Green Building Bible, Fourth Edition |
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment. PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book. |
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Posted By: WillInAberdeenGovt published a consultation on how much to do this with carrots (cheap charge) and how much with sticks (remotely switch off car chargers if the grid is about to collapse).
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/817107/electric-vehicle-smart-charging.pdf
Posted By: Mike1There's an interesting system in France under their equivalent scheme. The off-peak hours vary depending on where you live, spreading loads on the grid.
Most places seem to get contiguous hours during the night, but in some areas it is (or was) split between night and day.
Posted By: Cliff PopeThe pandemic has shown everyone the benefits of changed working hours. Pretty soon there won't be such a thing as the standard working day
Posted By: Cliff PopeIt's classic le Chatelier's principle - apply pressure to a system in equilibrium and the point of equilibrium will change so as to offset the effects of the pressure.
Posted By: WillInAberdeenEconomy 7 can't keep up with moving the off-peak times every day, unfortunately.
Posted By: WillInAberdeenI thought you were looking at heating your house at 3pm as required, on off-peak prices, rather than trying to heat it at 3am by an amount depending how sunny you forecast the next day to be?
Certainly blows the idea of 'storage heaters' out of the water. Maybe makes small holes in the ideas of 'thermal mass' 'thermal store' and 'DHW cylinder'. Why store up heat for the whole of the next 24h, if the peak period is only 3h duration?
Posted By: revorI have found the 1/2 hourly information very enlightening which I can graphically view next day
Posted By: revorOur decision to go battery was influenced by the fact we do suffer outages in bad weather and battery will supply limited loads during that period.
Posted By: tonySmart house or energy use can be done using WiFi plugs or controllers. Time of use metering info can come from web
Posted By: revor@ Jamster. The decision to have battery or not is a difficult one. There are many factors as to what will benefit be. I have just installed one at same time as a 6Kwp solar array and has been running now for 20 days. In that time have used about 1Kwh per 4 days from the grid. The grid usage is made up of spikes when a load comes on as the inverter needs time to decide how much solar, usually all of it, and how much battery to use. I rarely use more than 20% (2kw) of the battery capacity when solar not producing this is due that all appliances are A or A+ rated and all lighting LED. Today it is overcast and raining but are producing 0.5 Kw at 9:00 am but our background use is about 0.3 Kw and the rest is going to battery and if we do not use too much of it the battery will be 100% by end of day. So far is working well for us and hoping that having the large array will be of great advantage in winter. At moment we are generating far more than we need but can't export until get a MPAN export number, Our decision to go battery was influenced by the fact we do suffer outages in bad weather and battery will supply limited loads during that period. At moment we are using 20% of the battery capacity which will increase during winter and may not be enough but there should be the opportunity to charge it from the grid at cheap period if needed. The battery distributor calculation of the cost of the electricity it over the lifetime of the battery is 12p Kwh so basically you are paying in advance at this price and all should be good if no service problems and costs arise. The cost of our total solar investment will return about 4.5% which is better than any savings account and also is contributing to the reduced demand on the grid in a small way as well as supplying it (free at moment)
So factors will be size of array/size of battery, your appliances, lifestyle, willingness to change your routine to take advantage of sunny days etc.
Posted By: rhamduSurely if you work to the same budget every day, you will feel compelled to make savings on cold days, but almost encouraged to be extravagant during warmer weather?