22 chapters, from "what is energy?" to designing, installing, and maintaining a real photovoltaic system — plus SEFE, a companion app where every calculator, simulation, and worked example from the book runs live on your own device.
Every chapter explains the idea in plain English before the equations arrive — and when they do, every symbol and every worked example uses real numbers.
15 calculators and a drag-and-drop workbench let you size a real off-grid, on-grid, or hybrid system step by step, on your phone.
A self-test for every chapter, 276 solved practice problems, and a 320-term glossary — with your progress tracked as you go, entirely on your own device.
A complete, self-contained course in solar energy, written in plain English for students, technicians, teachers, and self-learners. It starts with the basics of energy and electricity and builds up through solar cells, system components, and full system design to nine complete capstone projects — including a chapter on real solar economics in Iraq and the Kurdistan Region.
The companion Teacher's Guide repeats every chapter self-test and practice problem with full answers and explanations, plus notes on using SEFE in the classroom.
Download the Teacher's Guide| Ch. 1 | Energy and Power in Everyday Life |
| Ch. 2 | Electricity Basics |
| Ch. 3 | The Sun and Solar Energy |
| Ch. 4 | How Solar Cells Work |
| Ch. 5 | Solar Panels in Practice |
| Ch. 6 | Batteries and Energy Storage |
| Ch. 7 | Charge Controllers |
| Ch. 8 | Inverters |
| Ch. 9 | Wiring, Protection, and Safety Equipment |
| Ch. 10 | Understanding Electrical Loads |
| Ch. 11 | Solar System Types |
| Ch. 12 | Off-Grid System Design |
| Ch. 13 | On-Grid and Hybrid System Design |
| Ch. 14 | Solar Water Pumping |
| Ch. 15 | Money and the Environment |
| Ch. 16 | Site Assessment and System Planning |
| Ch. 17 | Installation Step by Step |
| Ch. 18 | Testing and Commissioning |
| Ch. 19 | Finding and Fixing Problems |
| Ch. 20 | Maintenance |
| Ch. 21 | Solar Energy in Iraq and the Kurdistan Region |
| Ch. 22 | Capstone Design Projects |
Every calculator, simulation, and lesson from the book, running live on your own device. No account, no internet connection required, nothing ever leaves your phone.
The full course, on your device — 22 chapters, searchable, with a highlighted-word glossary of 320 terms.
15 solar calculators, from load audits to cable sizing to payback — every one shows its working.
13 interactive simulations plus a drag-and-drop workbench where you build a system and run it.
A self-test for every chapter and 276 practice problems, with your progress tracked automatically.
Installs are currently limited to approved testers. To get access, submit the email on your Android device's Google account below — once it's added to the tester list, you'll be able to install the app from the Play Store.