Episode 2 · Water heating · Solar electric · Utility rates

The Water Heater Dragon

The water heater looked harmless in the corner of the garage. Then the utility bill arrived, smoke curled under the door, and Solar Sensei said, “Heating water is not the same problem as moving water.”

Opening scene

The homeowner hears rumbling from the garage.

The house is quiet. The pool pump is resting. The pressure tank is reading a magazine. The battery is sipping electrons politely.

Then a deep rumble shakes the garage.

The homeowner opens the door and sees the water heater glowing like a sleeping dragon.

“I thought you were just a tank,” says the homeowner.

The water heater opens one golden eye.

“I am a tank,” it says. “A tank full of hot-water expectations.”

Manga-style water heater dragon in a garage with Solar Sensei holding a load schedule

Panel 1

The dragon wakes when the bill arrives.

The homeowner thought hot water was just comfort. The utility bill reveals that comfort has a tail, claws, and a recovery cycle.

The Homeowner

“I only wanted hot showers. Why is the bill breathing fire?”

The Water Heater Dragon

“Heat is energy, little homeowner. And I have been hungry.”

The Battery

“Please do not ask me to feed that dragon all night.”

Solar Sensei explains

“First, we separate heat from movement.”

Solar Sensei walks into the garage and draws two columns on the wall. One column says moving water. The other says heating water.

The pump from Episode 1 peeks around the corner. “Do I get to be in this episode?”

“Only as a comparison,” says Solar Sensei. “You are a motor-load problem. The dragon is a heat-energy problem.”

Solar Sensei’s distinction

Pumps move water.
Water heaters add heat energy.
Motors may need startup surge.
Heating loads may need long-duration energy.
Hot-water tanks can store heat.
Batteries store electricity, not gallons of hot water.

Panel 2

The dragon meets solar electric.

The homeowner points to the roof. “But I have solar panels.”

The dragon smiles. “Wonderful. Then we must ask when the roof makes power, when I demand heat, and whether the tank can store enough hot water to behave politely.”

Solar Electric / PV

Photovoltaic panels make electricity. That electricity can support many loads, including electric water-heating equipment, but only when the system design, timing, panel capacity, and electrical infrastructure make sense.

Compare solar hot water and solar electric

Solar Thermal

Solar thermal systems capture heat directly for water or heat-transfer fluid. They are specialized mechanical and plumbing systems with their own design, maintenance, and code requirements.

Panel 3

The hot-water tank reveals its secret identity.

The tank clears its throat and announces, “I am not just a dragon. I am also storage.”

Solar Sensei nods. “Correct. A battery stores electricity. A hot-water tank stores heat. If the system is designed properly, timing can matter.”

The homeowner blinks. “So the tank can help shift energy use?”

The dragon puffs one proud little cloud of steam. “At last, someone appreciates my thermal personality.”

Timing questions

Can water heating happen during solar production?
Is the tank large enough for evening use?
Will the household run out of hot water?
Do controls respect manufacturer requirements?
Does the utility rate punish evening heating?
Should the battery be protected from water-heating loads?

Panel 4

The battery refuses to become dragon food.

The homeowner looks at the battery. The battery backs away.

“I am here for critical loads,” says the battery. “Lights, refrigeration, communications, selected pumps, and real backup priorities. I am not an all-night dragon buffet unless the system was designed that way.”

Good battery question

Does hot water need to be available during an outage, or can stored tank heat carry the household for a while?

Bad battery assumption

“The battery will run the whole water heater like nothing happened.”

Better design habit

Define whether water heating is backed up, limited, shifted to solar hours, or excluded from backup.

Battery backup planning

Madame Peak Rate appears

“Darling, dragons are expensive at the wrong hour.”

Just as the homeowner begins to understand, Madame Peak Rate sweeps into the garage with a jeweled calculator.

“A water heater recovering at the wrong time,” she says, “can be deliciously expensive.”

The Dragon

“I prefer to eat whenever I am hungry.”

Madame Peak Rate

“And I prefer customers who never look at schedules.”

Solar Sensei

“We will not guess. We will review the load, the tank, the controls, and the rate.”

Real-world lesson

What Episode 2 teaches

Manga Moment	Real Meaning	Planning Action
The water heater becomes a dragon.	Heating water can be a significant energy load.	Identify fuel type, equipment type, tank size, and usage pattern.
Solar Sensei separates heat from movement.	Pump loads and heating loads behave differently.	Do not use pump logic to design water-heating strategy.
The tank says it is storage.	Hot water tanks store thermal energy.	Review timing, tank capacity, and comfort requirements.
The battery refuses dragon duty.	Water heating can consume too much backup energy if not planned.	Define whether hot-water equipment is backed up, limited, or excluded.
Madame Peak Rate appears.	Utility-rate timing can make water heating more expensive.	Review load shifting and controls when appropriate.

Solar Hot Water vs Solar Electric Utility Rates and Water Equipment Back to Manga Episodes

Episode conclusion

The dragon is not defeated. It is understood.

The homeowner looks at the water heater with new respect.

“So the dragon was not evil?” he asks.

Solar Sensei shakes his head.

“The dragon was hungry. The mistake was pretending heat had no cost.”

The water heater dragon curls around the tank and smiles. The battery relaxes. Madame Peak Rate leaves, disappointed. Solar Sensei writes one final note: heat loads deserve their own plan.

Next episodes

Important safety and licensing note

TheSolarPlumber.com manga episodes are fictional educational comedy. This page is not plumbing advice, not water-heater installation advice, not gas-appliance advice, not electrical engineering advice, not solar thermal design advice, not battery-system design advice, and not a substitute for licensed professionals. Water heaters, gas appliances, heat pump water heaters, solar thermal systems, PV systems, batteries, pumps, pressure systems, backup-power systems, and electrical panels require proper design, permits, inspections, maintenance, and qualified professionals.

ABC Solar Incorporated

Have a real water-heating load hiding in the bill?

ABC Solar can review the solar, battery, inverter, utility-rate, and electrical-load side of water heating so the system is planned around real energy use, timing, and backup expectations.

Contact ABC Solar Call 1-310-373-3169 Visit ABCSolar.com