Services
Renewable Energy
Services
Cornwall Planning Groups in house specialist team of renewable energy specialists can provide Building Regulation reports to satisfy all elements of the approved documents and local authority requirements.
Building Regulations
The Building Regulations is to conserve fuel and power used in buildings. To ensure that minimum energy performance requirements laid down by these regulations are satisfied when constructing new buildings, it is necessary to demonstrate that the level of Carbon emissions resulting from the provision of heating, hot water, ventilation and internal fixed lighting are acceptable. Whilst the thermal performance of the building fabric is obviously important in reducing energy usage and Carbon emissions, such emissions can be significantly decreased through the use of renewable energy sources such as solar power, wind turbines and ground source heat pumps. The use of such technologies can not only be good for the environment and the pocket; they can also significantly increase flexibility in the design of new buildings.
If you wish to install renewable energy sources in existing buildings, it is likely that you will be required to give notification of the works under the Building Regulations. In addition, you may well need Planning Permission for your proposals, and you should contact the Planning Department for advice.
If you wish to install renewable energy sources in existing buildings, it is likely that you will be required to give notification of the works under the Building Regulations. In addition, you may well need Planning Permission for your proposals, and you should contact the Planning Department for advice.
Standard Assessment Procedure (SAP) and Energy Performance Certificates (EPC)
It is widely recommended that a build’s SAP rating is assessed before any planning applications are submitted, to ensure that a property’s annual energy cost is as low as possible.
Headed by a country-leading assessor, our SAP team have been trained to a government standard to perform accurate SAP calculations, preventing costly redesigns and streamlining the planning process as a whole. These services are offered as a useful addition to our building plans - no one knows our designs like we do, allowing us to solve any problems that arise efficiently and effectively.
Alternatively, our team is just as experienced in overseeing assessments of externally sourced plans, existing buildings and barn conversions. We are flexible enough to approach each new build in a cost-effective way - even incorporating renewable technology, for instance - to further improve a plan’s EPC rating whilst meeting building regulations.
Through our administrative and practical knowledge in adhering to legal power conservation documents, our projects receive bespoke EPC ratings when builds are finalised.
Headed by a country-leading assessor, our SAP team have been trained to a government standard to perform accurate SAP calculations, preventing costly redesigns and streamlining the planning process as a whole. These services are offered as a useful addition to our building plans - no one knows our designs like we do, allowing us to solve any problems that arise efficiently and effectively.
Alternatively, our team is just as experienced in overseeing assessments of externally sourced plans, existing buildings and barn conversions. We are flexible enough to approach each new build in a cost-effective way - even incorporating renewable technology, for instance - to further improve a plan’s EPC rating whilst meeting building regulations.
Through our administrative and practical knowledge in adhering to legal power conservation documents, our projects receive bespoke EPC ratings when builds are finalised.
Air Pressure Testing
Building Regulations require that an air pressure test (APT) is carried out on the majority of all newly built properties - especially new-dwelling houses, barn conversions and commercial buildings. Combatting air leakage and restriction, we ensure your build is building regulation compliant and energy efficient.
Offering a fast, reliable and thorough testing service across England and Wales, we are capable of joining a project at any point. Even in the developmental stage, we can perform accurate desktop calculations on an approved set of plans, preventing any unwanted surprises further along the building process.
Alternatively, bring us on board to head to the site ourselves for a full survey prior to an actual test - finely preparing your building through visual inspections and expert consultancy with your builders to solve any problems that arise. We’re ATTMA (The Air Tightness Testing & Measurement Association) certified, so you know you’re in safe hands.
As for the tests themselves, we use UKAS (United Kingdom Accreditation Service) calibrated equipment to perform an on-site air pressure test of the building envelope. This inspection of the exterior of the structure allows us to produce a detailed, illustrated test report that identifies any potential shortcomings, whilst suggesting solutions to ensure your build meets building regulations and is as cost-effective as possible.
Of course, these optimal results come when the APT is performed as part of a full plan application overseen by Cornwall Planning Group, so every aspect of your build compliments the impending tests. Upon completion, we will submit an Air Pressure Test Certificate to you, your builder and Building Control; meaning you don’t have to worry about a thing.
Offering a fast, reliable and thorough testing service across England and Wales, we are capable of joining a project at any point. Even in the developmental stage, we can perform accurate desktop calculations on an approved set of plans, preventing any unwanted surprises further along the building process.
Alternatively, bring us on board to head to the site ourselves for a full survey prior to an actual test - finely preparing your building through visual inspections and expert consultancy with your builders to solve any problems that arise. We’re ATTMA (The Air Tightness Testing & Measurement Association) certified, so you know you’re in safe hands.
As for the tests themselves, we use UKAS (United Kingdom Accreditation Service) calibrated equipment to perform an on-site air pressure test of the building envelope. This inspection of the exterior of the structure allows us to produce a detailed, illustrated test report that identifies any potential shortcomings, whilst suggesting solutions to ensure your build meets building regulations and is as cost-effective as possible.
Of course, these optimal results come when the APT is performed as part of a full plan application overseen by Cornwall Planning Group, so every aspect of your build compliments the impending tests. Upon completion, we will submit an Air Pressure Test Certificate to you, your builder and Building Control; meaning you don’t have to worry about a thing.
Water Calculations
The Government is driving a sustainable development programme that mandates improved water efficiency in the built environment. The Code for Sustainable Homes was introduced in 2007 and Part G of the Building Regulations now includes water efficiency for the first time. In addition, improved water efficiency in new development will be backed-up through the planning system, as the Government allows the planning system to mandate water efficiency targets in excess of the Building Regulations where there is demonstrable local need.
The Government updated Part G of the Building Regulations in April 2010. This sets a whole building standard of 125 litres per person per day for domestic buildings. This comprises internal water use of 120 litres per person per day, and in that respect is in line with Code Levels 1 and 2, plus an allowance of 5 litres per person per day for outdoor water use. This will be specified using the methodology set out in the 'Water Efficiency Calculator for New Dwellings' also used for the Code for Sustainable Homes.
The Government updated Part G of the Building Regulations in April 2010. This sets a whole building standard of 125 litres per person per day for domestic buildings. This comprises internal water use of 120 litres per person per day, and in that respect is in line with Code Levels 1 and 2, plus an allowance of 5 litres per person per day for outdoor water use. This will be specified using the methodology set out in the 'Water Efficiency Calculator for New Dwellings' also used for the Code for Sustainable Homes.
Solar Water Heating Panels
These panels absorb the energy from the sun and transfer it to heat water. A solar panel on a roof is likely to require notification under the Building Regulations, depending upon the size and load that the unit will place on the existing roof. You will need to show how the unit is fixed to the roof structure, together with the proposed alterations to any existing heating or hot water system.
Solar Electricity Panels
Photovoltaic (PV) panels transform solar radiation directly into electricity. PV systems can be integrated into buildings to generate electricity and for export to the national grid. A photovoltaic cell system on a roof is likely to require notification under the Building Regulations, depending upon the area of the roof covered and how the power they provide is integrated into the existing electrical system.
Wind Turbines
Wind turbine technology harnesses wind to generate electricity. The electricity is then either used for stand alone applications or for export to the national grid. In most cases a Building Regulations notification will be necessary for the installation of wind turbines on a house, as the size, weight and force exerted on fixing points would need to be considered. The integration of the power they provide into the existing electrical system is also an important consideration.
The Simplified Method
With UK temperatures on the rise, overheating in homes is an increasing concern. To help address this, Approved Document Part O came into force on 15 June 2022, setting clear standards to limit overheating and improve comfort, sleep quality, and overall well-being.
For standard house types, the Simplified Method offers a quick and effective way to assess glazing and ventilation requirements at the design stage. But for more contemporary or complex developments, this approach can be restrictive.
That’s where Cornwall Planning Group offers added value. Through Dynamic Thermal Modelling, we provide a more detailed assessment that accounts for a broader range of environmental and architectural factors — giving you greater design flexibility while ensuring full compliance with Part O.
For standard house types, the Simplified Method offers a quick and effective way to assess glazing and ventilation requirements at the design stage. But for more contemporary or complex developments, this approach can be restrictive.
That’s where Cornwall Planning Group offers added value. Through Dynamic Thermal Modelling, we provide a more detailed assessment that accounts for a broader range of environmental and architectural factors — giving you greater design flexibility while ensuring full compliance with Part O.
Dynamic Thermal Modelling (DTM)
Dynamic Thermal Modelling (DTM) uses advanced simulation software to create 3D models of buildings, assessing how they perform in real-world conditions. This includes analysing energy use, internal heat gains and losses, daylight levels, and overall environmental performance.
The software draws on real-time weather and solar data, tailored to the building’s specific location and orientation. It also factors in detailed inputs such as construction materials, ventilation systems, occupancy patterns, zoning, and HVAC design.
By running room-by-room simulations over a full year, DTM provides a comprehensive picture of a building’s thermal behaviour—informing smart design decisions and helping ensure compliance with Part O.
• Site and Design Assessment
We begin by reviewing the building’s layout and surroundings to evaluate potential heat risks and opportunities for passive cooling—such as the use of openable windows.
• Thermal Simulation
Using DTM tools, we model the building’s heat performance in detail, helping to optimise thermal comfort throughout the year.
• Heat Gain Reduction
We identify practical measures to reduce internal heat gain. This might include improving glazing specifications, adding external shading, adjusting window sizes, or introducing ceiling fans.
• Cooling Strategy Development
We propose tailored solutions for heat removal, starting with natural ventilation options. Where necessary, we may recommend acoustic louvres, mechanical ventilation, or—only as a last resort—mechanical cooling.
• Client Review & Agreement
We review the findings with you and agree on the best approach, ensuring it meets both regulatory requirements and design objectives.
• Delivery of Final Strategy
A clear, actionable strategy is then documented, outlining how the solution will be integrated into the overall building design.
Overheating is an increasing risk in modern building design, affecting health, comfort, and productivity. In England and Wales, it's estimated that around 2,000 heat-related deaths occur each year—a figure likely to rise with ongoing climate change.
To tackle this issue, Approved Document O was introduced, setting legal requirements to help prevent overheating in new residential buildings. The current version, issued in December 2021, applies to all residential planning and building regulation applications made from 15 June 2022 onwards.
At Cornwall Planning Group, we help you navigate these regulations with confidence—using Dynamic Thermal Modelling to deliver safe, comfortable, and compliant buildings.
The software draws on real-time weather and solar data, tailored to the building’s specific location and orientation. It also factors in detailed inputs such as construction materials, ventilation systems, occupancy patterns, zoning, and HVAC design.
By running room-by-room simulations over a full year, DTM provides a comprehensive picture of a building’s thermal behaviour—informing smart design decisions and helping ensure compliance with Part O.
How it works
• Site and Design Assessment
We begin by reviewing the building’s layout and surroundings to evaluate potential heat risks and opportunities for passive cooling—such as the use of openable windows.
• Thermal Simulation
Using DTM tools, we model the building’s heat performance in detail, helping to optimise thermal comfort throughout the year.
• Heat Gain Reduction
We identify practical measures to reduce internal heat gain. This might include improving glazing specifications, adding external shading, adjusting window sizes, or introducing ceiling fans.
• Cooling Strategy Development
We propose tailored solutions for heat removal, starting with natural ventilation options. Where necessary, we may recommend acoustic louvres, mechanical ventilation, or—only as a last resort—mechanical cooling.
• Client Review & Agreement
We review the findings with you and agree on the best approach, ensuring it meets both regulatory requirements and design objectives.
• Delivery of Final Strategy
A clear, actionable strategy is then documented, outlining how the solution will be integrated into the overall building design.
Why It Matters
Overheating is an increasing risk in modern building design, affecting health, comfort, and productivity. In England and Wales, it's estimated that around 2,000 heat-related deaths occur each year—a figure likely to rise with ongoing climate change.
To tackle this issue, Approved Document O was introduced, setting legal requirements to help prevent overheating in new residential buildings. The current version, issued in December 2021, applies to all residential planning and building regulation applications made from 15 June 2022 onwards.
At Cornwall Planning Group, we help you navigate these regulations with confidence—using Dynamic Thermal Modelling to deliver safe, comfortable, and compliant buildings.
Energy Statements
Most Local Planning Authorities (LPAs) now require a detailed Energy Statement as part of planning applications for both residential and commercial developments. These statements are designed to demonstrate how proposals will reduce carbon emissions and meet local and national sustainability targets.
In many cases, LPAs also require that a portion of a development’s energy demand is met through on-site renewable sources. Broader requirements may include water efficiency targets or achieving sustainability certifications such as BREEAM.
The level of carbon reduction required varies by local authority, typically benchmarked against Part L of the Building Regulations. Targets often range from a 10% to 35% reduction in emissions—so it’s vital to understand the specific requirements for your site.
At Cornwall Planning Group, our experienced team delivers tailored Energy Statements that align with your development goals and local authority expectations.
Since 15 June 2023, Cornwall Council has implemented specific energy standards for all new developments:
• Residential Developments
New homes must be designed to minimise energy use and incorporate renewable technologies—with a strong emphasis on solar photovoltaics (solar PV).
Applications must include an Energy Report and an Energy Summary Tool, supported by SAP calculations.
• Non-Residential Developments (over 1,000m²)
Major commercial schemes must provide an Energy Report and an estimate for achieving a BREEAM ‘Excellent’ rating (or an approved equivalent).
We’re well-versed in Cornwall Council’s policies and requirements, and work closely with planning officers to ensure a compliant, well-supported submission.
Our accredited team prepares comprehensive Energy Statements across a range of project types—from single dwellings to complex mixed-use schemes. Services include:
• Site-specific planning policy review
Understanding your LPA’s sustainability requirements from the outset
• SAP assessments
Calculating energy use and carbon emissions for residential buildings
• Dynamic Thermal Modelling (DTM)
Demonstrating how overheating risks are addressed and managed
• Energy hierarchy analysis
Clearly outlining the steps taken to reduce demand, increase efficiency, and incorporate renewables
• BREEAM strategy guidance
Supporting non-residential applications aiming for Excellent (or equivalent) ratings
• Water efficiency calculations
Evaluating usage and helping you meet key consumption targets
Whether you're developing a single home or a large commercial site, Cornwall Planning Group ensures your application meets the latest energy and sustainability standards—giving you the best chance of planning success.
In many cases, LPAs also require that a portion of a development’s energy demand is met through on-site renewable sources. Broader requirements may include water efficiency targets or achieving sustainability certifications such as BREEAM.
The level of carbon reduction required varies by local authority, typically benchmarked against Part L of the Building Regulations. Targets often range from a 10% to 35% reduction in emissions—so it’s vital to understand the specific requirements for your site.
At Cornwall Planning Group, our experienced team delivers tailored Energy Statements that align with your development goals and local authority expectations.
Cornwall Council Energy Statement Policy
Since 15 June 2023, Cornwall Council has implemented specific energy standards for all new developments:
• Residential Developments
New homes must be designed to minimise energy use and incorporate renewable technologies—with a strong emphasis on solar photovoltaics (solar PV).
Applications must include an Energy Report and an Energy Summary Tool, supported by SAP calculations.
• Non-Residential Developments (over 1,000m²)
Major commercial schemes must provide an Energy Report and an estimate for achieving a BREEAM ‘Excellent’ rating (or an approved equivalent).
We’re well-versed in Cornwall Council’s policies and requirements, and work closely with planning officers to ensure a compliant, well-supported submission.
How We Help
Our accredited team prepares comprehensive Energy Statements across a range of project types—from single dwellings to complex mixed-use schemes. Services include:
• Site-specific planning policy review
Understanding your LPA’s sustainability requirements from the outset
• SAP assessments
Calculating energy use and carbon emissions for residential buildings
• Dynamic Thermal Modelling (DTM)
Demonstrating how overheating risks are addressed and managed
• Energy hierarchy analysis
Clearly outlining the steps taken to reduce demand, increase efficiency, and incorporate renewables
• BREEAM strategy guidance
Supporting non-residential applications aiming for Excellent (or equivalent) ratings
• Water efficiency calculations
Evaluating usage and helping you meet key consumption targets
Whether you're developing a single home or a large commercial site, Cornwall Planning Group ensures your application meets the latest energy and sustainability standards—giving you the best chance of planning success.