For Beginners
New to solar energy? Start with the fundamentals — how panels work, what types of systems exist, and what factors affect performance. No technical background required.
Understand Solar. Choose Smart.
Your complete guide to solar systems — understand components, compare options, estimate costs, and make confident purchasing decisions.
Who this site is for
Whether you're just curious about solar or ready to make a purchasing decision, Focus Solar meets you where you are.
For Buyers
Ready to shop or request a quote? Learn how to compare system proposals, understand what suppliers are selling, and ask the right questions before you sign anything.
For Decision-Makers
Evaluating a solar investment? Use our structured guides and calculators to assess system sizing, component trade-offs, payback periods, and long-term ROI.
Explore the documentation
Six topic areas covering everything from basic concepts to technical system design.
Getting Started
Buyer Guides
System Design
Components
Pricing & ROI
Tools & Calculators
Recommended learning paths
Not sure where to start? Follow one of these curated paths based on your goal.
Featured tools
Interactive calculators to help you size, price, and evaluate your solar setup.
System Size Calculator
Estimate system size based on daily energy usage and location. Try calculator
Battery Sizing Calculator
Choose the right battery setup based on your backup needs and budget. Try calculator
Inverter Sizing Calculator
Match inverter capacity with your panel configuration and load profile. Try calculator
Solar ROI Calculator
Calculate your payback period and long-term return on investment. Try calculator
Have a question? We're here to help
Answers to common questions about solar energy and this knowledge base.
General Questions
Common questions about solar energy.
About the Content
Questions about our guides and tools.
Is this site for beginners or experienced buyers?
Both. Beginners should start with the Getting Started section to build a solid foundation. If you're already familiar with solar basics and are evaluating a purchase, head straight to the Buyer Guides or use the Tools & Calculators to run your numbers.
Do I need technical knowledge to use the guides?
No technical background is required. All guides are written for non-technical readers. Technical details — such as system sizing math and wiring specifications — are covered separately in the System Design section for those who need them.
Can I use this site before contacting suppliers?
That's exactly what it's designed for. The goal is to give you enough knowledge to evaluate proposals intelligently, ask informed questions, and avoid common purchasing mistakes before you ever speak to a sales representative.
Are the calculators suitable for commercial projects?
The tools are primarily designed for residential and small commercial systems. For large-scale commercial or industrial projects, the calculations provide a useful starting point, but we recommend engaging a qualified solar engineer for detailed system design and financial modelling.
What should I read first if I'm new to solar?
Start with the first article in the Getting Started section, or follow the 'New to Solar' learning path on this page. It covers what solar energy is, how panels work, and the key decision between on-grid and off-grid systems.
How often is the content updated?
Guides and tool references are reviewed and updated regularly. New articles and calculators are added as the site grows. If you notice outdated information or want to suggest a topic, the feedback link is at the bottom of every page.
Ready to begin your solar journey?
Explore the guides at your own pace, or jump straight into the calculators to start sizing your system.