We also had this interpretation verified by the California Energy Commission Building Standards Office Outreach & Education Unit in June of 2023. Specifically for newly constructed single-family buildings including ADUs, dig deep into page 354 of the 2022 Building Energy Efficiency Standards to find Exception 2 to Section 150.1(c)14: No PV system is required when the minimum PV system size specified by section 150.1(c)14 is less than 1.8 Kw. Once your ADU is more than 1125 sqft, no matter what climate zone you are in, your project will need solar (unless the ADU is a conversion or an addition, as those are entirely exempt from the solar requirement). In general for Greater San Diego: all small (<620 square feet) ADUs may be exempt from solar requirements, while units above that threshold in certain climate zones will require solar. Do I need to install solar panels for my Accessory Dwelling Unit?Ĭalifornia state law requires that all new construction – including newly-built accessory dwelling units – must have solar panels, BUT there are important exemptions to this rule. Read on to learn when and why you need to install solar panels onto your new California ADU. You may also hear mixed information about whether solar is or is not required on accessory dwelling units (ADUs), and the reason for that is because the regulations have been changing… plus local jurisdictions are mixed in their interpretation & application of the code.īut don’t worry, we stay up to date on changes so you can be informed of all the key regulations and how that translates on your ADU project. Sign up for free to get started today.You may have heard that the state of California is making an effort to move all new construction in the direction of sustainability and renewable energy. When you receive multiple solar quotes through EnergySage, the two of these components combine, allowing you to save 15 to 25 percent on the cost of solar compared to going solar outside of EnergySage. This is where EnergySage can help: we take the hard work out of finding, calling and trying to compare quotes from different installers, by gathering custom solar quotes from local installers on your behalf and putting them in an easy-to-compare, side-by side format. Transparency can be trickier to put a price tag on, but for a market that has historically been opaque, knowing what equipment will be installed on your roof–and the quality of that equipment–helps to ensure you’re getting the best solar solution for your needs. The competition effect means that each additional quote you receive for solar will help you to find the right solar panel system at the right price. There are two primary reasons that comparing multiple solar quotes can save you money: competition and transparency. Why? Comparing multiple solar quotes saves you money. With that in mind, most solar shoppers in the US compare two to five solar quotes before making a decision. Solar is a major purchase, and one that is often accompanied by significant complexity. How to get the best price on solar panels in San Diego, CA While it’s not a large factor, paying for permits and your interconnection fee to the grid will add a little to the top of your total solar installation price. You may opt to pay more for a more reputable company with better reviews and a shorter time period until installation. Solar companies all charge different labor rates for their work. Your solar installer will also charge for the difficulty of the installation, meaning if you have a complex roof your system may cost more. The cost of a solar panel installation doesn’t just come from equipment. The type of panel you install (typically monocrystalline, polycrystalline, or thin-film) directly impacts the overall quality of your installation. Like any product or appliance, solar panels come in varying quality which can be highly dependent on brand. Importantly, the average per-unit price for solar decreases with increasing system size. The bigger your solar panel system, the pricier it will be. The price you pay for solar depends on many factors: System size What determines the cost of solar panels in San Diego, CA?
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