In Business Since

- operates on heads of 4 feet to over 400

- Battery voltage or high voltage for long distances

- Pelton and turgo turbines runners sold separately

ENERGY SYSTEMS & DESIGN

P.O. Box 1557, Sussex, N.B., Canada E0E 1P0 506-433-3151

Off The Shelf

The Spec Sheet Directory of Renewable Electricity

Compiled by Paul Wilkins Reviewed by Richard Perez

Ever get into designing a solar electric system and need specific information about a product. Well, you can write the manufacturers for all their product literature— or you can get a copy of Off The Shelf. This book is the answer for designers of renewable energy systems. It is a compilation of product specification sheets for just about every manufacturer in the RE industry. Sections in this book include: photovoltaics, mounts & trackers, batteries, inverters, controls & regulators, small hydroelectric turbines, wind generators, DC lighting (indoor & outdoor), tools, venting, water pumping, and an appendix listing hundreds of dealers and installers of RE products. Whew!

All this renewable energy product information is collected into a 8.5 inch by 11 inch three ring binder containing well over 200 pages. I use it regularly to find out product information such as what is the rated power (or mounting hole dimensions) of a particular PV module, or maybe the surge capacity of an inverter. The binder even includes little extras such as a computer disk demonstrating the OmniLink metering software by SunSelector. Having all the information for all these different products in one place makes it easier to decide which PV module, wind generator, or whatever to use. Having the physical dimensions of all the different products makes designing the inverter/control/battery room or the PV racks much easier.

Over the last fifteen years Paul Wilkins has done much to foster the use of renewable energy. His PV Network News has provided access worldwide to RE businesses and services. The Off The Shelf book is his best idea yet. The cost of Off The Shelf is $69.95 shipped prepaid (via book rate) inside USA. For international orders or fast shipping call or write Paul Wilkins.

Access

Paul Wilkins, The PV Network News, 2303 Cedros Circle, Santa Fe, NM 87505 • Phone and FAX 505-4731067 • Internet E-Mail: [email protected]

Practical Photovoltaics

By Richard J. Komp, Ph.D. Reviewed by Michael Welch

This book has a little bit of everything. At 196 pages, it would be hard to get it all in, and quite frankly, each section of the book left me with as many additional questions as it answered. Fortunately, the author included a reading list at the end of each chapter to fill in the blanks. One might need to end up with an awful lot of reference books, though.

I'm a generalist. This book is good for folks like me that want knowledge without getting deep into the technical stuff. It covers the basics of everything from the history of solar electricity to new developments in PV technology and from how solar cells are made to how they work. It even has an appendix on making a PV module from individual cells.

My favorite part was the chapter on how solar cells are made. It was interesting to learn about techniques for

OH? TIME SMBLF

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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