Model your annual True-Up bills and battery storage economics under Hawaiian Electric (HECO) Smart Renewable Energy (SRE) with peak import rates ($0.49/kWh) and Avoided Cost export credits.
Calculate annual True-Up bills and battery storage ROI under Hawaiian Electric (HECO) avoided-cost export rates and peak evening TOU tariffs.
US average is ~28–32 kWh/day (~900 kWh/month)
0 kWh (No Battery) · 13.5 kWh (1 Unit) · 27 kWh (2 Units)
4 PM to 9 PM utility rate (PG&E / SDGE / SCE)
Avoided cost wholesale rate paid for excess day exports
True-Up bill drops from $1,630 (Solar Only) to $714 (Solar + Battery).
| Tier / Setup | Solar Array | Storage | Solar Only True-Up | With Battery True-Up | Action |
|---|---|---|---|---|---|
| Modest Home / Starter | 6 kW | 10 kWh | $1,380/yr | $290/yr | Apply |
| Suburban Median (1 Battery) | 8 kW | 13.5 kWh | $1,950/yr | $410/yr | Apply |
| High Consumption + EV | 11 kW | 20 kWh | $2,890/yr | $620/yr | Apply |
| All-Electric Home (2 Powerwalls) | 14 kW | 27 kWh | $3,740/yr | $780/yr | Apply |
Residential battery storage systems of 3 kWh or greater qualify for the 30% Federal Residential Clean Energy Credit, even when installed without new solar panels. Under NEM 3.0, programming your battery inverter for "Self-Supply / Arbitrage" rather than pure backup is essential to maximize payback speed.
CPUC Filing Authority: HPUC Docket 2019-0323
Highest avoided cost credits in US; rapid 4.2-year solar payback with storage.
Under Smart Renewable Energy (SRE), solar energy exported during midday earns approximately $0.12/kWh while evening grid consumption costs $0.49/kWh, making home battery storage essential.
The fixed basic service fee is $14.0 per month regardless of net grid energy consumption.
Yes. Storing excess midday generation and discharging during the 5:00 PM – 10:00 PM Daily peak window maximizes overall electrical cost offset.
Explore statutory rules, state benchmarks, and customized calculation models across all 51 jurisdictions.
View side-by-side peak TOU arbitrage economics across PG&E, SCE, and SDG&E.