Sentinel Pro™ Savings Calculator

Sentinel Pro Savings Calculator

For commercial, industrial and education sites. Enter system specification and operational profile to calculate the Sentinel Pro™ uplift over baseline solar + battery returns.

Customer details

Organisation name

Site address (line 1)

System specification

Solar PV size

kWp

Battery capacity

kWh

Battery power

Number of inverters

units

Annual consumption

kWh/yr

Annual generation

kWh/yr

Total system cost

Baseline financial figures — from commercial energy audit or proposal

Annual bill savings — yr 1

Annual export to grid

kWh/yr

Current export rate

p/kWh

Baseline payback period

years

25-year cumulative return (baseline)

Baseline rate of return

Import tariff type

Flat tariffSingle unit rate Day / NightCheaper off-peak overnight Day Ahead MarketDynamic — best for Sentinel

Flat tariff rates

Import unit rate

p/kWh

Day / Night tariff rates

Day rate (peak import)

p/kWh

Night rate (off-peak import)

p/kWh

Day Ahead Market tariff

Dynamic half-hourly pricing is handled automatically by Sentinel's optimisation engine. No manual rates required.

Operational profile

Office hours9–5, weekdays Extended hours7 days, work hours 24/7 operationContinuous load EducationTerm-time, daytime

Sentinel Pro™ subscription

Annual subscription costCalculated from PV size band

£ /year

Energy price inflation assumption

Annual energy price inflation rate 7%

3% 15%

Scenarios:

Sentinel Pro™ Financial Impact Report

Prepared by HSEnergy Group Ltd

Prepared for:

Results +£0 with Sentinel Pro 7% inflation assumed

Solar PV: —

Battery: —

Inverters: —

Annual usage: —

System cost: —

£0Extra annual benefit
from Sentinel Pro

0 yrsPayback without
Sentinel Pro

0 yrsPayback with
Sentinel Pro

0 yrsYears saved on
payback

0%Rate of return
with Sentinel Pro

Baseline (no Sentinel)Audit figures

Annual bill savings£0

Export income£0

AI optimisation—

Market revenues—

Total annual benefit£0

Payback period—

25-year cumulative return£0

Rate of return0%

+ Sentinel Pro™Recommended

Annual bill savings£0

Optimised export income£0

AI optimisation£0

Market revenues (net)£0

Total annual benefit£0

Payback period—

25-year cumulative return£0

Rate of return0%

ℹ 12 months free for new Sentinel Pro customers. From month 13, the subscription is £0/year based on your PV size band. Net figures above deduct the subscription cost from year 2 onwards. Market revenues shown net of 20% Joulen trading fee and 20% Sentinel optimisation fee.

Cumulative returns — 25 year projection

Baseline

Baseline + Sentinel Pro

Estimated monthly savings comparison

Baseline

+ Sentinel Pro

Baseline figures sourced from commercial energy audit. Sentinel Pro uplift figures are estimates based on system size, battery capacity, operational profile, tariff type, and Joulen commercial BESS scenario benchmarks (March 2026). Market revenues are not guaranteed and may be subject to a c.12 month delay for Capacity Market registration. Ancillary services require enhanced metering and may not be available immediately. Market revenues shown net of 20% Joulen trading fee and 20% Sentinel optimisation fee. Sentinel Pro subscription deducted from year 2 onwards. Energy price inflation applied at 7% per annum to cumulative projections. This calculator is a sales support tool for HSEnergy commercial surveyors and should not be presented to customers as a guaranteed financial forecast.