K&S Energy GmbH · Offenbach am Main

Energy transition and GEG, designed for your existing buildings

Engineers who advise, plan and support landlords across the Rhine-Main region – practical, manufacturer-neutral and costed with figures that hold up.

Are you an energy consultant? CAD service: building models from your plans

Existing residential building with the outdoor unit of a heat pump
Our focus

Energy consulting and CAD service

Two services from one engineering practice: we advise owners and landlords on refurbishment – and take the modelling work off energy consultants' hands.

Building floor plan with scale ruler and pencil
For energy consultants

CAD service via eee-cad.de

We turn existing building plans into a three-dimensional building model that you continue working on in your own software. Assessment and professional responsibility stay with you – the time-consuming modelling is done by us.

  • Plans as PDF, scan or photo
  • Queries instead of assumptions
  • Model file to suit your software
Gas meter and heating installation in an existing building
The situation

It is getting more complex for property owners

  • Rising CO₂ charges push up the operating costs of fossil heating systems.
  • Vacancy and tenant dissatisfaction follow from high ancillary costs.
  • Increasingly complex regulations, funding programmes and refurbishment obligations call for thorough planning.

What to expect for heating oil, natural gas and district heating is set out on the CO₂ cost development page.

Our approach

Technology, economics and strategy in one plan

Four building blocks that come together in every project, whether it is a single-family house or a large apartment building.

Individual energy concepts

Developed from the building's condition and use – practical, technology-open and manufacturer-neutral.

Profitability and cost estimates

Engineering and business expertise produce reliable figures you can base a decision on.

Optimised cost allocation

We use the allocation options the law allows, so the investment stays viable and tenants are relieved over time.

Reliable implementation

We guide you through planning, contractor recommendations and funding applications through to completion.

The outcome

A gain for everyone involved

Our planning reduces CO₂ emissions and creates lasting benefits for landlords and tenants at the same time:

  • Lower heating costs despite a possible increase in net cold rent
  • More comfort and greater tenant satisfaction
  • Preservation of value and of the fabric of your property

How refurbishment costs can be passed on and depreciated is explained under levies and depreciation.

Heat pump installed outside a refurbished residential building
About us

Why we founded K&S Energy

More than two-thirds of all residential buildings in Germany are energetically outdated. That is the largest CO₂ savings potential of our time, and it is exactly where we work.

Engineering knowledge meets practice

We come from industry, think in systems and work precisely and pragmatically – so that heat pumps and building automation actually perform in an existing building.

Focused on existing buildings

Our solutions are technology-open and manufacturer-neutral, tailored to the property in front of us. We do not sell equipment.

Economics that hold up

Business expertise gives realistic amortisation figures rather than the most flattering calculation available.

Listed energy efficiency experts

K&S Energy is entered in the German federal list of energy efficiency experts – the precondition for BEG funding through KfW and BAFA. More about us

Secure your property for the future

A first conversation costs nothing and usually settles whether a measure is worth doing – and in which order – before you commission anything.