The deliverable D5.11: Trondheim dPEB Demonstration was submitted by ABB, TK, TE, RK, SV, and 4C with contributions from NTNU, Entra, ARUP, Volue, and Skanska in October 2022. The executive summary of the deliverable is available below and the full deliverable is at the end for download:
“This D5.11 report describes, details, and summarises the planning for, setting up, and deployment of two positive energy blocks (dPEBs) in the European Lighthouse City of Trondheim: Brattøra and Sluppen. The report also provides a set of guidelines for establishing dPEBs and important learning points and experiences from the deployment of the LHC Trondheim dPEBs.
Important main steps as a guideline for establishing dPEBs based on the Trondheim set-up and experiences are as follows:
- Select buildings, define dPEB system border, and map existing local RES
- Map, analyse, and decide on viable (based on cost/benefit assessments) energy efficiency measures in the dPEB buildings, including building specific and total annual energy savings. Tune this list with building owner(s) and facilitate decisions on what interventions to perform, and decision processes concerning financing/funding of measures
- Map the needs for additional RES in order to obtain a positive dPEB balance
- Decide on additional RES, secure funding, and define an agreed stakeholder map with clear responsibilities and tasks for each partner/actor
- Map and analyse prevailing technical and digital infrastructures and decide on additional necessary infrastructure for integrating the buildings into the dPEB. Integrate all RES and necessary local management systems onto one central
management system (DERMS)
- Perform step-by-step deployment of part solutions and evaluate the impacts along the way
- Establish a system/set-up for digital displaying and benchmarking of the outcomes and impacts, related to your KPIs. Communication channels for this towards the general public is important, and should be set up.
In order to obtain scalable dPEBs, a variety of measures and interventions are necessary. The Trondheim dPEB approach and solutions constitute the following ingredients: Energy efficiency measures, local energy production from PV and heat pumps, large battery storages to buffer surplus PV production and provide temporary energy storage, waste heat utilisation, sector coupling EL-thermal sector, integration of all building and local area
assets onto one central management system, and establishment of local energy and flexibility markets for energy coordination, and trade of energy, capacity, and system services. The local markets are based on innovative, project-developed energy trading and flexibility market solutions. Innovative energy solutions, services, and products claim the development of new investment and business models. In the +CityxChange project, these developments occur as a parallel demonstration project that will terminate and conclude through the D5.16 report +Trondheim sustainable investment and business concepts and models, that will be published during December 2022.
The development, set-up, and implementation of dPEBs that can be scaled to district level (PED) and beyond. This claims a specific and precisely defined set of actors with definite roles and responsibilities. The set of stakeholders needs to be defined and set up based on the types and list of measures and interventions for the specific dPEB and dPEB solutions. The crucial actors and their roles and main responsibilities for the dPEB set-up in Trondheim are as follows: Building owner(s) for the dPEB buildings, Asset/System integrator (all components in the dPEB need to be centrally controlled), Energy Trading Platform – ETP – developer and owner (for performing the trades in the Local Flexibility Market – LFM), LFM owner and operator, ESCO (for e.g. PV scheme at Sluppen), district heating network operator (district heating, distributed thermal energy solutions, sector coupling), EV sharing operator (EV batteries included through V2G EV charging).
Two dPEBs are deployed and demonstrated in LHC Trondheim: Sluppen and Brattøra:
Both dPEBs include local energy and flexibility markets with energy trading solutions as described above and large battery storages for surplus energy storage and buffering.
A selection of important experiences and learning points:
- The selection of viable buildings for the dPEB is crucial; detailed mapping and analyses needed (suitability, existing RES, efficiency potential, etc.)
- Building energy efficiency measures to be selected based on cost/benefit – also up against cost/benefit for new RES and RES investments
- Selection of and decision on the final package of efficiency and RES measures and interventions to be seen together; what is the most functionable and at the same time best package in terms of cost/benefit
- Economic analysis of investments and savings earliest possible; secure and anchor investments at actors in early stage
- A broad group of types of actors is needed in order to have functional dPEBs. Actor composition must be carefully selected
- Extremely clear functions and roles for each participating actor must be defined and anchored at each partner; agreements and contracts to be set up when/where appropriate necessary but not mandatory
- All buildings, assets, and dPEB interventions need to be integrated onto one central DERMS”