EXEL solar water heating is designed for Hawaii homes to dramatically reduce the grid electricity used for hot water.
Takes about 30 seconds.
Water heating consumes ~30% of your electric bill.
EXEL harnesses Hawaii's abundant sunshine to eliminate 95%+ of your water-heating electricity costs.
Save on water heating without sacrificing the hot water your household needs.
More hot water for showers, laundry and everyday life — sized for your household's demand.
Electric tanks rely on expensive grid power to heat your water.
Sun is available almost every day.
EXEL does not guarantee savings. Actual savings vary based on household hot-water usage, utility rates, weather, site conditions and system performance.
EXEL uses dedicated solar generation to provide energy for water heating, reducing the amount of grid electricity the home needs for hot water.
Hawaii sun, nearly every day.
Panels dedicated to your water heating.
Your tank heats with that solar energy.
Less grid power used for hot water.
Final system recommendation depends on household hot-water usage and property/site requirements.
Available incentives and financing can make upgrading to EXEL easier than many homeowners expect.
65 GAL · 3 SOLAR PANELS
Typical Fit: 1–3 Occupants
1.00% during months 1–12.
Rates as low as 7.25% for months 13–96, subject to financing terms and approval.105 GAL · 6 SOLAR PANELS
Typical Fit: 3+ Occupants
1.00% during months 1–12.
Rates as low as 7.25% for months 13–96, subject to financing terms and approval.Subject to lender approval, eligibility and applicable loan terms.
Tax credit: *Hawaii State Tax Credit shown as $2,250. Eligibility and the ability to use the credit depend on the homeowner's individual tax circumstances and applicable program requirements. Tax credits are not the same as an instant cash discount. EXEL does not provide tax advice. Customers should consult a qualified tax professional regarding their individual eligibility.
Financing: *Financing examples are based on the stated program assumptions. Approval, rates, payments and terms are subject to lender requirements and customer qualification. First-year payment examples do not represent the payment for the entire financing term.
Rebate: *Rebate availability and eligibility are subject to applicable program requirements and confirmation.
Now See What You Could Save Each Month.
Enter your monthly electric bill, household size and hot-water usage.
Enter your monthly electric bill and household size to see your estimate.
Estimate — not a guarantee. Estimated savings based on monthly electric bill and selected hot-water usage. Actual savings vary by household, usage, utility rates, system performance and site conditions.
EXEL.
NOW THAT'S HOT.
Advanced solar water heating built for Hawaii.
Dedicated solar power. Proprietary HFED technology. Intelligent hot-water management.
Older systems can develop leaks, lose performance or reach the point where replacement makes more sense than continued repairs.
Built for island homes and island sun.
Solar generation dedicated to water heating.
65 gallon or 105 gallon to match your household.
A few questions to see what may fit.
For many Hawaii homes with an electric water heater, water heating can account for approximately 30% of the home's electricity use.
That means if your electric bill is $500 per month, roughly $150 could be associated with heating water.
Your actual percentage depends on household size, hot-water usage, water-heater settings and other factors.
EXEL is designed to target this portion of your electric bill by using Hawaii's abundant sunshine as the primary energy source for water heating.
EXEL is designed to replace most of the grid electricity normally used for water heating with dedicated solar energy.
Our Hawaii field testing has shown approximately 95%+ reduction in grid electricity used for water heating under tested operating conditions.
Because water heating can represent a significant portion of a home's electric bill, reducing that grid usage can create meaningful savings.
Actual savings vary based on:
EXEL does not guarantee savings. Actual results vary by household and operating conditions.
EXEL is designed to keep producing and managing hot water even when conditions aren't perfect.
Photovoltaic panels can continue generating electricity under lower-light conditions, although solar production varies with available sunlight, weather, shading, orientation and time of day.
EXEL's intelligent controls manage the available solar energy and the home's hot-water needs.
And because EXEL is a hybrid solar water-heating system, the homeowner is not dependent on solar energy alone.
If additional heating is required when sufficient solar energy isn't available, EXEL's AC backup heating element can automatically provide supplemental heat.
EXEL is a hybrid solar water-heating system designed to combine the efficiency of dedicated solar heating with the reliability of automatic AC backup.
During normal operation, dedicated solar energy is the primary source used to heat the water.
EXEL also uses intelligent controls, AI and machine-learning algorithms to learn the household's hot-water usage patterns and help manage when hot water should be ready.
If stored hot water is depleted when sufficient solar energy isn't available — such as after unusually heavy nighttime hot-water use — the AC backup heating element can automatically provide supplemental heat.
EXEL Hawaii field operating experience
Actual results vary based on usage, weather, system sizing, installation conditions and other factors.
Traditional solar-thermal water heaters capture heat on the roof and typically transfer that heat through water or another heat-transfer fluid.
EXEL takes a different approach.
EXEL uses photovoltaic solar panels to generate electricity. That dedicated solar electricity powers EXEL's proprietary water-heating technology.
EXEL moves solar energy from the roof — not hot water.
The solar panels provide the energy — but the technology inside EXEL is what makes the system different.
At the heart of EXEL is HFED — High Frequency Energy Device.
The HFED produces the high-frequency DC pulse used to drive EXEL's proprietary four-element alloy heating element.
EXEL then adds an intelligence layer using AI and machine-learning algorithms to learn household hot-water usage patterns and help manage when hot water should be ready.
EXEL combines solar generation, advanced power electronics, proprietary heating technology and intelligent hot-water management in one integrated system.
EXEL is a solar-primary hybrid water-heating system.
Dedicated solar energy is designed to perform the large majority of the water heating.
However, EXEL also includes an AC backup heating element.
If the system needs additional heating when sufficient solar energy isn't available — for example after unusually heavy hot-water use at night — the AC backup can automatically provide supplemental heat.
Under Hawaii field operating experience, AC backup has been required approximately 5% of the time.
EXEL Hawaii field operating experience
Actual results vary based on usage, weather, system sizing, installation conditions and other factors.
EXEL offers two residential systems.
Household size is only one factor. Hot-water usage also matters.
A three-person household with unusually high hot-water demand may benefit from HOME MAX, while another three-person household may be well suited for HOME.
Answer a few quick questions and we'll help determine which EXEL system may fit your household.
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