Factory rooftops · Viseu District · Portugal
Factory rooftop solar in Mangualde: 150,000 kWh a year on 100 kWp
A 100 kWp array on a factory roof in Mangualde generates about 150,000 kWh a year at the local specific yield of 1,500 kWh/kWp. Factories are a better solar match than most commercial buildings because process loads, compressed air and HVAC run through the same daylight hours the array is producing.
With roughly 70% self-consumed against €0.20/kWh, that output is worth about €21,000 a year and pays back in around 4.3 years on an installed cost near €90,000. Strong local irradiance plus daytime process load is why factory rooftops in Mangualde are usually faster to close than speculative warehouse pitches.
Industrial estates around Mangualde sit in the same Viseu District band as Viseu and Lamego. What changes site to site is roof area, shading from plant rooms, and whether the factory runs a true day shift. SolarScout flags those roofs from satellite and OpenStreetMap rather than from a bought list.
Turn these rooftops into a lead list in minutes.
Scan this area free →Why factory roofs in Mangualde self-consume more than warehouses
A quiet distribution shed may export a large share of midday generation. A factory in Mangualde typically does not: motors, ovens, plating lines or refrigeration pull power while the sun is up, so a higher share of the 150,000 kWh stays behind the meter and the 4.3-year payback holds.
That is the conversation to open with — not "solar is green", but "this roof in Mangualde offsets about €21,000 a year at today's tariff of €0.20/kWh".
What to inspect on a Mangualde factory roof
Look for large, low-pitch structural roofs with few roof lights, limited HVAC clutter, and a south or east-west run that matches Viseu District's 1,500 kWh/kWp resource. North-light sheds and heavily plant-loaded roofs still work, but usable kWp drops and payback stretches past the 4.3-year city example.
SolarScout estimates footprint first, then (where Google Solar data exists) modelled annual kWh, so you can skip the roofs that will never carry a 100 kWp array and spend time on the ones that will.
How to turn Mangualde factory roofs into a lead list
Scan Mangualde in SolarScout and filter for factories. Each row carries an estimated roof area, a worked saving at €0.20/kWh, and contact fields where map data provides them. Export CSV or Excel and drop the list into your CRM.
When Mangualde is thin, run the same scan on Viseu and Lamego — they share the Viseu District yield, so the economics stay comparable and you are not mixing a sunny coast with a cloudy hinterland.
Frequently asked questions
How much can a factory rooftop in Mangualde generate?
About 150,000 kWh a year on a 100 kWp array. That is 100 kWp multiplied by Mangualde's specific yield of 1,500 kWh/kWp; larger roofs scale linearly until structure, shading or grid export caps the design.
What payback does factory rooftop solar see in Mangualde?
Around 4.3 years when most of the generation is used on site. Factories usually beat empty warehouses on that score because daytime process load matches the solar curve.
How does SolarScout find factory rooftops in Mangualde?
It combines OpenStreetMap industrial building tags with satellite imagery and, where available, Google Solar modelling — then exports Mangualde factories as leads with roof area and a €21,000/year worked example on 100 kWp.