Guelph Hydro powers our community! As the electricity supplier for Guelph and Rockwood, the team at Guelph Hydro is responsible to maintain the electricity lines to homes and businesses in our community 24 hours a day, 365 days a year. It is our job to make sure that electricity is there when and where you need it. At Guelph Hydro we are proud to power our community!

Your Home and Business Industrial and Commercial Our Community
GHESI is proud to serve more than 47,000 customers in Guelph and Rockwood. In 2007, our Customer Satisfaction Rating as measured by Simul Corporation, was 93%, almost 10% higher than the provincial average. Reliability of supply is essential for our more than 4,300 industrial and commercial customers. GHESI has one of the highest reliability rates in the province and, last year, the average length of time that any area was without supply, was 35 minutes. GHESI is a leader in community energy conservation programs, including the City of Guelph's groundbreaking Community Energy Plan. GHESI also provides significant sponsorship to many community charities serving children in need or those that promote repsonsible use of our resources.
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Merger News and Details!
Merger News and Details....
GHESI Community News
4 July, 2008
City of Guelph Advertisement in Guelph Tribune...more
20 June, 2008
Storyboard Information on the Merger
...more
20 June, 2008
Use Less and Win Big this Summer! ...more
10 June, 2008
If you wish to speak to Guelph City Council July 21 regarding the proposed merger ...more
9 June, 2008
Guelph Hydro to host public information sessions on proposed merger ...more
26 May, 2008
GHESI Staff Participate at Career Day ...more
26 May, 2008
GHESI recommends merger to Guelph City Council ...more
21 May, 2008
Energy Conservation Week Media Release ...more
16 May, 2008
Proposed Merger with Horizon Approved by Board ...more
Energy Facts
Half the energy your home uses is for heating and cooling! ...more
Energy Programs