The majority of the energy used by Caruna consists of the transmission and transformer losses of the electricity network. The distribution of electricity always involves some loss, and the electricity distribution company is responsible for it. We strive to enhance the energy-efficiency of our networks and to reduce losses. Since the autumn of 2015, all new distribution transformers used by Caruna are low-loss ECO transformers compliant with the updated EU Directive.

We use CO2-free (zero carbon dioxide emissions) electricity to compensate for grid losses. In 2016, we purchased 389.3 GWh of electricity to compensate for the loss of electricity.

In addition, the standby power plants in our network area require small amounts of fuel. Our contractors acquire the fuel needed.

Own consumption of energy

Caruna’s own consumption of energy mainly consists of the electricity and heat energy used in our office buildings.

Caruna’s own consumption of energy mainly consists of the electricity and heat energy used in our office buildings. The majority of our own energy consumption takes place at our premises on Upseerinkatu in Espoo where we moved in September 2015. In 2016, we consumed 2.21 GWh of electricity and 1.82 GWh of heat energy.

The majority (nearly 75%) of the energy is used for cooling down the servers and the substation control room, as well as for cooling, heating and ventilating the rest of the building. Other significant energy consumption functions are water heating and lighting, for instance. The energy consumption of the restaurant operating in the building has not been taken into account in Caruna’s energy consumption.

In the Upseerinkatu offices, we use ground heat as well as district heating for operating the air conditioning.

Own energy production

Caruna has two production sites for solar power.

Caruna has two production sites for solar power whose main purpose is to collect first-hand experience of decentralised energy production.

At the end of 2015, we had 110 solar panels installed on the roof of our offices on Upseerinkatu. The nominal output of these solar panels is roughly 29 kWp. In 2016, their total energy production was over 14 MWh, which we utilised on the premises.

In addition, there are 119 solar panels on the roof of our primary substation in Keilaniemi, Espoo. In 2016, their total energy production was over 24 MWh. We used about 10 MWh of this at the substation and transferred the rest to our distribution network to compensate for network losses.

Energy Efficiency Agreement

Energy efficiency is a key part of Caruna’s environmental responsibilities and customer cooperation. We have been involved in the National Energy Efficiency Agreement and the Energy Conservation Agreement preceding it since the beginning of the agreement system in 1997. The previous agreement term closed at the end of 2016, and Caruna also acceded to the contract of the new agreement season 2017–2025.

Our extensive network improvement programme reduces network losses.

We are committed to taking energy efficiency into account in all our internal operations and to make our own energy consumption more effective, especially when it comes to grid losses. Our extensive network improvement programme reduces network losses. We take losses into account and reduce them also through careful network planning, our choice of components and the optimisation of the basic connection state.

In addition, we are committed to improving our customers’ awareness of their own energy use and the potential for making it more efficient. We offer them, for example, an energy reporting service, energy efficiency counselling and guidance in adopting their own energy production.