Calculate what percentage of your energy comes from renewable sources. Track your renewable energy mix and progress toward sustainability goals.
Tracking your renewable energy percentage is essential for sustainability reporting, ESG disclosures, and progress toward climate goals. Whether you're a household with rooftop solar, a business buying RECs, or a facility with on-site wind, knowing your exact renewable percentage provides an actionable baseline.
The calculation is straightforward: divide your renewable energy consumption (from solar, wind, hydro, biomass, geothermal, or REC purchases) by your total energy consumption. The result is your renewable energy percentage.
This calculator helps you compute your renewable energy percentage from multiple sources. Enter your total consumption and renewable contribution to see your current mix and how much more renewable energy you need to reach your target percentage.
By calculating this metric accurately, energy analysts gain actionable insights that inform equipment selection, system design, and operational strategies for maximum efficiency and savings. Understanding this metric in precise terms allows energy managers to evaluate investment options, forecast savings, and build compelling business cases for efficiency upgrades and retrofits.
Businesses, municipalities, and individuals increasingly set renewable energy targets (50%, 100%, etc.). This calculator shows your current position and what's needed to reach your goal. Precise quantification supports regulatory compliance and sustainability reporting, ensuring that energy data meets the standards required by auditors and industry certification bodies. Data-driven tracking enables proactive energy management, helping organizations reduce operational costs while progressing toward environmental sustainability goals and carbon reduction targets.
Renewable % = (Renewable kWh / Total kWh) × 100 Gap to Target = (Target % − Current %) × Total kWh / 100
Result: 35.0% renewable, 65,000 kWh gap to 100%
Renewable percentage: 35,000 / 100,000 × 100 = 35.0%. To reach 100% renewable: need an additional 65,000 kWh from renewable sources. This could come from expanded on-site solar, community solar subscriptions, or purchasing 65 RECs.
Location-based: uses the average emission factor of the local grid. Market-based: uses contractual instruments (RECs, PPAs, green tariffs) to claim specific generation. Companies reporting under GHG Protocol Scope 2 should report both. Market-based is used for renewable energy percentage claims.
A phased approach works well: reach 50% within 2–3 years through RECs and green power programs, then 75% by adding community solar or virtual PPAs, and 100% by including on-site generation. Costs increase with each phase but so does the environmental impact.
Advanced sustainability targets include all energy: electricity, heating, cooling, and transportation. This requires electrification of heating (heat pumps), EV adoption, and renewable thermal energy (solar thermal, geothermal). "100% renewable energy" is much harder than "100% renewable electricity."
Solar, wind, hydroelectric, geothermal, biomass, and ocean energy are universally accepted as renewable. Nuclear is low-carbon but not typically classified as renewable. Natural gas with carbon capture is generally not considered renewable in standard frameworks.
Yes, RECs are the standard mechanism for claiming renewable electricity. When you purchase and retire a REC, you claim the renewable attribute of that MWh. Most corporate and government renewable targets use RECs as the primary accounting instrument.
For the most accurate picture, use "location-based" accounting (your grid's actual renewable percentage) for baseline, and "market-based" accounting (adding your REC purchases and green power contracts) for your claimed renewable percentage. GHG Protocol Scope 2 guidance covers both approaches.
RE100 is a global corporate initiative where companies commit to 100% renewable electricity by a target date. Members include Google, Apple, Microsoft, IKEA, and 400+ other companies. Membership requires publishing an action plan and reporting progress annually.
Options from simplest to most impactful: buy unbundled RECs (cheapest), join a community solar program, sign a virtual PPA, switch to a green utility tariff, install on-site solar/wind, or sign a physical PPA. Each has different costs, additionality, and impact.
Yes. Reducing total consumption makes your existing renewable sources cover a higher percentage. Cutting usage from 100,000 to 80,000 kWh with the same 35,000 kWh of renewable raises your percentage from 35% to 43.8%. Energy efficiency is always the first step.