Meet our EarthWise Solar sponsors

SRP is grateful to business customers who support our clean energy programs.

We'd like you to meet our EarthWise Solar Energy sponsors.

Install a solar energy system for your business and get cash back

Let the sun shed some light on your business. EarthWise™ Solar Energy is a program designed to help reduce the cost of installing a new solar electric or solar water heater for your business. SRP EarthWise represents our environmental commitment to Arizona by offering programs that support clean energy. The goal of EarthWise Solar Energy is to encourage investment and interest in solar power, an emissions-free and inexhaustible source of energy.

SRP EarthWise is proud to offer the following options for installing solar energy.

Small solar electric system

When you install a small solar electric system, SRP will help defray your cost with an incentive of $3 per watt, up to $60,000. Here's an example of the costs and incentives associated with the installation of a solar electric system:

Size Typical cost¹ SRP solar incentive Arizona tax credit² Federal tax credit³ Net cost Annual savings4 Simple payback
20 kW $140,000 $60,000 $14,000 $42,000 $24,000 $2,880 8 years
  1. Costs may vary depending upon the contractor and materials you select.
  2. The Arizona tax credit is 10% of the cost, capped at $25,000.
  3. The federal tax credit is 30% of cost, with no cap. This tax credit expires on 12/31/08.
  4. Savings are calculated based on an annual energy production of 1,600 kWh per kW-DC at $0.09 per kWh. Does not include additional tax savings that may be possible through accelerated depreciation.

Applying for the small solar electric incentive

If you plan to install a solar electric system, please review:

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Large solar electric system:

When you install a large solar electric system, SRP will help defray your cost with an incentive of $2.50 per watt, up to $500,000. The incentive is adjusted based on the expected energy generation and verified during a 30-day performance test. Here's an example of the costs and incentives associated with the installation of a solar electric system:

Size Typical cost¹ SRP solar incentive² Arizona tax credit³ Federal tax credit4 Net cost Annual savings5 Simple payback
100 kW $700,000 $250,000 $25,000 $210,000 $215,000 $14,400 15 years
  1. Costs may vary depending upon the contractor and materials you select.
  2. The $2.50 per watt incentive corresponds to a system with an annual energy production of 1,600 kWh per kW-DC. Actual incentive adjusted from estimated incentive based on results of 30-day test relative to expected performance.
  3. The Arizona tax credit is 10% of the cost, capped at $25,000.
  4. The federal tax credit is 30% of cost, with no cap. This tax credit expires on 12/31/08.
  5. Savings are calculated based on an annual energy production of 1,600 kWh per kW-DC at $0.09 per kWh. Does not include additional tax savings that may be possible through accelerated depreciation.

Applying for the large solar electric incentive

If you plan to install a solar electric system, please review:

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Solar water heater


SRP commercial customers who install a solar water heating system qualify for an incentive of $0.50 per kWh of metered first year energy savings. Here's an example of the costs and incentives associated with the installation of a solar water heating system:

Energy production Typical cost¹ SRP solar incentive Arizona tax credit² Federal tax credit³ Net cost Annual savings4 Simple payback
32,000 kWh per year $35,000 $16,000 $3,500 $10,500 $5,000 $1,400 3 years
  1. Costs may vary depending upon the contractor and materials you select.
  2. The Arizona tax credit is 10% of the cost, capped at $25,000.
  3. The federal tax credit is 30% of cost, with no cap. This tax credit expires on 12/31/08.
  4. Savings are based on a system that produces 1,092 therms per year at $1.28 per therm of natural gas. 1 therm=29.3 kWh. Does not include additional tax savings that may be possible through accelerated depreciation.

Applying for the solar water heater incentive

If you plan to install a solar water heater, please review:

Find out more

If you have questions about SRP EarthWise Solar Energy, please contact a solar representative at (602) 236-4448, or write to:

SRP EarthWise Solar Energy
Mail station PAB 355
P.O. Box 52025
Phoenix, AZ, 85072-2025

SRP EarthWise Solar Energy is also available to residential customers.

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