Category: Home Power

Mr. Rawles In your [list of] resources for solar and off grid contacts you must not have been aware of Kenny G. at www.armadillosolar.net, who is most likely the most respected install team leader in the U.S. and one of the most sought after consultants in the industry. In many cases he has come in to fix systems installed by less than honest installers, particularly in the Texas. In the local area of Austin, Texas I know of none of his customers who are less than enthusiastic about his products and advice. Austin hosts the largest aggregation of residential off …

James: What would be the best choice for batteries for a backup solar system, a marine deep cycle, or golf cart batteries? The marine deep cycle batteries I have looked at are “maintenance free.” This provides no way to add water. Would this be a problem, or do the batteries have to have a way to add water even if they are maintenance free?   Thank you,  – HP JWR Replies: The terms “marine battery ” and “golf cart battery” are used almost interchangeably by some manufacturers,. Both generally refer to deep cycle lead acid batteries with extra thick plates. Technically, a marine battery …

One of the most important steps that you can take toward self-reliance is developing the ability to produce your own electricity. Alternatives for off-grid power include: Photovoltaics Wind Power Micro-Hydro Systems Photovoltaic (“PV“) power generation systems use large panels that generate DC voltage. The most durable panels use monocrystaline solar cells in large arrays in weather-sealed panels with glass covers and metal frames. These are designed to last a lifetime with just minimal care, and do not suffer any significant degradation in output over time. They are made with outputs from 5 to 100 watts. They are easily wired in …

Electricity 101: Electricity is fundamental to our first world every day life. We know electricity mostly in one of two forms in the home, from the wall, and in a battery. The electricity that comes out of the wall is high voltage (~110-120 volts [JWR adds: alternating current (AC), in North America–except Mexico, which uses a more macho 127  volts] AC), relatively low amperage, and alternating current. The electricity that is stored in batteries comes in a variety of voltages and amperages but is always direct current (DC). Size AA batteries are 1.5 volts, along with most other battery types, …

Jim: As usual, excellent comments about [making] a clean cut from the grid. As for me, I am fully self contained in the country with a Trace Inverter/Charger in a Genverter setup. My day to day electricity is from a dual fuel generator which is powered by propane stored in six 1000 gallon surplus tanks. I also have a windmill, windmill tower and solar cells pre wired. HOWEVER, the windmill and solar cells are stored in a well grounded CONEX. ( and BTW the windmill is heavy as he*l on the alternator end and takes a heavy gin pole to …

Sir: With all the talk recently on EMP issues, I wonder if a solar system or wind generator less vulnerable or just as vulnerable to EMP to the grid. What type of additional protection could/should be incorporated in to alternative energy designed systems? Keep up the terrific work on the blog. It’s the first thing I read every morning. – D. JWR Replies:  All modern circuitry that employs microchips is at risk.  However, the greatest risk is to systems that are connected to grid power. This is because the power grid will work like a giant antenna to collect EMP. …

Jim: I just discovered these cool “Hit and Miss” gas engines made in the 1920s and 1930s by Maytag. They were used to power washing machines. Very simple engine; maybe one horsepower. You start it with a foot pedal that leverages a gear to spin the crankshaft to get it going. What a wonderful little engine for a remote location.  These could be used to power the washing machine or even run a small generator to charge up a bank of 12 volt batteries. I noticed that there are currently several for sale on eBay and they even have leather …

Jim, Thanks for keeping up the good work. I have inadvertently discovered a great power outage alarm. We were bought a carbon monoxide detector a while back. Whenever the power is cut, or the unit is un-plugged, it WILL wake you up!   I don’t know how long it continues to go off because it is so loud, I get it stopped right away. This is an item we should all have, too, just to detect the carbon monoxide. – Sid

This story is fairly novel, and serves as food for thought and grounds for further research (FFTAGFFR.) If the CIA finds such technology appropriate for Third World living conditions, shouldn’t we also, as individuals–for the event that the U.S. economy is somehow, someday plunged to that level? See: http://news.yahoo.com/s/csm/20051018/ts_csm/aplugandplay_1

I just heard that Global Solar flexible amorphous photovoltaic (PV) power panels (See: http://www.308systems.com/) are now available through Ready Made Resources. Amorphous PV panels are superior to he monocrystaline for many applications. Their greatest advantage is that they allow “graceful degradation.” A bullet hole through a monocrystaline panel usually means that it is history. A comparable hole through an amorphous panel (depending on how its individual cells are wired) usually means just a 5% loss in power. Be advised, however, that monocrystaline panels have an almost indefinite useful life, whereas amorphous panels lose some of their efficiency over time.

I have been a fan of one and two cylinder engines for many years. I grew up seeing these old timers putt-putting away at the county fair. Stationary engines still have a surprisingly large hobbyist following in the U.S. and Australia. Steam engines dominated from the 1860s to 1890s. Then came several different styles of one and two cylinder gas or diesel engines. They were eventually supplanted by higher compression (Briggs and Stratton style) high RPM gasoline engines. Because of their simplicity, low compression/low RPM engines still have considerable utility for grid-down survival use. They were common on most American …

Jim, We are living on our “retreat” now in the Quachita area of Arkansas. After a terrible storm yesterday and a power outage that is still going because Entergy [the local power utility company] has so much going on with the hurricanes, I can wholeheartedly recommend that everyone turn off their power for a weekend and make a list of things they haven’t thought of. Hubby and I have decided on more things that we should get. The generator is getting a good workout and we now know how much gas it consumes per hour and can plan accordingly. A …