Comparing Home Battery Storage Systems: Sigenergy, GivEnergy, and myenergi

Choosing the right battery storage and inverter system is important for energy efficiency, cost savings, and EV integration. At UKGEI, we work with three trusted UK brands: Sigenergy, GivEnergy, and myenergi.

This guide highlights their key features, capacities, and use cases so you can make an informed choice for your home.

Sigenergy — Integrated Storage, Inverter & EV Charging

Use case: Suitable for homes that prefer an all-in-one system combining storage, inverter, and EV charging.

Key features:

• SigenStor all-in-one system: battery, hybrid inverter, and EV charger in one unit.

• Modular capacity from 5kWh to 48kWh.

• AI-powered energy management for efficient use of solar energy.

• Backup power function in case of outages.

• Compact design for limited installation space.

GivEnergy — Modular & Expandable Solutions

Use case: Ideal for homes that may expand their energy storage over time.

Key features:

• Modular battery and inverter options for flexible sizing.

• Hybrid and AC-coupled inverters available.

• UK-backed warranties and support network.

• Cloud-based monitoring for real-time insights.

• Supports phased solar + storage upgrades.

myenergi — Smart EV Charging & Energy Management

Use case: Perfect for homeowners with EVs who want to maximise solar energy use and integrate with existing storage.

Key features:

• Zappi EV charger prioritises solar energy for vehicle charging.

• Compatible with battery storage systems for full home energy control.

• Devices like Eddi and Harvi manage surplus solar for heating or hot water.

• UK-designed and manufactured with sustainability in mind.

• Seamless integration with multiple battery brands.

Feature / Brand	Sigenergy	GivEnergy	myenergi
Type	All-in-one storage, inverter & EV charger	Modular battery & inverter	EV charger & energy management devices
Capacity	5kWh–48kWh (modular)	Flexible, modular	Works with various battery sizes
Scalability	Yes	Yes	Compatible with expandable systems
EV Integration	Built-in charger	Compatible with external chargers	Purpose-built EV charging
UK Support	Yes	Yes	Yes
Use Case	Space-saving, integrated installation option	Modular system suitable for phased expansion	EV owners looking for smart energy management

Note: All three systems are high-quality solutions; the right choice depends on your home’s layout, energy needs, and EV setup.

Ready to find your perfect match?

Contact us today for expert advice on Sigenergy, GivEnergy, myenergi, and other leading battery storage and inverter solutions.

Call: 0333 577 5229
Or contact us here

UKGEI: Your Multi-Brand Renewable Energy Specialists in Hampshire, Surrey & Berkshire

UKGEI is proud to offer a complete range of renewable energy solutions for homes and businesses across Hampshire, Surrey, and Berkshire. From EV chargers and battery storage to solar power and inverters, we supply and install the leading brands to meet your energy needs — all backed by certified expertise.

Our Unique Multi-Brand Offering

We don’t just supply one solution — we provide a full ecosystem of energy products, including:

EV Chargers: Andersen Quartz, Zappi, Glow, Tesla
Battery Storage & Inverters: Myenergi Libbi & Eddi
Solar & Integrated Energy Systems: Sigenergy
Premium Installations: Platinum installers for Givenery

This means we can design a tailored solution that matches the right combination of products to your property, maximising efficiency, savings, and convenience.

Certified Expertise You Can Trust

• MCS-approved installers for battery storage and inverters

• Platinum Givenery installers for advanced solar and storage systems

• Experienced multi-brand integration, ensuring all systems work seamlessly together

Our local team brings years of experience and knowledge to every project, from free consultation and site assessment to expert installation and ongoing support.

Serving Hampshire, Surrey & Berkshire

From the heart of Hampshire to towns and villages across Surrey and Berkshire, UKGEI delivers trusted, high-performance renewable energy solutions. Whether you want to install a new EV charger, add battery storage, or integrate multiple systems, we’re here to make it simple and reliable.

Ready to upgrade your energy?

Contact us today to book your free consultation, and discover how our multi-brand solutions can save you money, reduce your carbon footprint, and future-proof your home or business.

Unlocking Green Finance: Greener Homes Scheme & Home Installations With Some Mortgage Providers

1. Green Mortgage Offering

Some mortgage providers in the UK now offers a discounted remortgage rate (0.10% lower) on properties with an EPC rating of A or B, available exclusively via brokers and for LTVs between 60%–85%.

In addition, its revamped Greener Homes Hub provides cashback rewards of £250 for £5,000–£9,999 borrowing and £500 for loans of £10,000 or more to fund eligible green home improvements. Partnered support includes free EPC assessments and solar installation guidance.

2. Green Cashback: How Much You Can Save

Some providers also provide borrowing options with at least £5,000 for improvements such as solar PV, battery storage, heat pumps, EV chargers, insulation, or double glazing may receive up to £1,000 cashback—including solar-specific rewards.

Lenders like Halifax and Lloyds offer up to £2,000 cashback for heat pumps, with £1,000 for solar and batteries, and £500 for insulation or glazing, though Santander caps at £1,000 for solar/battery cases.

3. Eligible Installations

Here’s what's generally covered under the schemes:

• Solar PV panels (e.g., GivEnergy, MyEnergi, Tesla)

• Battery energy storage systems (e.g., GivEnergy, Tesla Powerwall, MyEnergi)

• EV chargers including: MyEnergi Zappi Glo, Tesla Wall Connector, Rolec, or Andersen Quartz

Installations must be completed by TrustMark-registered or MCS-certified installers, submitted within specific timelines, with final invoice documentation submitted per mortgage provider’s claim process .

4. Why Choose These Installations for Homeowners in Hampshire, Berkshire & Surrey

Lower Your Mortgage Rate

If you’re remortgaging your property (60%–85% LTV) with an A or B EPC rating, Santander will apply a 0.10% discount on the interest rate, potentially saving you hundreds in interest over time

Claim Cashback on Green Improvements

Borrow between £5,000–£9,999 and get £250 cashback, or £500 if borrowing £10,000+, potentially £1,000 for solar + battery installs—great value considering the long-term energy bill savings and carbon reduction

Improve Energy Efficiency & Home Value

Upgrading your EPC rating and installing proven green energy technologies like solar and EV chargers not only reduces bills but also enhances resale value and marketability of your home, especially as EPC-aware buyers grow.

5. Local Coverage Areas & Installer Partners

At UKGEI, we support installations across Hampshire, Berkshire, Surrey, including Guildford, Reading, Basingstoke, Farnham, Fleet, Farnborough, Camberley, Bracknell, Wokingham, Hook. We work with installers certified by MyEnergi, GivEnergy, Tesla, Andersen—all compliant with Santander’s trusted partner network.

6. Step-by-Step: How to Benefit from Santander’s Green Offer

• Check your current EPC rating if B or A, you’re eligible. If not, consider improvement options.

• Request quotes from certified installers (solar PV, battery storage, EV charger).

• Submit mortgage/loan application—borrow £5,000+ via Santander for improvements.

• Complete install and submit invoice/proof within lender’s deadline.

• Claim your cashback and enjoy reduced mortgage rate & energy bills.

7. Comparison Snapshot

• Feature: Example of a Greener Homes Scheme

• EPC Requirement: EPC A or B (new or upgraded)

• Mortgage Rate Discount: 0.10% lower for 60–85% LTV

• Cashback: £250 (borrow £5–9.9k), £500 (≥£10k), up to £1,000 for solar/battery

• Eligible Technologies: Solar PV, battery systems, EV chargers, insulation, glazing

8. Why It Matters

Installing brands like GivEnergy, MyEnergi, Tesla, Andersen not only aligns with current lender’s schemes but also ensures top-tier performance, long warranties, and compliance with lender requirements—so you invest in systems that are reliable, efficient, and future-proof.

Bottom Line

For homeowners in Hampshire, Berkshire and Surrey, greener home incentives offer genuine financial incentives to make green upgrades more affordable. By installing solar PV, storage or EV chargers through certified partners, buyers or remortgagors can benefit from a lower mortgage rate, cashback, and long-term savings while boosting EPC performance and reducing carbon emissions.

If you’re ready to explore quotes or need help navigating eligibility or installer options in your area, UKGEI is here to assist every step of the way!

The Tesla Owner’s Guide to Slashing Energy Bills with Smart Charging & Battery Storage

If you own a Tesla in the UK, you already know the thrill of smooth, silent driving and the satisfaction of zero tailpipe emissions. But what if you could take that feeling even further — saving hundreds of pounds a year on charging while making your home more energy-independent?

With a smart Tesla charger and home battery storage, you can. Here’s how.

The Cost Problem Tesla Owners Face

Charging a Tesla at home is almost always cheaper than relying on public chargers — but when you charge matters.

• Peak-time electricity rates can be double or triple the cost of off-peak rates.

• The UK’s grid is under increasing strain, and in some areas, prices are set to rise.

• If you’re charging at the wrong time, you could be paying up to 70% more than necessary.

How Smart Charging Works for Teslas

A smart charger does much more than simply connect your Tesla to the mains:

• Automatic off-peak charging – Program your charger to only pull energy during your supplier’s cheapest rate periods.

• Solar integration – If you have panels, the charger can prioritise free solar power.

• Real-time control – Manage your charging from an app, track costs, and optimise usage.

Example: If your electricity costs 30p/kWh during the day but only 8p/kWh overnight, a smart charger ensures you’re always getting the cheapest rate — automatically.

Battery Storage: Not Just for Solar Owners

Many people think battery storage only makes sense with solar panels — but that’s not true.

Even without solar, a battery can:

• Store cheap off-peak energy for use during expensive periods.

• Provide backup power during outages.

• Reduce strain on the grid, making your home more resilient.

With the right setup, you could charge your Tesla from stored off-peak energy even if you need to top up during the day.

Savings Scenarios for UK Tesla Owners

Let’s take a typical Tesla Model Y owner driving 10,000 miles per year:

• Standard peak-time charging: ~£1,350/year.

• Smart charger + off-peak tariff: ~£850/year.

• Smart charger + battery storage: ~£600/year.

That’s a potential saving of £750 every year — and that’s without factoring in any future energy price rises.

Government Support & Grants

The UK currently offers various schemes to help with the cost of installing EV chargers and battery storage. These may include:

• EV chargepoint grants for homeowners and landlords.

• VAT reductions for certain energy-saving technologies.

• Potential local authority incentives for low-carbon upgrades.

• We’ll help you check exactly what you’re eligible for when you enquire.

Ready to Drive Smarter?

A Tesla is more than a car — it’s a step toward a cleaner, smarter lifestyle. Pairing it with the right home energy setup can:

• Cut your charging costs.

• Make your home more energy independent.

• Increase your property’s value.

Find out how much you could save.

[Book your free Tesla charging & battery storage assessment]

5 Simple Ways to Reduce Your EPC Rating

Cut Your Energy Costs – Improve Your EPC Rating Today

Is your building’s EPC rating holding you back?

Whether you're a landlord, property manager, or business owner, improving your Energy Performance Certificate (EPC) rating is crucial — not just for compliance, but also for cutting energy costs and boosting property value.

At UKGEI, we specialise in sustainable energy solutions that make an impact. Here are 5 smart ways to reduce your EPC rating — and how we can help:

1. Install Solar Panels

Generate clean, renewable energy and lower your reliance on the grid. Our solar solutions are tailored to maximise your building’s potential.

2. Upgrade to LED Lighting Whether in the Boardroom or Warehouse

Switching to LED reduces electricity use dramatically. We offer full LED retrofitting to instantly improve your energy efficiency.

3. Improve Insulation

Heat loss is a major contributor to poor EPC ratings. We provide expert guidance and can connect you with trusted insulation partners.

4) Upgrade Heating & Cooling Systems

Outdated systems drain energy. Our team assesses your current setup and offers low-carbon alternatives that pay off fast.

5. Request a Free Quote

Not sure where to start? Our engineers offer a report and free quote to deliver cost-effective improvements, giving you a clear roadmap to a better EPC.

Sustainable. Cost-effective.
Guaranteed results.