PLUS: UK legalizes plug-in systems, Georgia's secret OpenAI deal, and solar saves Europe during deadly heatwaves

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Good morning. California just became the largest US state to eliminate utility gatekeeping for balcony solar. SB 868 lets renters and apartment dwellers plug panels directly into wall outlets without interconnection agreements. The bill passed the Senate 35-1 and awaits Governor Newsom's signature, opening solar access to millions locked out by landlords and utility monopolies.

This isn't just climate policy. It's direct action against electricity bills that doubled over the past decade. When a $500 system saves $250 annually and extreme heat is up 55% statewide, plug-in solar means families can cool their homes without choosing between AC and groceries. The question now: what happens when distributed energy becomes as simple as buying a microwave?

In today's Solarpunk Currents:

• California's balcony solar bill breaks utility monopoly for renters
• UK legalizes plug-in systems nationwide, major retailers stock up
• Georgia regulators approve secret 3.2 GW OpenAI deal with no public vote
• Solar kept Europe's lights on while nuclear and coal shut down in deadly heat

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California breaks down barriers: Legislature sends balcony solar bill to governor

The Bottom Line: California's legislature passed SB 868, eliminating utility interconnection agreements for plug-and-play solar systems up to 1,200W. Renters and apartment dwellers can now buy panels at retailers like IKEA, plug them into standard outlets, and start cutting electricity costs without utility permission. The bill awaits Governor Newsom's signature after passing the Senate 35-1.

The Story: For families trapped in California's affordability crisis (where electricity rates doubled over the past decade), balcony solar represents direct action. A $500 system covering 14% of an apartment's electricity saves roughly $250 annually. That money matters when extreme heat is up 55% statewide and running AC means choosing between cooling and eating.

Electrical workers unions broke ranks with utilities on this fight, going neutral after initial opposition. "We now have a set minimum standard for the safe installation of these things that won't put people at risk," said John Doherty of the California State Association of Electrical Workers. His union dropped opposition to a technology that puts clean energy directly in tenants' hands.

By the numbers:

• Over 4 million balcony solar systems installed in Germany, proving the model works at scale (EWG)
• Systems cost around $500 today, with prices expected to fall as California's market opens (EWG)
• A 400W system saves approximately $250 per year for average apartment electricity usage (EWG)
• Systems capped at 1,200W (enough to power fridges, lights, Wi-Fi routers, and AC units) (Solar Power World)
• 11 other states have already passed similar laws, with California trailing Utah, Colorado, and others (Climate-Colored Goggles)

What remains: Utilities successfully lobbied for a January 1, 2030 sunset clause requiring legislative reauthorization. This is a PG&E priority that sets up another fight in four years. The interconnection exemption will expire unless lawmakers extend it, giving utilities another chance to claw back control over distributed energy that threatens their monopoly model.

UK makes plug-in solar legal nationwide, opening path for 800W balcony systems

The Bottom Line: Starting August 27, residents across England, Wales, and Scotland can legally install plug-in solar systems up to 800W without certified installers or planning permission, following amendments to UK plug and socket regulations and electrical safety rules. The systems cover up to 20% of average household electricity use and save families up to £110 ($150) per year, according to the UK government. Major retailers including Argos, Screwfix, Amazon, and Currys are stocking systems, with Screwfix planning availability this fall.

The Story: Graham Biggart, managing director of catalogue retailer Argos, confirmed the company is "really pleased to now offer plug-in solar panels" to customers. Screwfix told pv magazine it plans to offer systems to customers this fall. The retail rollout matters because these aren't niche products requiring specialty suppliers. They're going mainstream through the same channels where UK households buy garden furniture and power tools.

By the numbers:

• Systems up to 800W now legal without certified installation, covering up to 20% of average home electricity use (UK government)
• Households save up to £110 per year from single plug-in array (UK government)
• 77% of UK households lack air conditioning as climate heats up, making accessible solar crucial for cooling power (Energy Saving Trust)
• Regulation changes remove planning permission requirements in England; Scotland and Wales set own rules (pv magazine)

What remains: Plug-in battery storage remains excluded from the regulatory approval pending a full safety review by the Energy Storage Association. Households cannot yet pair solar with storage to maximize value. Current UK battery regulations require outdoor installations and certified wiring checks. Standards for plug-in batteries and their impact on household circuits are still under investigation.

Georgia Regulators Approve Secret 3.2 GW OpenAI Deal With No Public Vote

The Bottom Line: The Georgia Public Service Commission staff approved a contract between Georgia Power and OpenAI for a 3.2 GW hyperscale data center in Effingham County without a direct vote from the commission's elected members. The deal went through after what Sierra Club and Southern Alliance for Clean Energy call a "tumultuous and secretive process" that bypassed public accountability for one of the largest utility contracts in state history.

The Story: Georgia Power and PSC staff co-released a letter designed to calm public concerns about whether the data center will raise everyone's electric bills. Instead, it left key questions unanswered: how is Georgia Power calculating the cost to serve these data centers, and what protections exist if the data center leaves or uses less power than contracted? Maggie Shober, Research Director at Southern Alliance for Clean Energy, notes that "it is up to the Commission itself to update this process to provide transparency and accountability to the public."

By the numbers:

• Georgia Power's contract covers 3.2 GW of capacity for OpenAI's planned data center in Effingham County
• PSC staff approved the deal without a direct vote from the five elected commissioners
• Key cost calculations and ratepayer protections remain undisclosed in the joint statement
• This follows a pattern of utilities prioritizing data center deals nationwide, often at ratepayer expense

What remains: Elected commissioners at the PSC have no formal authority to weigh in on future large load contracts under the current process. Without updated rules requiring commission votes and public review, Georgia Power can continue negotiating billion-dollar deals behind closed doors while ratepayers absorb the risk.

Solar kept Europe's lights on while nuclear and coal shut down in deadly heat

The Bottom Line: Solar supplied 25% of EU electricity during June and July's record-breaking heatwaves. These were the exact conditions that forced 11 GW of French nuclear offline when rivers became too hot for cooling, dropped hydropower to decade lows, and cut 1.3 GW from Polish coal plants as the Vistula dried up. Solar generation ran 17% higher than normal summer output in France and Hungary, keeping grids stable during peak demand while the 'reliable baseload' power sources went dark.

The Story: On July 12, with temperatures above 40°C across Western Europe, French nuclear operator EDF marked 11 gigawatts of capacity offline due to "environmental issues." River water was too warm to legally discharge back into waterways without killing aquatic life. At the same moment, solar panels across France were pumping out 17% more electricity than typical summer days, directly overlapping with afternoon air conditioning demand that had pushed Italian power consumption up 28% from the previous week. The irony was bitter: infrastructure designed as "always-on" baseload couldn't handle the heat, while the supposedly "intermittent" renewable showed up exactly when people needed it most.

By the numbers:

• Solar provided 25% of EU electricity in both June and July 2026 (the first time solar has supplied a quarter of European power, according to Ember Energy)
• France lost up to 11 GW (18%) of nuclear capacity to thermal shutdowns as rivers became too warm for cooling discharge
• UK gas plants reduced output by 2.5 GW combined due to heat-reduced cooling effectiveness
• Poland's coal plants at Kozienice and Połaniec cut 1.3 GW as the Vistula River dropped to critically low levels
• EU hydropower hit its lowest July level in a decade as drought persisted across the continent
• Evening electricity prices spiked to €900/MWh in Hungary and €313/MWh in France (the highest since the 2022-23 winter gas crisis, according to Copernicus Climate Change Service)

What remains: Europe now needs batteries to shift daytime solar abundance into evening hours when cooling demand persists but solar stops producing. Evening price spikes prove the battery storage gap is now the critical infrastructure need, not because solar fails, but because legacy thermal infrastructure designed for stable climate can't handle the heat that's already here.

The Quick Scribbles

California passed Assembly Bill 1738 establishing statewide rights for homeowners to request remote virtual inspections for solar, batteries, and heat pump installations, eliminating delays from in-person inspection scheduling that can add weeks to project timelines.

Trump issued an emergency executive order banning acquisition, importation, transfer, or installation of foreign-produced electrical grid equipment including transformers, inverters, and circuit breakers from designated foreign countries, forcing utilities and solar developers to source critical components domestically despite limited US manufacturing capacity.

Fortlev presented Aquafort, a modular HDPE floating solar system for reservoirs, lakes, and dams at Intersolar South America 2026, supporting M10 and M12 modules with dedicated maintenance floats for accessing arrays without boats.

Portugal's largest solar plant entered administration after Welink Energy Portugal 2 UK, owner of the 220 MW Solara4 facility, faced weak generation, low wholesale power prices, technical issues, and rising costs that strained revenues just years after commissioning.

Tesla received its largest Semi order to date as the electric heavy-duty truck moves into European markets, expanding commercial electric freight beyond US operations with PepsiCo and other early adopters.

Solarpunk Currents covers the clean energy transition through a solarpunk lens: community power, climate justice, and imaginative futures. Subscribe on Substack or visit solarcurrents.co.