That's the price of electricity in Hawaii which has much larger economies of scale then you do. Yes, solar would quickly pay for itself at those rates.
Solar is part of NI Electric's troubles. Decades back they over-invested in Diesels, more than they needed, and the capital costs are killing them. They "have to" run the Diesels, which means they often have to shed excess (solar) energy in resistors.
Norfolk Island has "too much" solar, now it wants storage | RenewEconomy
Not drawing power from solar panels does no harm. This is not like fossil generation where generators have to be loaded
Unfortunately, with all the solar panels hooked up to grid tie inverters, not dumping excess current sends the voltage up too high. New tesla batteries have recently reduced the reliance on those diesel generators.
in spain the bill is 73% not related to actual energy consumed. since 2019 we are allowed to simply connect PV to the grid. before that is was practically made impossiblle by regulatory impediments. connect fee is one of the highest in europe: 50 euro's/kw/yr single phase, 100 euro 3phase. until 2019 there were no public charging places for EV, as it was forbidden to sell electricity, only the monopolies were allowed to do that. and we have the most sun of EU. I had to go offgrid when the penalizations of "illegal PV" could go up to 60M (million) euro.
Thanks PRR. 
Rex, is it all diesel piston engines? I suppose for small scale that works. One day I drove by the power plant on south Maui and the giant roll-up door was open exposing a generator inside. It was a huge jet engine! Of course made by General Electric, but I had not imagined our power coming from a massive APU. Across the island was another plant that burned "begasse" which is sugar cane scrap. I don't know how that one worked - maybe boilers and steam.
Rex, is it all diesel piston engines? I suppose for small scale that works. One day I drove by the power plant on south Maui and the giant roll-up door was open exposing a generator inside. It was a huge jet engine! Of course made by General Electric, but I had not imagined our power coming from a massive APU. Across the island was another plant that burned "begasse" which is sugar cane scrap. I don't know how that one worked - maybe boilers and steam.
I know an island thinly joined to the mainland, and a growing summer population. One year they bulldozed a plot near the top of the island and set a truck-trailer box; next year another. One very hot day I came over that road and there was no doubt: jet engines! Peak-shaving. After a couple decades they did a massive upgrade (both capacity and reliability) of the lines onto the island, and took the generators away.
Having done that professionally I cringe at them being called jet engines: Aeroderivative and Heavy-Duty Gas Turbines | GE Power
Thanks PRR.
Rex, is it all diesel piston engines? I suppose for small scale that works. One day I drove by the power plant on south Maui and the giant roll-up door was open exposing a generator inside. It was a huge jet engine! Of course made by General Electric, but I had not imagined our power coming from a massive APU. Across the island was another plant that burned "begasse" which is sugar cane scrap. I don't know how that one worked - maybe boilers and steam.
Yep, there is a row of diesel piston engines. Recently some have been replaced. Prior to the installation of the tesla batteries, power was surprisingly unreliable and electrical equipment failure rates here are some of the worst i've seen. Likely due to a combination of poor mains regulation, warm salty climate and dusty/reactive soil.
Do we see, say 0,2 € / USD per kWh as a global mean?
Aha - google says:
The world average price is 0.139 U.S. Dollar per kWh for household users and 0.123 U.S. Dollar per kWh for business users. The prices for households are calculated using the average annual household electricity consumption per year and for businesses, we use 1,000,000 kWh consumption per year.
//
Aha - google says:
The world average price is 0.139 U.S. Dollar per kWh for household users and 0.123 U.S. Dollar per kWh for business users. The prices for households are calculated using the average annual household electricity consumption per year and for businesses, we use 1,000,000 kWh consumption per year.
//
I have never seen any of the Scottish Hydro works, but I know of the Welsh "Electric Mountain", though this is pumped storage and only for peaks.q
Ah a car charger would explain a lot.
Having just switched supplier, (the thread topic timing was in point)
Rate about £0.17/kWh, standing charge £0.095/day.
Combined gas and leccy fixed rate. The standing charge reduction alone, makes it easier to swallow the 13MWh/annum fuel bill...(3MWh/pa leccy)
I think it is as Rex says: these panels may be direct-connected, no master cut-out. While that is technically simple, the economics may border on politics and much resistance(?) to buying and (professionally!) installing cut-outs.
Though of course there must be a DC-AC box with at least a little brains. It "could" be told to cut-out at 249V on the line?
For more fun: the population of the island is declining? That puts a damper on infrastructure investment.
In Maine in 2017 the Swan’s Island electric coop sold-out to the mainland commercial power company. They were like 5th smallest in the US, and were facing a major line replacement. They have to pay-off 7 decades of debt and deferred work, then will fall under the general tariff same-as urban mainlanders. The commercial utility has changed name TWICE in this process, but will replace their creaky old undersea cable when the time comes. (Not an option at Norfolk.)
Just over the fields from where I live is a 2MW gas turbine which is used for peak balancing for the town of Reading. It was thought this would be the model for a lot of the UK, but the story goes that big energy didn't like the idea so it didn't catch on.
Theres many many CCGTs around many made by my employer. (Some will know that name)
I think the consensus is, that it is a waste to use clean burning gas, for electricity generation, rather than heating.
I think the consensus is, that it is a waste to use clean burning gas, for electricity generation, rather than heating.
Well there is currently 50% of the UK demand being met by CCGT. I meant the small ones that could be locally placed for peak levelling not the hundreds of MW one.
I don't know if the sub 5MW plants are CC. If they are do they reach efficient operation faster than the bigger ones? If you are only running 3-4 hours per day I assume fast run up to peak efficiency is a big driver?
Edit: I checked on SSE website and it's a 45MW station, so bigger than I remember being told. I now need to understand embedded generation.
I don't know if the sub 5MW plants are CC. If they are do they reach efficient operation faster than the bigger ones? If you are only running 3-4 hours per day I assume fast run up to peak efficiency is a big driver?
Edit: I checked on SSE website and it's a 45MW station, so bigger than I remember being told. I now need to understand embedded generation.
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Mine was $75.57 including the taxes and assorted charges for 520 kWh. This includes a $22.00 facility charge and Franchise tax 0f $2.91. So its a basic charge of .107430 per kWh and an adjustment of -.010000 for a cost before tax of .09743 @520= $50.66 plus a $22.00 facility charge plus tax $2.91
Now if thats confusing in Arizona is was about .12 a kWh before 3 PM and after 3 PM - 8:00 PM it raised to .19 @kHw with steps based on usage per 100's of kWh's. My cheapest bill was about $130 in the winter and up to $491.00 a month in the summer.
Now if thats confusing in Arizona is was about .12 a kWh before 3 PM and after 3 PM - 8:00 PM it raised to .19 @kHw with steps based on usage per 100's of kWh's. My cheapest bill was about $130 in the winter and up to $491.00 a month in the summer.
Bill, I have to be honest and say I do not know what the smaller gas plant generating capacity is, but I would assume most small scale CCGTs are about the 40MW mark.
There are lots of efforts going on at present to level the supply demand peaks, one of those efforts being to build more spinning reserve (synchronous condensors).
I think we have talked about it before....as perhaps a backward step it may seem, I believe it is a good move, in tandem with other efforts to Increase baseline capacity (nuclear or conventional fossil plants)
As far as embedded generation, micro gensets...
I nearly went to work for such a manufacturer, Bladon Jets.
Micro GTs up to about 10kW or so for embedded power generation in remote locations, for applications such as mobile telephone mast power in remote areas.
There are lots of efforts going on at present to level the supply demand peaks, one of those efforts being to build more spinning reserve (synchronous condensors).
I think we have talked about it before....as perhaps a backward step it may seem, I believe it is a good move, in tandem with other efforts to Increase baseline capacity (nuclear or conventional fossil plants)
As far as embedded generation, micro gensets...
I nearly went to work for such a manufacturer, Bladon Jets.
Micro GTs up to about 10kW or so for embedded power generation in remote locations, for applications such as mobile telephone mast power in remote areas.
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Electricity Price(cents/kWh) Weekdays Weekends/Holidays
Off-peak 8.5 7 pm - 7 am All Day
Mid-peak 11.9 11 am - 5 pm Not Applicable
On-peak 17.6 7-11 am, 5-7 pm Not Applicable
Last monthly bill:
Usage (kWh) Price ($) Percentage
On-peak 199.89 34.35 17
Mid-peak 197.91 23.24 16.61
Off-peak 793.54 67.45 66.61
Total 1191.34 125.0
Delivery 49.98
Regulatory 5.13
Total 180.16
Tax (13%) 23.42
Ontario Rebate -33.60
Total 169.98
Everything is in C$, multiply by 0.75 for USD. House is 2500 sq.ft. gas heating.
Goes as high as C$200/month with air conditioning 24/7
Off-peak 8.5 7 pm - 7 am All Day
Mid-peak 11.9 11 am - 5 pm Not Applicable
On-peak 17.6 7-11 am, 5-7 pm Not Applicable
Last monthly bill:
Usage (kWh) Price ($) Percentage
On-peak 199.89 34.35 17
Mid-peak 197.91 23.24 16.61
Off-peak 793.54 67.45 66.61
Total 1191.34 125.0
Delivery 49.98
Regulatory 5.13
Total 180.16
Tax (13%) 23.42
Ontario Rebate -33.60
Total 169.98
Everything is in C$, multiply by 0.75 for USD. House is 2500 sq.ft. gas heating.
Goes as high as C$200/month with air conditioning 24/7
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Here are copies of my gas and electric. We pay $3.25/mcf for natgas in Ohio, then there is a monthly service fee of $35, and delivery charges of $0.7041/mcf, and of course, taxes. An mcf is a million BTU's, divide by 35 for millions of cubic meters.
Will have a frightfully high electric bill for March as the gas furnace motor died so we were using space heaters!
Will have a frightfully high electric bill for March as the gas furnace motor died so we were using space heaters!
