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05/18/2011
2:09 AM
Possibly the Perfect Reflective Surface for Solar?
by
sugarandfat
Last post:
06/06/2012
6:54 AM
by
sugarandfat
20
576
06/02/2012
7:43 AM
Super Battery Bank
by
JOHN H VAN ALLEN
Last post:
06/05/2012
8:38 AM
by
PeterT
13
534
05/14/2012
2:50 AM
Bearing Creapage Preload of Bearing Wind Turbine
by
anees
Last post:
05/14/2012
2:50 AM
by
anees
0
172
05/10/2012
12:18 PM
Nice Biodigester System, and Politics of Use
by
ronwagn
Last post:
05/11/2012
11:57 AM
by
Passerby
12
262
05/09/2012
6:30 AM
The New LED Technology And Old Habits For Home Lighting Don't Mix
by
nikolay
Last post:
05/11/2012
7:58 AM
by
micahd02
17
484
10/26/2011
3:08 AM
Resonance, Traveling Wave: Cheap Way to Compress Air?
by
Lutherman
Last post:
05/07/2012
9:05 AM
by
MarkhamCornoit
122
1243
05/03/2012
3:10 PM
Solar Panel Production Advice
by
spacecannon
Last post:
05/04/2012
10:50 PM
by
spacecannon
8
422
04/23/2012
3:50 AM
Harmonic 3 in Photovoltaic Application
by
fred-BLS
Last post:
04/27/2012
12:27 AM
by
RAMConsult
1
131
04/20/2011
12:22 PM
Waste to Energy Technology Wanted
by
chrissaki
Last post:
04/21/2012
2:36 AM
by
umer001
13
305
09/08/2010
8:45 PM
Anyone Have Success With a Magnetic Water Softener?
by
waldig
Last post:
04/14/2012
8:57 PM
by
Drew K
29
1190
03/31/2010
1:20 PM
Solar Power 1500 Times More Powerful Than Normal!
by
wbfroggie
Last post:
04/08/2012
6:55 PM
by
wbfroggie
10
278
04/07/2012
11:52 AM
Is it Normal That I'm Not frustrated?
by
az native
Last post:
04/07/2012
2:37 PM
by
kramarat
8
178
10/17/2010
7:17 PM
Solar Cells/Build Panel
by
conntaxman
Last post:
04/05/2012
1:15 PM
by
saveone12
31
607
03/14/2012
7:38 PM
Where are the New Energy Sources?
by
ronseto
Last post:
04/03/2012
7:41 PM
by
ronwagn
128
950
02/16/2012
7:00 AM
Hydro Generator Setup
by
Basco
Last post:
03/30/2012
10:14 PM
by
czgut
19
460
03/28/2012
9:44 AM
Solar panels and eolic systems for commercial use
by
Frank-Jazz
Last post:
03/28/2012
1:36 PM
by
SolarEagle
1
142
03/19/2012
6:00 AM
Energy Free Power Generator - HOJO MOTOR
by
vijaydongare
Last post:
03/25/2012
11:39 AM
by
DVader1000
6
286
02/26/2012
1:55 PM
Open Source Civilization Starter Kit
by
ronwagn
Last post:
03/21/2012
8:06 AM
by
artbyjoe
13
445
06/28/2010
1:23 AM
How to Design and Make a Low Cost, Low Tech. Solar Tracking System
by
npsdhillon
Last post:
03/19/2012
11:17 AM
by
Randall
32
1240
04/22/2011
2:42 AM
Nano Airlift Pump? How High Can it Pump?
by
gaiatechnician
Last post:
03/13/2012
1:18 PM
by
gaiatechnician
14
1424
03/10/2012
10:19 AM
Physical Meaning of Weibull Function
by
mansoor_vm
Last post:
03/10/2012
10:29 AM
by
lyn
1
164
01/23/2012
4:26 PM
Dubai Too Hot for Solar Panels?
by
GlobalReach
Last post:
03/07/2012
3:44 PM
by
Johny451
30
730
03/03/2012
4:44 AM
Controlled Use of Geothermal Energy From Volcanic Lawa
by
pritam
Last post:
03/06/2012
9:10 AM
by
ci139
22
329
03/03/2012
12:16 PM
Conservation
by
blocko
Last post:
03/04/2012
7:21 PM
by
TVP45
7
254
02/28/2012
9:46 PM
Hot Water with Hydro
by
lighthasmass
Last post:
03/04/2012
10:49 AM
by
Far
22
407
02/22/2012
7:11 PM
Hydro Power for Trout Hatchery
by
awdturbo04
Last post:
02/27/2012
6:46 AM
by
irelandeng
8
348
01/09/2010
11:19 AM
Power Quality devices vs VFD's and Power Factor Correction devices.
by
smartpowergary
Last post:
02/15/2012
4:00 PM
by
rodeh
17
636
01/18/2012
4:05 AM
Quick Charging Technology For Car Battery
by
Kuldeep Yadav
Last post:
02/13/2012
5:35 PM
by
elnav
18
355
01/13/2012
5:25 AM
How to Convert Off-peak Wind Energy Into On-peak Electricity Production?
by
GlobalReach
Last post:
02/07/2012
9:32 PM
by
czgut
93
896
02/02/2012
8:51 AM
Search for the Salvaged (Liberty Engines)
by
EkoNation
Last post:
02/02/2012
2:08 PM
by
SolarEagle
3
190
09/04/2011
6:38 AM
Micro Hydro and Wind Turbine - Closed Loop for Water
by
cristle
Last post:
01/30/2012
8:38 PM
by
czgut
15
706
01/26/2012
12:57 PM
Looking For a Dissociation/Co-generation Solution
by
michael phelan
Last post:
01/27/2012
3:43 PM
by
SolarEagle
1
130
05/05/2009
5:02 AM
Anaerobic Digesters for Methane Production
by Anonymous Poster
Last post:
01/22/2012
11:44 AM
by
marcopolo
3
161
11/08/2011
10:13 PM
Power in the Wind
by
johnnyb5
Last post:
01/17/2012
6:52 AM
by
Garthh
36
419
01/07/2012
5:53 PM
PV Price Discrepancies
by
Tompa
Last post:
01/15/2012
8:27 AM
by
Tompa
75
647
01/03/2012
11:34 PM
Waterless Toilets- For Droughted Areas
by
ds
Last post:
01/12/2012
3:54 PM
by
Ried
11
358
12/23/2011
4:49 PM
Life of the Christmas Tree
by
HUSH
Last post:
01/05/2012
2:23 AM
by
pnaban
3
267
12/21/2011
9:47 AM
re-engineering an Economy
by
David Arens
Last post:
01/03/2012
12:31 PM
by Anonymous Poster
61
434
12/17/2011
8:22 PM
Glass Recycling
by
Sid_Sidow
Last post:
12/31/2011
2:09 AM
by
ds
15
480
12/20/2011
1:42 PM
Methane Fuel Cells
by
Ron Davison
Last post:
12/31/2011
1:37 AM
by
ds
54
486
03/25/2011
10:35 PM
Thermal Storage
by Anonymous Poster
Last post:
12/23/2011
5:56 PM
by
oliverg1
13
375
12/01/2011
7:00 AM
How Many Retailers Does It Take to Change a Lightbulb?
by
PWSlack
Last post:
12/22/2011
10:54 PM
by
129CBRider
14
392
06/24/2011
6:11 AM
Wind Loads on PV Structures, Ground Mounted
by
Raam
Last post:
12/22/2011
12:15 AM
by
rikio
13
638
04/29/2010
4:24 PM
Underground Flywheels for Energy Storage
by
SavvyExacta
Last post:
12/15/2011
2:35 PM
by
Isti80
19
404
12/04/2011
4:34 AM
Solar Collector
by
bravo88
Last post:
12/06/2011
9:11 AM
by
Ried
11
479
11/17/2011
11:06 PM
Small Vehicle for Pulling Unmotorized RVs
by
ds
Last post:
12/03/2011
8:13 AM
by
129CBRider
17
393
11/26/2011
2:03 AM
Stirling Engines
by
nikos larissis
Last post:
12/02/2011
4:24 AM
by
woodpower
5
396
11/21/2011
9:10 PM
Test On the Underwater-Current Flow Along the Eastern Coastal Waters of Negros
by
Hyginus Parco
Last post:
11/30/2011
11:00 AM
by
cuba_pete
4
131
10/15/2011
11:59 AM
What are the Benefits of Reforestation
by
ravimalhi544
Last post:
11/23/2011
12:03 AM
by
129CBRider
17
237
11/21/2011
4:45 PM
Very Small Commercial Windmill/Generator?
by
Roland Burton
Last post:
11/22/2011
10:09 AM
by
129CBRider
9
374
03/06/2008
5:28 PM
Fiberglass Recycling and Disposal
by Anonymous Poster
Last post:
11/22/2011
2:45 AM
by
Me2
24
4447
11/08/2011
11:05 PM
Solar Cell Deteriorates When Exposed to Air
by
conntaxman
Last post:
11/10/2011
3:27 PM
by
Tompa
23
447
11/05/2011
2:15 AM
Solar Evaporation Ponds
by
gaurav.rkadam
Last post:
11/10/2011
4:17 AM
by
PWSlack
3
157
11/04/2011
9:04 AM
Wind Power Illusion
by
zgm
Last post:
11/04/2011
11:05 AM
by
tcmtech
5
210
11/02/2011
7:30 AM
Voltage Rating
by
garuda777
Last post:
11/02/2011
7:33 PM
by
jack of all trades
1
168
10/30/2011
8:00 AM
Photovoltaic Cells- What's to Stop You Doing This....
by
brian hughes
Last post:
11/02/2011
9:32 AM
by
brian hughes
17
458
10/17/2011
7:37 AM
New Use For Thin Plastic Store Bags
by
kramarat
Last post:
10/24/2011
4:08 PM
by
34point5
35
642
09/12/2011
10:03 AM
DIY Gassification
by
bc_eng
Last post:
10/20/2011
4:18 PM
by
marcopolo
17
538
05/31/2009
8:38 AM
Using a Freezer as an Air Conditioner
by
kramarat
Last post:
10/20/2011
12:26 PM
by
kramarat
98
3202
10/15/2011
7:19 PM
Test
by Anonymous Poster
Last post:
10/19/2011
6:33 AM
by
RoyBoy2727
13
142
10/06/2011
5:11 AM
Facts ?
by
Dilip Dombivalikar
Last post:
10/19/2011
12:01 AM
by
pnaban
26
299
10/02/2011
5:40 AM
Windmill Vs Grid Stability?
by
mansoor_vm
Last post:
10/18/2011
1:17 PM
by
russ123
16
447
10/15/2011
11:49 AM
Reforestation
by
ravimalhi544
Last post:
10/16/2011
9:28 AM
by
jtd405
4
167
10/11/2011
8:52 PM
Philippine Test Case 1201-C: What Better Option(s) Would You Suggest?
by
manilaman
Last post:
10/13/2011
7:23 PM
by
Far
1
204
07/08/2011
9:38 PM
Why We Should Build Floating Towns and Cities
by
GEORGEB
Last post:
10/07/2011
2:47 AM
by
YASHWANTH prathap chandran
30
485
09/25/2011
1:23 AM
Small 12v Project Needs Help
by
oscarillo
Last post:
09/30/2011
4:27 PM
by
K_Fry
35
467
09/05/2011
12:34 PM
Nutrient Value of Algae
by
qaqcpipeman
Last post:
09/27/2011
5:21 PM
by
qaqcpipeman
10
346
09/24/2011
11:57 PM
Use of Air Conditioner
by
package54
Last post:
09/26/2011
7:46 AM
by
ozzb
9
481
09/01/2011
4:21 PM
Harvesting Overflow to Boost Water Pressure
by
Garthh
Last post:
09/25/2011
1:21 AM
by
MUKULMAHANT
30
527
05/18/2010
8:18 AM
Coal Catalyst
by
sharadmandale
Last post:
09/19/2011
8:58 PM
by
PeterV
7
212
09/16/2011
1:31 AM
Something New in Fusion Research
by
Ed Weldon
Last post:
09/18/2011
11:10 PM
by
Tornado
13
339
06/19/2011
8:11 AM
Stirling Engine
by
chandu krishnamurthi
Last post:
09/18/2011
1:18 AM
by
redfred
64
611
09/08/2011
6:46 AM
Solar Pre-heated Water - Need Help Getting Water To Flow
by
Dennis Beckwith
Last post:
09/17/2011
2:06 PM
by
artsmith
43
1163
09/20/2010
4:53 PM
Small Scale ORC Power Gen
by
hangwaiter
Last post:
09/16/2011
12:22 PM
by
Mizun
4
323
03/01/2011
1:34 AM
Looking For Practical Sterling Engine Design Resource
by
DarylM
Last post:
09/16/2011
11:46 AM
by
chtank
8
571
10/13/2010
9:06 PM
ROI on Solar/Battery Systems
by
regworth
Last post:
09/16/2011
11:45 AM
by
Mizun
49
2961
11/08/2010
6:33 PM
Clean Technology
by Anonymous Poster
Last post:
09/16/2011
11:19 AM
by
Mizun
19
210
02/09/2011
11:39 AM
Is this Passive Solar Free Piston Stirling Cycle Possible?
by Anonymous Poster
Last post:
09/16/2011
10:53 AM
by
Mizun
3
190
06/01/2011
9:45 AM
Micro Biogas System?
by
jayjayfraher
Last post:
09/16/2011
10:33 AM
by
Mizun
4
165
12/06/2009
10:14 AM
Vertical Axis Wind Turbines
by
bob.gagnon
Last post:
09/14/2011
10:03 AM
by
Garthh
10
356
08/31/2011
2:42 PM
Solyndra Chapter 11; End of US Solar mfg.?
by
Ed Weldon
Last post:
09/09/2011
7:42 AM
by
PFR
33
462
08/29/2011
1:38 AM
Concre flooring with Acid Stain finish
by
foretec
Last post:
08/29/2011
1:46 AM
by
Tornado
1
168
08/13/2011
9:50 AM
Implux and Windgate Wind Turbines for Low Breezes.
by
duikerbok
Last post:
08/26/2011
1:21 PM
by
duikerbok
5
265
08/25/2011
11:47 PM
Philippine Test Case # 1201: What would you recommend as a Power Plant
by
manilaman
Last post:
08/26/2011
12:09 AM
by
Tornado
1
257
08/21/2011
10:31 PM
Plant Advisor
by
Arianto Soebagio
Last post:
08/23/2011
10:53 PM
by
Qwack
5
213
08/23/2011
5:15 AM
Methane Yield Versus Duration of Exposure (Before Getting Into Digester)
by
Kemal
Last post:
08/23/2011
9:45 AM
by
Kemal
3
232
08/12/2011
4:47 PM
Philippine Test Case # 1101: What Would You Recommend As An Appropriate RE Power
by
manilaman
Last post:
08/15/2011
5:41 PM
by
indel
16
259
08/04/2011
8:21 AM
Above Ground Pool Solar Coil Design
by
brfox
Last post:
08/13/2011
3:45 PM
by
ky
15
285
06/11/2011
1:17 PM
Designing Gas for Different Temperatures to Cut Costs
by
ds
Last post:
08/12/2011
4:29 PM
by
ky
22
286
07/31/2011
2:27 PM
Cheap Plastic Made from Sugarcane
by
Garthh
Last post:
08/08/2011
10:31 AM
by
Doorman
30
409
03/12/2011
1:11 AM
Square Rigged Sail Wind Turbine
by
SRSWT
Last post:
08/04/2011
3:15 AM
by
SRSWT
40
859
08/03/2011
2:27 AM
Air Compressor Capacity?
by
JBK
Last post:
08/03/2011
6:52 AM
by Anonymous Poster
1
237
07/28/2011
10:02 AM
House made of plastic bottles
by
Blokle
Last post:
07/29/2011
9:20 AM
by
34point5
9
220
07/07/2011
11:55 AM
Optimized Engineering Materials Through Cleantech
by
pvhramani
Last post:
07/26/2011
11:18 AM
by
pvhramani
13
1175
06/20/2011
10:36 PM
Wind Turbine Local Loop
by
JEP
Last post:
07/14/2011
10:48 PM
by
129CBRider
42
442
07/11/2011
10:02 AM
Lamp Recycling = Artificial Industry?
by
NotUrOrdinaryJoe
Last post:
07/13/2011
11:35 AM
by
WWkayaker
14
402
07/02/2011
8:07 PM
Wave Power Generation Using Reservoirs
by
GEORGEB
Last post:
07/08/2011
4:34 PM
by
Sleepy
35
482
06/22/2011
4:12 AM
Reciprocating Air Compressor with Bull Power
by
balakrishnan Pullat
Last post:
07/07/2011
12:37 PM
by
esbuck
26
330
06/28/2011
12:46 AM
Power generation from Cotton Waste
by
ajsmmill
Last post:
07/06/2011
8:56 PM
by
129CBRider
6
174
05/23/2011
2:33 PM
Cost of Shipping Containers in Haiti
by
Shannon Link
Last post:
07/05/2011
2:52 PM
by
sophia
26
764
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