Serving Essex and the East of England
Solar & Heat Pump Installation Specialists
Get expert renewable solutions tailored to your home or business and start saving thousands on your energy bills.
Take control of your energy
Explore our renewable energy solutions designed to cut your bills and carbon footprint.
Solar PV
☀️ Generate your own electricity.
Battery Storage
🔋 Store and use energy when you need it.
Heat Pumps
🔥 Efficient heating, year-round comfort.
Take control of
your energy
Explore our renewable energy solutions designed to cut your bills and carbon footprint.
Solar PV
☀️ Generate your own electricity.
Battery Storage
🔋 Store and use energy when you need it.
Heat Pumps
🔥 Efficient heating, year-round comfort.
Why Choose Cranmer Renewables?
We take a consultative approach where every system is designed around your home, your goals, and your energy use so it works exactly how you need it to.
As a trusted local team with more than ten years of hands-on experience fitting solar, battery, and heat pump systems across the East of England, we take pride in delivering quality workmanship and personal service. You will always deal directly with the people who design and install your system, never a call centre or sales team.
Tailored system design
Every installation starts with a detailed survey to understand your property and energy needs. We then build a bespoke setup that delivers maximum savings from day one.
Quality installations, done right
All systems are installed by our experienced team using high-quality components built to last. We never cut corners or outsource, just reliable workmanship you can trust.
Proven results, real savings
With hundreds of installs completed and a 5-star Google rating, our systems are saving customers thousands each year while cutting carbon emissions.
Personal service from start to finish
We handle everything in-house, from your first consultation to installation and aftercare. You’ll always have a familiar name to call if you ever need help or advice.
Why Choose Cranmer Renewables?
We take a consultative approach where every system is designed around your home, your goals, and your energy use so it works exactly how you need it to.
As a trusted local team with more than ten years of hands-on experience fitting solar, battery, and heat pump systems across the East of England, we take pride in delivering quality workmanship and personal service. You will always deal directly with the people who design and install your system, never a call centre or sales team.
Tailored system design
Every installation starts with a detailed survey to understand your property and energy needs. We then build a bespoke setup that delivers maximum savings from day one.
Quality installations, done right
All systems are installed by our experienced team using high-quality components built to last. We never cut corners or outsource, just reliable workmanship you can trust.
Proven results, real savings
With hundreds of installs completed and a 5-star Google rating, our systems are saving customers thousands each year while cutting carbon emissions.
Personal service from start to finish
We handle everything in-house, from your first consultation to installation and aftercare. You’ll always have a familiar name to call if you ever need help or advice.
Our Simple 3-Step System To Energy Independence
Switching to renewable energy shouldn’t be complicated. We make the whole process simple and seamless — from your first conversation to installation day.
📞 Telephone Consultation
We start with a quick, no-pressure call to understand your property, energy use, and goals. From there, we can give you honest advice on the best system for your needs and budget.
🏠 In-Person Survey
Next, we’ll visit your home to take detailed measurements and check your existing setup. This ensures your system design is accurate, efficient, and tailored to your property.
🛠️ Professional Installation
Our qualified engineers & electricians install your system with care and precision. Once it’s running, we’ll set up your monitoring app and show you how to get the most from it.
Our Simple 3-Step System To Energy Independence
Switching to renewable energy shouldn’t be complicated. We make the whole process simple and seamless — from your first conversation to installation day.
📞 Telephone Consultation
We start with a quick, no-pressure call to understand your property, energy use, and goals. From there, we can give you honest advice on the best system for your needs and budget.
🏠 In-Person Survey
Next, we’ll visit your home to take detailed measurements and check your existing setup. This ensures your system design is accurate, efficient, and tailored to your property.
🛠️ Professional Installation
Our qualified engineers & electricians install your system with care and precision. Once it’s running, we’ll set up your monitoring app and show you how to get the most from it.
Our Projects
We're proud of the work we do. Take a peak at our installs 👀
Our Projects
We're proud of the work we do.
Take a peak at our installs 👀
Our Accreditations
Our Accreditations
Frequently Asked Questions
Solar FAQ
Do I need solar panels to get a battery storage system?
No, you do not need solar panels to benefit from a battery. You can have a battery installed without panels and take advantage of cheaper charging times. For most energy providers, this is during the night between 01:00 and 06:00.
How does solar work?
Solar panels turn sunlight into electricity using special cells. These cells create direct current (DC) electricity when the sun hits them. Then, an inverter changes this DC electricity into the alternating current (AC) electricity that powers your home.
How long will my solar system last for?
Solar PV systems have no moving parts other than the inverter, and as such have very long life spans. The inverter should last for more than 10 years, and may cost £1,000 or less to replace, depending on the model required to support the panels installed. An extended, 10-year warranty is often offered by the installer prior to fitting or can be directly arranged with the inverter manufacturer upon completion of the installation if required. This extends the warranty from the standard 5 years up to 10 years in total. Panels should last more than 25 years with performance guarantees in place to ensure a satisfactory level of performance for at least the first 20 years in most cases.
How much sunshine is required for my solar system to work?
Daylight is all that is required for solar panels to produce energy to be used in the home. Even when it's cloudy, foggy, overcast and in winter, solar panels capture whatever sunlight is available.
How soon will I start saving money from solar?
You start seeing the benefit as soon as your system is switched on. During daylight hours, your solar panels generate electricity for your home, which means you rely less on power from the grid. Your exact savings will depend on factors like your energy usage, roof orientation, system size, and whether you include a battery. Independent organisations such as the Energy Saving Trust note that homeowners can reduce their electricity bills when a solar system is designed around their property and usage.
What is a battery storage system?
A battery storage system can be installed in your home and store excess/surplus energy generated by a solar PV system or purchased from the grid. A battery solution allows you to rely less on the grid during high rate electric periods, use stored energy to power appliances in your home, and even charge an electric vehicle or vehicles that you may own. By using stored energy, you can make savings on electrical bills and depend on renewable energy more often.
Heat Pump FAQ
What is a heat pump and how does it work?
A heat pump takes warmth from the air outside your home and moves it indoors to heat your rooms and hot water. It works a bit like a fridge in reverse. Instead of removing heat, it captures it and transfers it to where you need it most.
Are heat pumps suitable for my home?
In most cases they are. Heat pumps work well in houses, flats and even older properties. The main thing is having good insulation so your home keeps the heat in. During your survey we will check your setup and let you know exactly what is needed.
Do heat pumps work in cold weather?
Yes they do. Modern air source heat pumps are designed for the British climate and can extract heat even when it is below freezing. You will still have reliable and efficient heating throughout the year.
Do I need to change my radiators?
Not always. Many homes already have radiators that work perfectly with heat pumps. Sometimes we recommend larger ones or an upgrade to make the system even more efficient. We will confirm what is best during your home assessment.
Will a heat pump save me money?
Heat pumps can reduce your heating costs, especially if you currently heat your home with oil, LPG or direct electric. A heat pump uses far less energy to produce the same amount of heat compared with traditional electric heating, and bodies like the Energy Saving Trust confirm they can deliver more heat energy than the electricity they consume. Combined with solar panels or off-peak charging via a battery system, your running costs can be even lower — and you stay protected from rising energy prices.
Are heat pumps noisy?
They’re very quiet. The outdoor unit makes a gentle hum (about the same as a fridge or quiet conversation). We always make sure it’s positioned so you’ll barely notice it running.
Frequently Asked Questions
Solar FAQ
Do I need solar panels to get a battery storage system?
No, you do not need solar panels to benefit from a battery. You can have a battery installed without panels and take advantage of cheaper charging times. For most energy providers, this is during the night between 01:00 and 06:00.
How does solar work?
Solar panels turn sunlight into electricity using special cells. These cells create direct current (DC) electricity when the sun hits them. Then, an inverter changes this DC electricity into the alternating current (AC) electricity that powers your home.
How long will my solar system last for?
Solar PV systems have no moving parts other than the inverter, and as such have very long life spans. The inverter should last for more than 10 years, and may cost £1,000 or less to replace, depending on the model required to support the panels installed. An extended, 10-year warranty is often offered by the installer prior to fitting or can be directly arranged with the inverter manufacturer upon completion of the installation if required. This extends the warranty from the standard 5 years up to 10 years in total. Panels should last more than 25 years with performance guarantees in place to ensure a satisfactory level of performance for at least the first 20 years in most cases.
How much sunshine is required for my solar system to work?
Daylight is all that is required for solar panels to produce energy to be used in the home. Even when it's cloudy, foggy, overcast and in winter, solar panels capture whatever sunlight is available.
How soon will I start saving money from solar?
You start seeing the benefit as soon as your system is switched on. During daylight hours, your solar panels generate electricity for your home, which means you rely less on power from the grid. Your exact savings will depend on factors like your energy usage, roof orientation, system size, and whether you include a battery. Independent organisations such as the Energy Saving Trust note that homeowners can reduce their electricity bills when a solar system is designed around their property and usage.
What is a battery storage system?
A battery storage system can be installed in your home and store excess/surplus energy generated by a solar PV system or purchased from the grid. A battery solution allows you to rely less on the grid during high rate electric periods, use stored energy to power appliances in your home, and even charge an electric vehicle or vehicles that you may own. By using stored energy, you can make savings on electrical bills and depend on renewable energy more often.
Heat Pump FAQ
What is a heat pump and how does it work?
A heat pump takes warmth from the air outside your home and moves it indoors to heat your rooms and hot water. It works a bit like a fridge in reverse. Instead of removing heat, it captures it and transfers it to where you need it most.
Are heat pumps suitable for my home?
In most cases they are. Heat pumps work well in houses, flats and even older properties. The main thing is having good insulation so your home keeps the heat in. During your survey we will check your setup and let you know exactly what is needed.
Do heat pumps work in cold weather?
Yes they do. Modern air source heat pumps are designed for the British climate and can extract heat even when it is below freezing. You will still have reliable and efficient heating throughout the year.
Do I need to change my radiators?
Not always. Many homes already have radiators that work perfectly with heat pumps. Sometimes we recommend larger ones or an upgrade to make the system even more efficient. We will confirm what is best during your home assessment.
Will a heat pump save me money?
Heat pumps can reduce your heating costs, especially if you currently heat your home with oil, LPG or direct electric. A heat pump uses far less energy to produce the same amount of heat compared with traditional electric heating, and bodies like the Energy Saving Trust confirm they can deliver more heat energy than the electricity they consume. Combined with solar panels or off-peak charging via a battery system, your running costs can be even lower — and you stay protected from rising energy prices.
Are heat pumps noisy?
They’re very quiet. The outdoor unit makes a gentle hum (about the same as a fridge or quiet conversation). We always make sure it’s positioned so you’ll barely notice it running.
A trusted local team helping families and businesses across the East of England save on their energy bills with renewable solutions.
Cranmer Installations Ltd (t/a Cranmer Renewables)
Registered in England & Wales (09408642)
Registered address: Chalice House Bromley Road, Elmstead, Colchester, England, CO7 7BY
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