National Grid PLC ADR (NGG) had the highest return between 2005 and 2008 by a US stock in the Utilities Sector, returning 824,847.6%.

ASSET	YEARS	% RETURN
National Grid PLC ADR (NGG)	2005-2008	824,847.62%
Companhia Paranaense de Energia Pref ADR (ELP)	2005-2008	160.01%
Companhia de Saneamento Basico do Estado de Sao Paulo SABESP ADR (SBS)	2005-2008	117.49%
Ormat Technologies (ORA)	2005-2008	99.66%
H2O America (HTO)	2005-2008	79.49%
Spire (SR)	2005-2008	78.03%
Centrais Elétricas Brasileiras SA - Eletrobrás (EBR.B)	2005-2008	74.08%
Companhia Energetica de Minas Gerais CEMIG Pref ADR (CIG)	2005-2008	66.75%
Centrais Electricas Brasileiras (EBR)	2005-2008	66.71%
TransAlta (TAC)	2005-2008	57.93%
NewJersey Resources (NJR)	2005-2008	54.23%
Nextera Energy (NEE)	2005-2008	52.12%
Northwest Natural Gas (NWN)	2005-2008	50.87%
EnergySolutions (ES)	2005-2008	45.13%
American States Water (AWR)	2005-2008	41.62%
Exelon (EXC)	2005-2008	40.72%
FirstEnergy (FE)	2005-2008	40.16%
California Water Service (CWT)	2005-2008	38.96%
Entergy (ETR)	2005-2008	37.66%
Chesapeake Utilities (CPK)	2005-2008	37.5%
Suburban Propane Partners (SPH)	2005-2008	37.44%
WEC Energy (WEC)	2005-2008	36.51%
Sempra Energy (SRE)	2005-2008	35.59%
UGI (UGI)	2005-2008	33.88%
PG&E (PCG)	2005-2008	33.82%