Encounters

Solar Power ON Nem 2.oPresented by: Ross Williams & Rachael Williams

About The PresentersRoss joined Home Energy in 2009 From East CoastBachelors in Business AdministrationStarted as Operations ManagerBackground in PMPresented on VNEM at Intersolar 2016Now V.P. and heads up operations and business development.

Ross A. Williams

About The PresentersRachael joined Home Energy in 2016Graduated from Penn State in 2007Solar Consultant and DesignerRosss Much Cooler Little Sister

Rachael Williams

BackgroundNet Energy Metering (NEM) has been the foundation of the solar industry for the last 20 yearsWith NEM, the customer/generator passes solar electric power to the utility with a full retail credit which fully offsets charges for purchases of power needed at night or on cloudy days.This is equivalent to using the grid as a battery bank.

WITH Assembly Bill 327 it threatened to change in 2013AB327 allowed the changing of terms of the original NEM (1.0) in each territory when solar capacity reached 5% of utility peak sales. The bill essentially gave the utilities the opportunity to end net metering and the solar industry.We fought to ensure Californians continued to have access to reliable, inexpensive, clean solar power.We won the war with three minor exceptions:The advent and implementation of Non-Bypassable Charges (NBCs)A fixed interconnection fee, to be paid once when the system is interconnectedMandatory TOU for residential customers

NON- BYPASSABLE CHARGESIn NEM 1.0 solar customers only paid these fees on monthly net usageIn NEM 2.0 they are required to be paid on all energy drawn from the gridComprised of:Nuclear decommissioningPublic purpose programsCompetitive transition chargeDepartment of Water Resources (DWR) bond charge, a legacy of Enron contracts in 2001All this amounts to around 2 cents per kWh

NON- BYPASSABLE CHARGES contNBCs are within the minimum monthly bill, not in addition to!NBCs do not apply to solar power produced and consumed on-site (behind the meter).For system additions, there will be a loss of NEM 1.0 status if the increase in system size is more than 10%

nbC EstimatesLow EstimateMid EstimateHigh EstimateSystem Size (kW)457Productivity (kWh/kW)140015001650Exports40%50%60%Avg exports (kWh/mo)187313578NBC Rate$0.020$0.023$0.025NBC Total ($/mo)$3.73$7.19$14.44

Interconnection FeeThis is a fee to be paid when applying for interconnection through the NEM 2.0 programPaid by Home Energy Systems$132.00

Time of Use Metering (TOU)SDG&E NEM 2.0 customers sign up under tiered rates until 120 days after the current rate case is concluded and then can stay on those rates for five years. The rate case is scheduled to end in February 2017.Translation: All NEM 2.0 customers will be put on a TOU tariff in the summer of 2017Best TOU rate options for solar customers:DR-SESTOU-DREV-TOU-2 (For customers with Electric Vehicles)

Green Button Data will help determine best rate option.

Load Profiles/ A Need to Know

A closer Look At DR-SES Summer Rates

DR-SES Winter Rates

SDG&Es TOU Peak Adjustment ProposalCurrent peak in the summer is from 11AM 6PMProposed change is to move the peak to 4PM-9PM year roundWill jump start the energy storage industry in San Diego!

Tou Peak Periods May Change

Advanced Energy StorageInstead of sending energy to grid during the day, send it to an advanced energy storage system (AES).Discharge the AES from 4-9PM and then charge it back up the next dayThis will affectively avoid the new proposed peakCan also serve as battery back up during grid outages

Sonnen batterie back-up & TOU

Ross Williams (619) 417-0098ross@hessolar.comRachael Williams (619) 300-7675rachael@hessolar.com

Questions & Contact Information