[RE-wrenches] gravity storage of excess PV generation

[Hilton Dier via RE-wrenches]

A one metric ton weight on a 30 meter tall tower has a potential energy of 81 
watt hours. I’d stick with batteries. 

The only places gravity storage works are where you have “free” height and huge 
amounts of free weight. That is, an existing lake at a good elevation for 
pumped storage.

But on that note, it’s cheaper to buy and opportunistically fill a 1,000 gallon 
plastic storage tank than to buy the batteries needed to fill that storage tank 
on demand. Store the final product if you can. 

Hilton Dier III
Renewable Energy Design
Missisquoi River Hydro LLC
___
List sponsored by Redwood Alliance

Pay optional member dues here: http://re-wrenches.org

List Address: RE-wrenches@lists.re-wrenches.org

Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

There are two list archives for searching. When one doesn't work, try the other:
https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm

Check out or update participant bios:
http://www.members.re-wrenches.org

Re: [RE-wrenches] gravity storage of excess PV generation

[Jerry Shafer via RE-wrenches]

Kirk, wrenches,
There are several gravity storage systems out there in the renewable energy
industry. I did water lift and drain back through lift pumps and
hydro-electric. No different than all storage systems, it's all about
capacity. Great talks
Jerry

On Wed, Jan 4, 2023, 7:23 AM Kirk Herander via RE-wrenches <
re-wrenches@lists.re-wrenches.org> wrote:

> Happy New year All,
>
> I'm sure most have heard of this technology, using excess PV-powered
> motors to raise large weights to the top of a tower, then slowly lowering
> them to release energy, the motors now rotating as generators.
>
> I've only read articles of a few of these under construction on a utility
> scale. I wonder if this has been tried on a smaller scale anywhere.
> Thoughts? Resources? Thanks.
>
> --
>
> *Kirk Herander / **kirkh@vermont.solar *
>
> *Owner|Principal, VT Solar, LLC*
>
> *Celebrating our 32st Anniversary 1991-2023!!*
>
> *www.vermont.solar*
> 
>
> dba Vermont Solar Engineering
>
> 802.863.1202
> ___
> List sponsored by Redwood Alliance
>
> Pay optional member dues here: http://re-wrenches.org
>
> List Address: RE-wrenches@lists.re-wrenches.org
>
> Change listserver email address & settings:
> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org
>
> There are two list archives for searching. When one doesn't work, try the
> other:
> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org
>
> List rules & etiquette:
> http://www.re-wrenches.org/etiquette.htm
>
> Check out or update participant bios:
> http://www.members.re-wrenches.org
>
>
___
List sponsored by Redwood Alliance

Pay optional member dues here: http://re-wrenches.org

List Address: RE-wrenches@lists.re-wrenches.org

Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

There are two list archives for searching. When one doesn't work, try the other:
https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm

Check out or update participant bios:
http://www.members.re-wrenches.org

[RE-wrenches] gravity storage of excess PV generation

[Kirk Herander via RE-wrenches]

Happy New year All,

I'm sure most have heard of this technology, using excess PV-powered motors
to raise large weights to the top of a tower, then slowly lowering them to
release energy, the motors now rotating as generators.

I've only read articles of a few of these under construction on a utility
scale. I wonder if this has been tried on a smaller scale anywhere.
Thoughts? Resources? Thanks.

-- 

*Kirk Herander / **kirkh@vermont.solar *

*Owner|Principal, VT Solar, LLC*

*Celebrating our 32st Anniversary 1991-2023!!*

*www.vermont.solar*


dba Vermont Solar Engineering

802.863.1202
___
List sponsored by Redwood Alliance

Pay optional member dues here: http://re-wrenches.org

List Address: RE-wrenches@lists.re-wrenches.org

Change listserver email address & settings:
http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org

There are two list archives for searching. When one doesn't work, try the other:
https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/
http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org

List rules & etiquette:
http://www.re-wrenches.org/etiquette.htm

Check out or update participant bios:
http://www.members.re-wrenches.org