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Articles on solar energy, HVAC, energy efficiency, and everything you need to know to make the best decisions.
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DicasPainéis solares não funcionam só com sol direto e não danificam o telhado quando bem instalados. Respondemos aos mitos mais comuns sobre energia solar.
GuiasPortas e janelas fechadas no inverno pioram a qualidade do ar dentro de casa. Explicamos como a ventilação e a climatização certas ajudam a manter o ar saudável sem disparar a fatura da luz.
GuiasIsolamento, bomba de calor, produção solar e baterias: veja o que rever em casa antes do inverno chegar a sério, num checklist simples para seguir esta semana.
DicasPractical guide with the 6 steps of air conditioning maintenance before winter: filters, outdoor unit, heating mode test and when to call a technician.
GuiasA practical guide for those who manage a company or a condominium and want to equip the car park with electric chargers: types of charger, power, load management, available supports and how to connect everything to the building's solar production.
Fundos AmbientaisWhat weighs the most in the energy class of a house (windows, insulation, heat pump and solar), an anonymized real case and the supports available in Portugal in 2026.
GuiasWhat is aerothermal energy, how does an aerothermal heat pump work and when it pays to change the gas boiler or the electric water heater, with real cases of LEFE.
DicasThe solar monitoring app shows production in real time, warns of malfunctions and helps confirm that the system is fulfilling what was promised in the proposal.
GuiasPractical guide on air conditioning for offices, shops and other commercial spaces: differences between mono-split, multi-split and VRF, real prices charged by LEFE in 2026 and a real case of a clinic in Braga that reduced from 14 to 4 outdoor units.
DicasAre you back to your September routine? Discover 5 simple ways to make your home more efficient and save energy this autumn, with a real case and numbers from LEFE.
ClimatizaçãoMono-split, multi-split/VRF or HVAC heat pump: a practical guide to choosing the right air conditioning for offices, shops and industrial spaces, with a real case and concrete costs.
GuiasSolar batteries store excess photovoltaic energy generated during the day for use at night, increasing self-consumption and reducing dependence on the grid. Using a real-world example from LEFE (a 31.26 kWp system with a battery of approximately 27 kWh), we present concrete figures on self-consumption, grid independence, investment, and payback.
Casos reaisCharging your electric car at home with solar power can lower the cost per kilometer to nearly zero. Check out the numbers and see how much you save each year.
NotíciasOn August 12, an almost total solar eclipse reduced national photovoltaic production by about 45%, according to REN. The article explains what happened, why the grid did not feel the impact, and what this teaches about self-consumption and solar batteries, with a real case of a restaurant in Minho with a Sigenergy system.
GuiasFirewood, pellets, or a heat pump? Let’s see if it’s worth heating your home with biomass this winter, using real data from a LEFE system and a checklist to help you decide.
Fundos AmbientaisThe Environmental Fund is changing in 2026: new voucher for solar panels announced but yet to be opened, new eFundos platform and ongoing sectoral tenders. See what you can already prepare.
NoticiasIn July 2026, solar power was the largest source of electricity in Portugal for the first time (19%). Check out the data from REN and see what this means for your bill.
GuiasSolar thermal or a heat pump for hot water? We compare the two solutions using actual data from LEFE projects: costs, efficiency, and maintenance.
DicasAir conditioning on vacation: Find out whether it’s worth leaving it on, in eco mode, or turning it off, and save money without sacrificing comfort when you get home.
GuiasA Complete Guide to Fan Coils: What They Are, How They Work with a Heat Pump, Types (Wall-Mounted, Console, Cassette, Ducted), and When They Are a Better Option Than Air Conditioning.
GuiasEnergy communities: see how to share solar energy with neighbors, save on bills and what has changed with the new 2026 law in Portugal.
DicasPayback is the time until savings pay for the investment in solar panels. We explain what influences it and show, with the real case of Caparosa, how LEFE calculates it with official data, without brochure numbers.
NotíciasTwo new laws cut red tape, create new contracts, and make the energy transition accessible to families, businesses, municipalities, and local communities.
Fundos AmbientaisNow that several energy efficiency programs have ended or run out of funds, a concrete opportunity has emerged for the agricultural sector: 15 million euros in non-repayable grants, with up to 80% funding.
NotíciasWith energy costs continuing to rise and the growing need to reduce their carbon footprint, companies are under pressure to find more efficient and sustainable solutions. A PPA may be the answer.
Fundos AmbientaisThe landscape of energy efficiency support has changed significantly since last year. Some programs have ended. Others have been revamped. And there are new developments still on the way.
DicasDomestic hot water accounts for a significant portion of a home’s energy consumption. We compare the two most common DHW heat pump solutions and help you choose the one that’s right for you.
DicasA poorly chosen air conditioner does exactly what you don’t want: it uses too much energy, doesn’t cool very well, and is constantly noisy. Learn how to choose the right system based on objective technical criteria.
DicasMost home solar systems generate excess energy during the day but don’t make use of it. Batteries change that, but they aren’t always worth the immediate investment. Find out when they are.
DicasMost solar systems automatically shut down during a power outage. Learn how to protect your home with a suitable backup system.
DicasBetween technical specifications, system types, and installation issues, there are always many questions about heat pumps. We’ve compiled the most frequently asked questions from our customers, with clear answers and no technical jargon.
Fundos AmbientaisThe Environmental Fund has launched E-Lar, a program that succeeds the Edifícios + Sustentáveis initiative. It supports the replacement of gas-powered appliances with electric appliances rated Class A or higher, with vouchers of up to €1,683 per household.
DicasAfter installing solar panels, many customers ask: Can I sell the excess electricity I generate? The answer is yes, but there are some things you should know before making a decision.
DicasThe reduced 6% VAT rate on solar panels, heat pumps, and air conditioning ends on June 30. Find out why now is the right time to move forward with your energy efficiency project.
DicasChoosing the wrong capacity for an air conditioner compromises comfort and increases energy consumption. We explain what BTUs are and how to calculate them for each room in your home.
DicasSmall everyday mistakes can cause your HVAC system to use much more energy than it should. Discover the 5 most common mistakes and how to fix them to make your home more energy-efficient.
DicasIn 2024, solar power accounted for 10% of the national grid’s supply. But how do you know which system is right for your home? Solar power is only a good investment when the system is tailored to your needs.
DicasFan coil units are a versatile HVAC solution for homes and commercial spaces. We explain what they are, how they work, their pros and cons, and when you should choose this technology.
Fundos AmbientaisThe government has announced significant changes to energy efficiency support programs for 2025. Some programs have been discontinued, others have been revamped, and there are new measures for vulnerable families. Find out what has changed.
DicasWith the arrival of winter and the increased need for heating, many people are wondering which air conditioner is right for their home. Here are three models we recommend to our customers.
DicasWith the rise of electric vehicles, choosing the right home charger is essential. We explore the types of chargers available, the factors to consider, and the benefits of having a home charging solution.
DicasUnderfloor heating has been gaining popularity in Portugal due to its efficiency and comfort. But is it suitable for both new construction and renovations? We take a look at the different types, benefits, and installation considerations.
DicasCan't decide between a wall-mounted air conditioner and a portable one? We've compared the two options in terms of energy efficiency, cost, cooling capacity, and comfort to help you make the best decision.
DicasWhen was the last time you compared your energy provider’s rates with other options on the market? You might be paying more than you need to. Learn how to evaluate your options and, if necessary, switch providers.
DicasMore and more Portuguese people are choosing heat pumps for home heating. Find out how this technology combines energy efficiency with sustainability and can transform the comfort of your home.
DicasSolar batteries allow you to store excess energy from photovoltaic panels for later use. We’ve analyzed the pros, cons, and when the investment is truly worth it.
DicasWith energy prices rising worldwide, learning how to save has never been more important. Simple strategies and strategic investments can significantly reduce your electricity bill.
DicasAdopting sustainable practices brings immediate and tangible benefits to businesses. Solar energy is central to this green revolution, it reduces costs, enhances corporate image, and can be financed through community funds.
Fundos AmbientaisThe second phase of the Efficiency Voucher program continues to help Portuguese residents improve the energy efficiency of their homes. Vouchers of up to €1,300 are available, with each eligible recipient able to receive up to three vouchers.
Fundos AmbientaisThe government has made funding available covering between 30% and 80% of the costs for decarbonizing the industrial sector under the PRR. SMEs and large companies can apply for funding for renewable energy, energy efficiency, and low-carbon technologies.
Fundos AmbientaisThe Minister of the Environment announced that a new call for proposals under the Program to Support More Sustainable Buildings will be launched shortly, with additional funding from the Recovery and Resilience Plan.