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Your business deserves reliable engineering
About us
We provide engineering and consulting services for renewable energy systems, focusing on solar photovoltaic solutions for the corporate segment, for individual or collective self-consumption, with or without storage batteries.
With over 10 years of accumulated experience in this sector, we develop and monitor projects across Brazil, spanning sectors such as industry, agriculture, commerce, and services.
Our approach combines specialization and technical rigor with the close proximity and customization that each client demands, ensuring complete control over all phases of the project—from feasibility studies to execution.

Commitment
At Sunsei Energy, we are committed to actively contributing to a responsible, results-oriented energy transition in the business sector. Our mission is based on four fundamental pillars.
Find out what we do
Portfólio
We highlight here some of the projects developed by Sunsei Energy
FERPINTA group
Oliveira de Azeméis, Portugal
Individual self-consumption UPAC on rooftop and parking lot.
Engineering project + Market consultation
Power: 3 UPACs 5,200 kWp
Ferral
Ovar, Portugal
Individual UPAC Rooftop Self-Consumption
Engineering Project + Market Consultation
Power: 100 kWp
Dimas e Silva
Santa Maria da Feira, Portugal
Individual Self-Consumption UPAC in coverage
Engineering design + Market consultation
Power: 80 kWp
UPAC with batteries
Covilhã, Portugal
Individual self-consumption UPAC on the ground, with batteries.
Engineering project
Power: 120 kWp + 256 kWh
UPAC Collective
Lisboa, Portugal
UPAC Collective Self-Consumption Rooftop
Engineering Project
Power: 5.100 kWp
UPPs
Portugal
Small Production Units
Engineering Project
Power: 17.700 kWp
Multi-site Commerce and Services
Portugal
Individual Rooftop Self-Consumption
Engineering Project
Power: 10 UPACs 1.100 kWp
Multi-site road concession
Portugal
Individual Rooftop Self-Consumption
Survey and standard engineering design
Power: 52 UPACs 480 kWp
Multi-site Germany
Several, Germany
Individual self-consumption on rooftops and soil.
Feasibility studies for production.
Power: 7 UPACs 11.600 kWp
Technical evaluation of PV projects and compliance with specifications for 3 UPACs, totaling 600 kWp
Portugal
Consulting
Technical evaluation of PV projects and compliance with specifications
Benchmark meteo data
Lisboa
Consulting
Comparative study of meteorological databases for photovoltaic production simulation
Self-consumption simulator
Caldas Rainha
Consulting
Development of a potential assessment simulator and proposal generator
*Note: Some of the projects are anonymized for confidentiality reasons.
Some of our clients
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