REopt Lite Tool Presentation and Demo for SWIFt Accelerator

Emma Elgqvist, NREL

July 24th, 2018

NREL | 2

Technology Costs

Resource Magnitude

Utility Cost & Consumption

Incentives & Policies

Will PV + Storage Work for Your Site?

Resilience

Goals

NREL | 3

PV and Storage for Demand Reduction and Energy Arbitrage

TuesdayMonday Wednesday Thursday Friday Saturday Sunday

Demand ReductionSetting peak for the

month

Energy ArbitrageBuy cheap, sell high

NREL | 4

REopt Lite Inputs and Outputs

Renewable GenerationSolar PV

Conventional GenerationElectric Grid

GoalsMinimize Cost

Net ZeroResiliency

EconomicsFinancial Parameters

Technology CostsIncentives

Utility CostsEnergy Charges

Demand ChargesEscalation Rate

OperationsOptimal Dispatch

REoptEnergy Planning PlatformTechno-economic Optimization

Technologies Technology MixTechnology Size

Project Economics CapEx, OpExNet Present Value

Energy StorageBatteries

NREL | 5

REopt Lite

• The REopt Lite Web Tool offers a no-cost subset of NREL's more comprehensive REopt model

• Beta version of web tool launched September 2017; additional features added through 2018 and beyond

• Financial mode optimizes PV and battery system sizes and battery dispatch strategy to minimize life cycle cost of energy

• Resilience mode sizes PV+storage systems to sustain critical load during grid outages

NREL | 6

Required Site Specific Inputs (Financial Mode)

Location and utility rate

Load profile –simulated or actual

Technologies to evaluate

NREL | 7

Additional Inputs Can Be Edited, Or Left As Defaults

NREL | 8

Summary Results Include System Sizes and Savings

NREL | 9

Additional Results Output: Economics Summary

NREL | 10

Additional Results Output: Hourly Dispatch Graph

NREL | 11

Additional Required Site Specific Inputs (Resilience Mode)

CRITICAL load profile – simulated or actual

Outage start, length and reoccurrence

NREL | 12

Additional Outputs: Resilience Mode

NREL | 13

Additional Outputs: Resilience Mode

NREL | 14

Case Study Scope

Facility Name Electricity Use (kWh)

Annual Energy Charges

Annual Peak Demand Charges

Annual Non-Coincident

Demand Charges 20-Year Cost of

Electricity

COMMUNICATION BUILDING 1,604,540 $169,515 $84,530 $87,229 $6,553,880

CENTRAL OPERATIONS YARD 617,213 $66,554 $31,353 $38,435 $2,618,330

SITE OPERATIONS 488,552 $52,055 $24,992 $28,659 $2,029,980

ROSE CANYON OPERATIONS STATION 358,004 $39,074 $17,420 $19,753 $1,464,260

CITY HEIGHTS LIBRARY 261,308 $28,372 $17,478 $17,405 $1,214,760

POLICE GARAGE 247,746 $26,315 $9,596 $10,763 $896,331

SOUTHEASTERN POLICE STATION 246,768 $26,329 $9,575 $10,547 $892,056

CANYONSIDE RECREATION CENTER 237,030 $27,091 $73,288 $72,095 $3,312,230

ALLIED GARDENS POOL 212,037 $22,427 $9,471 $9,918 $803,065

RECREATION CENTER 178,502 $19,062 $17,153 $16,813 $1,018,360

NORTH UTC LIBRARY 169,948 $18,792 $15,392 $15,178 $947,963

RECREATION CENTER 102,467 $10,989 $6,405 $6,389 $456,738

BENJAMIN LIBRARY 69,734 $7,675 $5,437 $5,505 $357,518

• Scope: Evaluate and prioritize PV + storage opportunities for municipality in southern CA with varying energy costs and consumption

NREL | 15

Case Study Results

• Results: PV and storage appear cost effective at all 13 sites evaluated; REopt recommends the technology mix and size to minimize costs at each site

NREL | 16

Resources

• REopt website: https://reopt.nrel.gov/

• REopt Lite web tool: https://reopt.nrel.gov/tool

• REopt technical report: https://www.nrel.gov/docs/fy17osti/70022.pdf

• REopt fact sheet: http://www.nrel.gov/docs/fy14osti/62320.pdf

www.nrel.gov

NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiencyand Renewable Energy, operated by the Alliance for Sustainable Energy, LLC.

Thank You!

Emma Elgqvist, NREL

emma.elgqvist@nrel.gov

This work was authored by the National Renewable Energy Laboratory, operated by Alliance for Sustainable Energy, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE-AC36-08GO28308. Funding provided by the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Federal Energy Management Program. The views expressed in the presentation do not necessarily represent the views of the DOE or the U.S. Government. The U.S. Government retains and the publisher, by accepting the presentation for publication, acknowledges that the U.S. Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for U.S. Government purposes.