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www.peakload.org
National Grid’s Journey from BYOT to BYOD
National Grid - Mike SmithSunrun - Steve Wheat
EnergyHub - Chris Ashley
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Benefit / cost ratio
Engage / attract customers
Customer experience
Program design
Applying the BYO model
Speed / timeline
Program development
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*Sunrun systems installed in National Grid New England in 2017
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0.5 to 1.5 kW
15 – 20 DR events per year
Limited by customer fatigue
2.5 to 4.5 kW
Daily DR events
Limited by ability to recharge
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Dispatch execution
Customer experience
Home load restrictions
Battery response
Enrollment
Event management
Operations
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Lessons learned
Expansion
DR impact
Customer feedback
Partner collaboration
Data to inform planning
Results and future plan
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Enrolled participants < 25
Number of DR events 4
Event parameters 3 hour events (2-5pm)
Avg. kW / participant 0.15 kW*
*Under prevailing MA regulation, batteries are prohibited from exporting to the grid, so DR potential was limited to self-consumption, which proved negligible as most customers were meeting load with solar during the event hours.
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Energy discharged by battery with self -consumption: 2401 Wh
Energy that could have been discharged by battery with export: 7840 Wh
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Control strategy Resource usage Customer incentive Battery partners
Allow battery exportAdjust events each dayLarger event window
Daily DR events(July and August)
$275 / kW Sunrun, Vivint Solar, Tesla, Pika Energy
2019 plan
