421–427 of 427 posts
With 3 hours of free power, a 15kW inverter and a 42kWh battery, I could almost do away with my solar panels and just survive of free grid power. I do have a 15kW solar panel set up, but I get very little from selling anything back to the grid.
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That isnt an point for california because distributed solar is an economically inefficient solution. It is only attractive in California due to a combination absurd electricity prices from State sanctioned monopolies and red tape preventing grid development.
Coal is economically inefficient compared with distributed solar. Nuclear is broadly on par in cost. The health impact costs of running existing coal plants in Texas are higher than the cost of installing new rooftop solar. That's ignoring carbon costs, which could be the same again. And that's at Texas install costs. While low for America they are double Australian costs mostly due to poor permitting regulations and…
California grid connections approval times are pushing 9 years, nearly doubling that of nearby western states. In comparison, Texas ERCOT operates on a connect and manage framework, which lets people buildout generation without stagegate approval, and then works out the interconnection issues in parallel or after the fact.
ERCOT process is 18 to 30 months.[3]
https://www.construction-physics.com/p/inside-the-interconne... https://www.interconnection.fyi/?market=CAISO https://www.ercot.com/files/docs/2024/10/30/0940-AM-ERCOT-In...
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It's got nothing to do with the hemisphere. Most likely the aircon is running less in winter so they don't use as much power. There is not much of a winter in the tropics.
It is winter right now.
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A 24 kWh cap per day seems very reasonable. Drawing 8 kW is quite a lot.
My home is in London UK and is relatively small and efficient, but 8kWh may be higher than our peak demand ever over more than 20 years in this house...
But also it is unlikely that we used 24kWh in any one day ever.
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Australia has that as well, the wholesale market changes price every 5 minutes, but it is a big ask for average consumers to follow that price and shift power usage in real time.
> it is a big ask for average consumers to follow that price and shift power usage in real time. I could imagine appliances that take that into account. e.g. an airconditioner that works harder during the cheaper periods. I wonder whether any retailers pass through the 5 minute pricing variation? Should be easy enough to monitor the price and adjust my AC via the infra red remote protocol.
For example, in an average sunny summer day, the midday price is usually close to free, and you can have you AC on for several hours. But the price starts rising from 3~4pm, but if you turn off the AC at this point, the room temperature would also start rising quickly at the hotest time in a day.
Also, in winter days (now), the price could be at a relatively high level for all day around almost every day in a week, but you still have to use it regardless.
It is the spring and autumn that most of day time has free electricity but it is also the time you need the least of power.
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For V2G, its a simple feature that enables a car to participate and make money in the energy ecosystem. Govts have to standardize it for cars, just like mandating usb-c.
It has been standardized here, and we see articles about it in the papers for a few years. Yet only 2 or 3 cars on the market implement it and don't even advertise it, apparently still in trials or pushed aside for sexier features. I was under the impression it was not simple, as it requires more electronics and complexity in the car.
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Wait, capped at 24 kWh a day? Our household consumed 8 kWh per day over the past week (gas cooking, no airco). So with a home battery that sinks 10 kWh during those 3 hours you have minimal energy costs?
Quite simply put this is what they ask you to do. To the point that the Australian government will heavily subsidise (30%) home battery installation. Remember Australia has over 10x the rollout of solar than china (per capita of course). It’s not hard to achieve this for any competent government. Bluntly China’s government is corrupt and inefficient (usa is even further behind china since their current government is…
this is misleading and wrong. At best it is a half true statement.
My total power bill has not decreased.
Solar electrity may be cheap to produce.
However if only generates for 4-5 houra day, generates non at night or bad weather. May generate non for several days in bad (cloudy weather ) So the supply of reneables (solar ) is un reliable. To make renewables (solar ) reliable , we need big (grid size) batterys. For the grid we need new transmission lines. Predicted to be 10,ooo KM for Austrlia. Cost of new transmission network, last estimate i saw was $40 Billion AU
The government mandated smart meters will allow peoples power supply to be turned off when the likely power shortages occur.