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Author Topic: Renewable Energy  (Read 355731 times)

Sigmetnow

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Re: Renewable Energy
« Reply #1800 on: July 10, 2017, 08:35:37 PM »
People who say it cannot be done should not interrupt those who are doing it.

oren

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Re: Renewable Energy
« Reply #1801 on: July 10, 2017, 11:37:03 PM »
Wind turbine blades - then and now.
Thanks. Amazing.

NevB

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Re: Renewable Energy
« Reply #1802 on: July 11, 2017, 03:26:17 AM »
*Musk's guarantee is completion within 100 days from the grid interconnect agreement signing, not from the recently announced contract signing.

BTW To clarify your point about the timing

From the linked article

When will it be finished?

The government wants it finished by December 1 and Tesla and Neoen have committed to doing that. Ironically, the 100-day-or-it’s-free offer will not start until the connection agreement is sealed with the Australian Energy Market Operator. That will likely take a couple of months, so the December 1 deadline will fall before the 100-day deadline.

The interesting point is that the government plans on having this completed "before the 100-day deadline".

We are all very much looking forward to see what impact this has next summer on pricing and grid stability. If this performs as expected over summer this will no doubt be a game changer in the debate on renewables at least in Australia.

Sigmetnow

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Re: Renewable Energy
« Reply #1803 on: July 13, 2017, 09:44:55 PM »
New ‘Float and Submerge’ method utilised on UK offshore wind farm
This is the first time that this float and submerge method has been used on a wind farm project. The GBFs are held in place by gravity and this unique design reduces the need to use expensive marine equipment for the installation on the sea bed.”
https://www.renewableenergymagazine.com/wind/new-a-float-and-submergea--method-20170713/
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Sigmetnow

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Re: Renewable Energy
« Reply #1804 on: July 17, 2017, 04:11:02 PM »
U.S.:  EIA adds small-scale solar photovoltaic forecasts to its monthly Short-Term Energy Outlook
For the first time, EIA's Short-Term Energy Outlook (STEO), to be released later today, includes forecasts for small-scale solar photovoltaic (PV) capacity and electricity generation. EIA forecasts that total U.S. small-scale solar PV capacity will grow from 14.3 gigawatts (GW) at the end of April 2017 to 21.9 GW at the end of 2018. The forecast 2018 capacity includes 13.7 GW in the residential sector and 8.2 GW in the commercial and industrial sectors. Annual U.S. small-scale solar PV electricity generation is expected to grow from 19,467 gigawatthours (GWh) in 2016 to 25,400 GWh this year and 32,900 GWh in 2018....
https://www.eia.gov/todayinenergy/detail.php?id=31992#

Electrek says:
The main body of the US government watching energy production has made this decision because the volume of electricity produced is now significant enough to warrant the investment of their time. The 25,400GWh of small scale solar power is almost the same as three 1GW nuclear reactors (the average size) – and just under two nuclear facilities (multiple reactors at each facility). Even with the electric utilities attacking – this number is still growing hard – the EIA is predicting 50% growth from end of April 2017 through end of 2018 (equivalent to adding more than 1.5 nuclear reactors worth of electricity in about 1.5 years.
https://electrek.co/2017/07/17/egeb-climate-change-national-security-threat-miami-solar-maine-vote/
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numerobis

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Re: Renewable Energy
« Reply #1805 on: July 17, 2017, 04:56:12 PM »
Great -- now we can roll our eyes at EIA for being so impossibly conservative in its estimates of distributed solar year after year after year.

Sigmetnow

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Re: Renewable Energy
« Reply #1806 on: July 19, 2017, 07:28:33 PM »
TVA:  We are forecasting high power demand because of the hot temperatures and high humidity, especially towards the end of the week. Our Raccoon Mountain Pump Storage facility can be called into action to quickly deliver 1,600 megawatts to help meet demand during peak times. At night or during times of low demand, the giant generators go in reverse and pump water from Nickajack Reservoir up to the top of the mountain. When power demand spikes, water is released down a thousand foot shaft, turning the generators to create electricity. Photos of the mountain top reservoir full after pumping:

https://www.facebook.com/TVA/posts/10154521008017691

Details:  https://en.m.wikipedia.org/wiki/Raccoon_Mountain_Pumped-Storage_Plant
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Sigmetnow

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Re: Renewable Energy
« Reply #1807 on: July 19, 2017, 08:49:29 PM »
The Hawaiian Public Utilities Commission has accepted a plan filed by the state's largest utility Hawaiian Electric Co. (HECO), outlining how it will reach 100% renewable energy resources by 2040 — five years ahead of the state's goal.

In its statement, HECO said its utilities exceeded the state’s 2015 renewable energy target and indicated they are on track to exceed the state’s renewable energy targets in 2020, 2030 and 2040. The utility said it will attain a renewable portfolio standard of 48% by 2020 without imported liquefied natural gas — once again ahead of the mandated 30% goal.

The PSIP aims for the addition 360 MW of grid-scale solar, 157 MW of wind energy, and 115 MW from demand response programs.
http://www.utilitydive.com/news/third-times-the-charm-regulators-accept-heco-plan-for-100-renewables/447305/
People who say it cannot be done should not interrupt those who are doing it.

Sigmetnow

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Re: Renewable Energy
« Reply #1808 on: July 19, 2017, 08:55:36 PM »
People who say it cannot be done should not interrupt those who are doing it.

Bob Wallace

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Re: Renewable Energy
« Reply #1809 on: July 19, 2017, 09:05:29 PM »
The Hawaiian Public Utilities Commission has accepted a plan filed by the state's largest utility Hawaiian Electric Co. (HECO), outlining how it will reach 100% renewable energy resources by 2040 — five years ahead of the state's goal.

In its statement, HECO said its utilities exceeded the state’s 2015 renewable energy target and indicated they are on track to exceed the state’s renewable energy targets in 2020, 2030 and 2040. The utility said it will attain a renewable portfolio standard of 48% by 2020 without imported liquefied natural gas — once again ahead of the mandated 30% goal.

The PSIP aims for the addition 360 MW of grid-scale solar, 157 MW of wind energy, and 115 MW from demand response programs.
http://www.utilitydive.com/news/third-times-the-charm-regulators-accept-heco-plan-for-100-renewables/447305/


I expect we'll see a continuing stream of similar announcements over the coming years as the cost of RE and storage continues to fall, concern over climate change grows, and utilities understand how they can get rid of costly fossil fuels. 

numerobis

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Re: Renewable Energy
« Reply #1810 on: July 19, 2017, 09:40:54 PM »
It makes sense to see this first in remote equatorial locations. Even with low oil prices, diesel costs about $0.20/kWh of electricity just on its own, forget all other costs. And there's year-round about 12h of sun to compete with that. 50% reduction is pretty easy; batteries make 100% possible.

Remote polar is going to take a little longer, because the length of day gets short (or zero) part of the year.

Major population centres have been able to afford the fixed cost of large coal and natural gas plants which are much cheaper to run, so they'll take longer too.

Bob Wallace

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Re: Renewable Energy
« Reply #1811 on: July 19, 2017, 09:53:20 PM »
Coal and gas plants are not cheaper to run.  Their marginal costs are very much higher than wind and solar.  The marginal costs for CCNG and coal are higher than subsidized wind and soon unsubsidized wind should be cheaper.  The marginal cost for gas turbines is high.  Subsidized solar is cheaper.



This table was copied out of a leaked draft of the Bush/Perry study which is suppose to prove that the US should increase its use of fossil fuels.  The worker bees at the DOE aren't having any of that foolishness.

Remote polar seems to be doing pretty well with wind.  And geothermal, where available, is very attractive because not only can electricity be generated at a reasonable price (compared to imported fuel) the waste heat can be used for building and greenhouse heating. 

Plus, closer to the poles, there tends to be more usable hydro.

The first places to go ~100% renewable will be more remote places like Hawaii where importing fuel has made electricity (and vehicle fuel) very expensive.  Islands are going to make good laboratories for 100% grids due to their smaller scale and isolation from other grids. 

numerobis

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Re: Renewable Energy
« Reply #1812 on: July 19, 2017, 10:49:23 PM »
 ::)

Bob, a principal of communication: try to understand the other person's argument.

If their argument is beyond stupid, ask yourself: did you really understand it?

Bob Wallace

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Re: Renewable Energy
« Reply #1813 on: July 19, 2017, 11:07:22 PM »
I'm trying to understand.  But when people use words "creatively" it's hard to figure out what they are trying to convey.



Sigmetnow

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Re: Renewable Energy
« Reply #1814 on: July 22, 2017, 05:12:21 PM »
RE100, a group of companies with a commitment to transition to 100% renewable power, has reached its 100 members milestone.  The group has total revenue of US$2.5 trillion and operates in a diverse range of sectors – from Information Technology to automobile manufacturing.
https://www.theclimategroup.org/news/world-first-100-multinationals-target-100-renewable-electricity
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Bob Wallace

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Re: Renewable Energy
« Reply #1815 on: July 22, 2017, 08:04:52 PM »
“I can barely speak because I’m so angry,” said Supervisor Anthony Botelho. “This would have generated much-needed revenue. All you have to do is drive down there and see the conditions of our roads. We have minimal amounts of public safety. This was going to be a big thing, but the rug was pulled out from under us.


What's Republican Botelho so angry about?  A planned very large solar farm in his district has been downsized due to environmental concerns (critical habitat).

The original project, first proposed by a company called Solargen in 2009, would have consisted of 1.2 million solar panels producing 399 megawatts of electricity — enough to power about 100,000 homes.

After San Benito County — with a population of only 58,000 — approved it, three environmental groups sued, saying the county had not adequately protected the endangered giant kangaroo rat, blunt-nosed leopard lizard and San Joaquin kit fox, along with bird species such as the tri-colored blackbird that live in the ranchlands.

Under the settlement, Con Edison, which took full ownership last year, will reduce it again and build a 130-megawatt plant in Panoche Valley — providing enough power for about 32,500 homes. The project is about one-third the size of the original plan.

http://www.mercurynews.com/2017/07/21/giant-solar-project-reduced-due-to-environmentalists-opposition/


We've seen Republicans defend wind farms due to the tax revenues they produce and the jobs they create.  Now we may be seeing solar starting to enjoy support from the 'reds'. 

Good news for the planet....