Rank 1: HP
Up three places, HP is now the top scoring company - strongest on sustainable operations and energy criteria but could improve on green products criteria.
Rank 2: Dell
Up eight places, Dell scores best on energy criteria with a strong target to reduce emissions by 40 percent by 2015 but scores poorly on green products.
Rank 3: Nokia
Down two places, Nokia loses its leadership position to HP and Dell over energy criteria but scores well on green products and sustainable operations.
Rank 4: Apple
Up five places, Apple is now a joint top scoring company on green products and relatively strong on sustainable operations, but scores poorly on energy.
Rank 5: Philips
Philips gets a strong score along with Sony for supporting progressive clean energy policy and on energy criteria overall. Down two places.
Rank 6: Sony Ericsson
Sony Ericsson gets a joint top score on green products and good sustainable operation score but is weak on energy criteria. Down four places.
Rank 7: Samsung
Down two places, Samsung scores best on sustainable operations but needs to improve on energy criteria, especially on sourcing more green power.
Rank 8: Lenovo
Up six places, Lenovo scores highest on sustainable operations but needs to set strong goals to reduce carbon emissions and boost renewable energy use.
Rank 9: Panasonic
Down three places, Panasonic gets one of the highest scores on greener products but scores poorly on energy, and needs to have a clear plan on how it can cut carbon emissions and boost renewable energy use.
Rank 10: Sony
Down four places, Sony receives a penalty point for lobby against stricter energy efficiency standards in California. However it also received top scores for supporting ambitious climate targets in Europe.
Rank 11: Sharp
Sharp supports a new renewable energy law in Japan but scores poor on all sustainable operations criteria. Stays in 11th place.
Rank 12: Acer
Acer scores poorly compared to major competitors, good on hazardous substance phase out but poor on energy criteria. Stays in 12th place.
Rank 13: LG Electronics
Up one point, LGE has weak emissions reduction targets and needs to increase renewable energy use.
Rank 14: Toshiba
Up three places, Toshiba has made some progress on phasing out hazardous substances but needs to improve on energy criteria.
Rank 15: RIM
New to the Guide, RIM needs to improve reporting and disclosure of its environmental performance compared to other mobile phone makers.