2025-11-12 13:17:23 From Art Hunter to Everyone:
	jmwigginconsulting@gmail.com
	
2025-11-12 13:48:43 From Dave Dougherty to Everyone:
	Q:  What role(s) could sand batteries play at scales from the household to industries to cities?
	https://technologicinnovation.com/2025/09/02/sand-batteries-explained-the-future-of-affordable-sustainable-energy-storage/
	
2025-11-12 13:52:00 From Richard van der Jagt, MD, U of Ottawa to Everyone:
	this is another example of what Geoff Strong, Meg Sears and I sent in as document to the ENVI committee that we could help the climate and the econmomy simulutanelously
	
2025-11-12 13:52:23 From Art Hunter to Everyone:
	Q:  The existing sewage and storm sewers are a vast organization well engineered in every city.   Is it worth it to try to capture this energy and pump it up to 45C for hot water and building heating?
	
2025-11-12 13:56:31 From Bob Walker to Everyone:
	Peter,  Unfortunately I have another meeting at 2 pm.  But could you perhaps ask Michael to describe what the connection of the thermal network to the household would look like with household cost implications.  I think this is a very positive story that plays to affordability.
	
2025-11-12 14:00:31 From Martin Green to Everyone:
	Waste heat in the sewers is about 10 percent of the annual demand for buildings in almost any community.
	
2025-11-12 14:00:56 From John Hollins to Everyone:
	Michael, why has this not already happened in Ontario, with its fleet of Candus?
	
2025-11-12 14:07:51 From Art Hunter to Everyone:
	(Q) Parliament hill in Ottawa has district heating.   Is it in need of modernization?
	
2025-11-12 14:19:33 From Peter MacKinnon, uOttawa, Engineering to Everyone:
	Richard you can follow Meg as I suspect your on the same topic given your earlier comment
	
2025-11-12 14:29:23 From Richard van der Jagt, MD, U of Ottawa to Everyone:
	in our submission to the ENVI committee we gave examples of countries that have successively adopted renewable energy to their advantage
		
2025-11-12 14:52:08 From Art Hunter to Everyone:
	https://youtu.be/JwqLO1CPqLw    Alberta Geothermal system
	
2025-11-12 14:54:58 From Dave Dougherty to Everyone:
	Powering our city’s future sustainably through district energy systems | Hydro Ottawa
One exciting project that’s coming online is at The Ottawa Hospital’s new campus. The central utility plant there is the heart of the hospital’s heating and cooling equipment. 
 
“We’re building it for the first phase of the hospital and we’re able to expand the actual equipment that's in the building to handle the expansions that the hospital will go through over the coming years,” Heuff says. “We also have plans to then expand pipes off of the campus and to other areas that will be serviced by more commercial-style development. We’ve been speaking with developers on the Carling Avenue corridor where there's a lot of high-rise development that's going on as a result of the intensification from the light-rail train that's going by there.” 
 
As such, those buildings will be able to take advantage of some of the waste heat from the hospital’s central utility plant. The hospital’s system itself aims to be the most sustainable hospital energy system in Canada when it’s built.      
 
For more than a century, Hydro Ottawa has built a foundation of expertise in energy distribution. They are now poised to leverage that deep-rooted knowledge to pioneer district energy solutions, which will bring unparalleled resilience and redundancy to Ottawa, extending benefits to commercial partners and ensuring maximum energy use. The utility is committed to applying its proven skills to create efficient, interconnected networks that eliminate waste and enhance reliability. This approach will bring robust, multi-sourced heating solutions to Ottawa's critical infrastructure and beyond, demonstrating their dedication to maximizing energy potential for a sustainable future.