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Calculator Updates

11/24/2014

The CSI Calculator has been updated to allow systems with CEC-AC ratings up to 175% of the inverter rated capacity.

4/14/2011

The CSI Calculator has been updated to display estimated monthly kWh production for the proposed and reference PV systems. Please be aware that actual performance of an installed PV system is based on numerous factors, including some factors that may not be considered in the CSI-EPBB Calculator. While this calculator relies on industry-standard assumptions, and is driven by NREL’s PV Watts v. 2 calculator, there may be other factors that affect the output of your PV System.

10/27/2010

The CSI Calculator has been updated to include support for tracking systems when calculating estimated production and incentives for systems that are applying for Performance Based Incentives (PBI).

7/30/2009

The CSI EPBB Calculator User Guide has been updated to accommodate the changes made to the CSI program that took affect July 1st, 2009. These requirements include, but are not limited to, new shading study requirements as well as a requirement that PV modules be tested and approved with the CEC's new testing requirements, per the SB 1 guidelines.

6/29/2009

The CSI EPBB Calculator has been updated to accommodate the changes made to the CSI program that take affect July 1st, 2009. These requirements include, but are not limited, new shading study requirements as well as a requirement that PV modules be tested and approved with the CEC's new testing requirements, per the SB 1 guidelines.

The new CEC SB1 Guidelines and the CSI Program Handbook can be found here.

2/13/2009

The CSI EPBB calculator web site has been enhanced to include support for the Multifamily Affordable Solar Housing (MASH) program. MASH provides solar incentives on qualifying existing affordable housing multifamily dwellings. The goals of the program are to:

  • Stimulate the adoption of solar power in the affordable housing sector;
  • Improve energy utilization and overall quality of affordable housing through the application of solar and energy efficiency technologies;
  • Decrease electricity use and costs without increasing monthly household expenses for affordable housing building occupants; and
  • Increase awareness and appreciation of the benefits of solar among affordable housing occupants and developers.

12/3/2008

The CSI EPBB calculator web site has been enhanced to include support for other solar electric generating technologies. Although other solar electric generating technologies includes concentrating photovoltaics, these products are termed "non-PV" in Section 2.2.3 of the January 2008 CSI Handbook and Chapter 3 of the December 2007 Senate Bill 1 Guidelines. To be eligible for the CSI program as an other solar electric generating technology, these systems must be approved and follow the guidelines set forth in Section 18 of the CSI Handbook. A full list of approved other solar electric generating technologies will be maintained on the Go Solar California web site.

The calculator for standard PV systems hasn't been changed, other than being reformatted.