UK and California Forge Fresh Clean Energy Partnership

California and UK sign bilateral clean energy agreement

The UK government and California signed a five-year partnership agreement on 16 February 2026. Energy Secretary Ed Miliband and Governor Gavin Newsom finalized the deal in London during a state visit.

The memorandum of understanding establishes a voluntary framework for collaboration on clean energy technologies, grid infrastructure, and carbon management. It carries no binding legal obligations. However, it comes with immediate commercial backing. British energy firm Octopus Energy announced nearly $1 billion in California clean technology investments alongside the signing.

This partnership arrives as US federal support for renewable energy shifts. Consequently, California is expanding its role as a state-level climate leader. The agreement creates formal channels for UK businesses to access California’s energy markets while California gains access to British expertise in offshore wind and grid technology.

What the agreement covers and how it operates

The memorandum identifies six priority areas for cooperation. These include clean energy technology development, particularly offshore wind, low-carbon hydrogen, and long-duration energy storage. Grid modernization represents another focus area, addressing transmission infrastructure and market integration.

Additional priorities cover decarbonizing buildings and transport, carbon management through capture and removal technologies, and climate finance mechanisms. Environmental protection and nature-based solutions round out the framework. Two government departments will coordinate the work: the UK’s Department for Energy Security and Net Zero and California’s Environmental Protection Agency.

The agreement establishes mechanisms for knowledge exchange through technical dialogues, joint workshops, and academic partnerships. It also creates pathways for commercial collaboration between British and Californian firms. This includes sharing data on policy effectiveness, regulatory approaches, and technology performance.

Therefore, the structure differs from traditional trade agreements. It functions more as an organized platform for sharing expertise and coordinating research priorities. Both governments can invite additional partners into specific initiatives as projects develop.

Octopus Energy commits $1 billion to California projects

British energy company Octopus Energy announced investment commitments worth nearly $1 billion in California clean technology. The portfolio includes carbon removal projects using grassland restoration and reforestation. It also covers heat battery technology for industrial decarbonization and a solar-plus-storage facility scheduled to begin operations in July 2026.

This investment advances Octopus Energy’s broader $2 billion commitment to US energy transition projects by 2030. The timing aligns with the company’s strategy to expand its American presence through generation assets and technology deployment. For UK businesses, this demonstrates the commercial opportunities California’s energy markets offer.

Ed Miliband stated the partnership “strengthens opportunities for UK businesses and secures investment for our country.” Meanwhile, Governor Newsom emphasized tangible economic benefits: “This commitment demonstrates how California is advancing partnerships to build the clean energy economy.”

The investment package includes technologies at various stages of market readiness. Heat batteries store thermal energy for industrial processes, reducing natural gas consumption. Carbon removal through land management offers verifiable emission reductions. Solar-plus-storage addresses California’s evening peak demand challenges when solar generation drops.

California’s clean energy position and recent policy changes

California generates over two-thirds of its electricity from clean sources. The state targets 100% renewable electricity by 2045. This compares with the UK’s 2050 net-zero emissions commitment, though the timelines measure different scopes.

New California laws taking effect in 2026 strengthen this foundation. Expanded cap-and-trade credits will return approximately $3 billion annually to electricity customers. A west-wide electricity market integration project is projected to save $1 billion yearly through improved resource sharing across states.

The state has also increased investment in transmission infrastructure and carbon removal technologies. These measures create commercial opportunities for firms with relevant expertise. Additionally, California’s green economy sector employs over 500,000 workers, generating jobs at four times the rate of other growth industries.

Silicon Valley Clean Energy reduced 2026 rates by 40% for participating customers, demonstrating how policy and market changes translate into business cost reductions. For UK companies considering California projects, these policy shifts create more stable revenue expectations and clearer regulatory pathways.

How this affects UK businesses and supply chains

The partnership creates several implications for British firms operating in energy, construction, manufacturing, and professional services sectors. First, it establishes formal government channels for commercial collaboration. This reduces entry barriers for UK companies seeking California contracts.

Offshore wind presents immediate opportunities. California is developing its offshore wind capacity but lacks the UK’s decades of operational experience. British engineering firms, project developers, and specialized contractors possess knowledge California needs. Similarly, UK expertise in hydrogen production and grid-scale storage technologies aligns with California’s infrastructure priorities.

For manufacturers, California’s building decarbonization push affects product specifications and market demand. Heat pumps, insulation materials, and building management systems meeting California standards may require design modifications. However, success in California often opens doors to other US states adopting similar standards.

Supply chain considerations become more complex. Consequently, UK exporters must understand California’s procurement preferences, labour standards, and domestic content expectations. The state often requires union labour on large projects and favours suppliers demonstrating environmental credentials. Public sector contracts increasingly demand carbon reporting through programs like net-zero compliance frameworks.

Professional services firms gain opportunities in advisory roles. British consultancies with climate expertise can support California businesses adapting to evolving regulations. Legal, financial, and technical advisory services around carbon markets, emission reduction strategies, and climate disclosure requirements all see growing demand.

The Octopus Energy investment demonstrates another pathway. UK firms with capital and project development expertise can acquire or develop California assets directly. This approach provides operational control and long-term revenue streams but requires understanding US tax incentives, financing structures, and regulatory compliance.

Essential details for business planning

• The UK-California clean energy memorandum was signed on 16 February 2026 in London by Energy Secretary Ed Miliband and Governor Gavin Newsom.
• Octopus Energy committed nearly $1 billion to California clean technology projects, including carbon removal, industrial heat batteries, and solar-plus-storage facilities.
• Priority collaboration areas include offshore wind, low-carbon hydrogen, long-duration storage, grid modernization, building and transport decarbonization, and carbon management.
• California generates over two-thirds of its electricity from clean sources and targets 100% renewable electricity by 2045, creating ongoing demand for clean technology.
• New California laws return approximately $3 billion annually to electricity customers through expanded cap-and-trade credits and are projected to save $1 billion yearly through west-wide market integration.
• California’s green economy employs over 500,000 workers, with job growth rates four times higher than other expanding sectors.
• The agreement establishes a voluntary five-year framework without binding legal obligations but creates formal channels for technical dialogue and commercial collaboration.

Commercial and compliance considerations for UK firms

British businesses evaluating California opportunities should consider several practical factors. Market entry often requires local partnerships or subsidiaries due to licensing requirements and procurement preferences. California’s regulatory environment differs significantly from UK frameworks, particularly around environmental permits and labour law.

Carbon reporting expectations continue to expand. California companies increasingly require supply chain emission data for their own disclosures. UK suppliers without robust carbon accounting may find themselves excluded from tenders. Therefore, implementing comprehensive emission tracking becomes commercially necessary, not just regulatory compliance.

Currency and financing considerations matter for project investments. US interest rates and dollar fluctuations affect project returns. Moreover, California’s energy markets have specific price formation mechanisms that differ from UK wholesale markets. Understanding these differences proves essential for accurate financial modelling.

The broader US political context creates uncertainty. Federal renewable energy support has weakened, but California maintains strong state-level commitments. However, legal challenges to California’s authority over emissions standards and grid planning could affect long-term project viability. UK firms need scenario planning covering potential policy shifts.

Technology standards present both opportunities and barriers. British products meeting UK specifications may require modifications for California markets. Conversely, technologies certified for California often gain easier acceptance in other US states. This makes California a strategic entry point despite initial adaptation costs.

For smaller firms, the training and knowledge resources around international carbon markets and climate policy differences become valuable. Understanding how California’s cap-and-trade system operates, how emission credits function, and how carbon border mechanisms may evolve all inform better commercial decisions.

Public procurement in California increasingly incorporates climate criteria. Local authorities and state agencies evaluate bids partly on carbon footprint and sustainability credentials. UK firms pursuing public sector contracts therefore need documented environmental performance and transparent reporting. This aligns with similar trends in UK public procurement under PPN 06/21, making investment in carbon management systems applicable across markets.

Technology areas with near-term commercial potential

Certain technology sectors show particularly strong commercial prospects. Offshore wind represents the most immediate opportunity. California has limited operational experience but aggressive deployment targets. British firms with installation vessels, foundation engineering expertise, or operations and maintenance capabilities possess directly relevant experience.

Long-duration energy storage addresses a critical California challenge. The state’s high solar penetration creates evening supply gaps when demand peaks but generation drops. Technologies storing energy for 8 to 24 hours fill this gap. British companies developing flow batteries, compressed air storage, or thermal storage systems find receptive markets.

Industrial decarbonization technologies serve California’s large manufacturing sector. Heat batteries, industrial heat pumps, and process electrification solutions help factories reduce natural gas consumption. The state’s climate policies create economic incentives for manufacturers to adopt these technologies, improving the investment case for suppliers.

Carbon removal presents emerging opportunities. California’s climate strategy includes significant carbon removal targets beyond simple emission reductions. Nature-based solutions like improved grassland and forest management offer near-term options. Direct air capture and other engineered removal technologies represent longer-term but potentially larger markets.

Grid technology and software create openings for British firms with digital expertise. California needs sophisticated grid management as renewable penetration increases. Software handling forecasting, demand response, and distributed energy resources management all see growing adoption. UK firms combining energy domain knowledge with software development capabilities find strong demand.

Policy context and federal-state dynamics

This bilateral partnership reflects wider tensions in American climate policy. Federal support for renewable energy has diminished under recent political shifts. Consequently, California and other states have increased their own climate initiatives to fill gaps left by federal retreat.

California possesses unusual autonomy within the US system. The state holds a Clean Air Act waiver allowing it to set vehicle emission standards stricter than federal requirements. Other states can adopt California’s standards, creating a large effective market. This authority makes California partnerships more valuable for UK businesses than similar agreements with smaller US states.

However, this autonomy faces ongoing legal challenges. Federal authorities and industry groups periodically contest California’s regulatory authority. UK firms must monitor these legal battles as they affect long-term market access and regulatory stability. Nevertheless, California’s climate leadership has persisted through multiple federal administrations of different political orientations.

The west-wide electricity market expansion illustrates how California drives regional change. By integrating with neighbouring states, California exports its clean energy priorities and creates larger markets for renewable technologies. For UK businesses, this regional influence multiplies the value of California market access.

International partnerships like the UK agreement also serve California’s political strategy. They demonstrate continued global climate cooperation despite federal disengagement. For British firms, this makes California a relatively stable policy environment compared to federal-level uncertainty. The state has consistently maintained and strengthened climate commitments regardless of national political shifts.

Practical steps for businesses considering California opportunities

UK firms should start by assessing whether their capabilities match California’s stated priorities. The memorandum’s focus areas provide clear signals about where both governments will direct support and resources. Companies working in offshore wind, hydrogen, storage, carbon management, or grid technology have the strongest alignment.

Market research specific to California regulations proves essential. The state’s building codes, vehicle standards, and emission requirements often exceed federal minimums and differ from UK frameworks. Understanding these differences early prevents costly redesigns later. Additionally, California’s procurement processes favour detailed sustainability documentation and transparent supply chains.

Building relationships with California trade bodies and industry associations accelerates market entry. Organizations focused on renewable energy, clean technology, and environmental business provide networking and intelligence. The UK government’s Department for Business and Trade offers California-specific support through its US offices.

For firms requiring carbon reporting and emission reduction documentation, implementing robust systems becomes necessary. California partners and customers increasingly demand supply chain emission data. UK businesses with strong carbon accounting and reduction programmes demonstrate competitive advantages. Resources for developing these capabilities include compliance support for carbon reporting requirements.

Financial and legal advice specific to California proves valuable before major commitments. Tax structures, employment law, environmental liability, and contract standards all differ from UK norms. Early expert input prevents expensive mistakes. Many UK firms establish Delaware corporations for liability protection while maintaining California operations.

Monitoring the government coordination mechanisms matters for timing opportunities. As the Department for Energy Security and Net Zero and California’s Environmental Protection Agency organize workshops and dialogues, they will likely announce funding opportunities, pilot programs, and partnership initiatives. UK firms engaged with these channels gain early awareness of opportunities.

Where to find official information and guidance

The Department for Energy Security and Net Zero provides UK government updates on the partnership and related initiatives. Their website includes policy documents, partnership announcements, and contact information for businesses seeking involvement.

California’s official state portal offers information on the state’s climate policies, regulatory requirements, and business resources. The site includes links to specific agencies handling energy, environmental protection, and economic development.

For businesses seeking market intelligence, the UK Department for Business and Trade’s US offices provide California-specific support services. They offer market briefings, regulatory guidance, and introductions to potential partners.

The California Air Resources Board administers the state’s cap-and-trade program and vehicle emission standards. Their website contains detailed regulatory information relevant to businesses affected by California’s climate policies.

Technical details about California’s electricity market and grid planning appear on the California Independent System Operator website. This resource proves particularly valuable for firms working in grid technology, energy storage, or renewable generation.