Update Log

October 27, 2026

I found no verifiable status changes this week: New York's SUNNY Act is still unsigned (the governor's office said on Oct 23 that it hadn't been delivered to her), Massachusetts is still in conference committee, and the Michigan, Ohio and Pennsylvania bills are still in committee. California and New Jersey were already listed as enacted.

• Fact check: Hoymiles HiFlow Pro is the first UL 3700-compliant plug-in microinverter in the US (July 2026); has any other product since been certified or listed? — Hoymiles is still reported as first (July 2026), but it is no longer the only one. APsystems followed with its EZ1 plug-in microinverter, CSA-certified to UL 3700. Mango Power's S Pro microinverters were recognized by Intertek, with an Authorization to Mark issued September 7, 2026. That is component-level recognition, not a full-system listing. Solar.com lists Mango Power as the third company with a UL 3700-certified product. As of late August, California's Assembly analysis said no complete plug-in system had been certified.
• Fact check: US average residential electricity rate is 18.44 cents/kWh — 18.44 was the May 2026 monthly figure and is out of date. The latest EIA monthly figure is 18.16 cents/kWh for August 2026. This is preliminary and comes from a secondary summary of EIA data. The July 2026 figure was 18.31 cents/kWh. The rate changes monthly, so cite a month or the annual average (17.30 cents for 2025).

Sources: homeclimatejournals.info · roofpayback.com · www.eia.gov · www.mangopower.com · www.solar.com · www.solar.com

October 20, 2026

I found no status changes from the tracker: California and New Jersey are already listed as enacted, New York's SUNNY Act still awaits Gov. Hochul's signature, and the Massachusetts, Pennsylvania, Ohio, Michigan, South Carolina and D.C. bills show no new floor or committee action in sources I could cite.

• Fact check: Hoymiles HiFlow Pro is the first UL 3700-compliant plug-in microinverter in the US (announced July 2026); any others since? — The 'first' claim still holds, but it is no longer the only certified product. APsystems announced its EZ1 plug-in microinverter as CSA Certified to UL 3700 on July 15, 2026. Mango Power's Mango Power S kit was certified by Intertek in September 2026, which pv magazine USA called the third company with a UL 3700 certification. Some sources say the certifications cover components, not complete systems.

Sources: pv-magazine-usa.com · usa.apsystems.com · www.solar.com

October 13, 2026

No state status changed from the tracker this week: California's SB 868 and New Jersey's S 2368/A 4836 were already listed as enacted, New York's SUNNY Act is still awaiting Gov. Hochul's signature, and Massachusetts' bill is still in conference committee.

• Fact check: Hoymiles HiFlow Pro is the first UL 3700-certified plug-in microinverter, and no other product has been certified since (claim 2) — The 'first' claim still holds, but it is no longer the only certified product. APsystems announced its EZ1 plug-in microinverter, CSA-certified to UL 3700, on July 15, 2026. Mango Power's Mango Power S kit was certified by Intertek to UL 3700 in September 2026. pv magazine USA calls Mango Power the third company with a UL 3700 certification, after Hoymiles and APsystems.
• Fact check: US average residential electricity rate is 18.44 cents/kWh (claim 3) — The latest EIA monthly figure (July 2026) is 18.31 cents/kWh. One aggregator shows 18.34 cents for October 2026, but its page also carries a stray 18.44 figure. The EIA-sourced 18.31 is the best-supported current number.

Sources: ecoki.com · pv-magazine-usa.com · usa.apsystems.com · www.chooseenergy.com · www.electricchoice.com · www.solar.com

October 06, 2026

California's SB 868 was signed on Sept. 30 and is now enacted, while New York's SUNNY Act is still awaiting Hochul and Massachusetts is still reported to be in conference, so those two stay unchanged.

• California: pending_signature → enacted (SB 868 (Plug and Play Solar Act))
• EcoFlow STREAM Microinverter: $299 → $369
• Fact check: Hoymiles HiFlow Pro is the first UL 3700-compliant plug-in microinverter in the US (July 2026). The question was whether any other product has since been certified or listed. — The 'first' claim still holds, but it is no longer the only certified product. APsystems' EZ1 microinverter was CSA-certified to UL 3700 around July 15, 2026. Mango Power's Mango Power S system was certified by Intertek to UL 3700 in September 2026, which pv magazine calls the third company to be certified. Bright Saver kits use the HiFlow Pro.
• Fact check: The US average residential electricity rate is 18.44 cents/kWh — The latest EIA monthly data (July 2026) puts the US average residential rate at 18.31 cents/kWh. Another summary of EIA data gives 18.34 cents/kWh for June 2026. The 18.44 figure does not match the latest EIA numbers.
• New post published: California enacts plug-in solar law, effective January 2027

Sources: ecoki.com · energyfactbook.com · pv-magazine-usa.com · pv-magazine-usa.com · usa.apsystems.com · ware.solar · www.canarymedia.com · www.chooseenergy.com · www.homedepot.com · www.kpbs.org · www.solar.com

September 29, 2026

I found no status changes this week. California SB 868 is still on Gov. Newsom's desk with a September 30 deadline, and New York's SUNNY Act is still awaiting Gov. Hochul. The Massachusetts energy bill is still in conference committee, and New Jersey's September 1 signing was already tracked as enacted.

• EcoFlow STREAM Microinverter: $369 → $299
• Fact check: Hoymiles HiFlow Pro is the first UL 3700 plug-in microinverter, and no other product has since been certified or listed — Hoymiles was first on 15 July 2026, but it is no longer the only certified product. APsystems' EZ1 (EZ1-LV) is CSA Certified to UL 3700, and its announcement is also dated 15 July 2026. Mango Power's Mango Power S was certified by Intertek in September 2026. pv magazine calls Mango Power the third company certified, after Hoymiles and APsystems.
• Fact check: US average residential electricity rate is 18.44 cents/kWh — The latest EIA-based figure is 18.34 cents/kWh (June 2026 data, cited as current as of September 2026).

Sources: pv-magazine-usa.com · usa.apsystems.com · www.chooseenergy.com · www.ecoflow.com · www.electricchoice.com

September 22, 2026

The main development this week is Delaware's SB 270 stalling in committee, with lawmakers pivoting to a study resolution (SR 21) rather than advancing the bill, while California's SB 868 and New York's SUNNY Act both remain pending gubernatorial signatures with no other confirmed status changes found.

• Delaware: advancing → stalled (SB 270)
• Fact check: Hoymiles HiFlow Pro is the only UL 3700-compliant plug-in microinverter in the US — At least one other product has since achieved UL 3700 certification: the APsystems EZ1 plug-in microinverter is CSA Certified to UL 3700 and has been on the market (including in Maine and other states) since mid-2026, alongside Hoymiles' HiFlow Pro/HiFlow 360 Pro.

Sources: citizenportal.ai · legis.delaware.gov · legis.delaware.gov · solcountry.com · usa.apsystems.com · usa.apsystems.com · www.wboc.com

September 15, 2026

The main development this week is procedural: North Carolina's balcony solar bills (HB 1129/SB 957) have effectively stalled after the General Assembly adjourned its regular voting session until after the November elections, while California's SB 868 and New York's SUNNY Act remain unsigned on their governors' desks with no other confirmed status changes across tracked states.

• North Carolina: advancing → stalled (HB 1129 / SB 957)
• Fact check: Hoymiles HiFlow Pro is the only UL 3700-compliant plug-in microinverter in the US — A second product has since been certified: the APsystems EZ1 Plug-in Microinverter is now CSA Certified to UL 3700 and available in the US (priced around $325 as of August 2026), making it the other UL 3700-certified plug-in microinverter alongside the Hoymiles HiFlow Pro.
• Fact check: US average residential electricity rate is 18.44 cents/kWh — The current US average residential electricity rate as of September 2026 is 18.34 cents/kWh, not 18.44 cents/kWh.

Sources: publicschoolsfirstnc.org · simplepluginsolar.com · sites.ncleg.gov · usa.apsystems.com · www.chooseenergy.com · www.electricchoice.com

September 08, 2026

New Jersey moved from pending_signature to enacted after Governor Sherrill signed the Garden State Balcony Solar Act (S2368/A4836) on September 1, 2026; all other tracked states remain unchanged, with California's SB 868 and New York's SUNNY Act still awaiting gubernatorial action.

• New Jersey: pending_signature → enacted (S 2368 / A 4836 (Garden State Balcony Solar Act))
• Hoymiles HiFlow Pro: $0 → $153
• EcoFlow STREAM Microinverter: $299 → $369
• Fact check: The Hoymiles HiFlow Pro is the only UL 3700-compliant plug-in microinverter in the US — No longer exclusive — APsystems has also achieved UL 3700 certification for its EZ1-LV/EZ1 Plug-in Microinverter (certified July 15, 2026), and CraftStrom is reported as UL certified pending full system-level verification. Sources still debate which product was technically "first," but multiple certified/listed products now exist beyond Hoymiles.
• Fact check: US average residential electricity rate is 18.44 cents/kWh — As of September 2026, multiple current sources put the U.S. average residential electricity rate at 18.34 cents/kWh, not 18.44 cents/kWh.
• New post published: New Jersey enacts Garden State Balcony Solar Act

Sources: simplepluginsolar.com · solcountry.com · us.ecoflow.com · ware.solar · www.chooseenergy.com · www.electricchoice.com · www.nj.gov · www.notebookcheck.net · www.solarpowerworldonline.com

September 01, 2026

No status changes were found this week; California's SB 868, New York's SUNNY Act, and New Jersey's S 2368/A 4836 remain awaiting gubernatorial action, and other advancing/stalled bills (Massachusetts H 5175, Ohio HB 755, Pennsylvania HB 1971, North Carolina HB 1129/SB 957, Delaware SB 270) show no new votes or committee action confirmed by legislature sites or pv-magazine/Canary Media/Electrek reporting since the tracker was last updated.

• EcoFlow STREAM Microinverter: $369 → $299
• Fact check: Hoymiles HiFlow Pro is the only UL 3700-compliant plug-in microinverter in the US — Other products have since received UL 3700 certification. As of August 2026, APsystems' EZ1-LV microinverter was certified to UL 3700 on July 15, 2026, and Bright Saver has also confirmed UL 3700 certification for its plug-in solar products, so Hoymiles' HiFlow Pro is no longer the sole certified option.
• Fact check: Hoymiles HiFlow Pro price — The HiFlow Pro is now for sale with published pricing, starting at $152.72 for the entry-level HMS-391-1WM-LV model at an authorized dealer (NAZ Solar Electric), rather than being unpriced/unavailable.

Sources: solcountry.com · us.ecoflow.com · www.notebookcheck.net

August 28, 2026

No confirmed status changes this week — California SB 868, New Jersey S2368/A4836, and New York's SUNNY Act all remain on their governors' desks awaiting action, and other advancing/stalled bills (Massachusetts, Delaware, Pennsylvania, North Carolina, Ohio) show no new floor votes or committee actions beyond what's already reflected in the tracker.

• EcoFlow STREAM Microinverter: $599 → $369
• EcoFlow STREAM Ultra: $2,399 → $1,279
• PluggedSolar 800 W Kit: $1,000 → $699
• Fact check: Hoymiles HiFlow Pro is the only UL 3700-compliant plug-in microinverter in the US — A second product has since achieved UL 3700 certification. APsystems' EZ1 plug-in microinverter is now CSA Certified to UL3700 standards, announced/updated around the same time as the Hoymiles launch, giving US buyers a second certified option alongside the HiFlow Pro.

Sources: apshop.apsystems.com · pluggedsolar.com · us.ecoflow.com · usa.apsystems.com · usa.apsystems.com · www.techradar.com