

ewz.solarsplit optimises the self-consumption rate of your property. This increases the earnings from your solar panels and pays for them more quickly.
Usually, the residents of your property benefit from lower electricity costs, because locally produced solar power is cheaper than electricity from the public grid.
Electricity is billed according to consumption and fairly between participating consumers.
ewz.solarsplit is a simple, transparent billing solution for selling your solar power in a building. This increases your self-consumption and optimises your earnings. At the same time, you enable your residents or tenants to purchase solar power – locally produced on their own roof.
This electricity is not only sustainable, but usually also cheaper than electricity from the public grid. Solar power is allocated to the participating tenants dynamically and in real time – without any effort for the administration or the households.
ewz.solarsplit is the right solution if all of the conditions below are met.
Self-consumption means that solar power is consumed directly on site. Instead of feeding it into the grid, installation owners can sell the solar power locally and profitably.
Self-consumption pays off for everyone: for consumers, electricity from their own roof is generally cheaper than electricity from the grid, because grid usage costs and levies are eliminated. For installation owners, the solar panels are amortised more quickly and are more profitable.
You decide the price of your solar power: either you set the price yourself or choose automatic annual price adjustment by us.
You inform the tenants or residents of the building and ask them whether they would like to take part in ewz.solarsplit.
After ewz.solarsplit has been introduced, we will support you and your participants until all questions have been answered.
The participating tenants will continue to receive their electricity bills from us. In addition to the electricity they draw from the grid, we will also bill them for solar power.
As the installation owner, you get a quarterly credit from us for the solar power you’ve sold to participating tenants, and for the electricity you’ve fed back into the grid.
We will pay your income, minus a service fee, directly to you.
As an electricity provider, we have many years of experience in implementing and operating solutions that ensure an efficient power supply. With innovative services such as the billing solution ewz.solarsplit, we promote optimised electricity consumption and thus a sustainable use of electricity as a resource.
We have already successfully set up around 800 self-consumption communities with over 24,000 metering points. Installation owners were able to increase the self-consumption of their solar panels by 70% on average. Benefit from our expertise and sell your electricity to the tenants in your property with us.
The ewz.solarsplit billing service requires the energy consumption of tenants or apartment owners supplied with solar power to be measured with smart meters. Smart meters require a connection to the telecommunications network. The distribution network operator is responsible for equipping the consumption points with smart meters and connecting them to the telecommunications network. It selects the telecommunications connection based on technical and economic criteria.
In the past, ewz has required the connection of smart meters to the FTTH network for billing services in its contracts. This contractual clause led to misunderstandings among customers. Customers assumed that ewz would only allow a FTTH connection for the ewz.solarsplit service. This is incorrect and the contracts have since been adjusted. As a provider of services in the market, ewz cannot stipulate the telecommunications connection of smart meters. This is the sole responsibility of the distribution network operators; in the case of the distribution network in the city of Zurich, the Grids division of ewz.
We can only offer ewz.solarsplit in our own distribution grid. It is a distribution network operator (DNO) model. If your property is located outside the ewz supply area (the city of Zurich and the ewz Distribution Grid of the Grisons), you can set up a self-consumption association (ZEV) or a virtual ZEV.
Unlike a ZEV or a virtual ZEV, residents continue to receive their electricity bill directly from us. It clearly shows the details of the selected electricity product for drawing electricity from the grid and the in-house solar power. Thanks to smart meter technology, solar power is allocated precisely and according to consumption. Participation in ewz.solarsplit is voluntary for all participants and withdrawal is possible at a later date.
Yes, for example, with ewz.solarquartier, you can sell the solar power that you feed into the grid today to your neighbourhood directly and profitably, securing higher revenues in the long term and getting the most out of your solar roof . Learn more about ewz.solarquartier and become part of a local electricity community.
Yes.
As the installation owner, you receive a quarterly credit from us. It is based on the solar power you sell to the participating tenants and the electricity you feed back into the grid. A service fee will be deducted from your income.
We calculate the price per kWh of the cheapest electricity product in the basic supply. The price includes the energy price, grid usage and levies.
This calculation applies to peak and off-peak tariffs for private customers (NNA grid tariff). The calculated price is rounded down to 0.5 centimes. Customers with the NNB grid tariff pay two centimes less per kWh.
As the installation owner, you receive the same remuneration per kWh regardless of the participating tenants’ grid tariff.
The NNA grid tariff applies to customers covered by basic supply up to an annual consumption of 60,000 kWh, whereas the NNB grid tariff applies for higher consumption. The prices of these two types of consumption are different.
No problem – if the solar panels don’t produce enough electricity, households automatically draw electricity from the grid. They won’t notice anything, and supply is assured at all times.
In the event of a power outage, the same security of supply applies as for all other customers in the ewz grid area. In this case, the solar panels do not supply electricity, as they are disconnected from the grid for safety reasons. This does not apply to solar panels that are capable of going off-grid.
No. We will install the necessary measuring devices, which are called smart meters (digital electricity meters), if they have not yet been installed. Participating households (e.g. tenants) do not require any additional equipment or software.
The owners of the solar panels are responsible for operation and maintenance. At ewz, we take care of the measurement infrastructure.


