Photovoltaic installation with battery storage system

Photovoltaics 

Transform your available land into a source of energy production and sustainably reduce your reliance on the grid. Powesco designs, finances, and deploys photovoltaic installations tailored to your energy performance and decarbonization goals. 

Request a PV quote Our domains
  • -41% electricity bill
  • ROI 6–10 years
  • ESCO financing available

Request a photovoltaic quote

An expert will call you back within 48 hours — no obligation

  • Response within 48 business hours
  • No commitment
  • Confidential data

By submitting this form, you agree to our privacy policy.

01 84 19 86 88

⚠ Local energy production is becoming a strategic lever. Faced with rising electricity costs and decarbonization objectives, photovoltaics offer a sustainable way to reduce dependence on the grid while maximizing the value of available space in your real estate portfolio. 

OUR AREAS OF EXPERTISE

Building management systems, HVAC, LED relamping , photovoltaics, charging stations

WHAT IS THIS

Produceyour own energy and secure your costs in the long term 

In practice

  • Savings

    -41% on the electricity bill in self-consumption (observed result).

  • KING

    6 to 10 years for a well-sized installation with subsidies.

  • Funding

    ESCO funding, ADEME aid, CEE and regional schemes can be mobilized depending on your project.

  • Guarantee

    Manufacturer's warranty and performance monitoring throughout the entire operating period.

Photovoltaics is now one of the most effective levers for sustainably reducing the energy costs of a building while accelerating its decarbonization trajectory. 

However, the profitability of a project depends on many parameters: consumption profile, available surface area, connection capacity, self-consumption or resale strategy. 

Powesco takes charge of the entire project, from the feasibility study to production monitoring, with a performance-oriented and return-on-investment approach.

  • Feasibility study and complete site analysis
  • Multi-scenario sizing and financial simulation (20 years)
  • Handling administrative procedures (permits, connections)
  • Turnkey installation and connection
  • Real-time production monitoring via SEME NEXTEP

What the photovoltaic installation brings

  • –41%

    electricity bill for self-consumption

  • 6–10 years

    return on investment

  • 20 years

    linear production guarantee

  • 0€

    initial investment possible

What you get

A turnkey photovoltaic project in 5 steps 

From initial analysis to post-installation monitoring — Powesco manages everything.

  • Feasibility study and financial simulation over 20 years

    Site analysis (roof, shading, connection), hourly consumption profile, multi-scenario simulation (self-consumption, sale, storage). IRR, payback time, available subsidies.

  • Complete administrative file

    Prior declaration or building permit as applicable, ENEDIS connection request, OA purchase contract request if applicable. Powesco processes all applications — you approve.

  • Certified installation and connection

    Installation of panels, inverters, and protective equipment. Connection to the internal and public grid. Electrical compliance testing (Consuel). Qualipv certification or equivalent.

  • Optimized financing plan

    Identification and structuring of available aid: ADEME, CEE via Axioris, regional aid, EDF OA purchase obligation. Comprehensive financing plan integrating all sources.

  • Production monitoring and annual report

    Connect to SEME NEXTEP for real-time production monitoring. Dashboard accessible from your interface. Annual performance report with target/actual comparison.

Ahmed BOUCHRIHA

Ahmed Bouchriha

Head of Solar Design Office at Powesco

THE EXPERT'S WORD

The profitability of a solar project is determined before installation 

The performance of a photovoltaic system depends primarily on its sizing. A thorough study allows for optimizing self-consumption, anticipating grid connection constraints, and ensuring the long-term profitability of the project.

Our Solutions

Other areas of achievement 

GTB — Building Technical Management

GTB — Building Technical Management

Deployment and configuration of your BMS: automation, HVAC control, and drift detection. Compliance with the BACS Decree. Performance monitoring via NEXTEP.

Learn more
HVAC — Heating, Ventilation, Air Conditioning

HVAC — Heating, Ventilation, Air Conditioning

Replacement or modernization of your boilers, heat pumps, air handling units, and ventilation systems. Low-carbon solutions. Guaranteed service on occupied premises. Proven savings: 15 to 40%.

Learn more
Insulation

Insulation

Thermal assessment, definition of solutions and tailored work plan. Triple insulation, external thermal insulation and treatment of critical points. Available financial assistance.

Learn more
LED Relamping

LED Relamping

Photometric study, selection of suitable lighting fixtures, and installation without business interruption. 50 to 80% savings. Financial assistance available through Axioris.

Learn more
Charging stations

Electric vehicle charging stations

Load study, certified EV charging infrastructure installation, smart charging, monitoring and billing. Compatible with renewable energy sources. Deployment in 4 to 8 weeks.

Learn more

Our references

Concrete projects,
tailored to each context

Discover projects similar to yours, classified by sector and type of intervention.
See all our references
EQHO Tower — Paris La Défense
La Défense (92) • 40 floors
HVAC Energy Management GTB offices

EQHO Tower — Paris La Défense

Energy performance as a lever for profitability

Complete energy transformation of a 79,200 m² office tower with €5.8 million in financing over 5 years. Deployment of an advanced building management system and HVAC optimization to maximize performance without compromising comfort.

Challenges

Improve the energy performance of the tower while optimizing operating costs without impacting occupant comfort.

Work completed

• Deployment of an advanced building management system (BMS)
• Optimization of HVAC systems
• Comprehensive energy audit

Measured impact

-24 % energy savings / year
-32 % carbon emissions
Read the full case
Franklin Tower — Paris La Défense
Offices Energy Audit HVAC BMS

Franklin Tower — Paris La Défense

Measured impact

-37 % 5,950 MWh of energy savings per year
-32 % carbon saving
Read the full case
Mercure Courbevoie — La Défense Hotel
Hospitality GTB Relamping

Mercure Courbevoie — La Défense Hotel

Measured impact

-21 % energy savings / year
-29 % carbon emissions
Read the full case

Other projects in the sectors: health, hospitality, logistics, industry, local authorities.

See more projects

Frequently Asked Questions

Frequently Asked Questions

Do you have an energy efficiency project, questions about financing or regulatory obligations? Our experts are here to help.

Speak to an expert

It depends on the power output and the location. For installations ≤3 kWp, a prior declaration is generally sufficient. Above that size, it depends on the type of building and local planning regulations. Powesco handles all the necessary paperwork.

Do you have any questions? Contact our team

CONTACT US

Let's build your energy project together

Need help with your project?

Customer service available
Monday to Friday from 9am to 12pm

01 84 19 86 88
contact@powesco.fr

Head office

77, rue Marcel Dassault -
92100 Boulogne-Billancourt

« * » indicates the required fields

Your organization

Your contact details

By submitting this form, you agree to our privacy policy .