1) Who uses this page
Anyone configuring PV+ESS or ESS-only designs.
Sales teams in Sales Mode (battery step).
Users preparing Document/Web proposals who need accurate bill deltas, grid import/export, or backup hours.
2)Before you begin (prerequisites)
Consumption must be entered (Lead Summary > Consumption).
If consumption is missing, Battery will show a disabled state with a message and a link to add it.
3) How the Battery page is organized
Choose battery system (model/size stack).
Choose operating method (one of four).
Offset Peak TOU rates
Self consumption Bill savings
Partial Home Backup
Full Home Backup
4) Offset Peak TOU rates
Use when: The tariff has time-of-use periods and you want to reduce peak-period costs.
If the selected tariff doesn’t have TOU rates, this method is disabled.
4a) Defaults & recommended size
With Genability tariffs:
Default duration = the first On-Peak period.
Recommended size = consumption within that duration.
With Custom tariffs:
Default duration = the highest-rate period.
Recommended size = consumption within that duration.
You can change the duration; recommended size updates automatically.
Peak Shaving (optional)
Toggle Peak Shaving to cap charge rate at site peak demand.
Prevents the battery from creating a new peak (avoids demand-charge surprises).
4b) Battery configuration (control scheme)
Default control is set for “Offset Peak TOU” and can be customized if needed.
Typical defaults (summarized):
Solar + Battery — On-Peak: Charge from Solar ✅ | Grid ❌ | Discharge to Load ✅ | to Grid ❌ | Preference: Battery
Solar + Battery — Off-Peak: Charge from Solar ✅ | Grid ❌ | Discharge to Load ✅ | to Grid ❌ | Preference: Battery
Battery-only — On-Peak: Charge from Grid ❌ | Discharge to Load ✅ | to Grid ✅ | Preference: Battery
Battery-only — Off-Peak: Charge from Grid ✅ | Discharge to Load ✅ | to Grid ❌ | Preference: Battery
Click Custom configuration to alter these.
4c) Outputs
PV + ESS outputs:
Yearly Grid Import (kWh)
Yearly Grid Export (kWh)
On-site Grid Independence (%) = (1 − Grid Import / Yearly Consumption) × 100
Yearly Bill without Solar+Battery ($) (Genability or pre-solar calc)
Yearly Bill with Solar+Battery ($) (Genability or post-solar calc)
Avg Monthly Bill — without / with Solar+Battery ($)
Monthly bill chart: two lines (without vs with S+ESS)
ESS-only outputs:
Yearly Bill without Battery ($)
Yearly Bill with Battery ($)
Avg Monthly Bill — without / with Battery ($)
Monthly bill chart: two lines (without vs with Battery)
5) Self Consumption Bill Savings
Use when: You want to maximize using your own solar and lower bills; optionally reserve part of the battery for backup.
5a) Defaults & recommended size
Genability: default duration = first On-Peak; recommended size = consumption in that duration.
Custom tariff: default duration = highest rate period; recommended size = consumption in that duration.
Duration can be changed; recommended size updates.
Peak Shaving (optional)
Same behavior as Method A — caps charge to avoid creating new peaks.
5b) Backup reserve (%)
Choose what % of battery to reserve for backup.
Battery won’t discharge below this reserve during bill-savings operation.
System calculates backup hours from the reserved portion (like Full/Partial backup logic).
5c) Customize configuration
Same customization workflow as Offset Peak TOU (edit control scheme if needed).
5d) Outputs
PV + ESS outputs:
Yearly Grid Import (kWh)
Yearly Grid Export (kWh)
On-site Grid Independence (%) = (1 − Grid Import / Yearly Consumption) × 100
Yearly Bill without Solar+Battery ($) (Genability or pre-solar calc)
Yearly Bill with Solar+Battery ($) (Genability or post-solar calc)
Avg Monthly Bill — without / with Solar+Battery ($)
Monthly bill chart: two lines (without vs with S+ESS)
ESS-only outputs:
Yearly Bill without Battery ($)
Yearly Bill with Battery ($)
Avg Monthly Bill — without / with Battery ($)
Monthly bill chart: two lines (without vs with Battery)
On top of that
Bill deltas (with/without), grid import/export, grid independence (PV+ESS),
Backup hours from reserved capacity, and monthly chart.
6) Partial home backup
Use when: The customer wants to back up essential appliances only.
6a) Recommended size
Based on essential appliances selection.
6b) Outputs
You’ll see backup hours plus any bill/independence metrics relevant to the design type.
Backup on storage with Essential Load: Amount of Bakup (in hours) to run all the configured essential appliances using only battery
Backup on storage with Full Load: Amount of Bakup (in hours) to run the full load using only battery
Backup on Solar and storage with Full load: Amount of Bakup (in hours) to run the full load with both solar and battery.
7) Full home backup
Use when: The customer wants to back up the whole home.
7a) Recommended size
Based on % of annual load offset and backup duration (days).
Defaults: 50% load offset & 2 days duration.
7b) Outputs
You will see the whole-home backup hours and show PV+ESS or ESS-only outputs
Backup on storage on self consumption: Amount of Bakup (in hours) to meet the demand based on the defined annual load offset value
Backup on storage with Full Load: Amount of Bakup (in hours) to run the full load using only battery
Backup on Solar and storage with Full load: Amount of Bakup (in hours) to run the full load with both solar and battery.
FAQs
Q1. What’s the biggest change in the new battery implementaion?
You pick a battery first, then choose how to operate it and see outcomes. It’s faster and clearer.
Q2. Why is Offset Peak TOU disabled?
Your tariff doesn’t have TOU periods. Choose a different method or change tariff inputs.
Q3. What does Peak Shaving do?
It caps charge rate to your site’s peak demand so the battery doesn’t create a new peak (avoids extra demand charges).
Q4. Can I reserve part of the battery for backup while doing bill savings?
Yes — in Self-Consumption, set a Backup Reserve (%). We’ll calculate backup hours for that reserved slice.
Q5. Where do essential appliances live now (Partial Backup)?
In a popup. Pick appliances there; recommended size updates.
Q6. How is Full Home backup sized?
By % of annual load offset + backup duration (defaults 50% and 2 days), chosen in a popup.
Q7. Do these numbers show up in proposals?
Yes. Sales Mode and Document/Web proposals show the same method-specific metrics and charts.
Q8. Can I use this in Sales Mode?
Yes. Sales Mode uses the same Battery page. “Edit Battery” opens it; pricing appears at the top once added.
Q9. Where do I go next after Calculate?
Use the top tabs: Pricing & Financing to finalize numbers, then Proposal to Share (Web) or Download (Document).