Knowledge base

Guides and insights

Practical information about solar, batteries and heat pumps for UK homeowners. Updated weekly.

Heat Pumps17 Aug 2026 · 6 min read

Can Solar Panels Run a Heat Pump?

An honest look at running an air source heat pump on solar in the UK — what panels really cover in winter, and where the savings actually come from.

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Battery Storage12 Aug 2026 · 6 min read

Are Home Batteries Safe? An Honest Answer

Fire risk, chemistry, and what a safe home battery installation actually looks like — a straight answer for UK homeowners considering storage.

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Solar PV11 Aug 2026 · 6 min read

Do You Need Planning Permission for Solar Panels?

Most home solar installs are permitted development. The rules that actually apply, the properties that are exceptions, and the approval people forget about.

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Heat Pumps8 Aug 2026 · 6 min read

What Size Heat Pump Do I Need?

Heat pump sizing isn't guesswork and it isn't your old boiler's kW rating. Here's how heat loss calculations work and why oversizing costs you money.

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Battery Storage6 Aug 2026 · 6 min read

Where Should a Home Battery Be Installed?

Garage, utility room, loft or outside wall? Where your home battery goes affects safety, performance and cost. A practical guide for UK homeowners.

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Solar PV3 Aug 2026 · 6 min read

Do You Need a New Roof Before Solar Panels?

Solar panels last 25+ years, so roof condition matters. When a roof needs work first, when it doesn't, and what installers actually check.

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Heat Pumps1 Aug 2026 · 6 min read

Will a Heat Pump Give You Enough Hot Water?

Heat pumps heat water differently to a boiler. Here's what changes — cylinder size, water temperature, reheat times — and whether you'll ever run out.

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Battery Storage29 Jul 2026 · 6 min read

How Long Do Home Batteries Last?

Home batteries are warrantied for around 10 years but usually last longer. Here's what cycles, chemistry and degradation actually mean for UK homeowners.

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Solar PV27 Jul 2026 · 6 min read

Do Solar Panels Work in the Shade?

Chimneys, trees and neighbouring roofs don't rule out solar. How shading actually affects output, and when optimisers are worth paying for.

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Heat Pumps26 Jul 2026 · 6 min read

Do Heat Pumps Work in Cold Weather?

Yes — air source heat pumps keep working in UK winters and even hard frosts. Here's how they cope with the cold and what actually affects performance.

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Battery Storage23 Jul 2026 · 6 min read

What Size Home Battery Do I Need? A UK Guide

Bigger isn't always better with battery storage. Here's how to size a home battery around your actual usage — and why oversizing wastes money.

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Solar PV17 Jul 2026 · 5 min read

Solar Panel Roof Orientation: East, West or South?

Which way should your roof face for solar panels? How south, east-west and even north-facing roofs perform, and what it means for your system design.

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Heat Pumps15 Jul 2026 · 6 min read

Do You Need Planning Permission for a Heat Pump?

A clear guide to UK heat pump planning permission, noise limits and listed building rules in 2026 — what's changed and what it means for your install.

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Battery Storage13 Jul 2026 · 6 min read

Will a Home Battery Keep the Power on in a Cut?

Home batteries are sold on savings, but they can also keep your lights on in a power cut — if the system is specced for it. Here's what actually works.

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Solar PV8 Jul 2026 · 4 min read

Energy Price Cap Up 13%: What It Means for Solar

Ofgem's July 2026 price cap rise makes grid electricity more expensive. Here's how that changes the maths on solar panel payback times.

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Heat Pumps6 Jul 2026 · 6 min read

Do Heat Pumps Need Bigger Radiators?

The honest answer to whether your radiators need replacing for a heat pump — when they're fine, when they need upgrading, and what it costs.

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Battery Storage3 Jul 2026 · 6 min read

Can You Add a Battery to Existing Solar Panels?

Got solar panels but no battery? Here's how retrofitting battery storage actually works, what it costs, and when it makes sense.

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Solar PV2 Jul 2026 · 5 min read

Why Get Solar in 2026? Prices, Payback and What's Changed

Panel prices are at historic lows, electricity isn't, and payback has dropped to 5–8 years. Here's the honest case for installing solar in 2026.

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Solar PV1 Jul 2026 · 5 min read

How Many Solar Panels Do I Need? A UK Sizing Guide

8 panels or 16? How installers actually size a solar system — roof space, electricity usage, aspect and budget — with typical numbers for UK homes.

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Heat Pumps29 Jun 2026 · 6 min read

The Best Air Source Heat Pumps in 2026 (UK Guide)

Vaillant, Worcester Bosch or Ideal? What actually separates the best air source heat pumps in 2026 — efficiency, noise, warranties and real-world fit.

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Battery Storage25 Jun 2026 · 6 min read

Best Home Battery Storage 2026: SigenStor vs Powerwall vs FoxESS

The three home batteries we're asked about most in 2026, compared honestly — capacity, expandability, backup power and value.

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Solar PV24 Jun 2026 · 5 min read

Do Solar Panels Work in North West England's Weather?

Manchester gets more rain than Rome — and solar still pays. What grey skies, rain and northern latitude actually do to solar generation in the North West.

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Solar PV22 Jun 2026 · 5 min read

How Much Do Solar Panels Cost in the UK in 2026?

Real installed prices for solar in 2026: what a 4kWp system costs, what moves the price up or down, and how to compare quotes properly.

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Heat Pumps18 Jun 2026 · 5 min read

The £7,500 Boiler Upgrade Scheme Explained (2026)

Who qualifies for the BUS heat pump grant, why oil and LPG homes get £9,000, and exactly how the money reaches you — spoiler: you never touch it.

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Heat Pumps17 Jun 2026 · 6 min read

Heat Pump Running Costs: What You'll Actually Pay

Gas boiler vs air source heat pump running costs compared honestly — efficiency, tariffs, and the numbers that decide whether a heat pump saves you money.

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Battery Storage15 Jun 2026 · 5 min read

Solar + Battery vs Battery-Only: Which Makes Sense for Your Home?

You don't need solar panels to benefit from a home battery. Here's how the two setups compare in 2026 — and how to tell which one fits your home.

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Solar PV11 Jun 2026 · 4 min read

Smart Export Guarantee: How to Get Paid for Your Solar Power

The SEG pays you for every unit of solar power you export. Here's how it works in 2026, what rates to expect, and how to squeeze the most from it.

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Solar PV10 Jun 2026 · 4 min read

Solar Panel Maintenance: What It Actually Involves (Very Little)

Do solar panels need cleaning? Servicing? What breaks and when? An honest guide to maintaining a solar PV system over its 25-year life.

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Heat Pumps8 Jun 2026 · 5 min read

7 Heat Pump Myths That Need to Die in 2026

They don't work in the cold, they're noisy, you need underfloor heating — the most persistent heat pump myths, tested against how the technology actually performs.

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Battery Storage3 Jun 2026 · 5 min read

Smart Tariffs + Battery Storage: How Cheap Overnight Power Works

Time-of-use tariffs can halve the cost of the electricity you use — if you have a battery to catch the cheap hours. How tariff arbitrage works in practice.

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Solar PV27 May 2026 · 4 min read

Do Solar Panels Add Value to Your Home?

EPC ratings, buyer expectations and sale prices — what solar panels, batteries and heat pumps actually do to your home's value in 2026.

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Solar PV25 Jun 2025 · 5 min read

Is Solar PV Still Worth It in 2025?

Energy prices remain high. Here is what a solar install actually returns today — and what affects your payback period most.

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Battery Storage18 Jun 2025 · 6 min read

Battery Storage: What You Need to Know Before Buying

A battery does not just store energy. It changes how your whole home interacts with the grid. Here is what that means in practice.

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Heat Pumps11 Jun 2025 · 7 min read

Air Source Heat Pumps: The Complete Guide for UK Homeowners

An ASHP is not a direct boiler replacement that works the same way. Understanding how it works differently is key to knowing whether one is right for your home.

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