Nova

1. Oct 2026

First measured October 2026.

1. Toast Electric, 0.78 MB
2. Electric Kiwi, 1.55 MB
3. Powershop, 1.57 MB
4. Meridian, 1.63 MB
5. Contact, 1.68 MB
6. Octopus Energy, 1.74 MB
7. Lodestone, 1.78 MB
8. Ecotricity, 2.01 MB
9. Grey Power Electricity, 2.32 MB
10. Genesis, 2.96 MB
11. Pulse, 3.75 MB
12. Nova, 3.93 MB
13. Mercury, 7.18 MB

1. B
2. D
3. D
4. D
5. D
6. D
7. D
8. E
9. E
10. F
11. F
12. F
13. G

LightestHeaviest

• Nova

• Phone

  6.5 MB

• Laptop

  8.8 MB

First visitiReturningi

1. Homepage

   /

   First visit

   Phone 6.5 MB

   Laptop 8.8 MB

   Returning

   Phone 2.9 MB

   Laptop 5.2 MB

2. Plans

   /electricity/plans

   First visit

   Phone 4.9 MB

   Laptop 4.9 MB

   Returning

   Phone 0.96 MB

   Laptop 1.0 MB

3. Moving house

   /help-advice/moving

   First visit

   Phone 4.7 MB

   Laptop 4.8 MB

   Returning

   Phone 0.53 MB

   Laptop 0.43 MB

4. Power outages

   /help-advice/emergencies-outages

   First visit

   Phone 4.7 MB

   Laptop 4.4 MB

   Returning

   Phone 0.28 MB

   Laptop 0.29 MB

5. Contact

   /contact-us

   First visit

   Phone 5.6 MB

   Laptop 5.8 MB

   Returning

   Phone 1.4 MB

   Laptop 1.4 MB

• Nova’s own files

  This website

  2.9 MB44%

• Google Tag Manager

  Tag manager

  1.0 MB15%

• Facebook

  Advertising and social

  0.28 MB4%

• JSDelivr CDN

  Hosting and delivery

  0.09 MB1%

• Google Analytics

  Analytics

  0.02 MB0%

• Unknown source

  2.4 MB36%

• Scripts

  3.3 MB

• Images

  2.5 MB

• Fonts

  0.60 MB

• Other

  0.13 MB

• Styles

  0.12 MB

1. Script · Unknown source

   2.55689b4f.chunk.js.gz

   Every page

   1.3 MB

2. Image · Nova

   powerful-wifi-banner.png

   Homepage

   1.1 MB

3. Image · Nova

   NOVA_11.11.20_0750_Low.png

   Homepage

   1.1 MB

4. Image · Nova

   NOVA_11.11.20_0897_low.png

   Contact us

   0.89 MB

5. Image · Nova

   homepage-29.png

   Homepage

   0.83 MB

Fix

Nothing a visitor would notice

Choice

Removes or delays something

Worked out on a phone and a laptop. The icons show where each saving applies.

1. Fix

   Resize 11 images to the size screens show them

   Home and 2 more · Nova Phone

   Homepage, Electricity, Contact us

   up to 1.6 MB

2. Fix

   Next pages download what the homepage already did

   Every page · Nova

   up to 0.63 MB

3. Choice

   Check every marketing tag still earns its place: 4 companies

   Every page · several companies

   up to 0.23 MB

4. Choice

   JSDelivr CDN: you choose whether it loads

   Every page · JSDelivr CDN

   up to 0.07 MB

5. Fix

   Cut 5 fonts down to the characters used

   Every page · Nova

   up to 0.06 MB

If this website had 100,000 page views a year, they would cause about 36 kg of carbon emissions.

Built to grade A (under 0.53 MB a page), the same page views would cause about 4.8 kg.

A grade C badge needs a typical page under 1.41 MB. Nova’s is 3.93 MB.