Dalkia specialises in...

Providing the best solutions for multi-residence housing to support the energy transition


Implementing an energy revival in housing is one of the key goals of the French Energy Transition Act for Green Growth. Harmonis provides a concrete, cost-effective, responsible, operational solution that ensures both resident comfort and energy savings.

Bespoke solutions for renovation projects

Harmonis provides a solution to improve energy performance and ensure housing comfort with a focus on designing, implementing and financing projects to pursue housing renovations and unlock energy savings.

Cost-effective comfort

Harmonis ensures an overall heating budget that includes managing and supplying energy at the best possible price. It also offers group lending options for co-owners.

Guaranteed energy savings

This option ensures reduced energy consumption with or without refurbishments while limiting outlay.

A local service available when and where needed

Dalkia provides local specialists who are on hand to help 24/7.

Tailored technical expertise

Harmonis delivers innovative, effective solutions to ensure that heating services meet standards in terms of availability and quality, even while work is being carried out, in line with relevant regulations.

A responsible, long-term commitment

Harmonis reduces the carbon footprint of buildings and offers energy coaching services for residents. It also encourages initiatives to support social diversity and local jobs.

Harmonis in figures


The number of housing units that France aims to upgrade each year as part of its energy revival starting in 2017

40 %

Potential energy savings with Harmonis

2 million

the number of housing units heated by Dalkia


Energy reporting

Track energy consumption and KPI with Inviso®.

Trading room

Innovative, tailored solutions to buy energy at the best possible price.

Energy coaching

Awareness and coaching initiatives to make building occupants more aware of energy savings.


Clear information on energy use to promote greener practices.

Renewable energy solutions for building heating systems

Renewable energy solutions for building heating systems: Avenir biomasse® supplies a secure source of heating from wood-fired heating plants.

Energy performance management

Energy performance management services unlock long-term savings.

Group lending solutions for co-owners

Harmonis loan (for the Harmonis solution): a financing solution for co-owner projects after subsidies and tax incentives.

Energy Savings Certificates ESC


Dalkia is with you every step of the way from designing eligible projects to securing ESCs

Harmonis and you

Would you like to hear more about our solutions?