't that more reason to deploy more, non thermal, generation capacity and storage. It is also amazing how fast a government can make financial changes, just look wheat they have done with student loans.
-
This is about energy prices, not council tax. If you want to get things changed, go into politics.
-
Average domestic household energy bills (~£1750) are still around 5% of average household earnings (~£36,700).
-
Correlation is not causation. Electricity prices are set by the highest priced, deliverable, energy, that is part of the half hour auctions. This is called the marginal price (I know you know all this). The high price is caused by this marginal pricing system. It would be much better if, for any given half hour period, that the mean auction price, based of weighted averages, was paid. That would get rid of those ridiculous price spikes, and reduce the potential losses at the lower end, I think. May try and model it later.
