watts
Services
Concepts and feasibility studies
We prepare feasibility studies for energy systems, including forecasts of energy demand, analysis of renewable energy potentials, presentation of regulatory framework conditions, simulation of systems, estimation of investment and operating costs and evaluation of economic efficiency, taking into account sensitivity analyses.
- Holistic transformation plans and climate protection concepts
- Energy concept and climate design for buildings
- Energy-efficient neighborhood concepts
- Individual building renovation roadmaps
- Municipal heat planning
- Climate adaptation concepts
Feasibility study “Blechenstrasse heating solution”
Feasibility study for the heat supply of a residential complex in Berlin: analysis of the existing natural gas-based situation, techno-economic comparison of district heating and heat pump solutions as possible alternatives with CO₂ price risk assessment. Goal: Efficient, resilient heat supply for 67 residential units.
Funding and sub-project management LowEx network TXL
We are supporting the development of the innovative bidirectional LowEx network on the former site of Berlin Tegel Airport.
Refurbishment roadmap and implementation support
Technical status analysis of the electricity-based, decentralized heating and cooling supply with development of measures to reduce energy costs. Focus: operational optimization of ventilation and air conditioning units with measurement and control adjustment
Energy analysis and district heating check
The heating, cooling and power supply for the Toom store in Hanover was analyzed. The analysis focused on the economic analysis for the conversion of natural gas-based heat generation to district heating.
Energy concept and implementation consulting
Since 2025, there has been a new energy supply for the www.stechlin-institut.org. In the middle of the forest, a water-bearing wood-burning stove provides cozy warmth in selected zones on cold days. A geothermal heat pump provides the basic temperature, supplemented by solar thermal energy for hot water. Photovoltaic modules and translucent PV elements on the terrace roof match the roof. An electric charging station completes the infrastructure. The result is an energy-efficient system that blends harmoniously into the tranquil, natural setting.
Watts supported the design and the application for funding.
Refurbishment schedules for halls of residence
Refurbishment roadmap with measure cost estimate and energy savings forecast for two day care facilities with operational optimization
Award, project and subsidy management
We support public clients, organizations and project sponsors in awarding procedures, the efficient management of complex projects and the successful application for and processing of subsidy. With clearly structured service modules, we offer customized solutions — for the implementation of your idea.
- Market sounding with bidder review and bid evaluation
- Creation of functional service descriptions
- Project management with cost, deadline and quality control
- Subsidy check, application and implementation support
Expert competition support for VGV school remodeling competition
Expert support for a VGV school building competition with a focus on indoor air quality, thermal comfort in winter and effective heat protection in summer. Evaluation of the designs with regard to robust low-tech ventilation concepts, passive cooling strategies and energy-efficient building technology as a basis for sustainable, user-oriented planning.
Funding and sub-project management LowEx network TXL
Refurbishment roadmap and implementation support
Energy concept and implementation consulting
Project management heat pump, PV, ventilation
Techno-economic feasibility analysis for the use of air-source heat pumps in the retail center, optimization of ventilation incl. Implementation support with tendering of planning services, control of the implementation of heat pump, photovoltaic and ventilation system conversion.
Funding concepts for local heating networks
We support Berlin’s municipal utilities in the application and implementation of current funding programs for the development of various local heating networks.
Consulting and audits
We offer holistic energy and sustainability consulting — from ESG and CRREM analyses, energy audits and ISO 50001 implementations to cost checks, life cycle analyses and optimized electricity and heating strategies. In addition, we prepare GHG balances, carry out energy simulations, advise on storage and waste heat and provide support with workshops and expert advice on building technology and sustainability.
- ESG consulting, risk check (CRREM) and carbon due diligence
- Energy audit DIN EN 16247 Implementation
- ISO 50.001 Energy management implementation
- Cost check for contracting vs. in-house solution
- Ecological and economic life cycle analyses
- Optimization of electricity and heat purchasing strategies
- Greenhouse gas balancing
- Energy and thermal simulations
- Storage system consulting and waste heat checks
- Workshops and lectures — renewable energies, energy efficiency, sustainability
- Expert competition support for building technology and sustainability
Energy audit local heating Tegel
Energy audit according to DIN 16247 with implementation plan and calculation of measures according to VALERI. Focus on optimization of local heating network system with generation and distribution.
PV Onsite PPA for logistics, retail, hotel and office
Analysis of requirement criteria in a workshop with subsequent 2‑stage market survey of photovoltaic suppliers. Evaluation of economic and technical performance as well as the operator model option roof lease model with onsite PPA.
Implementation of energy management ISO 50.001
As part of the energy management implementation, organizational consulting is provided, including the development of an energy policy, action plan and legal register. A detailed analysis of the energy flows and waste heat potential is carried out with the development of measures.
Refurbishment schedules for halls of residence
Energy management ISO 50.005
Workshop on energy management implementation in accordance with ISO 50.005 with action plan development
Energy audit with steam check
Energy audit in accordance with DIN 1647 with implementation plan for measures such as steam generation, water heating and cooling waste heat utilization