premise: electrical energy is a kind of energy sent2: a home is a kind of building sent3: energy is used for heating a building by a heating system sent4: a solar panel converts sunlight / solar energy into electrical energy / electricity sent5: solar energy is a renewable / inexhaustible resource sent6: a solar panel is a kind of object sent7: if an object converts something into something else, then that object uses that something to produce that something else.
hypothesis: solar panels use a renewable resource to produce energy which is used for heating a home