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Questions tagged [storage]

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3
votes
1answer
66 views

Is Tesla Powerwall a good investment?

I'm trying to determine if investing in a couple of Tesla Powerwall units to store solar energy is a wise financial decision. My energy cost is $0.1649/kWh. The installed price of the two Powerwall ...
6
votes
0answers
32 views

Freezing Ice Pops Sustainably

When storing ice pops for retail customers, I need to package them in a freezer-safe ,clear wrapping. I would like for it to be compostable, but apparently the compostable cellophane options are not ...
5
votes
1answer
121 views

How to store rechargeable batteries

I like using rechargeable NiMH batteries (AA and AAA) rather than buying single-use ones, for obvious reasons. The issue is, I often have to prematurely discard them because they leak. I suspect it ...
6
votes
1answer
110 views

Would a root cellar benefit from an active ventilation system activated by temperature or humidity?

We are designing a root cellar for a landscape client, and have read the literature on passive venting. We're going to use a solar panel/battery setup to power a small light inside, but were wondering ...
5
votes
3answers
97 views

Energy storage idea: Pumped hydroelectric storage in ocean using difference in salt content

Note: Updated the calculcation, found an error. With that, the concept isn't economically viable any more. I wanted to share a concept for a possible cheap large scale energy storage concept that has ...
14
votes
3answers
2k views

What's the average efficiency of pumped hydroelectric energy storage facilities?

Pumped hydroelectric storage has, to date, been the most scalable way to store electricity (in this case, in the form of gravitational potential energy), allowing us to spread the time between when ...
15
votes
2answers
320 views

Is buying online more sustainable than in local shop next door?

I was planning to buy a toy. I can buy it online and in local shop next door. Price is (including shipping in case of online shop) more or less the same. Is one more sustainable than the other?
5
votes
2answers
733 views

How can corrugated cardboard from packaging be compacted for storage before recycling?

A 1500+ employees company is trying to be greener and instead of throwing cardboard packaging out it sends it for recycling. Recycling company won't accept less than several dozen kilograms of ...
6
votes
5answers
2k views

Freezing Bananas With Less Waste

My wife likes to freeze bananas by removing their skin, wrapping them in aluminum foil, and placing them in the freezer. She eats a couple of bananas per day. So, this is using up a lot of aluminum ...
12
votes
4answers
856 views

How to store plastic bags for easy access?

I bring some plastic bags to my flat almost everyday. I do not throw them out, instead I reuse them on a daily basis until they wear out. But I have a problem organising them and I am yet to find a ...
9
votes
6answers
8k views

What sustainable packaging can be used for meat in the freezer?

When my family purchases meat from the supermarket, it comes on a non-recyclable plastic foam tray with plastic cling wrap over the top. We can improve on this by purchasing meat elsewhere. However, ...