Collins has moved up from the fourth spot where he sat in last year's list, bumping Microsoft's head of PR Alison Perkins off the top spot to the number two position this year.
Anna Shipley, head of comms, UK and Ireland, Nokia entered the table at number three with BT's group director of comms Michael Prescott following behind at number four.
Representing the industry from the agency side was Clive Armitage, CEO, Bite and Giles Fraser, co-founder, Brands2Life who took slots five and ten respectively.
Comms professionals from Sony Europe, O2 and Sony Ericsson also featured in the list.
The Power Book will be released at a party this evening to be hosted at the Glaziers Hall in London Bridge.
2010 technology Power Book list:
1) DJ Collins, director, communications and public policy, EMEA - Google
2) Alison Perkins, head of UK PR - Microsoft
3) Anna Shipley, head of comms, UK and Ireland - Nokia
4) Michael Prescott, group director of comms - BT
5) Clive Armitage, CEO - Bite
6) Nick Sharples, director of corp comms - Sony Europe
7) Glenn Manoff, Director of comms and corp affairs - 02
8) Peter Barron, dir comms/pub affairs, N/central Europe - Google
9) Aldo Liguori, head of global comms and PR - Sony Ericsson
10) Giles Fraser, co-founder - Brands2Life