The Sweet Spot Solar Advantage: You Get What You Pay For
Sweet Spot Solar is committed to finding the best possible configuration of modules and inverters to maximize energy production while giving you peace of mind with industry-leading warranties and the best available technology. If you're putting something up on your roof for 30+ years, only high quality equipment should be used.
This is one of the reasons why we use primarily monocrystalline solar modules and micro-inverters made by Enphase Energy.
Many of our competitors will quote systems using less expensive polycrystalline modules and string inverters, or two-in-one micro-inverters made by companies like AP Systems. We have serious reservations about this two-in-one technology in particular and believe that heat dissipation is likely to be a problem thereby reducing the lifespan of those inverters and their efficiency. String inverters are ancient technology in the solar world. You should ask for the best!
We want to show you how equipment selection makes a difference using a sample house from Nanaimo BC. This house has a south facing roof with minimal obstructions.
Many of our competitors would quote an array composed of 28 modules in two rows of 14 in portrait orientation for those roof, and they may charge $2.80/Watt installed. The array would look like this. Due to the higher profit margin and less time required for installation, they often push string inverters or a two-in-one micro-inverter like the AP500.
If the modules are blue (instead of black), you're getting the lower quality polycrystalline modules. We have tested extensively polycrystalline and monocrystalline modules at our site on Gabriola Island and there is a noticeable difference in real world performance in this environment.
This array would generate the following energy annually.
By contrast, Sweet Spot Solar would install monocrystalline modules and use micro-inverters like the Enphase M250 (with a 25 year warranty; and from the largest micro-inverter company in the world) for around $2.90/Watt on this house. Our bid would likely come in a few hundred dollars higher as a result but look at the difference. Here's what monocrystalline modules look like (black) and how this array performs annually.
Not all systems are the same, and our array using higher quality equipment generates 10% more energy. This represents a better investment and you'll never regret buying quality.
If we used the industry-leading LG320 monocrystalline module and the Enphase IQ6+ micro-inverter (system cost would be in the $3.00-3.10/Watt in this case), annual performance would be 10,284 kWh. Over 30 years, this adds up to a 40,000+ kWh difference between us and our competitors, or more than $10,000 in energy using a rate multiplier of 5%/year.