All D2P Cases
20 casesTedee: Building Trust in the Smart-Lock Market
Tedee is a Polish smart-home company focused on connected access. Its case illustrates how a hardware startup can compete in a sensitive category by combining compact product design, remote control, integrations, and an ecosystem approach. The central challenge was not simply to make a lock connected, but to make digital access feel dependable, understandable, and compatible with real homes. Tedee’s development shows the importance of reducing friction across installation, daily use, connectivity, and partner integration while communicating security without overclaiming. The case is useful for examining how product architecture and ecosystem design can support differentiation in a crowded smart-home market.
My Property Host: Turning Short-Term Letting Into a Managed Service
My Property Host is a UK short-term rental management business that helps property owners operate furnished accommodation without handling every hosting task themselves. Its proposition is built around taking responsibility for operational work such as guest communication, booking coordination, property preparation and the wider hosting experience. The case illustrates how a service business can create value by combining hospitality standards with property-owner convenience. Publicly available source material does not establish a verified financial result or a precise before-and-after metric, so the case focuses on the operating model and strategic logic rather than unsupported performance claims.
Alcove Group: Building a Better Operating Model for Shared Living
Alcove Group is a UK co-living business associated with youralcove.com. Its case illustrates how a shared-housing company can use technology, operational coordination, and resident-focused service design to address the friction found in traditional house shares. Rather than treating the business as only a property marketplace, Alcove positions the experience around managed homes, smoother administration, and a stronger sense of community. Publicly available source material does not establish a complete set of financial or operational metrics, so this case focuses on the strategic model and the observable logic of the business.
Silversun’s Strategic Shift from Solar Contractor to Installer-plus-IPP Platform
Silversun faced a strategic constraint common in distributed solar: project development and construction required capital, but a third-party contracting model limited its ability to retain assets and recurring generation income. Founded in 2019, the company historically developed, installed and built photovoltaic projects for others. In 2023, it accepted equity investment from Amundi, Crédit Agricole Alpes Provence Transitions and Sofipaca, explicitly accelerating its own asset portfolio and targeting a five-year project scale of 500 MW. The transformation continued in 2025. Silversun completed €40 million of financing, including €27 million of senior debt and a €13 million revolving credit facility, covering 90 projects and 25 MWp. A further €41 million of senior financing brought the year’s locked financing to €81 million, supporting 131 new plants and 42 MWp. Management also disclosed €48 million of 2025 group revenue, up organically by more than 35% from 2024. The company retained installation and construction while adding asset ownership and operation, creating a hybrid installer-plus-IPP model.
RENEWA’s Strategic Shift: From Tradesperson Matching to One-Stop Residential Energy Renovation
RENEWA began in December 2011 as a platform matching property owners with tradespeople. That model helped organize fragmented supply, but renovation customers still faced a difficult sequence of energy diagnosis, technical planning, subsidy applications, contractor selection and construction coordination. In 2015, REN EWA shifted to a One-Stop-Shop model and became the main contact for property owners pursuing comprehensive efficiency renovations. From 2017, it also served traditional tradespeople and used digital tools to support their workflows. In July 2022, PlanetHome acquired 50.1% and planned to extend the model from its main northern German base across Germany. REN EWA now publicly reports more than 70 employees and over 1,000 accompanied renovation projects, although public evidence does not independently establish revenue growth or post-investment profitability.
QHeat’s Deep Geothermal Shift: From Heat Production to Seasonal District-Heating Storage
QHeat’s Finnish case shows how a geothermal technology company can broaden its offer when heat extraction alone does not solve a customer’s peak-demand problem. The company and Lounavoima repositioned deep coaxial wells as seasonal thermal storage: summer surplus heat could be placed underground and used during winter district-heating demand. The first 1,600-meter well produced 450 MWh during January-March 2024 trials. Lounavoima then decided to add three wells, targeting a six-well, 6 MW storage system. QHeat also moved toward partner-led delivery, offering technology, downhole equipment, design, and lifecycle support. Its current company page reports five completed Finnish geothermal plants, 18 wells, and activity in Finland, Sweden, Norway, and Estonia. These figures are company-reported. Public evidence supports technical validation, project expansion, and market development, but not yet QHeat’s overall revenue, profit, or return on capital.
Polarstern Case Study: Scaling Green Energy Through Measurable Customer Impact and Building-Energy Services in Germany with Tenant Electricity and Distributed Solutions
Polarstern confronted a strategic problem common to green-energy retailers: renewable electricity alone could be perceived as a commodity, while building emissions also involve heating, mobility, and multi-tenant infrastructure. Its answer was to connect each customer transaction to explicit impact commitments: €20 annually per customer for renewable-energy projects in the Global South and €0.01 for every kilowatt-hour of Wirklich Ökostrom toward renewable expansion in Germany. The company then broadened its offer into tenant electricity, solar, heat pumps, charging infrastructure, and other distributed-energy services. Current public disclosures report approximately 410,000 tonnes of carbon dioxide reduced, about 65,000 people supported, and roughly 12,000 tenant-electricity households. The evidence supports scalable impact and a predominantly electricity-based business, but does not establish that one decision alone caused every result.
How Maxx Solar Built a Broader Regional Energy Platform Through Heat Pumps, Storage, Charging, and Integrated Customer Service
Maxx Solar & Energie, founded in 2008 in Waltershausen, Germany, faced a familiar strategic risk: strong photovoltaic demand could not be assumed to continue after the 2022–2023 energy crisis. In 2024, the company entered heat-pump installation and combined it with photovoltaic systems as an integrated energy solution. It simultaneously continued offering storage, electric-vehicle charging, solar carports, agricultural photovoltaics and tenant electricity, while keeping installation, monitoring, maintenance and repair capabilities. The company chose deeper regional specialization in Thuringia rather than pursuing national expansion alone. By September 2026, it reported about 90 employees and more than 7,000 completed projects. LinkedIn disclosures also claimed approximately 27% annual revenue growth since 2020 and a 2025 Growth Champions ranking of 214th in Germany, 21st in energy and utilities, and first in the Erfurt region. These are company-reported figures, not a complete audited performance history. The strategic lesson is therefore disciplined diversification, not proof that one decision caused every growth outcome.
How 81 klima turned seasonal demand into measurable digital acquisition
Air conditioning is seasonal, weather-sensitive, and difficult to sell through product visibility alone. Customers often need consultation, technical surveying, equipment selection, installation, and later maintenance. From 2018, Czech provider 81 klima used Kupi.cz shopping leaflets to present its products outside traditional air-conditioning media, direct visitors to its website, and place them into a Seznam Sklik retargeting path through an RTG code. The leaflets were subsequently renewed, and by the case publication they had been opened nearly 20,000 times. 81 klima said the cooperation achieved its objective of generating new customers and air-conditioning prospects. The company later extended promotion to its sister company 81 alarm. Public evidence does not disclose orders, conversion rate, acquisition cost, revenue, or profit attributable to Kupi.cz. Therefore, the defensible lesson is not that one campaign caused all later growth, but that a relevant shopping environment, retargeting, and a credible end-to-end service proposition created a more durable acquisition system.
Rhein-Sani: From Heating and Bathroom Trading to a Measurable Multichannel Home-Improvement Retail Model
Rhein-Sani GmbH offers a useful but deliberately limited example of business-model evolution in Germany’s heating, bathroom and home-improvement market. Founded on 8 August 2016 with registered capital of €25,000, the company initially traded heating and bathroom products. Public information later showed a broader model: its own markt-bau.de store sells heating, bathroom, bathroom-furniture and related products; the company also sells through METRO Marketplace and presents inventory, rapid dispatch, collection convenience and professional service as customer benefits. By 2026, the company publicly described approximately 1,800 square metres of operating space and more than 2,500 products. Registered capital increased to €50,000 on 8 May 2024. These facts support a shift toward owned e-commerce and multichannel distribution. They do not prove improved profitability, revenue growth, higher order volume, or a successful turnaround, because public sources disclose no comparable financial or operating metrics.
How LEDdiretto.it Built a Scalable Italian Lighting E-Commerce Operation
LEDdiretto.it did not scale through a publicly proven single campaign, technology launch, or advertising experiment. The verified evidence supports a broader operating decision: remain focused on LED lighting while building the capabilities needed to serve Italy nationally. Fenyx Italia expanded its professional lighting catalogue, improved product availability, organized warehouse operations, accelerated order processing, and strengthened pre- and post-sale support. The value proposition combined competitive price per lumen, high inventory availability, 24/48-hour order processing, and expert assistance. The resulting performance is material: revenue rose from EUR 4.387 million in 2021 to EUR 12.842 million in 2024, and Fenyx Italia ranked 134th in the Il Sole 24 Ore and Statista 2026 growth ranking. The evidence supports a reinforcing operating system, not a claim that one isolated initiative caused the growth.
Tecnologie Edili: Building a Multi-Service Construction Model
Tecnologie Edili expanded beyond traditional construction into renovation, equipment and scaffolding rental, cleaning, coatings, waterproofing, insulation and photovoltaic services. Its website reports coverage across Sicily, 25 professionals and continuing investment in advanced machinery. Financial data rose to a 2023 peak before falling sharply in 2024, so the diversification strategy remains unproven as a source of sustained profitability.
Strotmann Baustoffe: From Sole Proprietorship to GmbH
Strotmann Baustoffe reorganized the related transport, sand-pit, building-materials and disposal activities into a limited liability company. The carve-out clarified the operating entity and integrated the company’s regional service capabilities, while public evidence does not yet show measurable financial improvement.
Laqueste & Alessi: Growth Meets Public-Works Risk
French HVAC contractor Laqueste & Alessi broadened into renewable energy and maintenance while reported revenue and profit increased. A 2024 court judgment nevertheless exposed significant public-project quality and liability risk.
Koesea: From Specialist Contractor to Integrated Group
Koesea expanded from a narrow construction and finishing base into a multi-entity group spanning general contracting, civil engineering, real estate and equipment rental. Public procurement records confirm projects, but available evidence does not establish group-level profit improvement.
From Local Joinery Firm to Regional Installation Partner
Fenêtres Fermetures Du Doubs combined a 2021 name change and relocation with broader products, a FenêtréA partnership and Qualibat RGE credentials. The evidence shows stronger positioning, but not a proven financial uplift.
Di Remigio Costruzioni: Building a Broader Project Portfolio
Di Remigio Costruzioni expanded beyond regional building and renovation into public tenders, infrastructure-related services and new residential development. The evidence shows broader activity and ongoing projects, but not a proven causal link between a single strategic decision and financial improvement.
CTBI Builds Capacity for a Greener Construction Model
CTBI invested in owned storage, fabrication and headquarters plans to strengthen delivery capacity and compete across Île-de-France public and private construction markets.
Betsa: From Construction Renovation to Integrated General Contracting
Betsa GmbH was established in Germany in 2020. Public materials show that its website now positions the company as an integrated general contractor serving Munich and Bavaria, covering renovations, new construction, energy upgrades, photovoltaics, energy consulting, subsidy applications, and project management. However, no reliable public data proves that revenue, profit, customer numbers, or project performance have improved.
Amexbois: Rebuilding the Outdoor Facilities Supply Chain with Local Timber
French company Amexbois absorbed Scierie Forey to strengthen its chain from logs and sawing through design, processing and installation. From 2024, it stopped selling tropical timber and switched to timber sourced from forests within 150 kilometers of its production sites, while using certification and French manufacturing to reinforce its market position. The strategy supports traceable, customized outdoor facilities, but 2024 net profit fell below 2023, so profitability improvement remains unproven.