The price of gas has nearly doubled over five years, prompting individuals and communities to seek alternatives for heating at lower costs. In the Grenoble area, heat pumps and district heating networks are being considered to significantly reduce dependence on gas. Bernard, a resident of the Grenoble area, is attached to his gas boiler installed in the garage of his house, which has been in service for 26 years without any issues. However, he must replace it. "The price of a kilowatt of gas has gone from 0.065 to 0.131 euros. The price has practically doubled in five years," he said, expressing regret. A new increase in gas prices is expected on Thursday, October 1st, with the price rising by 6.3%, partly due to the crisis in the Middle East. In this context, how can people heat their homes more cheaply this winter? What solutions are available to reduce dependence on fossil fuels? In the Grenoble area, individuals and communities are opting for other solutions. Bernard plans to switch from gas to electricity with a heat pump, which will be installed early October. The installation costs about 17,000 euros. "I will no longer have to pay the 1,600 euros for gas. My electricity bill was around 1,000 to 1,200 euros. I might be going up to 2,000. I don't know exactly because I can't tell how much we will consume. I hope there will be a difference compared to gas and that it won't be more expensive," he said. The installation is expensive, but various incentives encourage customers to proceed. "With the CEE grant and the 5.5% VAT, demand is growing exponentially. We started with about fifty installations per year, now we are at over 200 this year," observed Joris Potignon from the company MS38. "Like with electric cars, people are saying it's time to move away from fossil fuels and switch to electric." The government is launching a special social leasing program for heat pumps for the most vulnerable households starting on Thursday, October 1st. However, such equipment is not always feasible, especially in collective housing. Alternative solutions include district heating. In the Grenoble area, in Pont-de-Claix, Damien Pasty, the director of operations for the social landlord Alpes Isère Habitat, takes us to the attic of a 1950s residence. Three years ago, the six gas boilers were removed and replaced with pipes. "They come directly from the main heating plant. It heats all our buildings and seven municipal buildings," he explained. The heating plant is mainly powered by wood from the region. "If we had stayed on gas, we would be facing much higher costs today because the price of gas has increased, while the price of wood has remained stable," he noted. He explained that if a district heating network underground is within 150-200 meters of a building, it can be interesting for that building to connect. In the Grenoble metropolis, the equivalent of 100,000 homes are already connected to the district heating network, the second largest after Paris. The goal is to add 150 km of pipes to the existing 180 km. However, this will not completely replace gas, according to Gilles Moreau, the vice-president of the Grenoble metropolis. "Gas will remain in our energy mix," he said. "There are people in areas where it is difficult to connect to urban heating. We must also remember that gas is useful in the economic world. There are companies that need gas for manufacturing. We will always have a part of gas. But our ambition by 2050 is that it will be green gas from the agricultural world. It will allow us to still have access to a gas that is much more virtuous than biogas." Grenoble hopes to reduce the number of homes heated by gas from over 40% to only 9% by 2050.