Editing 2008-051

From: "Sims, Paul" <Paul.Sims@boiuk.com> Date: 2008-12-31 (Wed) 06:31:28 AST To: <info@solarns.ca> Subject: Residential Property Query re excess energy I hope you may be able to provide me with some advice or at least point me in the right direction ... I bought a property in the Pictou area of Nova Scotia approximately 6 months ago. The property was built 2 years ago and benefits from a modern and efficient thermal heating system that runs the air conditioning in the property. To make the property even more efficient I would be interested in installing a solar powered system ideally (and if possible) with a view to supplying the general electricity needs of the property rather than just the hot water. At present the property is only used for part of the year as we currently live in the UK. On the basis that the system, at times, would clearly produce more electricity than was needed in a vacant property are there any schemes whereby you can effectively sell the excess power back to the grid ? This would obviously be a determining factor in support of any future investment given our limited use of the property. Many thanks Paul Proposed response (Jamie) Selling electricity back to the power grid is called Net Metering. At present you can apply to net meter on your electrical service in Nova Scotia through the local power utility, Nova Scotia Power Incorporated (NSPI). As of this writing (March 2009) you can only sell them enough power to bring your net power usage to zero over a year. Recent plans may increase this period of time, but they remain plans being negotiated between the province and NSPI. Whether you can generate enough electricity over the year to match your consumption depends on your electrical usage. If your cottage is electrically heated and air conditioned you may need to generate a fair bit of electricity. You can generate electricity by several methods. Generally a windmill is the most practical in rural Nova Scotia, but may not do well in untended operation. Photovoltaic panels will be more expensive, but operate with less maintenance. If your property has a stream with a significant drop you may be able to use a micro-hydro turbine. All of these systems can be complicated and will depend on the specific site details. Our corporate members can provide recommendations on all of these options and what may suit your property and budget.

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