For ESCO and energy service companies
ESCO cooperation – Green AC&DC Energy™
A data-driven framework that lets ESCOs build scalable portfolios of electricity saving projects – with clear Δ-Indicator™ / ΔE* results across hotels, households, retail and industry.
We usually start with one or two pilot sites (hotel, supermarket, residential block) and then replicate the approach across the client’s wider portfolio.
What ESCO cooperation under Green AC&DC Energy™ means
Green AC&DC Energy™ is a practical framework that links technical measures with a clear, comparable savings indicator (Δ-Indicator™ / ΔE*). It focuses on electricity consumption of appliances and systems that can be replaced or upgraded quickly – from minibars and household fridges to commercial refrigeration and selected industrial equipment.ESCO partners use this framework to structure projects in hotels, multi-apartment buildings, retail & wholesale sites and public or industrial facilities. The same ΔE* logic can be applied to individual pilot sites or to large, multi-country portfolios.
You keep your client relationships and implementation business; the programme provides the methodology, technology selection logic and the ΔE* performance engine so that every project follows the same rules and delivers comparable, verifiable savings.
In the first phase we are focusing on pilots in selected EU Member States, starting with hotels, supermarkets and residential buildings, and then expanding to wider ESCO portfolios in cooperation with local partners.
Programme roles
1. Roles in the programme
- Author (Green AC&DC Energy™ / ΔE*): owns the methodology, defines the measurement protocol, selects or approves new equipment and calculates ΔE* and system-level savings.
- ESCO Partner: acts as the operational arm in the field: organises metering, finances and installs the approved equipment and maintains the relationship with the client.
- Client: owns the site and the equipment, provides access for measurements and benefits from lower energy bills and improved comfort.
Who can join
Who this partnership model is for
- ESCOs focused on supermarkets, retail and cold-chain projects.
- ESCOs working with hotels, hospitality and tourism portfolios.
- ESCOs managing public buildings, hospitals, care homes or industry.
- Utilities and energy service companies looking for a standardised savings engine (ΔE*) across many sites and countries.
2. Step-by-step process with ESCOs
Baseline – measuring the existing situation (“before”)
The ESCO installs meters or data loggers and measures real electricity use of the
existing cooling equipment over an agreed period (e.g. 2–4 weeks), following a
Measurement Protocol provided by the Author. The ESCO sends raw data (time, kWh,
device/site ID) and an inventory of existing units to the Author.
Technology selection – decided by the Author
Based on the measurements and ΔE* logic, the Author determines which units should
be replaced and selects or approves the most suitable new technology. The ESCO does
not independently choose alternative equipment without written approval from the Author.
Implementation – ESCO buys and installs the approved equipment
The ESCO finances and installs the approved equipment and provides all necessary
technical documentation, while the client continues to work with the ESCO as their
local implementation partner.
New state – measuring after the upgrade (“after”)
After installation, the ESCO measures the electricity use of the new equipment over
a comparable period (again 2–4 weeks) using the same protocol and submits the data
to the Author.
ΔE* calculation and official report
The Author processes the “before” and “after” data with the proprietary ΔE* engine
and provides an official report with real savings in kWh, €, CO₂ and a ΔE* performance
indicator for each site or portfolio. The ESCO and client may use the Green AC&DC
Energy™ / ΔE* results and label, while the underlying formulas and algorithms remain
a trade secret of the Author.
Commercial conditions are agreed individually with each ESCO partner, typically combining a licence for the ΔE methodology with the ESCO’s existing performance-based or shared-savings models.
3. Why this model works for many ESCOs
For ESCO partners, Green AC&DC Energy™ offers a clear way to differentiate in the market: a standardised ΔE* savings indicator that banks and public authorities can understand, a replicable project template across many sites, and a narrative that links everyday electricity savings to EU-level climate and energy goals.- Standardised ΔE* indicator for banks, funds and public reporting.
- Replicable project template across many similar sites and clients.
- Clear “before/after” story that supports ESCO financing and shared-savings models.
Scalable
Any ESCO can join as a partner as long as it follows the same protocol and programme rules. This allows national and regional ESCOs to plug into a shared ΔE* framework without losing their identity or client base.Controlled & comparable
The Author keeps control over the methodology and technology selection, so the programme stays coherent and comparable across countries and sectors. Portfolio-level reporting becomes much easier for banks, funds and public authorities.Fair for ESCOs
ESCOs keep their client relationships and implementation business. Green AC&DC Energy™ provides the unique ΔE* logic, analytics and EU-level narrative that helps position ESCO projects as part of a larger transformation.Clear story for clients
Clients see transparent “before/after” data, savings in kWh, €, CO₂ and a simple ΔE* performance indicator. This builds trust and makes it easier to replicate the model across their entire portfolio.4. Example case – supermarket pilot
Illustrative example
A medium-size supermarket with open refrigerated cabinets and plug-in freezers decides to run a Green AC&DC Energy™ pilot together with an ESCO partner.
- Baseline (“before”): measured annual electricity use for commercial refrigeration of approx. 210,000 kWh/year.
- After upgrade (“after”): replacement of selected units and optimisation according to the ΔE* methodology reduces use to around 140,000 kWh/year.
- Real savings: approx. 70,000 kWh/year less electricity for refrigeration, which corresponds to about 33% reduction in this end-use.
- ΔE* result: the official ΔE* report shows the before/after data, the percentage savings and a single ΔE* performance indicator for this site – ready to be used in ESCO, client or bank reporting.
Ready to explore an ESCO partnership?
If you manage portfolios of hotels, supermarkets, residential buildings or public facilities, we can use one or two pilot sites to test the ΔE* framework and then scale it across your clients.For legal, intellectual property and authorship details of the Green AC&DC Energy™ / ΔE* framework, please see our License & Authorship page.