renewable-energy / Green Building & Sustainable Home Renovation Information & Advice

One of the biggest drawbacks to renewable energies like wind and solar, is that it is unpredictable. This presents a challenge to grid operators, as they struggle to meet demand while compensating for calm winds or clouds. One method of balancing supply and demand that is garnering some attention lately, is pumped stor...

A project started in 2002 by Verdant Power Inc. saw tidal turbines placed 10 metres deep in the East River of New York, taking advantage of the reliable tidal surge of Long Island Sound.  Spinning silently at 35-40 rpms for 18 hours a day in a 4 knot current, tidal turbines eliminate two of the more common complaints a...

Bullfrog’s green electricity comes exclusively from wind and hydro facilities that have been certified as low impact by Environment Canada under its EcoLogoM program. Their natural gas is presently sourced in Quebec by collecting methane escaping from a landfill site. A common question seems to be "How do they ensure t...

  Solar thermal panels in cold climates are at risk of freezing in winter, so in the North, we use a glycol mix as a heat transfer fluid. This prevents panels from freezing but introduces new problems in the summer months when they are at risk of overheating.  There are two main types of residential solar thermal heate...

This is the third piece in a blog series written by Craig Anderson as he documents the design and construction of an off-grid LEED Gold passively-heated home. See post 1 of the off-grid homes blog her, the overview . or post 2 in the off-grid homes blog here covering design and construction choices.  For better or wors...

Recent articles have praised major public investments in biomethanization plants around Canada and North America. These huge chemical plants produce renewable natural gas (RNG) which is a pipeline-quality gas that is fully interchangeable with conventional natural gas and so can also be used in natural gas vehicles. RN...

How to set up a home solar energy system Our future truly depends on us continuing to develop and implement renewable energy systems. In Canada, Ontario is at the forefront of that movement by offering strong financial incentives for homeowners to produce their own energy. Some of the other provinces seem to be lagging...

What is the cleanest energy?  Despite how commonly  the term ‘clean energy’ is used, there is actually no such thing. At least not in the power delivery market; there are only various levels of ‘dirty’ energy. Starting with the worst and moving up, that would in general be - coal, oil, natural gas and propane, wood and...

In 1996, this off-grid house designed by architect Martin Liefhebber was one of two concept homes selected by the Canada Mortgage and Housing Corporation (CMHC) as part of their Healthy Housing Design Competition. What was to be built was a three-bedroom semi-detached home on a small lot in downtown Toronto, And beyond...

What is a solar thermal collector? A photovoltaic (PV) solar collector converts solar radiation into electricity, but a solar thermal collector is much simpler than that. It refers to a device that collects heat directly from solar radiation. That can be as simple and rudimentary as water being pumped through a black t...

How to heat and live in a tiny house in a cold climate? Are tiny houses a good investment? That depends on how you want to live and how well they are built. Small homes are more affordable and eco-friendly that large homes, but are tiny homes on wheels for sale locally green? Read here to find out if tiny houses are go...