Volterra
Volterra is the historical brand name for the retail energy supply business of Protergia, a subsidiary of METLEN Energy & Metals, supplying electricity and natural gas to over 680,000 residential, SME, and large-enterprise customers across Greece.
- Company typePrivate
- Founded2010
- HeadquartersMaroúli, Greece
- Headcount51–100
- GTM typeB2B and B2C
- OfferingServices
What Volterra does
Volterra is the historical brand name for the retail energy supply business now operated under Protergia, a wholly-owned subsidiary of METLEN Energy & Metals, the largest private energy company in Greece. The company supplies electricity and natural gas to over 680,000 customers across Greece through 550,000+ supply points, segmented across residential, SME, and large-enterprise customers. Its product portfolio spans commodity supply (fixed-rate, dynamic, and flexible Picasso plans), bundled electricity-gas offers, and distributed energy solutions including rooftop solar (Helios Value), heat pumps, smart meters, and 24/7 home and business care services. The company also operates the Chargespot EV charging network across Greece in partnership with public entities and related businesses.
The core technology platform comprises a multi-channel retail energy operating system: the protergiaApp for consumption monitoring, billing, and meter-read submission; smart meters for accurate consumption tracking; a dynamic pricing tariff engine for large-enterprise customers; and an omnichannel sales-and-service backbone linking the website, mobile app, retail stores (Σημεία Protergia), the 18311 hotline, and enterprise field sales. Go-to-market is sales-led across all three segments, with self-service digital channels layered on top of traditional sales and a designated Universal Service Provider mandate. The business model is subscription-based commodity supply with recurring monthly billing, supplemented by hardware sales (solar, heat pumps, smart meters) and transaction-fee revenue from EV charging. Customer loyalty is driven by the Protergia Club program and event sponsorships.
Volterra firmographics
Firmographics- Name
- Volterra
- Legal name
- Protergia S.A.
- Website
- https://www.volterra.gr
- Company type
- Private
- Founded year
- 2010
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Volterra is the historical brand name for the retail energy supply business of Protergia, a subsidiary of METLEN Energy & Metals, supplying electricity and natural gas to over 680,000 residential, SME, and large-enterprise customers across Greece.
- Ownership category
- akta.pro rank
Where Volterra is headquartered
LocationHeadquarters
- HQ city
- Maroúli
- HQ country
- Greece
- HQ region
- Europe
Offices1 record
Markets served
Volterra business model
Business model- GTM type
- B2B and B2C
- Offering type
- Services
- Cost components
- Supply Chain, Infrastructure, Operations, Personnel, Marketing or Sales, Technology or R&D
Revenue model
- Electricity Supply: Supply of electricity to residential, business, and large enterprise customers through various tariff programs including fixed-rate (Value series), dynamic pricing, and Picasso flexible plans
- Natural Gas Supply: Supply of natural gas to residential and business customers, including standalone and combined electricity-gas packages
- Energy Solutions Services: Additional energy solutions including rooftop photovoltaics (Helios Value), heat pumps, smart meters, and home/enterprise care services
- EV Charging Infrastructure: Electric vehicle charging network (Chargespot powered by Protergia) providing charging services across Greece
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | Residential Electricity - Fixed Rate Plans |
| Subscription | Monthly | Residential Natural Gas |
| Subscription | Monthly | Business Electricity Tiers |
| Subscription | Multi-year contract | Large Enterprise Custom Contracts |
| Unit Pricing | Pay-as-you-go | Energy Solutions |
Go-to-market motion1 record
Distribution channels6 records
Marketing channels6 records
Volterra product offering
Product offeringCore offering
Volterra (operating under the Protergia brand) is a Greek energy supply company that trades and supplies electricity and natural gas to residential, business, and large enterprise customers across Greece. The company also offers energy solutions including rooftop solar photovoltaic systems (Helios Value), heat pumps, smart meters, home and business care services, and the Chargespot EV charging network, serving over 680,000 customers nationwide as part of the METLEN Energy & Metals group.
Product overview
The source data primarily concerns Protergia, an energy provider under METLEN Energy & Metals. Volterra appears as a historical brand - references to 'Historical Contract Forms Volterra' (Ιστορικά Έντυπα Συμβάσεων Volterra) indicate that Volterra was a prior electricity/gas supply brand whose contract documents are now archived on the Protergia website. No active Volterra-branded products or services are described in the provided content; the active product portfolio belongs to Protergia.
Differentiator
Problem solved
Functional benefit
Brands
- Protergia Picasso: Flexible electricity plan allowing customers to choose their own plan terms
- Value Sure
- Value Power + Gas
- Double Energy Reward
- Helios Value
- Protergia Club
- Chargespot
- Smart Meters
- Heat Pumps
- Home Care 24/7
- Business Care
Products and services
- Residential Electricity Supply Electricity supply service for Greek households offering multiple tariff options — fixed-rate (Value Sure 12M/18M), dynamic market-linked pricing (Dynamic One Home), customer-defined flexible plans (Picasso), and specialty plans (Value Bright, Value Lite, Value Standard, Value Special, student offer). Available across Greece via online self-service, mobile app, stores, and hotline.
- Residential Natural Gas Supply Natural gas supply service for Greek households including standalone plans (Value Gas Sure, Single Value standalone, shared common area / Κοινόχρηστο) and combined electricity + gas packages (Value Power + Gas). Available across Greece.
- Business Electricity Supply Electricity supply service for small and medium Greek businesses, tiered by consumption level (Professional 1, 2, 3) with multiple options including Value Simple, Value Standard, Value Sure, Value Seasonal, Dynamic One, Value Special, and Picasso flexible plans. Distribution through online self-service, hotline, stores, and inside sales.
- Business Natural Gas Supply Natural gas supply service for Greek businesses, including the Professional Single Reward plan. Combined electricity + gas B2B package (Double Energy Reward) is also offered.
- Large Enterprise Customized Energy Programs
Quantifiable outcome
- Over 680,000 customers served
- +1 more outcomes
Companies that use Volterra
Customer profileNamed customers3 records
Segments3 records
Ideal customer profiles3 records
Volterra technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Volterra partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered flagship, core and minor.
- METLEN Energy & MetalsflagshipProtergia is an integral part of METLEN Energy & Metals, the largest private energy company in Greece. METLEN provides the parent company backing, brand credibility, financial stability, and operational scale that enables Protergia to serve over 680,000 customers nationwide with electricity and natural gas supply services.
- ChargespotcoreProtergia partners with Chargespot to provide electric vehicle charging infrastructure across Greece. The partnership supports Protergia's electromobility strategy by offering EV charging services through Chargespot's network of fast and ultra-fast charging stations, with strategic collaborations with public entities and related businesses.
- Release AthensminorProtergia sponsors Release Athens music festival for brand visibility and community engagement, marking the second consecutive year of partnership in 2025.
- ΔΕΔΔΗΕ (Hellenic Electricity Distribution Operator)coreTechnical partnership for electricity distribution and outage reporting. Protergia directs customers experiencing power outages to ΔΕΔΔΗΕ at 11500 for electricity distribution network support.
- ENAON (Natural Gas Distribution Operators)corePartnership with natural gas distribution operators (formerly ΕΔΑ Αττικής, ΕΔΑ Θεσσαλονίκης Θεσσαλίας and ΔΕΔΑ) for gas leak emergency response. Protergia provides the emergency number 8001187878 for ENAON gas leak intervention services.
Scale indicators4 records
Recent moves5 records
Expansion highlights6 records
Volterra competitors and assessment
Company assessmentBroad incumbents
- ΔΕΗ (Public Power Corporation / PPC): The dominant state-linked Greek electricity utility and the largest retail electricity supplier in Greece. Directly competes with Protergia in Greek residential, business, and enterprise electricity supply, with overlapping gas and energy solutions offerings. Listed on the Athens Stock Exchange.
- Enel (Enel SpA): Major European integrated energy retailer with operations across power generation, distribution, and retail supply. Comparable as a broad energy retailer with renewable energy and electrification offerings overlapping with Protergia's portfolio.
- E.ON: Major European energy retailer and network operator providing electricity, gas, and energy solutions to millions of customers across multiple countries. Comparable as a broad incumbent with energy solutions (solar, EV charging, heat) that overlap with Protergia's diversified offering.
- Iberdrola: Global integrated energy major with significant European retail electricity supply operations and leadership in renewables. Comparable as an incumbent energy retailer with diversified offerings across electricity, gas, and clean energy solutions.
- Vattenfall: European state-owned integrated energy retailer supplying electricity and gas to residential and business customers in Northern Europe. Comparable as a broad incumbent with similar retail energy supply and decarbonization/solutions offerings.
Direct peers
- NRG Supply (formerly Elin Verd): A Greek alternative energy retailer supplying electricity and natural gas to residential and business customers. Directly competes with Protergia in the same Greek retail supply market with similar tariff structures and customer segments.
- HERON (HERON Thermoelectric / GEK TERNA): Greek electricity and gas supplier integrated with thermal generation, part of the GEK TERNA group. Directly competes with Protergia in Greek retail energy supply and energy solutions for residential and commercial customers.
- WATT+VOLT: Greek independent electricity and natural gas supplier with a focus on SMEs and larger commercial customers. Directly competes with Protergia in the Greek business and enterprise energy supply segment.
- Elinoil: Greek energy company supplying electricity, natural gas, and fuels to retail and business customers. Directly competes with Protergia in Greek retail and commercial energy supply.
Regional players
- Edison (Edison S.p.A.): Italian/European integrated energy company supplying electricity and natural gas to retail and business customers. Comparable as a regional retail energy supplier with similar customer segments and product offerings, though focused primarily on the Italian market.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Volterra social profiles
Digital presenceVolterra financial estimates
Financial estimateRevenue estimate
Valuation estimate
Volterra leadership team
Management profileNumber of profiles
Volterra funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Volterra M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Volterra
What does Volterra do?
Volterra (operating under the Protergia brand) is a Greek energy supply company that trades and supplies electricity and natural gas to residential, business, and large enterprise customers across Greece. The company also offers energy solutions including rooftop solar photovoltaic systems (Helios Value), heat pumps, smart meters, home and business care services, and the Chargespot EV charging network, serving over 680,000 customers nationwide as part of the METLEN Energy & Metals group.
Is Volterra a public or private company?
Volterra is a private company. It is classified as corporate owned and is currently operating.
When was Volterra founded?
Volterra was founded in 2010. It employs 51 to 100 people.
Where is Volterra based?
Volterra is headquartered in Maroúli, Greece, in the Europe region.
How does Volterra make money?
Four revenue lines are on record. Electricity Supply is the primary driver. The others are natural Gas Supply, energy Solutions Services and EV Charging Infrastructure.
Who are Volterra's main competitors?
Broad incumbents on record are ΔΕΗ (Public Power Corporation / PPC), Enel (Enel SpA), E.ON, Iberdrola and Vattenfall. Direct peers are NRG Supply (formerly Elin Verd), HERON (HERON Thermoelectric / GEK TERNA), WATT+VOLT and Elinoil. Edison (Edison S.p.A.) is listed as a regional player.
Does Volterra have an API?
No public API is recorded for Volterra.