Battery-Powered Tools are Changing
By Jeffrey Yago, P.E., C.E.M.
April/May/June, 2019
Battery-powered tool technology is now undergoing some rapid changes in both the power of the tool motors and the batteries supplying the added power. For many years most battery-powered...
Prepper power! Part 2
By Jeffrey Yago, P.E., CEM
Issue #137 • September/October, 2012
I discussed in Part 1 the many reasons why preppers need to think more long-term about providing reliable electric power. I also mentioned that while it's...
Energy class: Part 2 — Understanding your electric bill
By Jeffrey Yago, P.E., CEM
Issue #112 • July/August, 2008
In Part 1 of this series of articles, I hopefully made you aware that your home's utility costs should be more of a concern than what...
Solar-Powered Electric Fencing
By Jeffrey Yago, P.E., CEM
Issue #147 • May/June, 2014
A new electric fence attached to older traditional wood fencing
More and more people are turning to electric fences as the cost of standard metal and wood...
Don’t discount a generator, especially a diesel generator, as your primary power source
By Skip Thomsen
Issue #28 • July/August, 1994
There are three major reasons that wind, solar or hydro-electric systems are impractical for some folks: not enough wind, too many cloudy days, and no stream. In that...
Design calculations for overshot waterwheels
By Rudy Behrens
Issue #18 • November/December, 1992
(For good background information for this article, the reader should read "Waterpower for personal use" in Issue No. 16 and "Design calculations for overshot waterwheels" in Issue No....
Build a passive-solar food dehydrator
By Jeffrey Yago, P.E., CEM
Issue #143 • September/October, 2013
The finished passive-solar dehydrator maintained a fairly constant temperature of 150° F throughout most of the day without any repositioning, which shows that this design can...
Power-up bag
By Jeffrey R. Yago, P. E.
During any emergency or related power outage, the most important electronic device you need to keep operating is your cell phone, at least as long as cellular service is...
Hydronic woodstoves
By Jeffrey Yago, P.E., CEM
Issue #105 • May/June, 2007
Do you realize there is an entire field of woodstoves that the general public rarely hears about, even though there are specialty woodstove stores in every...
Dim bulbs in California
By Jeffrey Yago, P.E., CEM
Issue #107 • September/October, 2007
By now many of us have heard that under a bill proposed by Assemblyman Lloyd Levine (D), the state of California is about to become the...
Job site solar power
By Jeffrey Yago, P.E., CEM
Issue #144 • November/December, 2013
Regardless of your favorite brand, standardize all
battery-powered tools to use the same battery pack.
If you are planning to live off-grid or are building something in a...
Solar power for farm and ranch
By Jeffrey R. Yago, P.E.
It may be surprising to learn that there are now all kinds of do-it-yourself solar powered devices specifically designed to make farmers and ranchers lives easier and safer. Many of...
Just for Kids: Sun-kabobs and solar sizzle
By Lucy Shober
Issue #28 • July/August, 1994
Click on pictures for printable, full-sized versions to color.
Picture yourself in this dreamy scenario: It's a hot summer afternoon. The sun is beaming through the shade trees as...
Keep the Ice On
By Jeffrey R. Yago, P.E., C.E.M.
Self-Reliance, Fall 2019
When I ask most people why they own or are looking to buy a generator, most will say it is to keep a refrigerator or freezer operating....
Solar-powered refrigerators
By Jeffrey Yago, P.E., CEM
Issue #102 • November/December, 2006
In Issue #99, I discussed the importance of using the most energy-efficient appliances you can buy for any remote cabin or off-grid solar application. I also...
7 Solar Water Heating System Designs
By Michael Hackleman
Issue #65 • September/October, 2000
(Rob Harlan is a general and solar contractor with 25 years of experience with solar water heating systems in Mendocino County, California. Rob primarily designs and installs photovoltaic...
