On-Grid Renewable Energy Systems
For many years, solar, wind or microhydro systems were the domain of off-grid locations.
The last several years have seen a tremendous worldwide awareness and uptake of renewable energy technologies. Europeans have paved the way, with innovative policies to encourage and R&D support to develop products, and the education of an entire new workforce has had a dramatic impact on the whole renewable energy sector.
Here in Canada, we lag about 10 years behind Europeans. For the last few generations, we have existed in a playground of cheap, abundant energy and as a consequence, we have become complacent about the very energy that sustains our lifestyles.
In British Columbia, we enjoy the third cheapest electricity rates in North America!
Despite what you might hope you are hearing, and despite some slow progress in the right direction, Canadians have yet to see the bold type of political actions that have enabled European nations to thrive in this sector.
Economics: No matter how you slice it, in BC with it's cheap power rates, the economics are not favorable. A 1 kW PV system will produce on average 5 kWh per day in Southern BC. About $0.30/day at $0.06 per kWh. Works out to about $100 a year of power for a system that will cost you around $10,000 to purchase. Of course, as electricity prices increase, support for renewables increase, and the costs go down, this equation will only improve.
Renewable Energy Systems Are Expensive!
More and more people are investing in renewable energy systems today to protect them from whatever the future may bring. It gives them direct feedback as to how much energy is being produced. The self-reliance and satisfaction of producing your own energy is hard to quantify.
People purchase grid tie systems because they want to do their part by reducing their impacts and generating their own energy.
Grid Intertie Direct (without batteries).
These systems are the simplest, and the most cost effective in terms of $ per kW of electricity to produced. They work just like any other appliance in your home - with the notable exception is they create electricity and push it backwards into the power grid. These systems are extremely scalable and flexible. Starting points around $10,000 and the sky is the limit from there.
Grid Intertie / Backup Systems (with batteries).
These systems add storage in terms of batteries. This gives you more flexibility, in terms of having a reserve energy system that will operate when the grid goes down. It also allows flexibility in terms of buying and selling power at different times of the day (to take advantage of time of use electricity metering).
To get the best performance from a grid intertie system, one must consider energy efficiency upgrades.
The average Canadian home uses between 700-1500 kWh per month. A highly efficient home can reduce this to 60-500. How can you realize these kinds of improvements?
Every $1 you spend on efficiency will save you $5 in energy generation.
The following steps are ranked in order of least capital cost to highest. Start at the top to get the best bang for your buck.
Natural Resources Canada Office of Energy Efficiency
Canada ranks an embarrassing 27th out of 29 OECD nations in terms of energy use per capita
Gordon Handford. Customer walking his environmental talk with one of the largest privately-owned Grid-Tie PV systems in British Columbia.
Grid-tie / backup power system. Faced with a desire to to generate their own power, and critical need to keep power on during sometimes extended power outages, EA designed and installed a very customized system.
Grid-tie / backup power system. Small grid-tie battery backup system to keep the lights on during often extended outages down a country road.
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