Greenpeace has just released its latest ‘Guide to Greener Electronics’ report that ranks the top 18 technology manufacturers for their energy efficiency. Nokia and Samsung where some the best performers but the likes of Nintendo and Lenovo are having troubles.

The report ranks the manufacturers of personal computers, mobile phones, TVs and games consoles according to their policies on toxic chemicals, recycling and climate change.

Nokia was the star performer with a score of 7.5, and this was mainly attributed to its comprehensive voluntary take back program, which spans 84 countries and provides almost 5,000 collection points for end of life mobile phones.

Samsung maintained its second position in the rankings with a score of 6.9. Some of the positives the report highlighted about Samsung was the fact that since 2007 all its new LCD panels are PVC-free and played a role in encouraging the market to phase out PVCs. It has also launched a range of BFR-free mobile phones and halogen-free memory chips and semiconductors.

Rounding out the top three was Sony Ericsson, which scored 6.5 and was labelled as one of the best performers on the toxic chemicals criteria and energy usage.

But on the over end of the spectrum some companies are living up to their environmental responsibilities. Nintendo was the worst performer on the list with a score of 1.4, due to the fact that its greenhouse emissions have increased.

The entire list is as follows:

1. Nokia – 7.5
2. Samsung – 6.9
3. Sony Ericsson – 6.5
4. Philips – 5.9
5. Toshiba – 5.7
6. Motorola – 5.3
7. Sharp – 5.1
8. Sony – 5.1
9. Apple – 4.9
10. Panasonic – 4.9
11. LG Electronics – 4.7
12. Dell – 4.7
13. Acer – 4.7
14. HP – 4.5
15. Microsoft – 2.7
16. Fujitsu – 2.7
17. Lenovo – 2.5
18. Nintendo – 1.4