Tuesday, 29 August 2017

Your Return On Investment (ROI) For Solar Can Be Up To 5.8%

With our current sale on equipment, a roof-mounted solar array composed of 16 modules (4.24 kW DC) will cost you $7999 (all-in). If the installation comes to $4000, your full installed cost is $11,999.

This can return 5.8% for you and in 25 years it would generate $45,000 worth of electricity.

Here's how this works. This array will produce around 5000 kWh/year using Kamloops as a baseline on a house with a 20 degree pitched roof facing due South.

The average house in BC consumes 11,000 kWh/year. Since BC Hydro charges a 50% premium on electricity (so-called Step 2 pricing), most of the 5000 kWh/year produced by the solar array will go toward reducing Step 2. Currently, Step 2 electricity with the 5% rate rider and GST works out to 14.19 cents/kWh.

Over the past 7 years, BC Hydro rates have increased by 50%. We don't have a crysal ball to know what rates will look like in the future, but they won't go down! Using this as an annual average rate increase, we get the following table.


This table shows in the right-hand column the annual expected saving in a cumulative way. By year 12 the array has paid for itself. Most solar arrays will last 30+ years. We did include a degradation calculation (see decreased output per year) in this model since solar modules will lose on average about 0.1% of output over time.

The following graph shows the break even point.



Of course, financials are only part of the picture. A lot of our clients also want to "do the right thing" and to show how individuals can make a difference.


Thursday, 24 August 2017

End Of Summer Sale

Our best prices ever! Limited time offer on these grid-tie, battery-free systems.


Wednesday, 23 August 2017

A year in the life of a solar array on Gabriola Island

On August 23, 2016, a new solar array was commissioned on Gabriola Island. This array is composed of 28 LG310 Watt modules and Enphase M-250 micro-inverters. It was installed on this stunning garage.



Sweet Spot Solar estimated annual production for this 8.68 kW DC array at 9765 kWh/year under ideal conditions on an annualized basis.

For the year, the array generated 9290 kWh. For this year, the longer than normal winter combined with several weeks of smoke from forest fires reduced output by 4.87% from our original estimate.


Note the deep drop in production between the months of November and February. This is typical of a solar array at this latitude. During the Spring, Summer, and early Fall a solar array makes lots of extra power that gets banked as a credit with net metering through your smart meter to offset your winter bills. All without batteries!

From an environmental performance perspective, our monitoring software yielded the following calculations.


Wednesday, 9 August 2017

Our big tracker is in the news!

An article in InfoNews-Kamloops today profiles the tracker owned by our clients Penny and Charles.

Even with the incredible amount of smoke in the area for more than a month, this tracker is making enough power daily to power 2-3 average homes.





The article states:
After installing the largest sun tracking solar panel in B.C. on their farm in Black Pines just north of Kamloops, Charles Hays and Penny Powers expect to never pay for power again.
If all goes according to plan, the power company will pay them.
Charles Hays and Penny Powers hope their story will inspire others.
Charles Hays and Penny Powers hope their story will inspire others.






Thursday, 3 August 2017

Get credit for being sustainable

During the month of July, one of our medium-sized solar arrays generated a credit with BC Hydro of 448 kWh! It only used extra energy from the grid on 2 days. Email info@sweetspotsolar.com to learn more about doing this yourself.