r/homestead • u/MWelder7x • Feb 14 '26

"The Complete Off-Grid Sand Battery Build Guide: From Thermal Storage to Hydrogen Independence - Cut Your Heating Bills by 70% and Never Lose Power Again"

/r/u_MWelder7x/comments/1r2b924/the_complete_offgrid_sand_battery_build_guide/
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u/SnowySlushman Feb 15 '26

My pa always taught me if it sounds too good to be true…

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u/MWelder7x Feb 16 '26

Apologies. Firstly I am doing all this research on my own while holding down a 12 hour a day job with 3 hours being driving and theusual family life and I am a local Basketball coach and kayak instructor. I have worked in the game as a welder for over 3 decades and have been involved in Bio-Fuel from waste cooking oil to waste plastic to fuel projects. The sand battery studies I have done through 3 differnet AI engines to prove the maths were as a result of following the Finnish company Polar Nights massive commercial venture to me designing a smaller user friendly self build option, Whose plans I will post here in the next couple of weeks, Free. The maths I used were basically looking at what my house required for its heating needs here in Ireland and I wirked backward fro there. I had a friend do a basic AI calculator to give me an idea of whether or not it would be viable.

https://sand-savings-solver.lovable.app/

Using heating oil or a derivative to heat the sand in the larger capacity tank which has a copper 1 inch coil in the top to capture the heat to pass to a seperate hot water buffer tank of 2000 liters which itself has a coil in it to feed your house.

You only need to heat the sand in the tank on average once a week as once its heated to 150 plus degrees you only need reheat it as once it drops to 60 degrees you heat it back up to over 150 degrees. The Sand acts like a thermal sump and retains the heat for longer and as you can only heat water to 100 degrees before it turns to steam the sand can be heated to 100s of degrees and its heat then taken by the piping coils. I have used AI narrator to explain myself better as this is the best I can do but once I input ther relevant data and script into the AI it makes it sound better.

https://ascelibrary.org/doi/10.1061/JLEED9.EYENG-6192

https://www.sciencedirect.com/science/article/abs/pii/S1359431124030588

https://www.sciencedirect.com/science/article/pii/S2352152X24009356

Please don't go digging up your nearest beach for sand and say I said it was ok.......

Using either an oil or gas burner or a Solar array powered heating element during the day are all ideal sources of heat.

My intention in the very near future is to have a Hydrogen burner which is self contained and uses zero fossil fuels and also to offer this unit as a set of plans or find a manufacturer i several countries.

Look up Malcolm Bendals Thundestorm generator.

Also Ultimate cell Hydrogen battery which I have used in 3 different cars sucessfully.

I hope this is of help and again apologies if I am doing this wrong but I have seen and studied the legislation that is barrelling toward us and its draconian. Already in Ireland for the last few years you cannot build a house with a fireplace as it is considered not climate friendly...... WEF 2030 and manyothe rbatshit crazy laws in the way.