Project
Lundeby
Lundebyveien 5 has an annual electricity consumption of around 1.8 GWh, in addition to gas use for heating equivalent to about 400,000 kWh per year. With nearly 17,700 square metres of available roof area and good grid capacity, the conditions are well suited to using local energy production.
Building upgrades reduce heat loss
The project is not only about energy production.
To achieve maximum effect and qualify for the highest possible support from Enova, extensive upgrades of the building stock are also planned:
- Additional insulation and a new roof membrane on flat roofs
- Upgrading of older pitched roofs with new insulation
- Replacement of façade elements and windows
- Preparation for a transition from gas to biopropane
The calculations show that these measures alone can reduce the energy need for heating by more than 400,000 kWh per year.
Large energy savings
Overall the project is expected to reduce annual energy consumption significantly.
The calculations show:
- More than 400,000 kWh saved through building improvements
- About 827,500 kWh saved through the solar and battery solution
- A significant reduction in energy costs
- Improved energy rating from E to B
At the same time the building will be better prepared for future energy prices and stricter requirements for energy efficiency.
Solar power and batteries give maximum utilisation
The core of the project is a large bifacial solar plant combined with a battery system of up to 2 MW / 4 MWh.
The solar plant is calculated to produce more than 1.5 million kWh of renewable energy annually. Together with battery storage this makes it possible to:
- Increase self-consumption of produced energy
- Reduce the load on the electricity grid
- Use the energy when electricity prices are highest
- Participate in the frequency market and create new revenue streams
With Enfy’s energy management system (EMS), energy flow is automatically optimised between the building, the battery and the grid.
An investment that finances itself
The combined annual savings and revenues from the energy system are estimated at nearly NOK 3.9 million.
By combining the energy system with the building upgrades, the project can qualify for up to 30 percent support from Enova, equivalent to around NOK 10 million.
This gives a project with positive cash flow and a calculated payback time of about 3.5 years for the total investment package.
