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November 27, 2025
An energy label shows how energy efficient a home is and what steps you can take to further improve it. The labels range from G (lowest) to A++++ (highest). Labels A, B, and C are considered "green labels." A C label is the lightest green category: relatively energy efficient, but with room for improvement.
The energy label is based on the fossil energy consumption of the home (expressed in kWh per m² per year). Home types built between 1965 and 1974 often score a C label if they have basic insulation, such as double glazing and some form of wall or roof insulation.
With limited improvement measures—such as extra insulation or installing solar panels—it is often possible to achieve a B or even A label.
A better energy label has advantages for your home's value, your energy bill, and your climate impact. But how do you get from C to B (or higher)?
An energy consultant first conducts a full home inspection, including a baseline measurement. Various options for measures are then calculated using energy performance software. Often, relatively simple adjustments are enough, such as:
Especially in homes built in the 1960s and 1970s, a single targeted measure can have a significant impact.
Renewable Partners can calculate exactly what steps are needed for your home — including material thicknesses and the most cost-effective improvement options.
Since January 1, 2023, a legal requirement has been in force in the Netherlands: offices must have at least energy label C. This is laid down in the 2012 Building Decree, which sets out requirements for safety, health, and energy efficiency.
If an office does not meet these requirements, it may no longer be officially used as a workspace. It is therefore important to take swift action if you manage or rent out commercial premises.
Renewable Partners supports companies with rapid inspections, sustainability advice, and guidance toward label C or higher.
A home with energy label C has a fossil energy consumption between 190 and 250 kWh per m² per year. For many homes—even older or pre-war houses—this is easily achievable by taking a few targeted insulation measures. Think of roof insulation, cavity wall insulation, or installing double glazing.
Many homeowners want to improve their energy label. A higher, greener label means lower heating costs in winter, greater living comfort, and a higher resale value for the home. But what steps are needed to go from a C label to a B label?
The process always starts with a full home inspection as a baseline measurement. Based on this, energy performance software calculates which measures are most cost-effective.
For a B label, fossil energy consumption must be reduced to 160–190 kWh per m² per year.
For homes built before 1975, it is often sufficient to implement one or two insulation improvements, such as:
Would you like to know exactly what steps are needed to improve your energy label? Then get in touch!
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The difference lies mainly in the degree of insulation and the proportion of sustainably generated energy. An A label can be achieved with good insulation and an efficient installation. For A+++, more is needed: a large proportion of the energy must be generated sustainably, for example with solar panels and a heat pump.
The energy label is determined based on the fossil energy consumption of the home, expressed in kWh/m² per year. For an A label, this value is between 105 and 160 kWh/m² per year. With good insulation, an A label is easily achievable. Homes built after 1991 often already have sufficient basic insulation to fall into this category. Solar panels are therefore not necessarily required to achieve an A label.
Practical experience – reliable energy expertise and results-oriented collaboration
An energy label shows how energy efficient a home is and what steps you can take to further improve it. The labels range from G (lowest) to A++++ (highest). Labels A, B, and C are considered "green labels." A C label is the lightest green category: relatively energy efficient, but with room for improvement.
The energy label is based on the fossil energy consumption of the home (expressed in kWh per m² per year). Home types built between 1965 and 1974 often score a C label if they have basic insulation, such as double glazing and some form of wall or roof insulation.
With limited improvement measures—such as extra insulation or installing solar panels—it is often possible to achieve a B or even A label.
A better energy label has advantages for your home's value, your energy bill, and your climate impact. But how do you get from C to B (or higher)?
An energy consultant first conducts a full home inspection, including a baseline measurement. Various options for measures are then calculated using energy performance software. Often, relatively simple adjustments are enough, such as:
Especially in homes built in the 1960s and 1970s, a single targeted measure can have a significant impact.
Renewable Partners can calculate exactly what steps are needed for your home — including material thicknesses and the most cost-effective improvement options.
Since January 1, 2023, a legal requirement has been in force in the Netherlands: offices must have at least energy label C. This is laid down in the 2012 Building Decree, which sets out requirements for safety, health, and energy efficiency.
If an office does not meet these requirements, it may no longer be officially used as a workspace. It is therefore important to take swift action if you manage or rent out commercial premises.
Renewable Partners supports companies with rapid inspections, sustainability advice, and guidance toward label C or higher.
A home with energy label C has a fossil energy consumption between 190 and 250 kWh per m² per year. For many homes—even older or pre-war houses—this is easily achievable by taking a few targeted insulation measures. Think of roof insulation, cavity wall insulation, or installing double glazing.
Many homeowners want to improve their energy label. A higher, greener label means lower heating costs in winter, greater living comfort, and a higher resale value for the home. But what steps are needed to go from a C label to a B label?
The process always starts with a full home inspection as a baseline measurement. Based on this, energy performance software calculates which measures are most cost-effective.
For a B label, fossil energy consumption must be reduced to 160–190 kWh per m² per year.
For homes built before 1975, it is often sufficient to implement one or two insulation improvements, such as:
Would you like to know exactly what steps are needed to improve your energy label? Then get in touch!
Practical experience – reliable energy expertise and results-oriented collaboration
I have experienced Renewable Partners as a reliable and professional party in the field of sustainable energy. They think along well, are transparent in their communication, and deliver customized solutions that really meet the need.
Professional and readily available for questions. I am very satisfied with the service and can recommend the company. Kind regards,
While my energy label doesn't matter at all, new residents are going to renovate the entire house, Nik has still made a thorough and clear report of my old farmhouse. TOP job. Thanks
The energy label inspector is a highly skilled professional who knows his trade. We were helped well and quickly with his advice. The reactions of this company are praising the price, the lowest, and the service, downright TOP!
The recording was done carefully. All documents and construction dimensions were checked/recorded by the advisor Ronan van der Loo. And good advice was given. He finished the recording within 2 hours.
