PVPC vs fixed rate: power capacity is the deciding factor

PVPC or free market: the trap lies in power capacity

A mother on the free market who doesn't check offers, doesn't compare prices, and wants everything done for her. Her son suggests switching to the PVPC, but antiestéticars regulated prices will spike and doesn't want to do the math for her. This is the portrait of a decision affecting millions of Spanish households. According to the numbers in circulation, the choice isn't decided by energy prices but by a line few notice: power capacity.

The PVPC functions like a roller coaster. There are days with hours at just over 7 cents per kWh and others nearing 40 cents. Those who concentrate laundry, oven, iron, and water heater in off-peak hours save; those who can't organize themselves pay the peak rate. The free market alternative is a flat-rate fixed price, offering the comfort of not watching the clock, but with a hidden cost in the fine print.

The calculation debunking the bait price

Free market offers are advertised with a lure: 0.099 euros per kWh 24/7. It sounds unbeatable against a fluctuating PVPC. The problem arises when comparing power capacity, that fixed concept paid for contracted capacity regardless of consumption.

In a typical fixed tariff like Visalia, power costs 0.142579 euros per kW per day, excluding taxes. In PVPC, it hovers around 0.070 euros, half that amount. For a home with 4 kW contracted, the difference exceeds 10 euros per month on that concept alone. With low consumption, energy savings don't offset the fixed surcharge.

The conclusion among those crunching numbers is clear: for a low consumption profile, concentrated in off-peak hours, and without electric heating or air conditioning, PVPC remains the cheapest option. The complete calculation, broken down item by item, reveals differences surprising to those only looking at the kWh price.

The 2021 reform that changed the rules

PVPC is no longer what it was. Since June 1, 2021, the regulated price stopped being set by hourly pool prices and linked to futures prices. The reform was sold as a way to stabilize the tariff, but in practice, it acted as a hidden floor: even if the pool dropped to zero, PVPC didn't fall below a certain threshold.

The effect is that that valley at 0.05 euros per kWh is history. It now averages around 0.08-0.09 euros, and peaks skyrocket. PVPC's advantage has been reduced by half or less. A realistic calculation places monthly savings at about 10 euros for those who organize consumption well, just enough to pay for fiber connection.

That same day, access tariffs were modified, with increases and decreases by time periods no one fully explained. The distribution of these tariffs, which don't go entirely to electricity companies, has become an impossible-to-trinc administrative labyrinth.

Social bonus, the real floor of the bill

For households accessing the social bonus, the equation changes completely. With the maximum discount of 57.5% for extreme vulnerability and consumption around 100 kWh, the final price stays at about 0.12 euros per kWh, including taxes. This is the market floor.

Obtaining it isn't simple: it requires meeting extreme vulnerability criteria, a process not within everyone's reach. The average price rises if consumption increases, because fixed costs dilute less. Cases of bills of 5 to 7 euros monthly belonged to the era of the 80% discount; now those same households pay between 10 and 12 euros.

The free market isn't a scam, but neither is it a gift

Direct experience of two years with a fixed-price retailer without hidden charges proves there are operators who comply. The sensible strategy isn't to find the definitive company, but to contract the cheapest today, without commitment, and be willing to switch when it stops being so. The problem is information asymmetry: most don't know how to read a bill, let alone compare two offers with different structures.

The closing figure is startling: those consuming 170 kWh per month have never paid more than 50-60 euros monthly, whether in free or regulated markets. With those margins, the PVPC vs fixed rate battle is fought on terrain many never step onto.