| Wind-Electric Systems Simplified |
HP137: An in-depth look at what wind system will meet your home's need.
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| Wind Power Curves |
HP137: What's Wrong, What's Better: Learn how to compare wind turbines and assess their performance
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| Troubleshooting Small Wind Systems |
HP137: What to do when your wind system goes awry.
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| PV Array Mounting Options |
HP137: Read this for additional PV mounting information "Rack & Stack: PV Array Mounting Options" by Ryan Mayfield (HP124)
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| Pitched Roof Mounting |
HP137: Read this for additional PV mounting information "Pitched Roof Mounting" by Rebekah Hren (HP130)
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| Schools/Organizations Offering PV Training |
HP136: This document is the expanded table version from "Charting Your Solar Course"
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| Off or On Grid? Getting Real |
HP136: Read this for a detailed analysis of the advanages and disadvantages of on- and off-grid renewable energy systems.
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| Code Corner 134 correction |
HP134: This document contains corrected text and equations. |
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| The Fundamentals of Heat Exchangers |
HP134: For the ins and outs of solar hot water system heat exchangers, read this: "The Fundamentals of Heat Exchangers" by Chuck Marken (HP128). |
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| PV Module Buyer's Guide Spec Details |
HP134: Here are the specifications explanations as promised in the "Buyer's Guide" article in HP134. |
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| Finding True South correction |
HP131: This document contains the corrected illustrations for the article on page 22. |
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| Chiras-Richter Discount Table |
HP131: Here's the live spreadsheet promised in PV system economics article in HP131. Use this to Excel file to begin your own PV system financial analysis. |
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| Catching the Cloudburst |
HP125: Size your home rainwater harvesting system with these simple formulas. |
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| Hydro-Electric Penstock Design |
HP 125: Here are the tables promised in the microhydro penstock article in HP125 . Use these tables to determine the pipe size needed to handle the amount of flow and length of the pipeline. |
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| Marken Solar Hot Water Systems Guide |
HP 125: Complete data table of SRCC certified solar water heating systems. Current as of January 14, 2008. |
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| Rakfeldt System Article |
Issue 120: An original article from HP 6, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| Palumbo System Article |
Issue 120: An original article from HP 17, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| McCoy/Reising System Article #1 |
Issue 120: An original article from HP 24, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| McCoy/Reising System Article #2 |
Issue 120: An original article from HP 89, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| Robishaw System Article |
Issue 120: An original article from HP 35, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| Otto System Article |
Issue 120: An original article from HP 47, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| Kinzel/Kingsley System Article |
Issue 120: An original article from HP 47, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| Buck System Article #1 |
Issue 120: An original article from HP 48, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| Robishaw System Article #2 |
Issue 120: An original article from HP 109, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| Haeme System Article |
Issue 120: An original article from HP 81, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| Laughlin System Article |
Issue 120: An original article from HP 92, revisited in issue 120’s ‘Twenty Years of People Power’ article. |
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| Solar Domestic Hot Water System Sizing Spreadsheet |
Issue 118: Size a solar domestic hot water system for your home or business using this interactive spreadsheet. |
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Andy Kerr's PV system
spreadsheet |
Issue 117: Andy Kerr's financial spreadsheet analyzes the profitability of the second phase of his PV installation and can be used to analyze the economics of your own system. |
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| Andy Kerr's hybrid vehicles spreadsheet |
Issue 113: Andy Kerr's hybrid vehicle economics spreadsheet. |
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| Climate Change Still Fixable |
Issue 113: Can We Still Avoid Dangerous Human-Made Climate Change? NASA director James Hansen's presentation on climate change, to the New School University. |
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| Nukes & Climate Change |
Issue 112: Heinrich Böll Foundation report on
nuclear energy and climate change. |
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| PV Wire Costs |
Issue 104: Kent Osterberg's wire vs. PV costs spreadsheet. |
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| DTIPVTrialsReport.pdf |
Issue 104: Performance data for Anthony Skelton's PV system in the UK. Refer to system F in report. |
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Load Calculation Articles
Load Calc. Spreadsheet |
Issue 102 and 58: Electrical load calculation spreadsheet. |
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| MPPT Plans |
Issue 102: Tim Nolan's plans for his maximum power point tracking (MPPT) PV controller project. Updates are available at www.timnolan.com. |
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Andy Kerr's PV system
spreadsheet |
Issue 101: Andy Kerr's financial spreadsheet analyzes the profitability of the first phase of his PV installation and can be used to analyze the economics of your own system. |
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| Joe Miller's Windows
program |
Issue 98: Joe Miller's Windows program for
using digital multimeters and a PC to measure and log
both battery voltage and current for his electric vehicle project. |
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| Biodiesel
Blends in Space Heating Equipment |
Issue 97: A government-sponsored report
on the use of biodiesel and heating oil blends for home heating. |
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| SolarDecathlonScoring.xls |
Issue 96: Solar Decathlon scoring details. |
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| Energy
Policy Act of 2003, House Passed Version |
Issue 95: Energy Policy Act of 2003. Note: the Committee version
was promised, but since then it was passed in this form by
the full House. |
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| New
Apollo Dear Colleague |
Issue 94: Representative Jay Inslee's letter
to colleagues in support of the New Apollo Project. |
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| Apples
& Oranges ’02 Technical Appendix |
Issue 90: Wind turbine Apples & Oranges - technical appendix. |
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| PV
Wire Sizing |
Issue 86 and 93: Spreadsheet for PV array wire sizing (copper only). |
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| CF
Bulb Spreadsheet |
Issue 86: Compact fluorescent lighting financial payback
spreadsheet. |
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| Midnight
Special |
Issue 84: Battery-based inverter system design for electricity backup during utility outages. |
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| Brandt
EV evaluation spread |
Issue 77: Spreadsheet
for evaluating electric vehicles. |
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Article (pdf)
Board
layout (gif file)
Board
layout (ps file) |
Issue 75: Pulse-width-modulator (PWM) circuit. |
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| NolanDecimate.zip |
Issue 74: Tim Nolan's data-logging Decimate
programs. |
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| damdereg.pdf |
Issue 73: Public Citizen's report on dams
and their relationship to utility deregulation. |
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| mark8.pdf |
Issue 43: Build Your Own 12 VDC Engine generator. Includes Mark 8 field controller (version 8.3) circuit schematic. |
