How to use this site

You can use the Gateway to:

Estimate the costs and benefits of microgeneration and energy efficiency projects using our online calculators.

Enhance your website by embedding one of our tools in your choice of colour scheme and giving your customers easy-to-use microgeneration calculators.

Power your own design of calculator or web application by subscribing to our application programming interfaces (APIs)


  1. Register
  2. Click on "Tools"
  3. Click on "Activate now" next to the tool you want to try
  4. Select the Basic license
  5. Complete the license agreement
  6. Click on "Use tool"
  7. You can export the output as PDF
  1. Register
  2. Click on "Tools"
  3. Click on "Activate now" next to the relevant tool
  4. Select the Premium license
  5. Make secure payment as applicable
  6. Click on "Embed Tool"
  7. Select the colour and width required
  8. Cut and paste the code provided into your website (call us if you need help here)
  9. Benefit from improved customer service amd more efficient sales
  1. Register
  2. Click on "Tools"
  3. Click on "Activate now" next to the relevant tool
  4. Select the Professional license
  5. Make secure payment as applicable
  6. Click on "API"
  7. Use the documentation which will give your web team the protocols they need to use our APIs in your own design tools