Subscription Sizing & Expected Annual Savings for Pacific Power Customers (LI)

The Oregon Community Solar Program offers low-income participants guaranteed electricity bill discounts. This page is intended to help you understand how discounts are calculated and how much you can expect to save through this program. Many of the terms and information found below can be found within your contract.

Definition of Terms

  • Household electricity consumption (kWh) is the amount of electricity your household consumes throughout the year. Reference past utility bill(s) to find your monthly (and annual) consumption.
  • Electricity Costs are based on a number of variable and fixed costs, including electricity charges, taxes, fees, credits and adjustments. Reference past utility bill(s) to help determine your annual costs.
  • Energy Adjustment (%) determines how much of your historical energy usage (up to 5 years) is sourced into the size of your solar subscription. This is calculated by either your project manager, Energy Trust of Oregon, or both. We recommend sizing your subscription at 80% of your total annual energy use. The final energy adjustment (%) is decided by your project manager, you, or both.
  • Solar Production (kWh) is the amount of expected solar energy that you can access through your subscription every year.  It is based on your historical energy usage (kWh) multiplied by your energy adjustment (%).   
  • Subscription Size (kW) is based on your household electricity consumption (kWh), energy adjustment (%) and solar panel production (kWh per kW). Any change to one or more of these variables will impact your total solar subscription size.   
  • Bill Savings: Calculated as the difference between bill credits and subscription fees.
  • Bill Credits are calculated as your bill credit rate ($/kWh) multiplied by total solar production (kWh) throughout the year. The bill credit rate is a fixed amount per kWh and is the same for all utility customers of Portland General Electric.
  • Subscription Fees are calculated as your subscription fee rate ($/kWh) multiplied by total solar production (kWh) throughout the year. The subscription fee rate is a fixed amount per kWh determined by your project manager and is at least 20% less than the bill credit rate.
  • Percent Savings are calculated as your annual solar savings divided by your annual electricity costs.

Pacific Power Savings Chart

Annual Electricity Costs

Household Electricity Consumption (kWh)

Energy Adjustment

Solar Subscription (kWh)

Subscription Size (1800 kWh/kW)

Annual Bill Credits

Annual Subscription Fees

Annual Savings

Percent Savings

$320.21

2000

80%

1600

0.89

$156.32

$125.06

$31.26

9.76%

$366.55

2500

80%

2000

1.11

$195.40

$156.32

$39.08

10.66%

$412.90

3000

80%

2400

1.33

$234.48

$187.58

$46.90

11.36%

$459.24

3500

80%

2800

1.56

$273.56

$218.85

$54.71

11.91%

$505.59

4000

80%

3200

1.78

$312.64

$250.11

$62.53

12.37%

$551.93

4500

80%

3600

2

$351.72

$281.38

$70.34

12.74%

$598.28

5000

80%

4000

2.22

$390.80

$312.64

$78.16

13.06%

$644.63

5500

80%

4400

2.44

$429.88

$343.90

$85.98

13.34%

$690.97

6000

80%

4800

2.67

$468.96

$375.17

$93.79

13.57%

$737.32

6500

80%

5200

2.89

$508.04

$406.43

$101.61

13.78%

$783.66

7000

80%

5600

3.11

$547.12

$437.70

$109.42

13.96%

$830.01

7500

80%

6000

3.33

$586.20

$468.96

$117.24

14.13%

$876.36

8000

80%

6400

3.56

$625.28

$500.22

$125.06

14.27%

$922.70

8500

80%

6800

3.78

$664.36

$531.49

$132.87

14.40%

$969.05

9000

80%

7200

4

$703.44

$562.75

$140.69

14.52%

$1,015.39

9500

80%

7600

4.22

$742.52

$594.02

$148.50

14.63%

$1,061.74

10000

80%

8000

4.44

$781.60

$625.28

$156.32

14.72%

$1,108.09

10500

80%

8400

4.67

$820.68

$656.54

$164.14

14.81%

$1,154.43

11000

80%

8800

4.89

$859.76

$687.81

$171.95

14.89%

$1,200.78

11500

80%

9200

5.11

$898.84

$719.07

$179.77

14.97%

$1,247.12

12000

80%

9600

5.33

$937.92

$750.34

$187.58

15.04%

$1,303.66

12500

80%

10000

5.56

$977.00

$781.60

$195.40

14.99%

$1,360.19

13000

80%

10400

5.78

$1,016.08

$812.86

$203.22

14.94%

$1,416.72

13500

80%

10800

6

$1,055.16

$844.13

$211.03

14.90%

$1,473.25

14000

80%

11200

6.22

$1,094.24

$875.39

$218.85

14.85%

$1,529.79

14500

80%

11600

6.44

$1,133.32

$906.66

$226.66

14.82%

$1,586.32

15000

80%

12000

6.67

$1,172.40

$937.92

$234.48

14.78%

$1,642.85

15500

80%

12400

6.89

$1,211.48

$969.18

$242.30

14.75%

$1,699.39

16000

80%

12800

7.11

$1,250.56

$1,000.45

$250.11

14.72%

$1,755.92

16500

80%

13200

7.33

$1,289.64

$1,031.71

$257.93

14.69%

$1,812.45

17000

80%

13600

7.56

$1,328.72

$1,062.98

$265.74

14.66%

$1,868.99

17500

80%

14000

7.78

$1,367.80

$1,094.24

$273.56

14.64%

$1,925.52

18000

80%

14400

8

$1,406.88

$1,125.50

$281.38

14.61%

Disclaimer: Please note that the numbers and figures represented above are based on a number of variable factors and assumptions. This chart is intended as a guide to help illustrate potential savings yet any change to one of these variables (e.g. your electricity consumption year-over-year or energy adjustment percentage) will impact all calculations illustrated above. As such, individual savings will vary on a case-by-case basis.

We support you.

If you find that you need extra assistance, please contact Community Energy Project, our low-income nonprofit partner.
CommunityEnergyProject.org
Community Solar Coordinator
971-544-8718
[email protected]

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