AmpliPHI Sol-Ark Integration Guide

SimpliPhi Power, Inc. | 3100 Camino Del Sol | Oxnard, CA 93030, USA | [phone] | [e-mail] | SimpliPhiPower.com
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© SIMPLIPHI POWER
5.5 – Time of Use Selling / Energy Arbitrage
Discharge batteries to power circuits during specific set times. Program these times to coincide with the utility
company’s peak pricing times to avoid high energy charges from the utility.
Homeowners who have a net energy metering agreement with the utility company can use both Grid Sell and
Time of Use Selling modes to sell solar PV and battery energy (until the minimum programmed SoC percentage
level) back to the grid during peak sun-hour times and then discharge the batteries during programmed times,
usually in the afternoon and evening. Depending on whether Limited power to load or Limited Power to Home
is enabled, the batteries will power either the critical loads sub-panel only (Limited to Load) or the critical loads
sub-panel and the main house breaker panel (Limited to Home) during the Time of Use Selling
time period.
Make sure to size the battery accordingly. (Refer to the Discharge Example in the Grid Sell / Grid-Tied with
Battery Backup section of this Guide for battery bank sizing when batteries power the critical loads sub-panel
only. Refer to the Discharge Example in Section 3 of this Guide for battery bank sizing when the batteries
power both the critical loads sub-panel and the main house breaker panel.)
Homeowners who do not have a net energy metering agreement use both Limited Power to Home and Time of
Use Selling
modes to prioritize powering all loads (circuits both on the critical loads sub-panel and the main
house breaker panel) from the solar and/or batteries during programmed times. Refer to the Discharge
Example in Section 3 of this Guide for battery bank sizing when the batteries power both the critical loads sub-
panel and the main house breaker panel.
CAUTION: EITHER THE GRID SELL OR THE LIMITED POWER TO HOME MODE (CHECK
THE APPROPRIATE BOX IN THE GRID SETUP / GRID PARAM MENU) MUST BE USED IN
CONJUNCTION WITH TIME OF USE SELLING.
During Time of Use Selling times, loads are powered from solar first (if available), batteries second, and the grid
third (if batteries have discharged to their programmed minimum SoC percentage level).
Make sure the GridCharge box is unchecked during peak pricing times so that the batteries do not charge
when energy from the utility company is most expensive (see Figure 12).
F
igure 12 – Limiter Tab in Grid Setup menu
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