Decree 273 Reshapes Ecuador's Mining Investment Calculus: New 3-8% Royalty Scale, 100% Self-Power Mandate, and Tightened Exploration Timelines Take Effect

Decree 273 Reshapes Ecuador's Mining Investment Framework

President Daniel Noboa signed Executive Decree 273 on December 31, 2025, introducing sweeping modifications to the General Mining Law (Ley de Mineria) that took effect on January 1, 2026. The decree -- which the government confirmed is not retroactive -- represents the most significant regulatory overhaul of Ecuador's mining sector since the original Mining Code was enacted in 2009.

The reforms arrive as Ecuador's mining sector approaches a critical inflection point: the full reopening of the metallic concession registry for medium and large-scale projects, expected in Q1 2026, will be the first opportunity for new large-scale concession applications since the registry was frozen in January 2018.

New royalty framework

Decree 273 replaces the previous flat-rate royalty system with a sliding scale tied to commodity prices and project scale, fundamentally changing the fiscal equation for mining investors:

Commodity Price Level	Royalty Rate	Application
Below reference price	3% of gross revenue	Floor rate for all metallic mining
At reference price	5% of gross revenue	Standard operating range
Above reference price	8% of gross revenue	High-price windfall capture

The "reference price" is defined by the Ministry of Energy and Mines using a trailing 3-year average of London Metal Exchange (LME) spot prices for each commodity. For gold, at current prices (~$2,050/oz), the 5% standard rate would apply, with the 8% ceiling triggered at approximately $2,400/oz.

The decree also provides specific provisions for strategic minerals, including updated methodologies for gold and silver royalty calculations that give a more precise definition of the revenue base against which royalties are levied.

100% self-power mandate

The most operationally significant provision requires that all mining project developments -- regardless of scale -- must include plans to supply 100% of the electricity they will require. This mandate has far-reaching implications:

• Large-scale projects (Cascabel, Cangrejos, Warintza) will need to develop dedicated renewable energy installations or secure long-term power purchase agreements (PPAs) with private generators
• Medium-scale operations must demonstrate electricity self-sufficiency as a condition of exploitation permits
• Cost impact: Industry estimates suggest the self-power requirement adds $150-400 million to the capital cost of a large copper-gold project, depending on location and energy intensity

The provision directly addresses concerns exposed by the 2024 blackout crisis, during which existing mining operations were forced to curtail production. It also creates a potential synergy with the government's $2.43 billion power expansion plan, as mining companies may invest in solar and wind installations in mining-adjacent regions that could feed excess capacity back to the national grid.

Chambers and Partners noted that the self-power mandate effectively creates a "parallel energy development obligation" that will require mining companies to develop energy expertise or partner with specialised power developers.

Tightened exploration timelines

Decree 273 compresses the window for moving from exploration to exploitation:

Stage	Previous Framework	Decree 273
Initial exploration	Up to 4 years	Up to 4 years (unchanged)
Environmental procedures	No auto-start	Auto-start if delays occur
Exploitation application	Flexible timeline	Must file within 12 months of completing exploration
Total exploration-to-exploitation	~8 years typical	3.5-5 years target

Critically, if a permit holder fails to initiate environmental procedures in a timely manner or incurs administrative delays, the exploration deadline begins running automatically -- preventing companies from indefinitely extending exploration periods through procedural delays, a practice that was common under the previous regime.

Impact on the project pipeline

The regulatory changes affect the cost structure and timeline for Ecuador's six major mining projects:

Project	Company	Est. Investment	Key Decree 273 Impact
Cascabel	SolGold	$3.2B	Self-power: ~$300-400M for 250+ MW solar/hydro
Cangrejos	CMOC	$2.5B	Royalty ceiling of 8% at gold >$2,400/oz
Warintza	Solaris Resources	$1.4B	Compressed exploration-to-exploitation timeline
Curipamba	Adventus Mining	$248M	Self-power manageable at smaller scale
Loma Larga	Dundee Precious Metals	$312M	Gold/silver-specific royalty methodology
La Plata	Lumina Gold	$450M	Exploration auto-start clock now ticking

Industry reaction

Reaction from the mining industry has been cautiously positive on the royalty framework but concerned about the self-power mandate.

The Camara de Mineria del Ecuador acknowledged that the sliding royalty scale provides "welcome predictability" compared to the previous system, noting that the 3% floor rate is competitive with Peru (varies by commodity) and Chile (variable, typically 5-14% for large copper).

However, international mining executives have flagged the self-power requirement as "potentially the most expensive provision in any Latin American mining code." A senior executive at one of the pipeline companies told Chambers and Partners that the mandate "effectively requires us to become power companies as well as mining companies."

What to watch

The Q1 2026 metallic concession registry reopening will be the first test of whether the reformed framework attracts or deters investment. Monitor the number of large-scale concession applications received, SolGold's Cascabel financing decision (expected H1 2026), and whether the Ministry of Energy and Mines publishes detailed guidance on the self-power mandate's compliance standards. The interaction between mining self-power obligations and the national power expansion plan will shape investment decisions across both sectors.

Sources: Chambers and Partners, Discovery Alert, The Deep Dive, ECIJA