Go Back   EcoModder Forum > Off-Topic > The Lounge
Register Now
 Register Now
 


Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 08-18-2015, 12:36 PM   #61 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,901

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
TEAM VW AUDI Group
90 day: 155.81 mpg (US)
Thanks: 3,466
Thanked 2,934 Times in 1,837 Posts
Denmark, and Iowa and Texas, and Costa Rica, and Spain, and many others.

__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 08-18-2015, 05:09 PM   #62 (permalink)
.........................
 
darcane's Avatar
 
Join Date: Aug 2009
Location: Buckley, WA
Posts: 1,586

Ninja 650R - '06 Kawasaki Ninja 650R
90 day: 52.02 mpg (US)

B*tch - '01 Honda Civic HX
Team Honda
90 day: 38.09 mpg (US)

Ms. Hyde - '06 Cadillac CTS V
Sports Cars
90 day: 16.93 mpg (US)
Thanks: 375
Thanked 481 Times in 311 Posts
Quote:
Originally Posted by ME_Andy View Post
I'm sure you know that California (22% renewable in 2014) and Hawaii (21%) are quickly following in Orkney's footsteps.
Orkney manages 100% renewable, primarily wind. But, I'd be willing to be that the cable connecting the island is regularly seeing large currents feeding the island and large currents from the island. Cut this cable and I bet the whole system falls apart.

The problem with wind and solar production is that you need to deal with it's variability. When it accounts for small percentages of your production, gas-fired plants can be used to pick up the slack. But over about 20% of production, you need some method of storing the electricity. Either by transferring it to another consumer (and transferring it back when the wind dies down) or in a battery of some sort. However, there are no viable batteries with sufficient capacity currently available.

Germany is a good example of this. They get about 28% of their power from renewables on a yearly basis, but have gotten as high as 78% of their consumption generated by renewables. The slack is picked up by turning on and off gas/coal/lignite plants and selling to Austria...
A New Record: Renewables Make Up 78% of Germany’s Power Consumption in an Afternoon : Greentech Media

Orkney is a very small community with an abundance of wind. This is not necessarily scalable to big cities.

That said...

My state has about 75% power generated by renewables.
__________________
2001 Civic HX Mods


Past Cars:
CTS-V

2003 Silverado Mods
  Reply With Quote
Old 08-19-2015, 07:06 PM   #63 (permalink)
Master EcoModder
 
IamIan's Avatar
 
Join Date: Dec 2010
Location: RI
Posts: 692
Thanks: 371
Thanked 227 Times in 140 Posts
Quote:
Originally Posted by darcane
Cut this cable and I bet the whole system falls apart.
Nope .. they have a 2 MW battery back up system part of the system there too.


Link
__________________
Life Long Energy Efficiency Enthusiast
2000 Honda Insight - LiFePO4 PHEV - Solar
2020 Inmotion V11 PEV ~30miles/kwh

Last edited by IamIan; 08-19-2015 at 07:54 PM..
  Reply With Quote
Old 08-19-2015, 08:39 PM   #64 (permalink)
.........................
 
darcane's Avatar
 
Join Date: Aug 2009
Location: Buckley, WA
Posts: 1,586

Ninja 650R - '06 Kawasaki Ninja 650R
90 day: 52.02 mpg (US)

B*tch - '01 Honda Civic HX
Team Honda
90 day: 38.09 mpg (US)

Ms. Hyde - '06 Cadillac CTS V
Sports Cars
90 day: 16.93 mpg (US)
Thanks: 375
Thanked 481 Times in 311 Posts
Quote:
Originally Posted by IamIan View Post
Nope .. they have a 2 MW battery back up system part of the system there too.


Link
2 MW is nowhere near enough, even for such a tiny community.

They mention the batteries in the video above. The video also mentions that one site has five turbines with a combined rating of 4.5MW and that there are 500 turbines on the island. These are pretty small turbines (some turbines are rated at 8MW each!) and he actually mentions the capacity factor (31500 hours producing 14000 MWh) so the average production is .44MW. Assuming they are all these small turbines, with similar average production, they are getting about 220MW of power from wind, with a peak capacity of 450MW.

A gusty day could fully charge those batteries in well less than a minute, a calm day would drain it just as quickly.
__________________
2001 Civic HX Mods


Past Cars:
CTS-V

2003 Silverado Mods
  Reply With Quote
Old 08-20-2015, 06:03 PM   #65 (permalink)
Master EcoModder
 
IamIan's Avatar
 
Join Date: Dec 2010
Location: RI
Posts: 692
Thanks: 371
Thanked 227 Times in 140 Posts
Quote:
Originally Posted by darcane View Post
nowhere near enough, even for such a tiny community.
I agree they should expand.


But , I also can see the benefit of spending the $ on RE harvest-production 1st.
__________________
Life Long Energy Efficiency Enthusiast
2000 Honda Insight - LiFePO4 PHEV - Solar
2020 Inmotion V11 PEV ~30miles/kwh
  Reply With Quote
Old 08-21-2015, 03:31 PM   #66 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,901

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
TEAM VW AUDI Group
90 day: 155.81 mpg (US)
Thanks: 3,466
Thanked 2,934 Times in 1,837 Posts
They also have a fair number of tidal electrical generation systems, and the tides are pretty consistent. And I think the wind pretty much always blows - at least somewhere.
__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote
Old 08-21-2015, 06:21 PM   #67 (permalink)
Master EcoModder
 
freebeard's Avatar
 
Join Date: Aug 2012
Location: northwest of normal
Posts: 23,879
Thanks: 6,749
Thanked 7,628 Times in 6,230 Posts
Moon Power!

The technology should be made out of Biorock with all fittings in Bronze.

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com