Rule 21 refers to the generator interconnection requirements of each California Investor-Owned Utility (IOU). A years-long process has been underway to update Rule 21 with “smart inverter” requirements. Rule 21 requires inverters to have new grid support functions and a new certification under UL 1741 SA. Each new inverter also gets a new nameplate label that identifies it as a “Grid Support Utility Interactive Inverter.”
New smart functions, such as voltage and frequency ride-through or soft start ramp rate, will pave the way for further solar penetration into the California grid and help to better manage the fluctuations caused by distributed energy resources (DER). These new functions have a stabilizing effect on the grid as more DER is added to it. Fronius has always been a driving force when it comes to inverters’ Grid Support Functions and has years of experience from highly solar-penetrated markets such as Germany or Italy.
Fronius is currently shipping Rule 21 compliant residential inverters (the Fronius Primo 3.8-8.2 kW) and commercial inverters (the Fronius Symo 10.0 – 24.0 480V). Beginning November 6, 2017, the Fronius Primo 10-15 kW and the Fronius Symo 208V models will also ship with Rule 21 compliance.
Input your address to see if it is solar friendly and how much you can save with solar.
Great. Your address is perfect for solar. Solar incentive is still available. Select monthly utility cost and calculate the size of solar system you will need now.
| kw System size | years Payback period | Lifetime savings |
No money down, 100% finance is available.
|
You design, we deliver. Enjoy solar! Get Started |
CompanyAbout Solar QC Contact us Career Promotion Program |
About SolarSolar Beginner 101 Solar QC Blog News Feed FAQ |
How It WorksEasy Step 1234 2 Min Design DIY Price Checker Design DIY |
Installer Sign UpSign up to receive more high quality fresh leads. Sign up now |
|
Go Solar with Solar QC. There’s no need to shop around since Solar QC directs manufacturers to our customers with the best prices in solar industry.
|
Solar InstallerInstaller Review Join Us Finance |
ProductPanel Inverter Racking BOS |
World Class BrandCanadian Solar Solar Edge Dual Rack |
Installer APP DownloadIOS Ipad Android |
Term & Condition• Privacy Policy• Site Map• COPYRIGHT © SOLAR QC 2016 - 2024 TEL:(818) 254-8209
Welcome to the Solar QC Website. This site equips homeowners with information regarding the most effective solar products and provides access to expert solar installers and manufacturers. The information listed in the Terms & Conditions provides a list of the services provided by solarqcgroup.com with specific user obligations in reference to content, conduct, company disclaimers, copyright, and privacy. The Terms & Conditions described are designed to protect the users and solarqcgroup.com. By accessing this website, the user automatically agrees with the content of the Terms & Conditions.
A solar PV system is custom-designed for your home. Final solar system price may vary based on your location, monthly utility bill, government incentives and rebates, the condition of your home, and local installation prices. Solar PV system output and estimated savings are calculated based on several factors including product type, system production, geography, weather, shade, electricity use, full utilization of the 30% solar investment tax credit, and utility rate structures and rate increases. Savings on your total electricity costs are not guaranteed. Financing options and terms vary by location, and may not be available in all areas. Solar QC is neither the lender nor the project installer. Solar QC License# 1130591
Comments