Week of May 4
SB 253 is live — what California’s climate deadline means for your business
Federal climate disclosure is off the table, but SB 253 sustainability reporting requirements are very much active. If your company earns $1 billion or more in annual revenue and does business in California, your first Scope 1 and 2 report is due August 10 — and the GHG Protocol-aligned framework that satisfies California also lays the groundwork for ESRS-compatible and multi-jurisdictional reporting going forward.
FEDERAL RULE IS GONE. STATE DEADLINE IS NOT.
What happened to federal climate disclosure? Why California still matters
The federal climate disclosure rule is dead. The rescission went to the White House for review this week, closing the chapter on a federal reporting mandate. But the companies waiting on Washington for direction just lost their window.
California’s SB 253 was never contingent on federal action. Any U.S. entity with $1 billion or more in annual revenue that does business in California must file GHG Protocol-aligned Scope 1 and 2 emissions data by August 10. CARB is offering enforcement discretion for good-faith first-year filers, but the deadline is real and the clock is running.
One unexpected consequence of the federal shift: a proposal to move public companies from quarterly to semi-annual financial reporting. The stated rationale is deregulation — but a longer financial reporting cycle could give companies more runway for sustainability investments with longer payback periods. It’s a narrow silver lining worth tracking.
EUROPE MOVES FORWARD ON ITS OWN TERMS
How did Europe’s simplified ESRS change the CSRD compliance picture?
Europe finalized its streamlined ESRS this week, cutting required data points by 70% and estimated compliance costs by roughly 30%. The framework is now final enough to build a reporting infrastructure around — which matters even for companies not directly subject to CSRD, because the underlying GHG Protocol-aligned methodology is the same foundation SB 253 requires.
The key structural change: materiality assessment is now strategic rather than item-by-item. Emissions calculations must align with GHG Protocol (financial or operational control). Companies without a 1.5°C-aligned transition plan must explain the absence. Europe also rejected full alignment with ISSB, keeping double materiality intact — a meaningful divergence from the direction many assumed standards would converge.
Public consultation closes June 3, with formal adoption expected later this year. For any company building its carbon accounting infrastructure today, the practical lesson is that GHG Protocol-aligned Scope 1 and 2 reporting — the same foundation SB 253 requires — is the lingua franca across jurisdictions. Get in touch to see how sustainability reporting infrastructure maps across frameworks.
THE ENERGY ECONOMICS HAVE SHIFTED
Is renewable energy actually cheaper than fossil fuels now?
Yes — and the numbers are confirmed. IRENA’s new “24/7 Renewables” report establishes that solar-plus-storage now delivers round-the-clock power at a lower cost than new fossil fuel generation in most regions.
Battery storage costs have dropped 93% since 2010. Firm solar-plus-storage now runs $54–82 per megawatt-hour in sunny regions, compared to $70–85 per megawatt-hour for new coal and more than $100 per megawatt-hour for new gas. With oil above $120 per barrel, that gap is widening. For corporate energy procurement teams, this removes the need to justify renewables on sustainability grounds — the financial case stands on its own.
This shift also changes how companies should think about Scope 2 emissions strategy. Procuring renewable energy is no longer a premium bet; it’s increasingly the lower-cost path, with direct implications for your emissions inventory and your ability to report credibly against science-based targets.
Clean tech
What’s the status of clean tech?
Energy funds saw their largest net capital inflow in over five years in April, as investors price in the cost of fossil fuel dependence. Heat pumps and EVs both set quarterly sales records in Q1 2026.
The surge: Heat pump sales up a third in Germany, a quarter in France. EV sales still climbing post-tipping point. Global energy transition investment hit $2.3 trillion in 2025 (up 8% YoY), with solar, EVs, and grid spending leading.
The quote: SocGen’s Charles de Boissezon: “Investors are pricing the cost of relying on imported fuels in a world that keeps springing geopolitical surprises” – adding that US policy U-turns have “actually been a tailwind” for clean tech. Ironic.
SUPPLY CHAIN SCOPE 3 IS GETTING HARDER
What does the failed IMO carbon tax mean for companies with Scope 3 shipping emissions?
The IMO’s Net Zero Framework for maritime shipping — a carbon levy on vessels over 5,000 gross tonnage, paired with a 2050 net-zero goal — was blocked again, largely due to U.S. opposition. Fifty-five countries still back the framework. The U.S. Federal Maritime Commission called it an unneeded global tax. IMO Secretary-General Dominguez said the organization is “back on track, but we have to rebuild trust.”
For companies that import by sea, the practical impact isn’t relief — it’s fragmentation. Without a global standard, regional carbon pricing continues to expand: EU ETS already covers shipping, and the UK is following. That means your Scope 3 transport emissions are becoming simultaneously more expensive and more complex to calculate, depending on which shipping lanes you use.
If supply chain emissions are part of your reporting scope, this is a signal to get your Scope 3 methodology documented now — before the patchwork of regional rules grows further. The Greenplaces guide to Scope 3 emissions walks through the most common approaches for mid-market companies.
Also notable
What else changed in sustainability regulation this week?
Several additional developments are worth tracking.
The EU weakened its deforestation rule (EUDR), exempting leather products and treaded tires from compliance — though larger companies are still required to comply by December 30, and the comment period closes June 1.
Climate Action 100+ released a revised engagement framework that drops climate disclosure and scenario analysis assessments, a concession following membership departures last year.
On the climate litigation front, the Trump administration sued the state of Minnesota to block its six-year-old consumer protection lawsuit against oil majors; California’s similar suit was stalled pending a Supreme Court case. Trump has now blocked more than 150 onshore wind projects. Meanwhile, China has installed three times as much wind as the rest of the world combined in 2025.
New research adds an urgency note: the Amazon could begin tipping toward grassland within decades if deforestation passes 22%, against a current rate of 17%. At 1.4°C of warming today, the margin is narrowing.
WHAT THIS MEANS FOR YOUR PROGRAM
What to do next
If you’re responsible for sustainability reporting at a company with $1 billion or more in annual revenue doing business in California, August 10 is your nearest hard deadline.
- 1
Start by confirming whether your Scope 1 and 2 data is collected, organized, and GHG Protocol-aligned — that’s the minimum for a good-faith SB 253 filing.
- 2
If you haven’t yet mapped your emissions boundary (financial control vs. operational control), that decision needs to happen before you can calculate anything else.
- 3
If you’re unsure where you stand, a gap assessment against the SB 253 requirements is a practical first step.
The GHG Protocol-aligned foundation you build for California will also position you for ESRS-compatible reporting and other multi-jurisdictional requirements down the road — so the work compounds.
Frequently asked questions
Corinne Hanson is VP of ESG Strategy at Greenplaces, the all-in-one sustainability platform helping businesses turn climate goals into results. She brings over a decade of experience in corporate sustainability, including leadership roles at SH Hotels & Resorts, Global Footprint Network, and the NRDC. A George Washington University grad with degrees in International Relations and Philosophy, Corinne spends her time outside the office the same way she spends it inside: trying to keep the planet in good shape.
