Lanai's la ola solar farm is dedicated - Business

Isle developer Castle & Cooke Inc. formally completed construction of the largest single-site solar farm in the state yesterday, although it has been operational since mid-December. Some facts, from Castle & ... Full Story
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realmerv

Mililani, HI

#1 Jan 7, 2009
The legislature should be proactive and allow solar farms to be developed on ag lands with minimal delay. Solar farms could be constructed on Maui and the Big Island where land is plentiful.
willie

Farmington, MI

#2 Jan 7, 2009
realmerv wrote:
The legislature should be proactive and allow solar farms to be developed on ag lands with minimal delay. Solar farms could be constructed on Maui and the Big Island where land is plentiful.
It is ag land, this is a solar farm. Seems like a no brainer to me, they are raising electricty instead of carrots. Of course the politicians want their share so I don't see the process changing that the builders need to go begging for a change. Pity.
syzygy

Kapolei, HI

#3 Jan 7, 2009
"Production: Currently up to 500 kilowatts of energy; expected to rise to 1.2 megawatts upon the installation of three battery containers by June..."

There is a problem in this statement as a result of equating watts (power) to energy (watt-hours). The power comes from the solar panels, not the batteries. 500 kW of generating capacity will not somehow magically increase to 1.2 MW with the installation of batteries. The energy available during the evening will increase using batteries, certainly.
willie

Farmington, MI

#4 Jan 7, 2009
syzygy wrote:
"Production: Currently up to 500 kilowatts of energy; expected to rise to 1.2 megawatts upon the installation of three battery containers by June..."
There is a problem in this statement as a result of equating watts (power) to energy (watt-hours). The power comes from the solar panels, not the batteries. 500 kW of generating capacity will not somehow magically increase to 1.2 MW with the installation of batteries. The energy available during the evening will increase using batteries, certainly.
There is no problem with the statement. Solar panels only produce direct current and as such can not be directly attached to the grid. Generally they are hooked to batteries and the batteries run regular alternating current generators. The batteries also insure power after the sun goes down. I am sure currently they have only enough battery capacity to generate 500KW and are adding enough to go to 1.2MW. You are right, there is no magic involved just the addition of more storage for the energy created by the panels.
TomCody

Fort Benning, GA

#5 Jan 7, 2009
willie wrote:
<quoted text>
There is no problem with the statement. Solar panels only produce direct current and as such can not be directly attached to the grid. Generally they are hooked to batteries and the batteries run regular alternating current generators. The batteries also insure power after the sun goes down. I am sure currently they have only enough battery capacity to generate 500KW and are adding enough to go to 1.2MW. You are right, there is no magic involved just the addition of more storage for the energy created by the panels.
Ever heard of inverters? The batteries don't run generators.
syzygy

Kapolei, HI

#6 Jan 7, 2009
"There is no problem with the statement."

Kilowatts of ENERGY?

Mento

Honolulu, HI

#7 Jan 7, 2009
Sounds great. Let's see ...
5000 barrels of oil saved each year.
A barrel of oil costs around $50 right now.
That's a savings of 5000 x $50 =$250,000.
The solar panels only cost $19 million.
I wonder how much they are planning to charge for each kilowatt sold?
willie

Farmington, MI

#8 Jan 7, 2009
"A barrel of oil costs around $50 right now."

I am glad you said right now. A few months ago it was $150 and at some point there just won't be any...the sun will burn out in 3 or 4 billion years too...lol
Manoa

Honolulu, HI

#9 Jan 7, 2009
We get the point-- net usable energy available on the grid measured over a particular time period (say a 24 hour period) increases with batteries vs. just the panels themselves-- the statement is not really false if you take the idea into account.
The direct current would need to be converted and an inverter should do that more efficiently than a generator which would entail mechanical and heat energy loss, vs. an invertor which will have electrical resistance and heat losses.
willie

Farmington, MI

#10 Jan 7, 2009
TomCody wrote:
<quoted text>
Ever heard of inverters? The batteries don't run generators.
Inverters, generators..whatever, they can still only run X number on X amount of battery power true? Add more battery capacity you can add more generators or inverters assuming you have enough oomph from the solar panels to charge the batteries.
William

San Diego, CA

#11 Jan 7, 2009
A start of something great for the people and kudos to the developer. Imua Hawaii!!
Mento

Honolulu, HI

#12 Jan 7, 2009
willie wrote:
I am glad you said right now. A few months ago it was $150 and at some point there just won't be any...the sun will burn out in 3 or 4 billion years too...lol
We need nuke power!
Cable

Ewa Beach, HI

#13 Jan 7, 2009
Thanks for sharing Lanai..... so self-sufficient.
Kuokoa

Keaau, HI

#14 Jan 7, 2009
MY concern is that 10 ACRES of prime agricultural land is being used to produce only 30% of the electricity needed at peak demand! Could that land maybe be used go grow FOOD? A power plant that uses oil that otherwise would be not used anywhere else only takes a fraction of the space being used by this solar "farm". Additionally, people, we are not in a period of global warming, we are at the beginning of a new ICE AGE in which much of the Earth will freeze.
Kuokoa

Keaau, HI

#15 Jan 7, 2009
What happens when the sun does not shine? MECO still has to have the oil burning power plant on Lanai at a cost to all customers.
willie

Farmington, MI

#16 Jan 7, 2009
Kuokoa wrote:
MY concern is that 10 ACRES of prime agricultural land is being used to produce only 30% of the electricity needed at peak demand! Could that land maybe be used go grow FOOD? A power plant that uses oil that otherwise would be not used anywhere else only takes a fraction of the space being used by this solar "farm". Additionally, people, we are not in a period of global warming, we are at the beginning of a new ICE AGE in which much of the Earth will freeze.
You ever been to Lanai? It used to be covered in Pineapple and is now covered in weeds. They don't need to grow food there they have switched to the tourist model of making money. Pretty soon some more prime farm land will be growing windmills. Now all they need is a nuke plant to round things out for when the wind isn't blowing or the sun not shining.
alice

Ewa Beach, HI

#17 Jan 7, 2009
Boo-hoo, my Etch & Sketch melted down.
mauisurfer

Kahului, HI

#18 Jan 7, 2009
wrong technology
Solar THERMAL is much more efficient than photovoltaic for an application this size. Solar thermal stores HEAT, so power can be produced when there is little sun. Solar thermal does NOT use silicon, it is completely proven known technology. There are more than 20 solar thermal powerplants in California that have been operating 24/7 for over 20 years. The newest one now being built is at Gila Bend, Arizona. The Arizona Public Utilities Commission is years ahead of Lingle, Tavares, and HECO/MECO.
Google this:
Abengoa solar, Gila Bend, Arizona.
not alices friend

Honolulu, HI

#19 Jan 7, 2009
alice wrote:
Boo-hoo, my Etch & Sketch melted down.
who cares. stop posting
Dman

Koloa, HI

#20 Jan 7, 2009
I was told that 45 minutes of direct sun light could provide enough energy for the whole world for 1 year. Seems like Lanai is on to something and I hope Oahu will get on board. This is the future people

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