How ESaaS runs
Three stages, in this order
The agreement does not switch everything on at once. Each stage has its own job, its own start condition and its own settlement rhythm — and each one is only entered when the one before it is running properly.
1
Stage 1 — behind your meter
From the commercial operation date. The battery charges in the low-tariff block and discharges into your own consumption in the high-tariff block, cutting billed peak power, smoothing the load profile and reducing grid fees where they apply. The benefit is the difference between what you actually pay and what you would have paid without the system, measured against a reference cost agreed in Annex 1 from your bills, metering and EMS data.
Settled monthlyFrom the first month of operation
2
Stage 2 — on the market
Typically one to three months later, once the EMS has collected enough data from your site — indicative timing, not a binding date. Day-ahead arbitrage on the power exchange of your market (CROPEX in Croatia), frequency regulation, aggregation and virtual-power-plant participation, and the EMS combining them against dynamic prices. Never at the expense of your critical loads or your security of supply, and only once the permits and operator agreements each activity needs are in place.
Settled annuallyIndicative timing, not a deadline
3
Stage 3 — integrated supply
From January 2027 at the earliest, and only under a separate supply, PPA or dynamic-pricing agreement: we supply the electricity and issue one integrated invoice, set 10 % below the reference bill it replaces. From that point the sharing mechanism no longer applies to the energy we supply — the discount is your benefit.
One invoiceSubject to a separate supply agreement
“Net” is the word that matters. The benefit is everything the system produces — bill savings, billed-peak reduction, arbitrage, market, aggregation and ancillary revenue — less the direct, documented costs of producing it, which the agreement names in advance instead of discovering them later. What is left is what gets shared. The percentage is set per project and written into Annex 1 with the calculation method and any thresholds. Revenue earned through a third party — an aggregator, a supplier, an exchange, a system operator — counts only to the extent it is directly attributable to your system and actually collected. In a period with no net benefit there is nothing to share and nothing to pay.
