PropSaver: energy optimisation for housing associations and property owners
Energy optimisation: lower cost for heating and electricity, in one system.
PropSaver controls the heating plant from measured indoor temperature instead of from an outdoor sensor and a heating curve, and at the same time steers the property's energy assets together so the peaks are cut and the combined cost of electricity and district heating stays down. All within the comfort limits you set.
Heating optimisation: controlled by how warm it actually is indoors.
Most heating systems are controlled by an outdoor sensor and a heating curve, a blunt model that lags behind and misses sun and wind. The heating optimisation in PropSaver bases the control on the measured indoor temperature instead, so the building never gets more heat than it needs.
Energy for heating over a week
Illustration. Without PropSaver the heat only follows the outdoor temperature and misses sun and wind. PropSaver controls on the measured indoor temperature: easing off when the free heat gain is enough, raising the heat when it gets too cold. Net lower energy, more even comfort.
Overheating is pure waste.
When the heat is controlled from the actual indoor temperature, the swings above the target disappear and the energy used for heating falls. We follow up the result with degree-day correction, so the saving is compared fairly from year to year.
Heating is getting more expensive, whatever the source.
Heat is one of the property's largest and fastest-growing operating costs. Every percent saved counts, and the way costs are moving makes the saving worth more every year.
District heating price index · Sweden (2020 = 100)
Price index based on the annual price increases in the Nils Holgersson report. Illustration.
Peak optimisation: electricity and district heating in the same calculation.
The same system also optimises when the energy is used. Every fifteen minutes PropSaver compares the prices, picks the cheapest route to the same comfort and evens out the draw so the expensive peaks on both networks never need to occur. As one of Sweden's three largest submetering companies, we have the metering and the whole-property view it takes to optimise electricity and district heating together.
When you use energy matters as much as how much you use.
Capacity tariffs, a capacity component in district heating and volatile spot prices mean that the timing of consumption determines an ever larger share of the cost. PropSaver moves the draw to the hours when it costs least.
See what the whole property could save
The calculator covers the property's whole energy system. Add more parts and see how much more you could save together.
How the energy optimisation works, step by step.
You set the limits, for example the lowest indoor temperature and when the cars need to be charged. Within them, PropSaver does the rest, around the clock.
Measurement and connection
Wireless OY1110 sensors measure the temperature in the apartments, and the PropEdge controller connects the heating plant and the other assets to the Propeye platform, whatever their age.
The model is calibrated to your property
The EMS engine simulates the building and is calibrated against your actual consumption, not against assumptions.
Optimal operation is recalculated every 15 minutes
The engine weighs together indoor temperature, weather, prices, capacity tariffs and the efficiency of the systems.
Control around the clock
How much heat to deliver, what to store, charge or discharge, and when. PropEdge has local fallback if the connection drops.
Integrates with Sweden's major financial property managers
PropSaver controls the property as a whole.
We see your property as one connected energy system: heat, electricity and water, but also solar panels, batteries, heat pumps and EV charging. PropSaver is the layer that gets the parts working towards the same goal.
When everything is controlled together we can cut the peak demand and lower the cost for the whole property, not one piece at a time.
Meter one part, save a little. Control the whole property, save much more.
Peak demand over 24 hours
Frequently asked questions
Will it work with our old heating plant?
Yes. PropSaver connects to any heating plant, whatever its age, with no rebuilding work.
What happens if the internet or the platform goes down?
PropSaver has local fallback. The heating plant keeps working locally, so the building is never left without control.
Will it get cold or draughty when the system turns the heat down?
The opposite. You set a setpoint, the temperature you want to hold, and PropSaver works from the measured indoor temperature to stay there. Comfort becomes steadier, not worse.
Do the residents notice the optimisation?
No. You set the limits, for example the lowest indoor temperature or that every car should be charged by morning. Within those limits PropSaver makes thousands of small adjustments that nobody feels.
We have no solar panels, battery or heat pump. Is this still for us?
Yes. The heating control and the peak-cutting with the building's own thermal mass work in every property. More controllable assets give more to optimise, but they are not a requirement.
How reliable is the savings figure?
The 10–25 percent range covers the combined cost of electricity and district heating and is always property-specific: we run the numbers on your specific property before we promise anything. The heating part's saving is also followed up with degree-day correction.
An established partner for your property.
Nordic Propeye has measured and lowered costs in Swedish properties since 2001, with roots in Home Solutions.
Do you want to lower your property's energy cost?
Get in touch and we will analyse what energy optimisation could give in your specific property, free of charge and without obligation. The heating saving is followed up with degree-day corrected measurement.