Portugal has cut greenhouse gas emissions by 43 percent since 2005, a feat the International Energy Agency credits almost entirely to a rapid build-out of solar, wind, and hydropower. But in a candid policy review released in Lisbon this week, the IEA warns that the country's next climate targets are at risk—not because clean energy is scarce, but because outdated grid rules, a shrinking gas system, and a pile of junk charges on electricity bills are making it too expensive to switch from fossil fuels.
The numbers from the power sector are genuinely impressive. Solar PV, hydropower, and wind have pushed Portugal's carbon intensity for electricity generation to one of the lowest levels among all IEA member countries. The clean-up has delivered an economic shield, too.
While German and Italian wholesale power prices have periodically blown past €150 per megawatt-hour, Iberian prices have held around €60 to €70/MWh, Oilprice.com reported. TotalEnergies recently recycled €178.5 million from its Portuguese renewables portfolio while keeping operational control. EDP's hybrid wind-solar capacity is nearing 700 megawatts across five major projects.
The problem is everything else. Transport, buildings, and industry together account for 82 percent of Portugal's remaining energy-related greenhouse gas emissions. Oil still covers 92 percent of transport's energy consumption.
The vehicle fleet is old. The IEA describes the country as entering a "mid-transition"—a phase where the electricity system and the fossil fuel system are moving in opposite directions simultaneously, and the coordination between them is getting complicated. "Portugal has built a strong foundation through rapid progress in renewable electricity," IEA Deputy Executive Director Mary Burce Warlick said at the launch in Lisbon. "As emissions reductions increasingly depend on electrification across the economy, electricity becomes central to both energy security and economic development."
That electrification push is hitting a wall, and the wall is your electricity bill. The IEA's pricing section is one of the report's more pointed findings. Electricity in Portugal currently costs more than gas on a final energy basis, not because clean power is expensive to generate, but because the bills are loaded with non-energy charges.
Legacy subsidies. Efficiency levies. The social tariff financing.
Tariff convergence costs for the Azores and Madeira. The audiovisual fee. They all land on the electricity bill.
For a family or a small business deciding whether to swap a gas boiler for a heat pump or an induction cooker, the economic case is weaker than it should be. That slows the entire transition. The IEA wants those policy costs moved to the state budget with multi-year commitments.
Distortionary charges should be removed. The regulated tariff should be phased out entirely. The social tariff, which helps low-income households, needs restructuring to be consumption-based and state-funded rather than embedded in everyone's bill.
Energy poverty in Portugal runs well above the European average. Tariff discounts alone do not solve it. The IEA wants those households given real access to building renovations, efficient appliances, and clean transport options.
The gas network is shrinking faster than anyone planned for. Portugal's natural gas demand has already dropped to levels its grid operator did not expect to see until the mid-2030s. Combined-cycle gas turbines are being pushed out by solar and wind.
That is good news for emissions. Throughput is falling. Fixed costs are not.
The customer base left holding those costs is shrinking. Without updated remuneration frameworks for gas network operators and clear decommissioning planning, the IEA warns, Portugal risks stranded assets and tariff shocks as the system contracts faster than it was designed to. Gas workers and companies have technical skills that could be redeployed into electrification and building renovation.
The report calls for that transition to be planned, not left to chance. The grid itself is straining under the solar boom. Distributed solar PV barely existed in Portugal a decade ago.
By early 2026, it hit 3.1 gigawatts and was still growing fast. Connection timelines are slipping. Constraints on both the transmission and distribution networks are visible.
The IEA warns that without more proactive planning, Portugal risks slower renewable deployment, rising curtailment, and delayed electrification. This matters more in the context of last year's Iberian blackout, which left tens of millions across Spain and Portugal without power. The eventual investigation found that outdated grid rules and poor voltage control were to blame, not renewable energy itself.
But the episode exposed exactly the kind of coordination failures between transmission and distribution operators that the IEA is now pressing Portugal to fix. The agency wants a scenario-based flexibility roadmap covering storage, frequency response, and system flexibility needs out to 2050, alongside market-based, technology-neutral procurement for ancillary services. Where those competitive markets have been introduced elsewhere—Australia and Germany—battery participation has pushed costs down sharply.
Transport is the country's biggest remaining emissions problem, accounting for 54 percent of energy-related greenhouse gases. Electric vehicles hit 38 percent of new car registrations in 2025, above the EU average. The headline looks good.
But EVs are only 6 percent of the total fleet. Roughly 80 percent of vehicle purchases in Portugal are used cars, and there is essentially no policy support for buying a used EV. The IEA recommends fixing that, targeting subsidies at low-income households and professional drivers rather than stacking more incentives on top of new car buyers.
Urban charging infrastructure, especially for people who park on the street, is flagged as a gap. The report also pushes hard on modal shift—moving people from private cars to public transport, cycling, and rail, and moving freight from diesel trucks to Portugal's already highly electrified rail network. That structural demand reduction matters more than technology substitution within the car fleet, the IEA argues, because it lowers energy demand rather than just switching its source.
Buildings and industry have barely moved. Building renovation rates are low. Support programmes are fragmented, administratively heavy, and mostly focused on single measures rather than deep retrofits.
The IEA calls for proper one-stop shops that manage the entire process from assessment to delivery, backed by a white certificate programme to attract private capital, citing Italy and Poland as examples where this has worked at scale. Industrial emissions have been essentially flat for more than a decade. The sector faces two transitions at once: cutting emissions quickly enough to meet 2030 targets while repositioning competitively in global supply chains shifting toward low-carbon production.
Portugal's low-carbon electricity is an asset here that is not being used. Green hydrogen ambitions aside, the IEA sees heat pump manufacturing as one concrete near-term opportunity. Bosch's recent investment in domestic production is cited as the kind of supply chain anchor that follows when policy signals are stable.
Portugal has a 2030 target of cutting greenhouse gas emissions 55 percent from 2005 levels, with climate neutrality by 2045. The power sector has pulled its weight and then some. The question now is whether the rest of the economy can do the same, on a much tighter timeline and without the relatively straightforward lever of replacing coal and gas generation with wind and solar.
Why It Matters: The IEA review exposes a paradox at the heart of Portugal's energy transition. Clean electricity is abundant and cheap to produce, but the way it is priced makes it more expensive for a family to run a heat pump than a gas boiler. That pricing distortion, combined with a gas network whose costs are rising as its users flee, creates a trap: the faster Portugal decarbonizes its power grid, the more expensive the remaining fossil fuel infrastructure becomes for everyone still stuck on it.
Breaking that cycle requires political decisions about who pays for the transition—and right now, working households are carrying a disproportionate share through their electricity bills. - Electricity bills are loaded with non-energy charges that make clean power more expensive than gas for end users, slowing the switch to heat pumps and electric vehicles. - The grid cannot keep up with the solar boom, and last year's Iberian blackout exposed coordination failures the IEA says must be fixed urgently. The IEA's 10 recommendations are coherent and specific. Coordinating them across transport, grid planning, buildings, industry, and social policy is the hard part.
Portugal has shown it can move fast when the political will is there—the power sector proves it. The transition's second half is where that gets tested. Watch for whether the government moves policy costs off electricity bills in the next budget cycle, and whether grid operators publish the flexibility roadmap the IEA is demanding.
Those two signals will tell you whether the clean-energy story in Portugal is about to stall or accelerate.
Key Takeaways
— - Portugal's power sector drove a 43% emissions cut since 2005, but transport, buildings, and industry account for 82% of remaining emissions and have barely improved.
— - Electricity bills are loaded with non-energy charges that make clean power more expensive than gas for end users, slowing the switch to heat pumps and electric vehicles.
— - The gas network is shrinking faster than planned, creating a risk of stranded assets and tariff shocks as fixed costs are spread across a shrinking customer base.
— - The grid cannot keep up with the solar boom, and last year's Iberian blackout exposed coordination failures the IEA says must be fixed urgently.
Source: OilPrice.com
