NEM 3.0 and Broken Solar Savings Promises: What Changed and Why Your Bill Didn’t Drop

If you went solar in California expecting your electric bill to shrink or disappear — and it didn’t — there is a specific, documentable reason, and it is not your imagination. In April 2023, California overhauled how homeowners are paid for the solar energy they send back to the grid. The change, known as NEM 3.0 (officially the Net Billing Tariff), cut the value of exported solar by roughly 75% overnight. For many homeowners, that single policy change is the reason the savings a salesperson promised never materialized. This guide explains what NEM 3.0 is, exactly how much it cut your savings, why so many sales projections turned out to be wrong, and what your options are if you were sold solar on numbers that no longer exist. Credible Law is a national legal resource and attorney referral network, not a law firm, and connects homeowners with attorneys who handle solar contract disputes.

What Is NEM 3.0?

NEM stands for “net energy metering” — the system that determines how much credit you get for the excess solar power your panels send to the grid. For years, California used a generous version of net metering that credited that exported power at nearly the full retail electricity rate. NEM 3.0, which the California Public Utilities Commission approved and which took effect on April 15, 2023, replaced that system with a fundamentally different one called the Net Billing Tariff.

The core change is how exported energy is valued. Under the old rules, a kilowatt-hour you exported was worth roughly what a kilowatt-hour you bought cost — close to the retail rate. Under NEM 3.0, exported energy is valued at “avoided cost” — the wholesale value to the utility, calculated through the CPUC’s Avoided Cost Calculator — which is dramatically lower. It applies to the three big investor-owned utilities: PG&E, SCE, and SDG&E.

Who It Applies To — and Who’s Grandfathered

NEM 3.0 applies to homeowners who submitted their interconnection application on or after April 15, 2023. If you received Permission to Operate (PTO) before that date, you are grandfathered onto the older, more favorable NEM 2.0 rates — generally for 20 years from your original PTO date. This grandfathering line is important: two neighbors with identical systems can have completely different economics depending on which side of April 2023 they landed on.

How Much NEM 3.0 Actually Cut Your Savings

The numbers are stark, and they come from the utilities’ own rate structures and industry analysis:

• Export credit value dropped roughly 75%. Under NEM 2.0, exported energy earned around $0.30 per kilowatt-hour — close to retail. Under NEM 3.0, that same export earns roughly $0.05 to $0.08 per kilowatt-hour on average.
• Monthly export earnings collapsed. A homeowner exporting 400 kWh a month who earned about $120 under NEM 2.0 now earns roughly $24 — a loss of about $96 every month.
• Annual export savings fell by over $1,000. That same household went from roughly $1,440 a year in export value to about $288 — a difference of more than $1,150 annually, for the entire life of the system.
• Payback periods stretched dramatically. Solar-only systems that used to pay for themselves in 5 to 7 years now take 8 to 15 years under NEM 3.0, because the surplus you export is worth so little.

One more subtle but important change: NEM 3.0 shifted from annual “true-up” billing to monthly billing, and layered in complex time-of-use rates — by some counts, hundreds of rate combinations — where midday solar (when your panels produce most) is valued lowest and evening power (when you buy most) costs the most. The mismatch is the whole point of the policy, and it is brutal for a solar-only home.

Why This Broke So Many Solar Savings Promises

Here is where NEM 3.0 becomes a legal issue, not just an energy-policy one. Solar was sold — and is sometimes still sold — with a savings projection: a document or app screen showing your future bill dropping to near zero. Those projections are built on assumptions about how much your exported power is worth. When a projection is built on NEM 2.0’s retail-rate export value but you are actually on NEM 3.0’s wholesale rate, the promised savings are simply wrong — often by more than a thousand dollars a year. That gap between the pitch and the policy is exactly the kind of misrepresentation behind many solar contract disputes.

Using Outdated Projections After the Rules Changed

The most serious version: a homeowner who signed after April 2023 — already under NEM 3.0 — but was shown a savings projection built on the old NEM 2.0 export rates. If your “zero bill” projection assumed export credits that no longer existed when you signed, the number you were sold was inaccurate from the start.

Not Disclosing the Battery Requirement

Under NEM 3.0, the math only works well if you pair solar with a battery — so you can store cheap midday power and use it in expensive evening hours instead of exporting it for pennies. Batteries cost roughly $10,000 to $15,000. Many homeowners were sold solar-only systems on savings numbers that quietly assumed battery-level performance, or were never told that without a battery their NEM 3.0 savings would be a fraction of the projection.

Silence on the Grandfathering Cliff

Some homeowners rushed into contracts believing they were locking in favorable rates, without being clearly told whether their interconnection would actually land before or after the April 2023 cutoff. Landing on the wrong side of that date changes the economics for 20 years.

NEM 2.0 vs. NEM 3.0: A Side-by-Side

Because the difference between the two systems is the whole story, it helps to see them side by side. The change was not a tweak — it reshaped the economics of every new California solar system.

Export credit basis. Under NEM 2.0, exports were credited at the retail electricity rate — roughly a one-to-one exchange, so a kilowatt-hour you sent to the grid offset a kilowatt-hour you later pulled from it. Under NEM 3.0, exports are credited at avoided cost from the CPUC’s Avoided Cost Calculator, a wholesale figure that strips out transmission, distribution, and utility overhead.

Average export value. NEM 2.0 paid roughly $0.28–$0.35 per kilowatt-hour. NEM 3.0 pays roughly $0.05–$0.08 — the roughly 75% cut at the center of every NEM 3.0 discussion.

Billing cycle. NEM 2.0 used an annual true-up, which let a big spring surplus quietly carry forward to offset a summer deficit. NEM 3.0 bills monthly, so seasonal surpluses no longer smooth out the year the way they used to.

Rate complexity. NEM 2.0 applied relatively simple time-of-use periods. NEM 3.0 layers in far more granular, hour-by-hour values — by some counts hundreds of rate combinations — deliberately valuing midday solar low and evening power high.

Battery incentive. Under NEM 2.0, a battery was a nice-to-have. Under NEM 3.0 it is close to essential, because the roughly four-to-five-times gap between avoiding a $0.30–$0.35 retail purchase and earning an $0.08 export credit is exactly what a battery captures by shifting your own power into the expensive evening hours.

A Real 20-Year Cost Example

Numbers make the stakes concrete. Take a household that exports about 400 kilowatt-hours of surplus a month. Under NEM 2.0, that surplus was worth roughly $120 a month, or about $1,440 a year. Under NEM 3.0, the same surplus earns roughly $24 a month, about $288 a year. That is a difference of about $1,152 every year.

Now stretch that across the life of the system. Over a 20-year span — the horizon most solar savings projections use — that annual gap compounds to well over $23,000 in lost export value, before even accounting for the utility’s own rate increases over two decades. If a homeowner signed a 20-year loan or lease based on a projection that assumed the $1,440-a-year figure, but is actually earning the $288-a-year figure, the entire financial premise of the deal is off by tens of thousands of dollars. That is not a rounding error or an optimistic estimate — it is the difference between a system that pays for itself and one that never does, and it is why a projection built on the wrong net-metering tier is such a serious problem.

Was Your Solar Savings Projection Misrepresented?

You may have a claim tied to how your savings were sold if any of these apply:

• You signed after April 15, 2023 but were shown savings based on full retail-rate net metering.
• You were promised a near-zero bill and your actual bills are dramatically higher than projected.
• You were sold a solar-only system on savings numbers that only a solar-plus-battery setup could achieve.
• No one explained NEM 3.0 or that export credits had been cut roughly 75%.
• You were told you’d be grandfathered onto NEM 2.0 but your interconnection landed after the cutoff.
• Your loan payment plus your utility bill now exceeds what you paid the utility before going solar.

If several of these ring true, the problem is not that solar “doesn’t work” — it is that you may have been sold a specific dollar figure that was never achievable under the rules in effect. That is a solar fraud or deceptive-practices question worth reviewing.

What You Can Do If You Were Misled

If your savings projection was built on rates that did not apply to you, several paths may be open:

1. Pull your savings projection and your actual bills. Put the promised number next to your real post-installation bills. The gap is your evidence.

2. Confirm your net-metering tier. Check whether you are on NEM 2.0 or NEM 3.0 — your PTO date and utility account will tell you, and it determines what your exports are actually worth.

3. Check what you were shown versus what applied. If you signed after April 2023 but the projection used retail-rate exports, that is a documentable misrepresentation.

4. Consider your remedies. A materially false savings projection can support canceling the contract, a deceptive-practices claim, or — on a home-secured loan — TILA rescission.

5. File a complaint and get a review. The California Public Utilities Commission handles utility issues, your state attorney general handles deceptive sales, and a solar attorney can assess a misrepresentation claim.

A caution that applies to every solar dispute: do not simply stop paying while you contest the contract — it can trigger default and damage your credit before your claim resolves. Sequence any decision with a qualified attorney.

Is Net Metering Changing in Other States?

Yes — and this is worth knowing even outside California, because the same misrepresentation risk follows the policy. Traditional full-retail net metering is being scaled back or reconsidered in a number of states, with Nevada, Arizona, and Hawaii among those that have changed or reduced export compensation, and others studying it. Existing customers are often grandfathered onto older rates for a set period, but new customers face the reduced-credit reality. Wherever the rules have shifted, a savings projection built on the old, more generous net metering can overstate the benefit — so the core question is the same in any state: were you sold a number that the rules in effect at signing could actually deliver?

Frequently Asked Questions

What is NEM 3.0 in simple terms?

NEM 3.0, officially California’s Net Billing Tariff, is the rule that took effect April 15, 2023 governing how much credit you earn for excess solar power you send to the grid. It cut that export credit by roughly 75%, from near the retail rate (about $0.30/kWh) to a wholesale avoided-cost rate (about $0.05 to $0.08/kWh), which sharply reduced solar savings for systems that don’t pair with a battery.

Why didn’t my solar bill go down like I was promised?

The most common reason in California is NEM 3.0. If your savings projection assumed the old retail-rate export credits but you are actually on NEM 3.0’s much lower wholesale rate, the promised savings were overstated, often by more than $1,000 a year. If you were shown NEM 2.0 numbers after April 2023, that may be a misrepresentation.

Am I on NEM 2.0 or NEM 3.0?

If you received Permission to Operate before April 15, 2023, you are generally grandfathered on NEM 2.0 for 20 years from your PTO date. If your interconnection application was on or after that date, you are on NEM 3.0. Your utility account and PTO date confirm which applies.

Does NEM 3.0 mean solar isn’t worth it?

Not necessarily, especially with a battery, which lets you use your own power in expensive evening hours instead of exporting it cheaply. The legal issue is not whether solar can work under NEM 3.0; it is whether you were sold a specific savings figure that the rules could not actually deliver.

Can I cancel my solar contract if the savings were misrepresented?

Possibly. A materially false savings projection can support cancellation, a deceptive-practices claim, or, on a home-secured loan, TILA rescission. Whether it applies depends on what you were shown, when you signed, and your documents, which an attorney can review.

I was told I’d be grandfathered on NEM 2.0 but I’m on NEM 3.0. What now?

If you were told your system would qualify for NEM 2.0 rates but your interconnection landed after the April 2023 cutoff, that gap between the promise and the outcome may be actionable, since it changes your economics for 20 years. Document what you were told and have it reviewed.

Does this only affect California?

No. Nevada, Arizona, Hawaii and other states have reduced or changed net-metering credits, and more are considering it. Anywhere the rules changed, a savings projection built on the older, more generous net metering can overstate the real benefit.

Were You Sold Solar on Savings That Never Came?

If your solar bill never dropped the way you were promised — and you were on NEM 3.0 the whole time, or sold numbers that only a battery could deliver — the problem may not be your system, but the projection you were sold. Credible Law connects homeowners nationwide with independent, licensed attorneys who handle deceptive solar sales, contract cancellation, and misrepresented-savings claims. An attorney can compare what you were shown against the rules that actually applied and tell you whether you have a case. There is no cost to be matched with counsel.

Credible Law is a national legal resource and attorney referral network, not a law firm, and does not provide legal or energy advice or representation. This article is for educational purposes only and does not create an attorney–client relationship. Net-metering rules, rates, and grandfathering vary by state, utility, and the specifics of your interconnection; confirm your own rate with your utility and consult a licensed attorney about any misrepresentation claim. Export-rate figures are approximate industry averages current as of September 2026.