Project Description

Market development, market segment housing companies

In the coming years, housing associations will be faced with the task of making their building stock energy-efficient, climate-neutral and future-proof. At the same time, it is important to ensure the attractiveness of residential complexes for tenants and to comply with new legal requirements.

A key lever is the modernization of the energy supply:

  • Decarbonization of heat and power supply,
  • Integration of renewable energies,
  • and expansion of digital infrastructure to enable tenant electricity, neighborhood and smart building concepts.

In addition to affordable rent, tenants increasingly expect modern living standards that combine energy efficiency, sustainable supply and digital services. Here are the specific challenges:

  • Heat supply in existing buildings must be renewable, efficient and affordable for tenants.

  • The focus is on energy-efficient refurbishment and replacing outdated heating systems (gas/oil) – often for a large number of buildings of different ages.

  • Tenant electricity models with photovoltaics, storage and load management must be implemented – without overburdening the administration.

  • Digital building infrastructure (fiber optics, IoT, smart meters) must be integrated to improve transparency, control and billing.

  • Neighborhood solutions for heat, electricity, mobility and data networks must be harmonized technically and economically.

Developments and challenges

  • Social pressure: tenants demand low service charges, sustainability and digital services; ESG criteria are becoming increasingly important for investors.

  • Social pressure: Volatility and uncertainty characterize the international and European markets. Society is ageing and needs more care. The shortage of skilled workers and the low level of digitalization of administrative processes mean that changes are slow to take effect.

  • Economic pressure: Rising construction and energy costs, shortage of skilled workers in the trades and building services, limited budgets for renovations.

  • Technological trends: PV systems on roofs, large heat pumps, cold local heating, battery storage, tenant electricity clouds, smart building management.

  • Funding landscape: KfW programs for energy-efficient refurbishment (e.g. KfW 261/262), subsidies for tenant electricity, federal funding for efficient heating networks (BEW).

  • Best practices: Tenant electricity districts with PV, storage and heat pumps reduce ancillary costs and retain tenants in the long term.

EXAVY services

EXAVY develops, finances and operates turnkey infrastructure projects for the housing industry that combine the energy and digital transition in existing buildings:

  • Tenant electricity and neighborhood solutions

    • Planning, construction and operation of PV systems with battery storage on residential buildings.

    • Integration of tenant electricity clouds and intelligent load management.

  • Heat supply & efficiency projects

    • Conversion to renewable heat sources (large heat pumps, local heating networks, waste heat utilization).

    • Energy supply and energy-saving contracting for existing buildings.

  • Digital infrastructure

    • Fiber optic connections, IoT-capable measurement and control technology, smart building integrations.

  • Financing models without equity burden

    • Long-term contracting agreements, participation models with energy cooperatives, integration of subsidies.

    • Project development with optional partial or full exit to conserve liquidity.

Benefits for housing associations

  • Attractiveness & competitiveness: Modernized energy supply, lower ancillary costs, sustainable image.

  • Legal certainty: Compliance with legal requirements (GEG, EEG, ESG reporting).

  • Planning security: Long-term service contracts with guaranteed services and costs.

  • Freedom of investment: implementation without the use of equity – protection of the balance sheet.

  • Sustainability & CO₂ reduction: contribution to climate targets, higher property value, better rentability.