Is PopUp House a Net-Positive Energy building ?

energy positive house

 

Thanks to its exceptional insulation properties, your PopUp House can be easily transformed into a positive house that produces its own energy!

What is a positive building?

A positive-energy building is a building that produces more energy than it consumes on an annual basis, thanks to the use of renewable energy sources. A positive building should not be confused with an “off-the-grid” building. An “off-the-grid” building produces its own energy at all times, since it is cut-off from the traditional power grid, as its name implies. This setup requires the use of storage batteries and larger photovoltaic surface area. A positive building, however, remains attached to the power grid.

To learn more, check out the CSTB video “How to move towards positive energy?” (in French).

What are the different certifications?

The French BEPOS 2017 certification is awarded to energy-producing buildings that meet E+C- level 3 energy requirements (the Environmental Performance of New Buildings Trial Scheme, launched as part of the broader French Energy Transition for Green Growth Act).

In order to obtain the French BEPOS certification, the building must meet the following requirements:

  • Maximum bioclimatic energy needs (Bbiomax) -20% compared to RT2012
  • Maximum Primary energy consumption (Cepmax) -20% compared to RT2012
  • Air permeability of building (Q4Pa_surf) ≤ 0,4 m3/h/m²
  • Production of 20kwh/m²/year of Renewable Energy

* These conditions are applicable for residential buildings; they will be more demanding in the case of office buildings.

There is also a second certification, the BEPOS + certification, which corresponds to level 4 of the E + C- standard. It rewards exemplary buildings that produce more energy than they consume, going even further in their energy performance.

You do not have to certify your house as a positive energy house. However, some municipalities may offer you a grant or subsidies for having this certification.

How can I have a positive PopUp House?

Think of a bioclimatic design

A bioclimatic house is designed to fully utilize all of the natural advantages of its location:

  • Use the sun’s heat to your benefit by choosing the right orientation for the structure
  • Protect yourself from overheating
  • Keep the heat where it belongs (insulation and airtightness)
  • Reduce energy consumption needs: install a Dual-Flow CMV to recover heat

Take a look at our guide for  bioclimatic house.

Equip your house for energy production

You can install photovoltaic panels on the roof of your PopUp House: these panels convert solar radiation into electricity.

The required panel area will be defined according to your project: building area, energy needs, geographic location.

On average, for a BEPOS labeled building, 20m² of panels are needed (i.e. 10 panels). This corresponds to 3kWc of power. *

To meet the total needs of a family of 4, that is to say, produce as much energy as will be consumed in one year, it takes on average 60m ² of panels, or 35 panels.

* Calculated for a 130m² building

Select renewable-energy sources

Opt for equipment consistent with the positive house system:

  • solar or thermodynamic water heater
  • heat recovery ventilators for shower drains in order to recover heat from gray water
  • Sub-soil heat exchanger: recover thermal energy from the ground to heat or cool the structure

PopUp House’s thermal engineering team will accompany you throughout your project to help you:

  • Think about the design of your house in order to make it bioclimatic
  • Simulate your future energy consumption and determine the necessary equipment to guarantee both performance and profitability
  • Calculate according to your region the number of photovoltaic panels needed to cover most of your energy consumption
  • Provide you with the necessary positive house equipment (dual-flow CMV, solar panels)
  • Help you choose the right contract to connect to the EDF electricity network in France, so that you get the best return on your investment possible.
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