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Sentinel EMS™ Savings Calculator | What Sentinel Could Add to Your System

See what Sentinel could
add to your system

Sentinel EMS™ turns your solar & battery system into a smarter, optimised, market-connected setup. Get a rough estimate of the additional value Sentinel could unlock for your home, then one of our energy experts will follow up with a tailored figure based on your system and usage.

Choose this if you already have a solar & battery system installed, or you've been quoted for one.

Tell us about your system

Sentinel currently connects to FoxESS systems, with more brands supported through 2026. Whichever brand you have, we'll show you what Sentinel could add to your system.

Please select your inverter brand
Please tell us the status of your system

Your system specifications

These four numbers let us calculate exactly what Sentinel could add to your setup. You can find them on your quote, SEG statement or inverter app.

Usually between 2.5 – 13.5 kWp for homes Please enter your panel size
Check your inverter app or system documents Please enter your battery capacity
Find this on your electricity bill. UK average ~3,100 kWh Please enter your annual usage
From your SEG statement, inverter app, or installer estimate Please enter your export figure

Your tariff and usage

Sentinel works smarter with the way you actually use energy. A few quick questions, no bills to dig out.

Not sure? Choose 'Standard'. Most UK households are on a standard flat tariff. Please select your tariff type
Please tell us when you use most of your energy
Find this on your bill or energy app. UK average approx. 28p/kWh.
Your Sentinel uplift

Here's what Sentinel could add to your system

Here's a rough estimate of what Sentinel could add on top of your existing solar & battery savings, based on the details you've given us. A tailored estimate will follow once one of our energy experts has assessed your system properly.

Your system

Solar panels — kWp —
Battery storage — kWh Stores excess solar
Annual usage — kWh — kWh exported

Your system today

Solar & battery, no Sentinel
Annual bill savings £0
Export income £0
Optimised Energy savings £0
Total annual benefit £0
Recommended

+ Sentinel EMS™

Smarter, optimised, market-connected
Annual bill savings £0
Optimised export income £0
Optimised Energy savings £0
Total annual benefit £0
With Sentinel, you could earn an extra £0 per year on top of your existing solar & battery savings, in your first year with Sentinel free
What's next?

Choose how you'd like to move forward

Your 12 months of Sentinel free is reserved either way; pick the option that suits you.

Talk to an energy expert

Get a callback to talk through your figures, ask any questions, and get a tailored estimate based on your specific system and energy usage.

Register for Sentinel

Ready to go? Complete the short Sentinel Registration Form to formally lock in your 12 months free.

Start registration
Please note: The figures above are rough estimates only, based on the details you've given us and typical UK system performance. They're a starting point, not a quote. Once you submit your details, one of our energy experts will assess your system, energy usage and tariff in more detail and follow up with a tailored estimate. Actual savings depend on your tariff, real-world usage patterns, market conditions and a number of other factors. Energy price inflation assumed at 7% per year. Sentinel year 1 is free for new customers; £199/yr or £19.99/mo thereafter.

Request a callback

Pop your details in below and one of our energy experts will be in touch at your preferred time to talk through your figures, answer your questions, and tailor your estimate.

Please enter your name
Please enter your phone number
Please enter your postcode
Please select a preferred call time

By submitting this form you agree to Sentinel and HSEnergy Group Ltd contacting you about Sentinel EMS™. We will not share your details with third parties. You can unsubscribe at any time.

Tell us about your home

A few quick questions so we can size a typical system and show you what Sentinel could add on top.

Please tell us if you own your home
Please select how many bedrooms
🔑

This part is for homeowners

A solar & battery installation requires the property owner's permission. If you already have solar at your rented property and your landlord is open to it, switch to "I have solar & battery" above.

Otherwise, share this page with the property owner; Sentinel can also be installed by landlords who want to add value to their portfolio.

Tell us about your energy

A few quick questions to estimate your annual usage and tariff style. Rough answers are fine.

£150 per month
£50 £200 £350 £500+
Include both gas and electricity? Just enter your electricity portion. If you're not sure, use roughly two thirds of your total energy bill.
Please tell us when you use most of your energy
Not sure? Choose 'Standard'. Most UK households are on a standard flat tariff. Please select your tariff type
Your estimate

Here's what a smarter system could do for your home

Here's a rough estimate of the solar & battery system that would suit your home and what Sentinel could add on top, based on your answers. A tailored estimate will follow once one of our energy experts has assessed your property and energy usage in more detail.

A typical system for your home

Solar panels — kWp Approx. — panels
Battery storage — kWh Stores excess solar
Indicative cost £— – £— Fully installed

Solar & Battery

Standard system, no Sentinel
Annual bill savings £0
Export income £0
Optimised Energy savings £0
Total annual benefit £0
Recommended

+ Sentinel EMS™

Smarter, optimised, market-connected
Annual bill savings £0
Optimised export income £0
Optimised Energy savings £0
Total annual benefit £0
With Sentinel, you could earn an extra £0 per year on top of your solar & battery savings, in your first year with Sentinel free
What's next?

Choose how you'd like to move forward

Sentinel works alongside any solar & battery system installed by a trusted installer. Either way, you'll get 12 months of Sentinel free with installation.

Talk to an energy expert

Get a callback to talk through your figures, ask about installer recommendations, and get a tailored estimate based on your property.

Register for Sentinel

Ready to go? Complete the short Sentinel Registration Form to formally lock in your 12 months free and be matched with a trusted installer.

Start registration
Please note: The figures above are rough estimates only, based on the brief answers you've given us and typical UK system performance. They're a starting point, not a quote. Once you submit your details, one of our energy experts will assess your property, energy usage and tariff in more detail and follow up with a tailored estimate. Actual savings depend on roof orientation, shading, tariff structure, real-world usage patterns and a number of other factors. Indicative system costs are typical FoxESS solar & battery packages and will vary by site. Energy price inflation assumed at 7% per year. Sentinel year 1 is free for new customers; £199/yr or £19.99/mo thereafter.

Request a callback

Pop your details in below and one of our energy experts will be in touch at your preferred time to talk through your figures, recommend a trusted installer, and tailor your estimate to your property.

Please enter your name
Please enter your phone number
Please enter your postcode
Please select a preferred call time

By submitting this form you agree to Sentinel and HSEnergy Group Ltd contacting you about Sentinel EMS™. We will not share your details with third parties. You can unsubscribe at any time.

Your callback is booked

One of our energy experts will be in touch at your preferred time. Have a quick look at your figures while you wait; they'll be your starting point for the conversation.