WATT could go wrong logo
Module 02

System Designer. Select Architecture.

A solar calculator for DIYers that balances ballpark feasibility with strict safety constraints. Because when it comes to electricity, you want to know what could go wrong before it does.

What type of system are you building?

Off Grid / Daily Use

Your primary power source for daily energy needs in homes, shops, offices, or studios

  • •Power your space every day
  • •Battery sized for autonomy days
  • •Panels must recharge battery daily
  • •Full cost breakdown with recommendations

Backup / Emergency

Grid-tied system with battery backup for outages in homes, shops, offices, or studios

  • •Keep critical loads running during outages
  • •Select your backup power needs
  • •See recharge time estimates
  • •Flexible sizing based on budget

Get Recommendation (Easy Mode)

Tell us your goals and we'll automatically design a complete system balancing your priorities.

  • •No technical jargon required
  • •Tailored to your budget and setup skills
  • •Instantly generates compatible hardware bundles
  • •Compare cost vs. quality options

Everything You Need to Design Safe Solar.

From energy calculations to wire sizing, we have got you covered.

01

Smart Calculations

Automatic 1.25x headroom and voltage drop calculations ensure your system is safe and efficient

02

Safety First

Built-in safety checks and wire gauge recommendations keep your installation up to code

03

Real Pricing

Three tier options from budget builds to gold standard equipment with current market rates

04

Share & Export

Export PDF reports with QR codes linking back to your design for easy collaboration