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Net Metering Value Calculator

Net metering lets rooftop solar receive retail or near-retail credit for excess generation.

Annual production kWh

On-site use %

Retail rate

NEM credit %

Demand reduction / yr

Annual solar value

$41,250

On-site value

$26,250

Export value

$7,000

How the math works

On-site = consumption × retail. Export = export × retail × NEM %. + demand reduction.

250k × 75% × $0.14 + 250k × 25% × $0.14 × 80% + $8,000 = $26,250 + $7,000 + $8,000 = $41,250.

Editorial noteMaintained by EveryCalc - Reviewed June 2026

EveryCalc calculators are designed for fast, practical estimates with transparent inputs and no required account. We use plain formulas, visible assumptions, and related tools so visitors can check the result from more than one angle.

Results are informational only. For financial, tax, legal, medical, construction, or other high-impact decisions, verify the output against primary sources or a qualified professional.

Learn more about our review process on the EveryCalc methodology page.

How this calculator works

What this page estimates

This Net Metering Value Calculator is built to give a quick, browser-based estimate for net metering value. Net metering lets rooftop solar receive retail or near-retail credit for excess generation. The inputs stay on the page during normal use, and the result should be treated as an estimate for planning, comparison, or education rather than professional advice.

Calculation approach

The calculator applies the standard relationship implied by the inputs, then formats the answer so it can be checked and reused. For finance tools, the most important step is using consistent units, rates, time periods, and assumptions before comparing the result with another calculator or outside quote.

Example workflow

For example, start with a realistic value you already know, change one input at a time, and watch how the answer moves. That makes it easier to tell whether the result is being driven by the main amount, the rate, the time period, or a unit conversion.

Practical checks

Use current, real-world numbers when the result affects money, health, tax, or legal decisions.
Run a low, base, and high case when the inputs are estimates.
Check the related calculators below when the next decision depends on a different assumption.

How to interpret the net metering value result

Best use

Use the result as a planning number for comparing payments, rates, returns, tax reserves, or cash-flow choices before you request a quote or make a commitment.

Cross-check

Compare the answer with the contract, lender estimate, tax form, brokerage statement, payroll record, or invoice that will control the real-world outcome.

Watch for

Do not rely on a single optimistic rate, return, or fee assumption. Money pages work best when you run low, base, and high cases and keep professional advice separate from the estimate.

This page belongs to the Finance calculator library, so the answer should be read in the context of the decision you are modeling rather than as a universal rule.

Before relying on this net metering value estimate

Most calculator mistakes come from the inputs, not the arithmetic. Use this short audit before you reuse the answer in a spreadsheet, quote, application, or important conversation.

Confirm source numbers

Match balances, rates, fees, taxes, income, and payment dates against the lender quote, payroll record, tax form, statement, invoice, or contract.

Separate cash flow from total cost

A lower monthly payment can still cost more over time if fees, interest, taxes, or a longer term are hidden in the structure.

Run conservative cases

Test at least one higher-cost or lower-return case before using the output for a purchase, refinance, investment, loan, or tax decision.

Rerun this page when the rate, price, term, fee, tax rule, income, expense, or expected holding period changes.

How to Use

Enter annual solar production kWh.
Enter on-site consumption %.
Enter retail rate.
Enter net metering credit rate %.
Enter demand charge reduction.
Read annual solar value.

Frequently Asked Questions

Net metering structure?

Traditional 1-for-1 net metering: excess solar exported at retail rate ($0.10-0.30/kWh). Value of solar tariff: credit at calculated 'value' (often 70-90% of retail). Time-of-use rate: export credit based on time-of-day (lower off-peak, higher on-peak). Feed-in-tariff (FiT): pre-set rate. California NEM 3.0: export rate ~25-40% of retail — major compression.

NEM policy landscape?

California NEM 3.0 (2023): export credit cut 75-85% from NEM 2.0. Retroactive grandfathering. Hawaii: no net metering since 2015 (self-supply only). Nevada: partial net metering. Arizona: compensation near retail. Florida, Texas: varies by utility. Rollback trend: utilities lobby for less favorable terms citing 'cost shift'. Solar customers impacted financially; many opting for battery storage to self-consume.

Battery addition?

Battery + solar: self-consume more, export less, avoid unfavorable export rates. Battery cost: $8-20k residential, $100-500k commercial. ITC 30% applies if paired with solar. Capacity: 10-15 kWh residential, 50-500 kWh commercial. Offsets: 60-90% of previously exported kWh. Combined system: restore ~70-85% of pre-NEM-3 economics in affected markets.

Commercial value?

Commercial buildings: high on-site consumption during daytime solar production = minimal export. Demand charge reduction: solar + battery can cut peak demand charges $5-40/kW-month. Often bigger than energy savings. Whole-building NEM analysis critical. REC + ITC + energy + demand = 4-component value stack. Project ROI driven primarily by demand reduction in commercial vs retail credits in residential.