Ecotricity

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

• Ecotricity

• Phone

  3.0 MB

• Laptop

  2.9 MB

First visitiReturningi

1. Homepage

   /

   First visit

   Phone 3.0 MB

   Laptop 2.9 MB

   Returning

   Phone 1.2 MB

   Laptop 0.75 MB

2. Plans

   /for-home

   First visit

   Phone 2.0 MB

   Laptop 2.1 MB

   Returning

   Phone 0.17 MB

   Laptop 0.23 MB

3. Power outages

   /outages

   First visit

   Phone 2.9 MB

   Laptop 3.0 MB

   Returning

   Phone 1.1 MB

   Laptop 1.2 MB

4. Contact

   /contact-us

   First visit

   Phone 2.0 MB

   Laptop 2.0 MB

   Returning

   Phone 0.20 MB

   Laptop 0.20 MB

• Ecotricity’s own files

  This website

  0.81 MB27%

• Google Tag Manager

  Tag manager

  1.0 MB33%

• Facebook

  Advertising and social

  0.21 MB7%

• Hubspot

  Advertising and social

  0.11 MB4%

• 2 more companies

  Cloudflare, Utility, 0.01 MB
  Unpkg, Hosting and delivery, 0.01 MB

  0.02 MB1%

• Unknown source

  0.88 MB29%

• Scripts

  1.6 MB

• Images

  1.2 MB

• Fonts

  0.26 MB

• Other

  0.05 MB

• Styles

  0.03 MB

1. File · Ecotricity

   ecotricity.co.nz/outages/map-data

   Outages

   0.52 MB

2. Image · Unknown source

   left_circle_6de91c0e9d.webp

   Homepage

   0.33 MB

3. Image · Unknown source

   Meta_1x1_1080x1080px_6465ca55a2_7ebf29a9e8.png

   Homepage

   0.32 MB

4. Image · Unknown source

   banner_1_e4d823815d.png

   Outages

   0.27 MB

5. Image · Ecotricity

   banner_mobile.webp

   Homepage

   0.21 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. Choice

   Check every marketing tag still earns its place: 3 companies

   Every page · Facebook, Google/Doubleclick Ads, Hubspot

   up to 0.24 MB

2. Fix

   Ship less of your own code: scripts and styles that did not run while the homepage loaded

   Every page · Ecotricity

   up to 0.17 MB

3. Choice

   Unpkg: you choose whether it loads

   Every page · Unpkg

   up to 0.16 MB

4. Fix

   Cut 9 fonts down to the characters used

   Every page · Ecotricity

   up to 0.13 MB

5. Fix

   Resize 6 images to the size screens show them

   Every page · Ecotricity

   up to 0.09 MB

If this website had 100,000 page views a year, they would cause about 18 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. Ecotricity’s is 2.01 MB.