Are hydrogen-fueled cars pie-in-the-sky?

By Jeffrey Yago, P.E., CEM Issue #103 • January/February, 2007 Hydrogen-fueled cars is a topic of much discussion these days. People who want to see the U.S. freed from dependence on foreign oil often assume the...

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...

Grid-tied, Grid-connected, Off-grid. What’s the difference?

By Jeffrey Yago, P.E., CEM Issue #140 • March/April, 2013 Several weeks ago I received a call from a woman in Florida complaining that they just had a power outage lasting several days and her solar...

Solar system codes — Build it right!

By Jeffrey Yago, P.E., CEM Issue #154 • July/August, 2015 Here, multiple homemade solar modules have caught fire and burned. The further you go into the mountains or rural countryside, the more some people think building codes...

Keeping your food cold — Solutions to refrigeration when electricity is scarce

By Michael Hackleman Issue #56 • March/April, 1999 Many readers of this magazine live in remote settings and generate their own electricity, often through solar, hydro, wind, or generator machines, storing the electricity generated in batteries....

Handy Keychain Mini-Gadgets

By Jeff Yago, P.E., CEM Winter, 2017 I believe when most people think of being prepared, they immediately think in terms of bug-out bags, stored food and water, guns, and generators. However, there can be less...

Solar suitcase

By Jeffrey Yago, P.E., CEM Issue #150 • November/December, 2014 Completed solar suitcase project From time to time, people call to ask what we have for emergency solar power suitable for a bug-out bag. Naturally, my first...

Keep those gadgets working after the power goes out

By Jeffrey Yago, P.E., CEM Issue #84 • November/December, 2004 The recent 2003 northeast electric grid failure taught the residents of many large cities what most rural residents learned years ago: Lights, air conditioners, televisions, stereos,...

Standby battery charging techniques can ensure engine startups

By Jeffrey Yago, P.E., CEM Issue #83 • September/October, 2003 Those of us living beyond the suburbs own various sizes and types of yard and garden machinery. From the mandatory riding lawnmower for those weekend warriors...

Making and using a solar cooker

By Joe Radabaugh Issue #30 • November/December, 2004 Solar cooking is a delightful alternative to conventional cooking methods. The solar cookers available today really work and they deserve serious evaluation by a much larger audience. For...

Build your own battery charging station

By Jeffrey Yago, P.E., CEM Issue #142 • July/August, 2013 Completed charging station after sanding and painting Let me guess — the reason many of you do not use rechargeable batteries is that every time you need...

Solar Power 101 — Batteries: Part 1

By Jeffrey Yago, P.E., CEM Issue #87 • May/June, 2004 This article is the first in a series of what will be a beginner's course in solar electricty. Simultaneously we have instituted a Home Energy Information...

Add solar power to your truck camper

By Jeffrey Yago, P.E., CEM Issue #93 • May/June, 2005 The recreational vehicle (RV) world is having a major comeback with the influx of baby-boomers. Today's travel trailers, 5th wheels, and motor coaches now include everything...

Make your own biodiesel for 80¢ per gallon

By Jeffrey Yago, P.E., CEM Issue #101 • September/October, 2006 My Ford F-250 diesel crew-cab pickup did not cause me to become interested in making my own bio-diesel fuel. No, the final straw was when I...

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...

Phantom solar — The crucial invisible system needed before you install solar

By Jeffrey Yago, P.E., CEM Issue #78 • Are you planning to install a solar photovoltaic system to reduce your utility bills? How would you like it if your first solar electric power system had invisible...