From water circulation to the wellness experience — pool and spa areas are energy burners. Stromfee optimizes the complete chain and cuts up to 50% of energy cost. Proven on a real European reference site; presented anonymously.
Steps 1–5 are the pool & spa itself. Steps 6–10 are the building energy system that powers it — the full scope planned at the reference site.
24/7 pumps for hygiene and water quality.
Holding the water at 28–32°C — the single biggest cost driver.
Filtration, UV disinfection, chemical dosing.
Jets, massage nozzles, counter-current, waterfalls.
Finnish sauna, steam bath, infrared, ice fountain.
The same glass-box method for air, heat, power, PV and storage. Figures are the European reference; presented anonymously.
The pool-hall climate — ~30 °C air, ~55 % RH — with heat recovery. Dehumidification is the hidden energy driver of every pool hall.
Heat pumps are the main source for pools, ventilation and hot water. What matters is the real seasonal COP — not the datasheet best point.
The grid connection balances whatever PV and storage do not cover. The goal is near-zero grid draw in PV hours and no load peaks.
Rooftop and carport PV run as a controllable load — self-consumption is the lever, not export.
The second flexibility lever after the pool-as-heat-store — it pays off site-dependent, and we say so honestly. At the reference site the battery is planned, not yet installed — the pool and buffer are the thermal battery running today.
Three anonymized archetypes based on real European wellness hotels. Figures are the European reference; identities generalized.
The AI analyzes bather patterns → VFD control adapts pump speed automatically → 55% less pump electricity.
The AI forecasts heat demand from weather + bookings → the heat pump runs at low power prices → 60% less heating cost.
The AI detects guests in the wellness area → jets, steam and lighting active only on use → 45% less attraction cost.
The AI builds the optimal infusion plan → pre-heat time minimized, standby mode between → 40% less sauna energy.
The AI forecasts pH and chlorine demand 6h ahead → automatic dosing before opening → alerts on critical values. = 35% less chemistry, always optimal.
The AI computes humidity from the bather forecast → dehumidification starts BEFORE peak use → night heat recovery. = 50% less ventilation energy, no mold risk.
The AI watches pump vibration and motor temperatures → filter pressure differential shows cleaning need → planned instead of emergency service. = 70% fewer outages, longer life.
The AI forecasts chlorine, salt and chemistry demand → automatic reorder at threshold → towel & robe lookahead. = never empty, no over-ordering.
The AI schedules swim courses by bookings → optimal lane split (swimming/wellness) → aqua-fitness at low-price hours. = maximum use, minimum energy.
The AI computes pool cost for the coming week → weather + occupancy + power prices = exact forecast → budget warnings before overrun. = plannable cost, no surprises.
Whirlpools ready at 38°C by 16:00 for tired skiers.
Kneipp basins & foot baths active from 17:00.
Indoor pool to maximum, saunas heated earlier.
Outdoor-pool priority — cooling instead of heating.
Modes are examples; the AI adapts to the local climate zone — the method transfers, the setpoints follow the site.
What happens without intelligent control in a wellness hotel.
Pumps run 24/7 at 100% — even at 3 a.m. · no frequency control = on/off · oversized pumps (15 kW for 8 kW) · all pumps at once = load peaks. → 35% of pool energy wasted.
Pool constant 30°C — at night without guests · outdoor pool uncovered = 80% heat loss · electric heating in sunshine · flow heater instead of heat pump (COP 1 vs 5). → 40% of pool energy wasted on heating.
Whirlpool jets 24/7 — even without guests · sauna held at 90°C at night · steam bath runs permanently · ice fountain cools 24/7 for 2 uses/day. → the wellness area burns money without guests.
Understand → Live → AI (causal chains) → Value, per trade — the same method as our glass BESS, biogas plant and CHP.
See all 40 plant wizards → · Hotel Pool solution → · Pool markets →
Usually not: energy, meter and plant data are generally not personal data (GDPR Art. 4(1)) as long as they allow no inference about individuals. Personal reference arises only with video of people, visitor counting or guest/staff data — which we strictly separate from the energy system.
For pure energy/plant AI without personal reference, usually not (GDPR Art. 35) — a negative attestation is documented. For video or visitor analysis of public areas, a DPIA is usually required.
An AI on site keeps the operating data inside the building: this supports data protection by design (Art. 25), security (Art. 32) and greatly reduces third-country transfers (Art. 44 ff.). The operator always remains the controller.
Circulation-pump, filter, pool and hot-water/sauna readings — pure operating data. The control shifts flexible loads into favourable PV/price windows without needing any personal data.
Stromfee licenses the pool & wellness HVAC AI — proven in Europe, deployed on your existing plant. Single property, portfolio or chain.
Request software license →