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Off the grid, sustainable, efficient energy

Most recent

wood burning stoves

Wood burning Stove "cushions"

7 months ago 5 replies 1

rocket mass heaters

Cottage Rocket: Any experience with building them?

7 months ago 54 replies [ 1, 2 ] 1 22 24

rocket mass heaters

Tight space. how to heat

7 months ago 7 replies

rocket mass heaters

Cast iron fireplace + hot air ducts X Russian mass heater (kuznetsov) + hot air ducts

7 months ago 1 reply 1

rocket mass heaters

Incinerating cat poo

7 months ago 4 replies

conservation

CFL brightness and longevity claims

7 months ago 163 replies [ 1, 2, 3, 4, 5 ] 1 9 2

rocket mass heaters

Kindling Splitter

7 months ago 5 replies 1

alternative energy

DC to DC / battery to battery step up charger

7 months ago 0 replies

rocket mass heaters

ISO Rocket Mass Heaters in New England

7 months ago 4 replies

rocket mass heaters

looking for rocket mass heater consult in Western New England

7 months ago 2 replies 1

rocket mass heaters

RMH Maple Sap Evaporator?

7 months ago 8 replies 1

rocket mass heaters

New here, first post, I have been researching all different designs, and I came up with my own.

7 months ago 58 replies [ 1, 2 ] 11 9

alternative energy

LifePo4 Lithium Iron Phosphate Battery

7 months ago 29 replies 13

rocket mass heaters

Matt Walker tiny cookstove build in Portugal

7 months ago 210 replies [ 1, 2, 3, 4, 5, 6 ] 32 187 220

rocket mass heaters

can I get 100,000 BTU per hour from an 8" J-tube?

7 months ago 11 replies 1 7 6

rocket mass heaters

Portable RMH that fits in a pickup truck bed?

7 months ago 5 replies

rocket mass heaters

Just how dry is your firewood?

8 months ago 10 replies 4

rocket mass heaters

At Last. My RMH Is a Reality

8 months ago 28 replies 21 18

rocket mass heaters

Rocket Mass Heater

8 months ago 15 replies 1 8 9

rocket mass heaters

Consultants in Boise

8 months ago 4 replies 1

rocket mass heaters

Batchbox, J-tube, or DSR2? Help choosing outdoor heater/cooker design

8 months ago 2 replies 1 1

solar

Electrical/Solar help needed

8 months ago 35 replies 41 4

conservation

It is 2025 and incandescent is still better than LED

8 months ago 216 replies [ 1, 2, 3, 4, 5, 6 ] 14 17 24

rocket mass heaters

Slimline RMH

8 months ago 5 replies 4

rocket mass heaters

Miniature model of a J-tube RMH with mass

8 months ago 11 replies 4 6

bicycle

Adding comfort to bicycling

8 months ago 11 replies 3 3

rocket mass heaters

Concrete countertop for RMH?

8 months ago 9 replies 1 2

bicycle

Building a Bike Cargo Trailer

8 months ago 6 replies 12 8

rocket mass heaters

Learning to heat with bricks

8 months ago 13 replies 3 23

rocket mass heaters

Novel, simple, safe idea for a hydronic mass radiant heater (not rocket-y)?

8 months ago 5 replies 3

alternative energy

Briggs 18Hp Mower Engine Ran On Water In Carburetor

8 months ago 85 replies [ 1, 2, 3 ] 13 4

transportation

public transportation...what's it like where you live?

8 months ago 18 replies 1 3

rocket mass heaters

Belly of the Beast

8 months ago 3 replies 2 3

rocket mass heaters

A Baby Dragon Roars!

8 months ago 16 replies 4 4

rocket mass heaters

Morgan Super Wool for 5 minute riser, high or low density?

8 months ago 16 replies 9 2

bicycle

Bikeability in cities improves health, safety, longevity and traffic

8 months ago 2 replies 1

rocket mass heaters

Mass Heater Design Question

8 months ago 12 replies 3 8

rocket mass heaters

Help designing a mass heater

8 months ago 2 replies 5

bicycle

Handlebars

8 months ago 12 replies 7 3

wood burning stoves

Making Wood Stoves Safe for Pets

8 months ago 36 replies 4

rocket mass heaters

Rocket Mass Heater (No Barrel) build from Youtube

8 months ago 2 replies 2 2

rocket mass heaters

Rocket mass Heater in Vermont

8 months ago 1 reply 3

rocket mass heaters

Fire Brick

8 months ago 7 replies

rocket mass heaters

greetings and salutations. New here. A few questions.

8 months ago 10 replies 6
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Forums
energy

rocket mass heaters 43518

rocket stoves 30136

alternative energy 18251

wood burning stoves 13883

conservation 6465

solar 11516

hydro 2308

wind 1162

biogas 980

biodiesel 538

transportation 3028

bicycle 1869

rocket ovens 2397